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Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 

Pull the big VFS changes from Al Viro:
 "This one is *big* and changes quite a few things around VFS.  What's in there:

   - the first of two really major architecture changes - death to open
     intents.

     The former is finally there; it was very long in making, but with
     Miklos getting through really hard and messy final push in
     fs/namei.c, we finally have it.  Unlike his variant, this one
     doesn't introduce struct opendata; what we have instead is
     ->atomic_open() taking preallocated struct file * and passing
     everything via its fields.

     Instead of returning struct file *, it returns -E...  on error, 0
     on success and 1 in "deal with it yourself" case (e.g.  symlink
     found on server, etc.).

     See comments before fs/namei.c:atomic_open().  That made a lot of
     goodies finally possible and quite a few are in that pile:
     ->lookup(), ->d_revalidate() and ->create() do not get struct
     nameidata * anymore; ->lookup() and ->d_revalidate() get lookup
     flags instead, ->create() gets "do we want it exclusive" flag.

     With the introduction of new helper (kern_path_locked()) we are rid
     of all struct nameidata instances outside of fs/namei.c; it's still
     visible in namei.h, but not for long.  Come the next cycle,
     declaration will move either to fs/internal.h or to fs/namei.c
     itself.  [me, miklos, hch]

   - The second major change: behaviour of final fput().  Now we have
     __fput() done without any locks held by caller *and* not from deep
     in call stack.

     That obviously lifts a lot of constraints on the locking in there.
     Moreover, it's legal now to call fput() from atomic contexts (which
     has immediately simplified life for aio.c).  We also don't need
     anti-recursion logics in __scm_destroy() anymore.

     There is a price, though - the damn thing has become partially
     asynchronous.  For fput() from normal process we are guaranteed
     that pending __fput() will be done before the caller returns to
     userland, exits or gets stopped for ptrace.

     For kernel threads and atomic contexts it's done via
     schedule_work(), so theoretically we might need a way to make sure
     it's finished; so far only one such place had been found, but there
     might be more.

     There's flush_delayed_fput() (do all pending __fput()) and there's
     __fput_sync() (fput() analog doing __fput() immediately).  I hope
     we won't need them often; see warnings in fs/file_table.c for
     details.  [me, based on task_work series from Oleg merged last
     cycle]

   - sync series from Jan

   - large part of "death to sync_supers()" work from Artem; the only
     bits missing here are exofs and ext4 ones.  As far as I understand,
     those are going via the exofs and ext4 trees resp.; once they are
     in, we can put ->write_super() to the rest, along with the thread
     calling it.

   - preparatory bits from unionmount series (from dhowells).

   - assorted cleanups and fixes all over the place, as usual.

  This is not the last pile for this cycle; there's at least jlayton's
  ESTALE work and fsfreeze series (the latter - in dire need of fixes,
  so I'm not sure it'll make the cut this cycle).  I'll probably throw
  symlink/hardlink restrictions stuff from Kees into the next pile, too.
  Plus there's a lot of misc patches I hadn't thrown into that one -
  it's large enough as it is..."

* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (127 commits)
  ext4: switch EXT4_IOC_RESIZE_FS to mnt_want_write_file()
  btrfs: switch btrfs_ioctl_balance() to mnt_want_write_file()
  switch dentry_open() to struct path, make it grab references itself
  spufs: shift dget/mntget towards dentry_open()
  zoran: don't bother with struct file * in zoran_map
  ecryptfs: don't reinvent the wheels, please - use struct completion
  don't expose I_NEW inodes via dentry->d_inode
  tidy up namei.c a bit
  unobfuscate follow_up() a bit
  ext3: pass custom EOF to generic_file_llseek_size()
  ext4: use core vfs llseek code for dir seeks
  vfs: allow custom EOF in generic_file_llseek code
  vfs: Avoid unnecessary WB_SYNC_NONE writeback during sys_sync and reorder sync passes
  vfs: Remove unnecessary flushing of block devices
  vfs: Make sys_sync writeout also block device inodes
  vfs: Create function for iterating over block devices
  vfs: Reorder operations during sys_sync
  quota: Move quota syncing to ->sync_fs method
  quota: Split dquot_quota_sync() to writeback and cache flushing part
  vfs: Move noop_backing_dev_info check from sync into writeback
  ...
This commit is contained in:
Linus Torvalds 2012-07-23 12:27:27 -07:00
parent a6be1fcbc5 8cae6f7158
commit a66d2c8f7e
210 changed files with 2613 additions and 2402 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Documentation/filesystems/Locking
View File

@ -9,7 +9,7 @@ be able to use diff(1).
--------------------------- dentry_operations --------------------------
prototypes:
int (*d_revalidate)(struct dentry *, struct nameidata *);
int (*d_revalidate)(struct dentry *, unsigned int);
int (*d_hash)(const struct dentry *, const struct inode *,
struct qstr *);
int (*d_compare)(const struct dentry *, const struct inode *,
@ -37,9 +37,8 @@ d_manage: no no yes (ref-walk) maybe
--------------------------- inode_operations ---------------------------
prototypes:
int (*create) (struct inode *,struct dentry *,umode_t, struct nameidata *);
struct dentry * (*lookup) (struct inode *,struct dentry *, struct nameid
ata *);
int (*create) (struct inode *,struct dentry *,umode_t, bool);
struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
int (*link) (struct dentry *,struct inode *,struct dentry *);
int (*unlink) (struct inode *,struct dentry *);
int (*symlink) (struct inode *,struct dentry *,const char *);
@ -62,6 +61,9 @@ ata *);
int (*removexattr) (struct dentry *, const char *);
int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start, u64 len);
void (*update_time)(struct inode *, struct timespec *, int);
int (*atomic_open)(struct inode *, struct dentry *,
struct file *, unsigned open_flag,
umode_t create_mode, int *opened);
locking rules:
all may block
@ -89,6 +91,7 @@ listxattr: no
removexattr: yes
fiemap: no
update_time: no
atomic_open: yes
Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on
victim.

21
Documentation/filesystems/porting
View File

@ -355,12 +355,10 @@ protects *all* the dcache state of a given dentry.
via rcu-walk path walk (basically, if the file can have had a path name in the
vfs namespace).
i_dentry and i_rcu share storage in a union, and the vfs expects
i_dentry to be reinitialized before it is freed, so an:
INIT_LIST_HEAD(&inode->i_dentry);
must be done in the RCU callback.
Even though i_dentry and i_rcu share storage in a union, we will
initialize the former in inode_init_always(), so just leave it alone in
the callback. It used to be necessary to clean it there, but not anymore
(starting at 3.2).
--
[recommended]
@ -433,3 +431,14 @@ release it yourself.
d_alloc_root() is gone, along with a lot of bugs caused by code
misusing it. Replacement: d_make_root(inode). The difference is,
d_make_root() drops the reference to inode if dentry allocation fails.
--
[mandatory]
The witch is dead! Well, 2/3 of it, anyway. ->d_revalidate() and
->lookup() do *not* take struct nameidata anymore; just the flags.
--
[mandatory]
->create() doesn't take struct nameidata *; unlike the previous
two, it gets "is it an O_EXCL or equivalent?" boolean argument. Note that
local filesystems can ignore tha argument - they are guaranteed that the
object doesn't exist. It's remote/distributed ones that might care...

23
Documentation/filesystems/vfs.txt
View File

@ -341,8 +341,8 @@ This describes how the VFS can manipulate an inode in your
filesystem. As of kernel 2.6.22, the following members are defined:
struct inode_operations {
int (*create) (struct inode *,struct dentry *, umode_t, struct nameidata *);
struct dentry * (*lookup) (struct inode *,struct dentry *, struct nameidata *);
int (*create) (struct inode *,struct dentry *, umode_t, bool);
struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
int (*link) (struct dentry *,struct inode *,struct dentry *);
int (*unlink) (struct inode *,struct dentry *);
int (*symlink) (struct inode *,struct dentry *,const char *);
@ -364,6 +364,9 @@ struct inode_operations {
ssize_t (*listxattr) (struct dentry *, char *, size_t);
int (*removexattr) (struct dentry *, const char *);
void (*update_time)(struct inode *, struct timespec *, int);
int (*atomic_open)(struct inode *, struct dentry *,
struct file *, unsigned open_flag,
umode_t create_mode, int *opened);
};
Again, all methods are called without any locks being held, unless
@ -476,6 +479,14 @@ otherwise noted.
an inode. If this is not defined the VFS will update the inode itself
and call mark_inode_dirty_sync.
atomic_open: called on the last component of an open. Using this optional
method the filesystem can look up, possibly create and open the file in
one atomic operation. If it cannot perform this (e.g. the file type
turned out to be wrong) it may signal this by returning 1 instead of
usual 0 or -ve . This method is only called if the last
component is negative or needs lookup. Cached positive dentries are
still handled by f_op->open().
The Address Space Object
========================
@ -891,7 +902,7 @@ the VFS uses a default. As of kernel 2.6.22, the following members are
defined:
struct dentry_operations {
int (*d_revalidate)(struct dentry *, struct nameidata *);
int (*d_revalidate)(struct dentry *, unsigned int);
int (*d_hash)(const struct dentry *, const struct inode *,
struct qstr *);
int (*d_compare)(const struct dentry *, const struct inode *,
@ -910,11 +921,11 @@ struct dentry_operations {
dcache. Most filesystems leave this as NULL, because all their
dentries in the dcache are valid
d_revalidate may be called in rcu-walk mode (nd->flags & LOOKUP_RCU).
d_revalidate may be called in rcu-walk mode (flags & LOOKUP_RCU).
If in rcu-walk mode, the filesystem must revalidate the dentry without
blocking or storing to the dentry, d_parent and d_inode should not be
used without care (because they can go NULL), instead nd->inode should
be used.
used without care (because they can change and, in d_inode case, even
become NULL under us).
If a situation is encountered that rcu-walk cannot handle, return
-ECHILD and it will be called again in ref-walk mode.

48
arch/powerpc/platforms/cell/spufs/inode.c
View File

@ -317,28 +317,23 @@ spufs_mkdir(struct inode *dir, struct dentry *dentry, unsigned int flags,
return ret;
}
static int spufs_context_open(struct dentry *dentry, struct vfsmount *mnt)
static int spufs_context_open(struct path *path)
{
int ret;
struct file *filp;
ret = get_unused_fd();
if (ret < 0) {
dput(dentry);
mntput(mnt);
goto out;
}
if (ret < 0)
return ret;
filp = dentry_open(dentry, mnt, O_RDONLY, current_cred());
filp = dentry_open(path, O_RDONLY, current_cred());
if (IS_ERR(filp)) {
put_unused_fd(ret);
ret = PTR_ERR(filp);
goto out;
return PTR_ERR(filp);
}
filp->f_op = &spufs_context_fops;
fd_install(ret, filp);
out:
return ret;
}
@ -453,6 +448,7 @@ spufs_create_context(struct inode *inode, struct dentry *dentry,
int affinity;
struct spu_gang *gang;
struct spu_context *neighbor;
struct path path = {.mnt = mnt, .dentry = dentry};
ret = -EPERM;
if ((flags & SPU_CREATE_NOSCHED) &&
@ -495,11 +491,7 @@ spufs_create_context(struct inode *inode, struct dentry *dentry,
put_spu_context(neighbor);
}
/*
* get references for dget and mntget, will be released
* in error path of *_open().
*/
ret = spufs_context_open(dget(dentry), mntget(mnt));
ret = spufs_context_open(&path);
if (ret < 0) {
WARN_ON(spufs_rmdir(inode, dentry));
if (affinity)
@ -556,28 +548,27 @@ spufs_mkgang(struct inode *dir, struct dentry *dentry, umode_t mode)
return ret;
}
static int spufs_gang_open(struct dentry *dentry, struct vfsmount *mnt)
static int spufs_gang_open(struct path *path)
{
int ret;
struct file *filp;
ret = get_unused_fd();
if (ret < 0) {
dput(dentry);
mntput(mnt);
goto out;
}
if (ret < 0)
return ret;
filp = dentry_open(dentry, mnt, O_RDONLY, current_cred());
/*
* get references for dget and mntget, will be released
* in error path of *_open().
*/
filp = dentry_open(path, O_RDONLY, current_cred());
if (IS_ERR(filp)) {
put_unused_fd(ret);
ret = PTR_ERR(filp);
goto out;
return PTR_ERR(filp);
}
filp->f_op = &simple_dir_operations;
fd_install(ret, filp);
out:
return ret;
}
@ -585,17 +576,14 @@ static int spufs_create_gang(struct inode *inode,
struct dentry *dentry,
struct vfsmount *mnt, umode_t mode)
{
struct path path = {.mnt = mnt, .dentry = dentry};
int ret;
ret = spufs_mkgang(inode, dentry, mode & S_IRWXUGO);
if (ret)
goto out;
/*
* get references for dget and mntget, will be released
* in error path of *_open().
*/
ret = spufs_gang_open(dget(dentry), mntget(mnt));
ret = spufs_gang_open(&path);
if (ret < 0) {
int err = simple_rmdir(inode, dentry);
WARN_ON(err);

98
drivers/base/devtmpfs.c
View File

@ -227,33 +227,24 @@ static int handle_create(const char *nodename, umode_t mode, struct device *dev)
static int dev_rmdir(const char *name)
{
struct nameidata nd;
struct path parent;
struct dentry *dentry;
int err;
err = kern_path_parent(name, &nd);
if (err)
return err;
mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
dentry = lookup_one_len(nd.last.name, nd.path.dentry, nd.last.len);
if (!IS_ERR(dentry)) {
if (dentry->d_inode) {
if (dentry->d_inode->i_private == &thread)
err = vfs_rmdir(nd.path.dentry->d_inode,
dentry);
else
err = -EPERM;
} else {
err = -ENOENT;
}
dput(dentry);
dentry = kern_path_locked(name, &parent);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
if (dentry->d_inode) {
if (dentry->d_inode->i_private == &thread)
err = vfs_rmdir(parent.dentry->d_inode, dentry);
else
err = -EPERM;
} else {
err = PTR_ERR(dentry);
err = -ENOENT;
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_put(&nd.path);
dput(dentry);
mutex_unlock(&parent.dentry->d_inode->i_mutex);
path_put(&parent);
return err;
}
@ -305,50 +296,43 @@ static int dev_mynode(struct device *dev, struct inode *inode, struct kstat *sta
static int handle_remove(const char *nodename, struct device *dev)
{
struct nameidata nd;
struct path parent;
struct dentry *dentry;
struct kstat stat;
int deleted = 1;
int err;
err = kern_path_parent(nodename, &nd);
if (err)
return err;
dentry = kern_path_locked(nodename, &parent);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
dentry = lookup_one_len(nd.last.name, nd.path.dentry, nd.last.len);
if (!IS_ERR(dentry)) {
if (dentry->d_inode) {
err = vfs_getattr(nd.path.mnt, dentry, &stat);
if (!err && dev_mynode(dev, dentry->d_inode, &stat)) {
struct iattr newattrs;
/*
* before unlinking this node, reset permissions
* of possible references like hardlinks
*/
newattrs.ia_uid = 0;
newattrs.ia_gid = 0;
newattrs.ia_mode = stat.mode & ~0777;
newattrs.ia_valid =
ATTR_UID|ATTR_GID|ATTR_MODE;
mutex_lock(&dentry->d_inode->i_mutex);
notify_change(dentry, &newattrs);
mutex_unlock(&dentry->d_inode->i_mutex);
err = vfs_unlink(nd.path.dentry->d_inode,
dentry);
if (!err || err == -ENOENT)
deleted = 1;
}
} else {
err = -ENOENT;
if (dentry->d_inode) {
struct kstat stat;
err = vfs_getattr(parent.mnt, dentry, &stat);
if (!err && dev_mynode(dev, dentry->d_inode, &stat)) {
struct iattr newattrs;
/*
* before unlinking this node, reset permissions
* of possible references like hardlinks
*/
newattrs.ia_uid = 0;
newattrs.ia_gid = 0;
newattrs.ia_mode = stat.mode & ~0777;
newattrs.ia_valid =
ATTR_UID|ATTR_GID|ATTR_MODE;
mutex_lock(&dentry->d_inode->i_mutex);
notify_change(dentry, &newattrs);
mutex_unlock(&dentry->d_inode->i_mutex);
err = vfs_unlink(parent.dentry->d_inode, dentry);
if (!err || err == -ENOENT)
deleted = 1;
}
dput(dentry);
} else {
err = PTR_ERR(dentry);
err = -ENOENT;
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
dput(dentry);
mutex_unlock(&parent.dentry->d_inode->i_mutex);
path_put(&nd.path);
path_put(&parent);
if (deleted && strchr(nodename, '/'))
delete_path(nodename);
return err;

4
drivers/media/video/zoran/zoran.h
View File

@ -172,8 +172,10 @@ struct zoran_jpg_settings {
struct v4l2_jpegcompression jpg_comp; /* JPEG-specific capture settings */
};
struct zoran_fh;
struct zoran_mapping {
struct file *file;
struct zoran_fh *fh;
int count;
};

4
drivers/media/video/zoran/zoran_driver.c
View File

@ -2811,7 +2811,7 @@ static void
zoran_vm_close (struct vm_area_struct *vma)
{
struct zoran_mapping *map = vma->vm_private_data;
struct zoran_fh *fh = map->file->private_data;
struct zoran_fh *fh = map->fh;
struct zoran *zr = fh->zr;
int i;
@ -2938,7 +2938,7 @@ zoran_mmap (struct file *file,
res = -ENOMEM;
goto mmap_unlock_and_return;
}
map->file = file;
map->fh = fh;
map->count = 1;
vma->vm_ops = &zoran_vm_ops;

4
drivers/mtd/mtdsuper.c
View File

@ -63,7 +63,7 @@ static struct dentry *mount_mtd_aux(struct file_system_type *fs_type, int flags,
struct super_block *sb;
int ret;
sb = sget(fs_type, get_sb_mtd_compare, get_sb_mtd_set, mtd);
sb = sget(fs_type, get_sb_mtd_compare, get_sb_mtd_set, flags, mtd);
if (IS_ERR(sb))
goto out_error;
@ -74,8 +74,6 @@ static struct dentry *mount_mtd_aux(struct file_system_type *fs_type, int flags,
pr_debug("MTDSB: New superblock for device %d (\"%s\")\n",
mtd->index, mtd->name);
sb->s_flags = flags;
ret = fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
if (ret < 0) {
deactivate_locked_super(sb);

2
fs/9p/v9fs.h
View File

@ -144,7 +144,7 @@ extern void v9fs_session_close(struct v9fs_session_info *v9ses);
extern void v9fs_session_cancel(struct v9fs_session_info *v9ses);
extern void v9fs_session_begin_cancel(struct v9fs_session_info *v9ses);
extern struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nameidata);
unsigned int flags);
extern int v9fs_vfs_unlink(struct inode *i, struct dentry *d);
extern int v9fs_vfs_rmdir(struct inode *i, struct dentry *d);
extern int v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,

4
fs/9p/vfs_dentry.c
View File

@ -100,13 +100,13 @@ static void v9fs_dentry_release(struct dentry *dentry)
}
}
static int v9fs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
static int v9fs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
{
struct p9_fid *fid;
struct inode *inode;
struct v9fs_inode *v9inode;
if (nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
inode = dentry->d_inode;

170
fs/9p/vfs_inode.c
View File

@ -712,88 +712,34 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir,
}
/**
* v9fs_vfs_create - VFS hook to create files
* v9fs_vfs_create - VFS hook to create a regular file
*
* open(.., O_CREAT) is handled in v9fs_vfs_atomic_open(). This is only called
* for mknod(2).
*
* @dir: directory inode that is being created
* @dentry: dentry that is being deleted
* @mode: create permissions
* @nd: path information
*
*/
static int
v9fs_vfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
int err;
u32 perm;
int flags;
struct file *filp;
struct v9fs_inode *v9inode;
struct v9fs_session_info *v9ses;
struct p9_fid *fid, *inode_fid;
struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir);
u32 perm = unixmode2p9mode(v9ses, mode);
struct p9_fid *fid;
err = 0;
fid = NULL;
v9ses = v9fs_inode2v9ses(dir);
perm = unixmode2p9mode(v9ses, mode);
if (nd)
flags = nd->intent.open.flags;
else
flags = O_RDWR;
fid = v9fs_create(v9ses, dir, dentry, NULL, perm,
v9fs_uflags2omode(flags,
v9fs_proto_dotu(v9ses)));
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
goto error;
}
/* P9_OEXCL? */
fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_ORDWR);
if (IS_ERR(fid))
return PTR_ERR(fid);
v9fs_invalidate_inode_attr(dir);
/* if we are opening a file, assign the open fid to the file */
if (nd) {
v9inode = V9FS_I(dentry->d_inode);
mutex_lock(&v9inode->v_mutex);
if (v9ses->cache && !v9inode->writeback_fid &&
((flags & O_ACCMODE) != O_RDONLY)) {
/*
* clone a fid and add it to writeback_fid
* we do it during open time instead of
* page dirty time via write_begin/page_mkwrite
* because we want write after unlink usecase
* to work.
*/
inode_fid = v9fs_writeback_fid(dentry);
if (IS_ERR(inode_fid)) {
err = PTR_ERR(inode_fid);
mutex_unlock(&v9inode->v_mutex);
goto error;
}
v9inode->writeback_fid = (void *) inode_fid;
}
mutex_unlock(&v9inode->v_mutex);
filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
if (IS_ERR(filp)) {
err = PTR_ERR(filp);
goto error;
}
filp->private_data = fid;
#ifdef CONFIG_9P_FSCACHE
if (v9ses->cache)
v9fs_cache_inode_set_cookie(dentry->d_inode, filp);
#endif
} else
p9_client_clunk(fid);
p9_client_clunk(fid);
return 0;
error:
if (fid)
p9_client_clunk(fid);
return err;
}
/**
@ -839,7 +785,7 @@ static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
*/
struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nameidata)
unsigned int flags)
{
struct dentry *res;
struct super_block *sb;
@ -849,8 +795,8 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
char *name;
int result = 0;
p9_debug(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n",
dir, dentry->d_name.name, dentry, nameidata);
p9_debug(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p flags: %x\n",
dir, dentry->d_name.name, dentry, flags);
if (dentry->d_name.len > NAME_MAX)
return ERR_PTR(-ENAMETOOLONG);
@ -910,6 +856,86 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
return ERR_PTR(result);
}
static int
v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned flags, umode_t mode,
int *opened)
{
int err;
u32 perm;
struct v9fs_inode *v9inode;
struct v9fs_session_info *v9ses;
struct p9_fid *fid, *inode_fid;
struct dentry *res = NULL;
if (d_unhashed(dentry)) {
res = v9fs_vfs_lookup(dir, dentry, 0);
if (IS_ERR(res))
return PTR_ERR(res);
if (res)
dentry = res;
}
/* Only creates */
if (!(flags & O_CREAT) || dentry->d_inode)
return finish_no_open(file, res);
err = 0;
fid = NULL;
v9ses = v9fs_inode2v9ses(dir);
perm = unixmode2p9mode(v9ses, mode);
fid = v9fs_create(v9ses, dir, dentry, NULL, perm,
v9fs_uflags2omode(flags,
v9fs_proto_dotu(v9ses)));
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
goto error;
}
v9fs_invalidate_inode_attr(dir);
v9inode = V9FS_I(dentry->d_inode);
mutex_lock(&v9inode->v_mutex);
if (v9ses->cache && !v9inode->writeback_fid &&
((flags & O_ACCMODE) != O_RDONLY)) {
/*
* clone a fid and add it to writeback_fid
* we do it during open time instead of
* page dirty time via write_begin/page_mkwrite
* because we want write after unlink usecase
* to work.
*/
inode_fid = v9fs_writeback_fid(dentry);
if (IS_ERR(inode_fid)) {
err = PTR_ERR(inode_fid);
mutex_unlock(&v9inode->v_mutex);
goto error;
}
v9inode->writeback_fid = (void *) inode_fid;
}
mutex_unlock(&v9inode->v_mutex);
err = finish_open(file, dentry, generic_file_open, opened);
if (err)
goto error;
file->private_data = fid;
#ifdef CONFIG_9P_FSCACHE
if (v9ses->cache)
v9fs_cache_inode_set_cookie(dentry->d_inode, file);
#endif
*opened |= FILE_CREATED;
out:
dput(res);
return err;
error:
if (fid)
p9_client_clunk(fid);
goto out;
}
/**
* v9fs_vfs_unlink - VFS unlink hook to delete an inode
* @i: inode that is being unlinked
@ -1488,6 +1514,7 @@ int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode)
static const struct inode_operations v9fs_dir_inode_operations_dotu = {
.create = v9fs_vfs_create,
.lookup = v9fs_vfs_lookup,
.atomic_open = v9fs_vfs_atomic_open,
.symlink = v9fs_vfs_symlink,
.link = v9fs_vfs_link,
.unlink = v9fs_vfs_unlink,
@ -1502,6 +1529,7 @@ static const struct inode_operations v9fs_dir_inode_operations_dotu = {
static const struct inode_operations v9fs_dir_inode_operations = {
.create = v9fs_vfs_create,
.lookup = v9fs_vfs_lookup,
.atomic_open = v9fs_vfs_atomic_open,
.unlink = v9fs_vfs_unlink,
.mkdir = v9fs_vfs_mkdir,
.rmdir = v9fs_vfs_rmdir,

59
fs/9p/vfs_inode_dotl.c
View File

@ -230,20 +230,25 @@ int v9fs_open_to_dotl_flags(int flags)
* @dir: directory inode that is being created
* @dentry: dentry that is being deleted
* @mode: create permissions
* @nd: path information
*
*/
static int
v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
struct nameidata *nd)
bool excl)
{
return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0);
}
static int
v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned flags, umode_t omode,
int *opened)
{
int err = 0;
gid_t gid;
int flags;
umode_t mode;
char *name = NULL;
struct file *filp;
struct p9_qid qid;
struct inode *inode;
struct p9_fid *fid = NULL;
@ -251,18 +256,22 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
struct p9_fid *dfid, *ofid, *inode_fid;
struct v9fs_session_info *v9ses;
struct posix_acl *pacl = NULL, *dacl = NULL;
struct dentry *res = NULL;
if (d_unhashed(dentry)) {
res = v9fs_vfs_lookup(dir, dentry, 0);
if (IS_ERR(res))
return PTR_ERR(res);
if (res)
dentry = res;
}
/* Only creates */
if (!(flags & O_CREAT) || dentry->d_inode)
return finish_no_open(file, res);
v9ses = v9fs_inode2v9ses(dir);
if (nd)
flags = nd->intent.open.flags;
else {
/*
* create call without LOOKUP_OPEN is due
* to mknod of regular files. So use mknod
* operation.
*/
return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0);
}
name = (char *) dentry->d_name.name;
p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%hx\n",
@ -272,7 +281,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
if (IS_ERR(dfid)) {
err = PTR_ERR(dfid);
p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
return err;
goto out;
}
/* clone a fid to use for creation */
@ -280,7 +289,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
if (IS_ERR(ofid)) {
err = PTR_ERR(ofid);
p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
return err;
goto out;
}
gid = v9fs_get_fsgid_for_create(dir);
@ -345,17 +354,18 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
}
mutex_unlock(&v9inode->v_mutex);
/* Since we are opening a file, assign the open fid to the file */
filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
if (IS_ERR(filp)) {
err = PTR_ERR(filp);
err = finish_open(file, dentry, generic_file_open, opened);
if (err)
goto err_clunk_old_fid;
}
filp->private_data = ofid;
file->private_data = ofid;
#ifdef CONFIG_9P_FSCACHE
if (v9ses->cache)
v9fs_cache_inode_set_cookie(inode, filp);
v9fs_cache_inode_set_cookie(inode, file);
#endif
return 0;
*opened |= FILE_CREATED;
out:
dput(res);
return err;
error:
if (fid)
@ -364,7 +374,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
if (ofid)
p9_client_clunk(ofid);
v9fs_set_create_acl(NULL, &dacl, &pacl);
return err;
goto out;
}
/**
@ -982,6 +992,7 @@ int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode)
const struct inode_operations v9fs_dir_inode_operations_dotl = {
.create = v9fs_vfs_create_dotl,
.atomic_open = v9fs_vfs_atomic_open_dotl,
.lookup = v9fs_vfs_lookup,
.link = v9fs_vfs_link_dotl,
.symlink = v9fs_vfs_symlink_dotl,

4
fs/9p/vfs_super.c
View File

@ -89,7 +89,7 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
if (v9ses->cache)
sb->s_bdi->ra_pages = (VM_MAX_READAHEAD * 1024)/PAGE_CACHE_SIZE;
sb->s_flags = flags | MS_ACTIVE | MS_DIRSYNC | MS_NOATIME;
sb->s_flags |= MS_ACTIVE | MS_DIRSYNC | MS_NOATIME;
if (!v9ses->cache)
sb->s_flags |= MS_SYNCHRONOUS;
@ -137,7 +137,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
goto close_session;
}
sb = sget(fs_type, NULL, v9fs_set_super, v9ses);
sb = sget(fs_type, NULL, v9fs_set_super, flags, v9ses);
if (IS_ERR(sb)) {
retval = PTR_ERR(sb);
goto clunk_fid;

2
fs/adfs/dir.c
View File

@ -266,7 +266,7 @@ const struct dentry_operations adfs_dentry_operations = {
};
static struct dentry *
adfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
adfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
struct inode *inode = NULL;
struct object_info obj;

1
fs/adfs/super.c
View File

@ -246,7 +246,6 @@ static struct inode *adfs_alloc_inode(struct super_block *sb)
static void adfs_i_callback(struct rcu_head *head)
{
struct inode *inode = container_of(head, struct inode, i_rcu);
INIT_LIST_HEAD(&inode->i_dentry);
kmem_cache_free(adfs_inode_cachep, ADFS_I(inode));
}

11
fs/affs/affs.h
View File

@ -3,6 +3,7 @@
#include <linux/buffer_head.h>
#include <linux/amigaffs.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
/* AmigaOS allows file names with up to 30 characters length.
* Names longer than that will be silently truncated. If you
@ -100,6 +101,10 @@ struct affs_sb_info {
char *s_prefix; /* Prefix for volumes and assigns. */
char s_volume[32]; /* Volume prefix for absolute symlinks. */
spinlock_t symlink_lock; /* protects the previous two */
struct super_block *sb; /* the VFS superblock object */
int work_queued; /* non-zero delayed work is queued */
struct delayed_work sb_work; /* superblock flush delayed work */
spinlock_t work_lock; /* protects sb_work and work_queued */
};
#define SF_INTL 0x0001 /* International filesystem. */
@ -120,6 +125,8 @@ static inline struct affs_sb_info *AFFS_SB(struct super_block *sb)
return sb->s_fs_info;
}
void affs_mark_sb_dirty(struct super_block *sb);
/* amigaffs.c */
extern int affs_insert_hash(struct inode *inode, struct buffer_head *bh);
@ -146,9 +153,9 @@ extern void affs_free_bitmap(struct super_block *sb);
/* namei.c */
extern int affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len);
extern struct dentry *affs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *);
extern struct dentry *affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int);
extern int affs_unlink(struct inode *dir, struct dentry *dentry);
extern int affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, struct nameidata *);
extern int affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool);
extern int affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
extern int affs_rmdir(struct inode *dir, struct dentry *dentry);
extern int affs_link(struct dentry *olddentry, struct inode *dir,

22
fs/affs/amigaffs.c
View File

@ -122,22 +122,16 @@ affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh)
}
static void
affs_fix_dcache(struct dentry *dentry, u32 entry_ino)
affs_fix_dcache(struct inode *inode, u32 entry_ino)
{
struct inode *inode = dentry->d_inode;
void *data = dentry->d_fsdata;
struct list_head *head, *next;
struct dentry *dentry;
struct hlist_node *p;
spin_lock(&inode->i_lock);
head = &inode->i_dentry;
next = head->next;
while (next != head) {
dentry = list_entry(next, struct dentry, d_alias);
hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) {
if (entry_ino == (u32)(long)dentry->d_fsdata) {
dentry->d_fsdata = data;
dentry->d_fsdata = (void *)inode->i_ino;
break;
}
next = next->next;
}
spin_unlock(&inode->i_lock);
}
@ -177,7 +171,11 @@ affs_remove_link(struct dentry *dentry)
}
affs_lock_dir(dir);
affs_fix_dcache(dentry, link_ino);
/*
* if there's a dentry for that block, make it
* refer to inode itself.
*/
affs_fix_dcache(inode, link_ino);
retval = affs_remove_hash(dir, link_bh);
if (retval) {
affs_unlock_dir(dir);

4
fs/affs/bitmap.c
View File

@ -103,7 +103,7 @@ affs_free_block(struct super_block *sb, u32 block)
*(__be32 *)bh->b_data = cpu_to_be32(tmp - mask);
mark_buffer_dirty(bh);
sb->s_dirt = 1;
affs_mark_sb_dirty(sb);
bm->bm_free++;
mutex_unlock(&sbi->s_bmlock);
@ -248,7 +248,7 @@ affs_alloc_block(struct inode *inode, u32 goal)
*(__be32 *)bh->b_data = cpu_to_be32(tmp + mask);
mark_buffer_dirty(bh);
sb->s_dirt = 1;
affs_mark_sb_dirty(sb);
mutex_unlock(&sbi->s_bmlock);

4
fs/affs/namei.c
View File

@ -211,7 +211,7 @@ affs_find_entry(struct inode *dir, struct dentry *dentry)
}
struct dentry *
affs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
struct super_block *sb = dir->i_sb;
struct buffer_head *bh;
@ -255,7 +255,7 @@ affs_unlink(struct inode *dir, struct dentry *dentry)
}
int
affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, struct nameidata *nd)
affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl)
{
struct super_block *sb = dir->i_sb;
struct inode *inode;

70
fs/affs/super.c
View File

@ -17,6 +17,7 @@
#include <linux/magic.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/writeback.h>
#include "affs.h"
extern struct timezone sys_tz;
@ -25,15 +26,17 @@ static int affs_statfs(struct dentry *dentry, struct kstatfs *buf);
static int affs_remount (struct super_block *sb, int *flags, char *data);
static void
affs_commit_super(struct super_block *sb, int wait, int clean)
affs_commit_super(struct super_block *sb, int wait)
{
struct affs_sb_info *sbi = AFFS_SB(sb);
struct buffer_head *bh = sbi->s_root_bh;
struct affs_root_tail *tail = AFFS_ROOT_TAIL(sb, bh);
tail->bm_flag = cpu_to_be32(clean);
lock_buffer(bh);
secs_to_datestamp(get_seconds(), &tail->disk_change);
affs_fix_checksum(sb, bh);
unlock_buffer(bh);
mark_buffer_dirty(bh);
if (wait)
sync_dirty_buffer(bh);
@ -45,9 +48,7 @@ affs_put_super(struct super_block *sb)
struct affs_sb_info *sbi = AFFS_SB(sb);
pr_debug("AFFS: put_super()\n");
if (!(sb->s_flags & MS_RDONLY) && sb->s_dirt)
affs_commit_super(sb, 1, 1);
cancel_delayed_work_sync(&sbi->sb_work);
kfree(sbi->s_prefix);
affs_free_bitmap(sb);
affs_brelse(sbi->s_root_bh);
@ -55,28 +56,45 @@ affs_put_super(struct super_block *sb)
sb->s_fs_info = NULL;
}
static void
affs_write_super(struct super_block *sb)
{
lock_super(sb);
if (!(sb->s_flags & MS_RDONLY))
affs_commit_super(sb, 1, 2);
sb->s_dirt = 0;
unlock_super(sb);
pr_debug("AFFS: write_super() at %lu, clean=2\n", get_seconds());
}
static int
affs_sync_fs(struct super_block *sb, int wait)
{
lock_super(sb);
affs_commit_super(sb, wait, 2);
sb->s_dirt = 0;
unlock_super(sb);
affs_commit_super(sb, wait);
return 0;
}
static void flush_superblock(struct work_struct *work)
{
struct affs_sb_info *sbi;
struct super_block *sb;
sbi = container_of(work, struct affs_sb_info, sb_work.work);
sb = sbi->sb;
spin_lock(&sbi->work_lock);
sbi->work_queued = 0;
spin_unlock(&sbi->work_lock);
affs_commit_super(sb, 1);
}
void affs_mark_sb_dirty(struct super_block *sb)
{
struct affs_sb_info *sbi = AFFS_SB(sb);
unsigned long delay;
if (sb->s_flags & MS_RDONLY)
return;
spin_lock(&sbi->work_lock);
if (!sbi->work_queued) {
delay = msecs_to_jiffies(dirty_writeback_interval * 10);
queue_delayed_work(system_long_wq, &sbi->sb_work, delay);
sbi->work_queued = 1;
}
spin_unlock(&sbi->work_lock);
}
static struct kmem_cache * affs_inode_cachep;
static struct inode *affs_alloc_inode(struct super_block *sb)
@ -138,7 +156,6 @@ static const struct super_operations affs_sops = {
.write_inode = affs_write_inode,
.evict_inode = affs_evict_inode,
.put_super = affs_put_super,
.write_super = affs_write_super,
.sync_fs = affs_sync_fs,
.statfs = affs_statfs,
.remount_fs = affs_remount,
@ -305,8 +322,11 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
return -ENOMEM;
sb->s_fs_info = sbi;
sbi->sb = sb;
mutex_init(&sbi->s_bmlock);
spin_lock_init(&sbi->symlink_lock);
spin_lock_init(&sbi->work_lock);
INIT_DELAYED_WORK(&sbi->sb_work, flush_superblock);
if (!parse_options(data,&uid,&gid,&i,&reserved,&root_block,
&blocksize,&sbi->s_prefix,
@ -531,6 +551,7 @@ affs_remount(struct super_block *sb, int *flags, char *data)
return -EINVAL;
}
flush_delayed_work_sync(&sbi->sb_work);
replace_mount_options(sb, new_opts);
sbi->s_flags = mount_flags;
@ -549,10 +570,9 @@ affs_remount(struct super_block *sb, int *flags, char *data)
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
return 0;
if (*flags & MS_RDONLY) {
affs_write_super(sb);
if (*flags & MS_RDONLY)
affs_free_bitmap(sb);
} else
else
res = affs_init_bitmap(sb, flags);
return res;

14
fs/afs/dir.c
View File

@ -20,16 +20,16 @@
#include "internal.h"
static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd);
unsigned int flags);
static int afs_dir_open(struct inode *inode, struct file *file);
static int afs_readdir(struct file *file, void *dirent, filldir_t filldir);
static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd);
static int afs_d_revalidate(struct dentry *dentry, unsigned int flags);
static int afs_d_delete(const struct dentry *dentry);
static void afs_d_release(struct dentry *dentry);
static int afs_lookup_filldir(void *_cookie, const char *name, int nlen,
loff_t fpos, u64 ino, unsigned dtype);
static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd);
bool excl);
static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
static int afs_rmdir(struct inode *dir, struct dentry *dentry);
static int afs_unlink(struct inode *dir, struct dentry *dentry);
@ -516,7 +516,7 @@ static struct inode *afs_try_auto_mntpt(
* look up an entry in a directory
*/
static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct afs_vnode *vnode;
struct afs_fid fid;
@ -598,7 +598,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
* - NOTE! the hit can be a negative hit too, so we can't assume we have an
* inode
*/
static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
{
struct afs_vnode *vnode, *dir;
struct afs_fid uninitialized_var(fid);
@ -607,7 +607,7 @@ static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
void *dir_version;
int ret;
if (nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
vnode = AFS_FS_I(dentry->d_inode);
@ -949,7 +949,7 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry)
* create a regular file on an AFS filesystem
*/
static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
struct afs_file_status status;
struct afs_callback cb;

4
fs/afs/mntpt.c
View File

@ -22,7 +22,7 @@
static struct dentry *afs_mntpt_lookup(struct inode *dir,
struct dentry *dentry,
struct nameidata *nd);
unsigned int flags);
static int afs_mntpt_open(struct inode *inode, struct file *file);
static void afs_mntpt_expiry_timed_out(struct work_struct *work);
@ -104,7 +104,7 @@ int afs_mntpt_check_symlink(struct afs_vnode *vnode, struct key *key)
*/
static struct dentry *afs_mntpt_lookup(struct inode *dir,
struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
_enter("%p,%p{%p{%s},%s}",
dir,

3
fs/afs/super.c
View File

@ -395,7 +395,7 @@ static struct dentry *afs_mount(struct file_system_type *fs_type,
as->volume = vol;
/* allocate a deviceless superblock */
sb = sget(fs_type, afs_test_super, afs_set_super, as);
sb = sget(fs_type, afs_test_super, afs_set_super, flags, as);
if (IS_ERR(sb)) {
ret = PTR_ERR(sb);
afs_put_volume(vol);
@ -406,7 +406,6 @@ static struct dentry *afs_mount(struct file_system_type *fs_type,
if (!sb->s_root) {
/* initial superblock/root creation */
_debug("create");
sb->s_flags = flags;
ret = afs_fill_super(sb, &params);
if (ret < 0) {
deactivate_locked_super(sb);

73
fs/aio.c
View File

@ -56,13 +56,6 @@ static struct kmem_cache *kioctx_cachep;
static struct workqueue_struct *aio_wq;
/* Used for rare fput completion. */
static void aio_fput_routine(struct work_struct *);
static DECLARE_WORK(fput_work, aio_fput_routine);
static DEFINE_SPINLOCK(fput_lock);
static LIST_HEAD(fput_head);
static void aio_kick_handler(struct work_struct *);
static void aio_queue_work(struct kioctx *);
@ -479,7 +472,6 @@ static int kiocb_batch_refill(struct kioctx *ctx, struct kiocb_batch *batch)
{
unsigned short allocated, to_alloc;
long avail;
bool called_fput = false;
struct kiocb *req, *n;
struct aio_ring *ring;
@ -495,28 +487,11 @@ static int kiocb_batch_refill(struct kioctx *ctx, struct kiocb_batch *batch)
if (allocated == 0)
goto out;
retry:
spin_lock_irq(&ctx->ctx_lock);
ring = kmap_atomic(ctx->ring_info.ring_pages[0]);
avail = aio_ring_avail(&ctx->ring_info, ring) - ctx->reqs_active;
BUG_ON(avail < 0);
if (avail == 0 && !called_fput) {
/*
* Handle a potential starvation case. It is possible that
* we hold the last reference on a struct file, causing us
* to delay the final fput to non-irq context. In this case,
* ctx->reqs_active is artificially high. Calling the fput
* routine here may free up a slot in the event completion
* ring, allowing this allocation to succeed.
*/
kunmap_atomic(ring);
spin_unlock_irq(&ctx->ctx_lock);
aio_fput_routine(NULL);
called_fput = true;
goto retry;
}
if (avail < allocated) {
/* Trim back the number of requests. */
list_for_each_entry_safe(req, n, &batch->head, ki_batch) {
@ -570,36 +545,6 @@ static inline void really_put_req(struct kioctx *ctx, struct kiocb *req)
wake_up_all(&ctx->wait);
}
static void aio_fput_routine(struct work_struct *data)
{
spin_lock_irq(&fput_lock);
while (likely(!list_empty(&fput_head))) {
struct kiocb *req = list_kiocb(fput_head.next);
struct kioctx *ctx = req->ki_ctx;
list_del(&req->ki_list);
spin_unlock_irq(&fput_lock);
/* Complete the fput(s) */
if (req->ki_filp != NULL)
fput(req->ki_filp);
/* Link the iocb into the context's free list */
rcu_read_lock();
spin_lock_irq(&ctx->ctx_lock);
really_put_req(ctx, req);
/*
* at that point ctx might've been killed, but actual
* freeing is RCU'd
*/
spin_unlock_irq(&ctx->ctx_lock);
rcu_read_unlock();
spin_lock_irq(&fput_lock);
}
spin_unlock_irq(&fput_lock);
}
/* __aio_put_req
* Returns true if this put was the last user of the request.
*/
@ -618,21 +563,9 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
req->ki_cancel = NULL;
req->ki_retry = NULL;
/*
* Try to optimize the aio and eventfd file* puts, by avoiding to
* schedule work in case it is not final fput() time. In normal cases,
* we would not be holding the last reference to the file*, so
* this function will be executed w/out any aio kthread wakeup.
*/
if (unlikely(!fput_atomic(req->ki_filp))) {
spin_lock(&fput_lock);
list_add(&req->ki_list, &fput_head);
spin_unlock(&fput_lock);
schedule_work(&fput_work);
} else {
req->ki_filp = NULL;
really_put_req(ctx, req);
}
fput(req->ki_filp);
req->ki_filp = NULL;
really_put_req(ctx, req);
return 1;
}

3
fs/attr.c
View File

@ -171,6 +171,8 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
struct timespec now;
unsigned int ia_valid = attr->ia_valid;
WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex));
if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_TIMES_SET)) {
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return -EPERM;
@ -250,5 +252,4 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
return error;
}
EXPORT_SYMBOL(notify_change);

4
fs/autofs4/dev-ioctl.c
View File

@ -257,8 +257,8 @@ static int autofs_dev_ioctl_open_mountpoint(const char *name, dev_t devid)
* corresponding to the autofs fs we want to open.
*/
filp = dentry_open(path.dentry, path.mnt, O_RDONLY,
current_cred());
filp = dentry_open(&path, O_RDONLY, current_cred());
path_put(&path);
if (IS_ERR(filp)) {
err = PTR_ERR(filp);
goto out;

4
fs/autofs4/root.c
View File

@ -32,7 +32,7 @@ static long autofs4_root_ioctl(struct file *,unsigned int,unsigned long);
static long autofs4_root_compat_ioctl(struct file *,unsigned int,unsigned long);
#endif
static int autofs4_dir_open(struct inode *inode, struct file *file);
static struct dentry *autofs4_lookup(struct inode *,struct dentry *, struct nameidata *);
static struct dentry *autofs4_lookup(struct inode *,struct dentry *, unsigned int);
static struct vfsmount *autofs4_d_automount(struct path *);
static int autofs4_d_manage(struct dentry *, bool);
static void autofs4_dentry_release(struct dentry *);
@ -458,7 +458,7 @@ int autofs4_d_manage(struct dentry *dentry, bool rcu_walk)
}
/* Lookups in the root directory */
static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
struct autofs_sb_info *sbi;
struct autofs_info *ino;

4
fs/bad_inode.c
View File

@ -173,13 +173,13 @@ static const struct file_operations bad_file_ops =
};
static int bad_inode_create (struct inode *dir, struct dentry *dentry,
umode_t mode, struct nameidata *nd)
umode_t mode, bool excl)
{
return -EIO;
}
static struct dentry *bad_inode_lookup(struct inode *dir,
struct dentry *dentry, struct nameidata *nd)
struct dentry *dentry, unsigned int flags)
{
return ERR_PTR(-EIO);
}

4
fs/befs/linuxvfs.c
View File

@ -34,7 +34,7 @@ static int befs_readdir(struct file *, void *, filldir_t);
static int befs_get_block(struct inode *, sector_t, struct buffer_head *, int);
static int befs_readpage(struct file *file, struct page *page);
static sector_t befs_bmap(struct address_space *mapping, sector_t block);
static struct dentry *befs_lookup(struct inode *, struct dentry *, struct nameidata *);
static struct dentry *befs_lookup(struct inode *, struct dentry *, unsigned int);
static struct inode *befs_iget(struct super_block *, unsigned long);
static struct inode *befs_alloc_inode(struct super_block *sb);
static void befs_destroy_inode(struct inode *inode);
@ -159,7 +159,7 @@ befs_get_block(struct inode *inode, sector_t block,
}
static struct dentry *
befs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
befs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
struct inode *inode = NULL;
struct super_block *sb = dir->i_sb;

4
fs/bfs/dir.c
View File

@ -85,7 +85,7 @@ const struct file_operations bfs_dir_operations = {
extern void dump_imap(const char *, struct super_block *);
static int bfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
int err;
struct inode *inode;
@ -133,7 +133,7 @@ static int bfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
}
static struct dentry *bfs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct inode *inode = NULL;
struct buffer_head *bh;

36
fs/block_dev.c
View File

@ -1710,3 +1710,39 @@ int __invalidate_device(struct block_device *bdev, bool kill_dirty)
return res;
}
EXPORT_SYMBOL(__invalidate_device);
void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg)
{
struct inode *inode, *old_inode = NULL;
spin_lock(&inode_sb_list_lock);
list_for_each_entry(inode, &blockdev_superblock->s_inodes, i_sb_list) {
struct address_space *mapping = inode->i_mapping;
spin_lock(&inode->i_lock);
if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW) ||
mapping->nrpages == 0) {
spin_unlock(&inode->i_lock);
continue;
}
__iget(inode);
spin_unlock(&inode->i_lock);
spin_unlock(&inode_sb_list_lock);
/*
* We hold a reference to 'inode' so it couldn't have been
* removed from s_inodes list while we dropped the
* inode_sb_list_lock. We cannot iput the inode now as we can
* be holding the last reference and we cannot iput it under
* inode_sb_list_lock. So we keep the reference and iput it
* later.
*/
iput(old_inode);
old_inode = inode;
func(I_BDEV(inode), arg);
spin_lock(&inode_sb_list_lock);
}
spin_unlock(&inode_sb_list_lock);
iput(old_inode);
}

6
fs/btrfs/inode.c
View File

@ -4247,7 +4247,7 @@ static void btrfs_dentry_release(struct dentry *dentry)
}
static struct dentry *btrfs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct dentry *ret;
@ -4893,7 +4893,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
}
static int btrfs_create(struct inode *dir, struct dentry *dentry,
umode_t mode, struct nameidata *nd)
umode_t mode, bool excl)
{
struct btrfs_trans_handle *trans;
struct btrfs_root *root = BTRFS_I(dir)->root;
@ -6987,7 +6987,7 @@ void btrfs_destroy_inode(struct inode *inode)
struct btrfs_ordered_extent *ordered;
struct btrfs_root *root = BTRFS_I(inode)->root;
WARN_ON(!list_empty(&inode->i_dentry));
WARN_ON(!hlist_empty(&inode->i_dentry));
WARN_ON(inode->i_data.nrpages);
WARN_ON(BTRFS_I(inode)->outstanding_extents);
WARN_ON(BTRFS_I(inode)->reserved_extents);

4
fs/btrfs/ioctl.c
View File

@ -3268,7 +3268,7 @@ static long btrfs_ioctl_balance(struct file *file, void __user *arg)
if (fs_info->sb->s_flags & MS_RDONLY)
return -EROFS;
ret = mnt_want_write(file->f_path.mnt);
ret = mnt_want_write_file(file);
if (ret)
return ret;
@ -3338,7 +3338,7 @@ static long btrfs_ioctl_balance(struct file *file, void __user *arg)
out:
mutex_unlock(&fs_info->balance_mutex);
mutex_unlock(&fs_info->volume_mutex);
mnt_drop_write(file->f_path.mnt);
mnt_drop_write_file(file);
return ret;
}

4
fs/btrfs/super.c
View File

@ -1068,7 +1068,8 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
}
bdev = fs_devices->latest_bdev;
s = sget(fs_type, btrfs_test_super, btrfs_set_super, fs_info);
s = sget(fs_type, btrfs_test_super, btrfs_set_super, flags | MS_NOSEC,
fs_info);
if (IS_ERR(s)) {
error = PTR_ERR(s);
goto error_close_devices;
@ -1082,7 +1083,6 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
} else {
char b[BDEVNAME_SIZE];
s->s_flags = flags | MS_NOSEC;
strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
btrfs_sb(s)->bdev_holder = fs_type;
error = btrfs_fill_super(s, fs_devices, data,

2
fs/cachefiles/namei.c
View File

@ -567,7 +567,7 @@ int cachefiles_walk_to_object(struct cachefiles_object *parent,
if (ret < 0)
goto create_error;
start = jiffies;
ret = vfs_create(dir->d_inode, next, S_IFREG, NULL);
ret = vfs_create(dir->d_inode, next, S_IFREG, true);
cachefiles_hist(cachefiles_create_histogram, start);
if (ret < 0)
goto create_error;

8
fs/cachefiles/rdwr.c
View File

@ -891,6 +891,7 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page)
struct cachefiles_cache *cache;
mm_segment_t old_fs;
struct file *file;
struct path path;
loff_t pos, eof;
size_t len;
void *data;
@ -916,10 +917,9 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page)
/* write the page to the backing filesystem and let it store it in its
* own time */
dget(object->backer);
mntget(cache->mnt);
file = dentry_open(object->backer, cache->mnt, O_RDWR,
cache->cache_cred);
path.mnt = cache->mnt;
path.dentry = object->backer;
file = dentry_open(&path, O_RDWR, cache->cache_cred);
if (IS_ERR(file)) {
ret = PTR_ERR(file);
} else {

77
fs/ceph/dir.c
View File

@ -576,7 +576,7 @@ static int is_root_ceph_dentry(struct inode *inode, struct dentry *dentry)
* the MDS so that it gets our 'caps wanted' value in a single op.
*/
static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
@ -594,14 +594,6 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
if (err < 0)
return ERR_PTR(err);
/* open (but not create!) intent? */
if (nd &&
(nd->flags & LOOKUP_OPEN) &&
!(nd->intent.open.flags & O_CREAT)) {
int mode = nd->intent.open.create_mode & ~current->fs->umask;
return ceph_lookup_open(dir, dentry, nd, mode, 1);
}
/* can we conclude ENOENT locally? */
if (dentry->d_inode == NULL) {
struct ceph_inode_info *ci = ceph_inode(dir);
@ -642,13 +634,51 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
return dentry;
}
int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned flags, umode_t mode,
int *opened)
{
int err;
struct dentry *res = NULL;
if (!(flags & O_CREAT)) {
if (dentry->d_name.len > NAME_MAX)
return -ENAMETOOLONG;
err = ceph_init_dentry(dentry);
if (err < 0)
return err;
return ceph_lookup_open(dir, dentry, file, flags, mode, opened);
}
if (d_unhashed(dentry)) {
res = ceph_lookup(dir, dentry, 0);
if (IS_ERR(res))
return PTR_ERR(res);
if (res)
dentry = res;
}
/* We don't deal with positive dentries here */
if (dentry->d_inode)
return finish_no_open(file, res);
*opened |= FILE_CREATED;
err = ceph_lookup_open(dir, dentry, file, flags, mode, opened);
dput(res);
return err;
}
/*
* If we do a create but get no trace back from the MDS, follow up with
* a lookup (the VFS expects us to link up the provided dentry).
*/
int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry)
{
struct dentry *result = ceph_lookup(dir, dentry, NULL);
struct dentry *result = ceph_lookup(dir, dentry, 0);
if (result && !IS_ERR(result)) {
/*
@ -700,25 +730,9 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry,
}
static int ceph_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
dout("create in dir %p dentry %p name '%.*s'\n",
dir, dentry, dentry->d_name.len, dentry->d_name.name);
if (ceph_snap(dir) != CEPH_NOSNAP)
return -EROFS;
if (nd) {
BUG_ON((nd->flags & LOOKUP_OPEN) == 0);
dentry = ceph_lookup_open(dir, dentry, nd, mode, 0);
/* hrm, what should i do here if we get aliased? */
if (IS_ERR(dentry))
return PTR_ERR(dentry);
return 0;
}
/* fall back to mknod */
return ceph_mknod(dir, dentry, (mode & ~S_IFMT) | S_IFREG, 0);
return ceph_mknod(dir, dentry, mode, 0);
}
static int ceph_symlink(struct inode *dir, struct dentry *dentry,
@ -1028,12 +1042,12 @@ static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry)
/*
* Check if cached dentry can be trusted.
*/
static int ceph_d_revalidate(struct dentry *dentry, struct nameidata *nd)
static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
{
int valid = 0;
struct inode *dir;
if (nd && nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
dout("d_revalidate %p '%.*s' inode %p offset %lld\n", dentry,
@ -1080,7 +1094,7 @@ static void ceph_d_release(struct dentry *dentry)
}
static int ceph_snapdir_d_revalidate(struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
/*
* Eventually, we'll want to revalidate snapped metadata
@ -1357,6 +1371,7 @@ const struct inode_operations ceph_dir_iops = {
.rmdir = ceph_unlink,
.rename = ceph_rename,
.create = ceph_create,
.atomic_open = ceph_atomic_open,
};
const struct dentry_operations ceph_dentry_ops = {

26
fs/ceph/file.c
View File

@ -213,22 +213,15 @@ int ceph_open(struct inode *inode, struct file *file)
* may_open() fails, the struct *file gets cleaned up (i.e.
* ceph_release gets called). So fear not!
*/
/*
* flags
* path_lookup_open -> LOOKUP_OPEN
* path_lookup_create -> LOOKUP_OPEN|LOOKUP_CREATE
*/
struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
struct nameidata *nd, int mode,
int locked_dir)
int ceph_lookup_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned flags, umode_t mode,
int *opened)
{
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct file *file;
struct ceph_mds_request *req;
struct dentry *ret;
int err;
int flags = nd->intent.open.flags;
dout("ceph_lookup_open dentry %p '%.*s' flags %d mode 0%o\n",
dentry, dentry->d_name.len, dentry->d_name.name, flags, mode);
@ -236,7 +229,7 @@ struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
/* do the open */
req = prepare_open_request(dir->i_sb, flags, mode);
if (IS_ERR(req))
return ERR_CAST(req);
return PTR_ERR(req);
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
if (flags & O_CREAT) {
@ -254,14 +247,17 @@ struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
err = ceph_handle_notrace_create(dir, dentry);
if (err)
goto out;
file = lookup_instantiate_filp(nd, req->r_dentry, ceph_open);
if (IS_ERR(file))
err = PTR_ERR(file);
err = finish_open(file, req->r_dentry, ceph_open, opened);
out:
ret = ceph_finish_lookup(req, dentry, err);
ceph_mdsc_put_request(req);
dout("ceph_lookup_open result=%p\n", ret);
return ret;
if (IS_ERR(ret))
return PTR_ERR(ret);
dput(ret);
return err;
}
int ceph_release(struct inode *inode, struct file *file)

2
fs/ceph/super.c
View File

@ -871,7 +871,7 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type,
if (ceph_test_opt(fsc->client, NOSHARE))
compare_super = NULL;
sb = sget(fs_type, compare_super, ceph_set_super, fsc);
sb = sget(fs_type, compare_super, ceph_set_super, flags, fsc);
if (IS_ERR(sb)) {
res = ERR_CAST(sb);
goto out;

6
fs/ceph/super.h
View File

@ -806,9 +806,9 @@ extern int ceph_copy_from_page_vector(struct page **pages,
loff_t off, size_t len);
extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
extern int ceph_open(struct inode *inode, struct file *file);
extern struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
struct nameidata *nd, int mode,
int locked_dir);
extern int ceph_lookup_open(struct inode *dir, struct dentry *dentry,
struct file *od, unsigned flags,
umode_t mode, int *opened);
extern int ceph_release(struct inode *inode, struct file *filp);
/* dir.c */

11
fs/cifs/cifsfs.c
View File

@ -257,7 +257,6 @@ cifs_alloc_inode(struct super_block *sb)
static void cifs_i_callback(struct rcu_head *head)
{
struct inode *inode = container_of(head, struct inode, i_rcu);
INIT_LIST_HEAD(&inode->i_dentry);
kmem_cache_free(cifs_inode_cachep, CIFS_I(inode));
}
@ -638,7 +637,10 @@ cifs_do_mount(struct file_system_type *fs_type,
mnt_data.cifs_sb = cifs_sb;
mnt_data.flags = flags;
sb = sget(fs_type, cifs_match_super, cifs_set_super, &mnt_data);
/* BB should we make this contingent on mount parm? */
flags |= MS_NODIRATIME | MS_NOATIME;
sb = sget(fs_type, cifs_match_super, cifs_set_super, flags, &mnt_data);
if (IS_ERR(sb)) {
root = ERR_CAST(sb);
cifs_umount(cifs_sb);
@ -649,10 +651,6 @@ cifs_do_mount(struct file_system_type *fs_type,
cFYI(1, "Use existing superblock");
cifs_umount(cifs_sb);
} else {
sb->s_flags = flags;
/* BB should we make this contingent on mount parm? */
sb->s_flags |= MS_NODIRATIME | MS_NOATIME;
rc = cifs_read_super(sb);
if (rc) {
root = ERR_PTR(rc);
@ -778,6 +776,7 @@ struct file_system_type cifs_fs_type = {
};
const struct inode_operations cifs_dir_inode_ops = {
.create = cifs_create,
.atomic_open = cifs_atomic_open,
.lookup = cifs_lookup,
.getattr = cifs_getattr,
.unlink = cifs_unlink,

7
fs/cifs/cifsfs.h
View File

@ -45,9 +45,12 @@ extern const struct address_space_operations cifs_addr_ops_smallbuf;
extern const struct inode_operations cifs_dir_inode_ops;
extern struct inode *cifs_root_iget(struct super_block *);
extern int cifs_create(struct inode *, struct dentry *, umode_t,
struct nameidata *);
bool excl);
extern int cifs_atomic_open(struct inode *, struct dentry *,
struct file *, unsigned, umode_t,
int *);
extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
struct nameidata *);
unsigned int);
extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);

450
fs/cifs/dir.c
View File

@ -133,100 +133,133 @@ build_path_from_dentry(struct dentry *direntry)
return full_path;
}
/*
* Don't allow the separator character in a path component.
* The VFS will not allow "/", but "\" is allowed by posix.
*/
static int
check_name(struct dentry *direntry)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
int i;
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) {
for (i = 0; i < direntry->d_name.len; i++) {
if (direntry->d_name.name[i] == '\\') {
cFYI(1, "Invalid file name");
return -EINVAL;
}
}
}
return 0;
}
/* Inode operations in similar order to how they appear in Linux file fs.h */
int
cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
struct nameidata *nd)
static int cifs_do_create(struct inode *inode, struct dentry *direntry,
int xid, struct tcon_link *tlink, unsigned oflags,
umode_t mode, __u32 *oplock, __u16 *fileHandle,
int *created)
{
int rc = -ENOENT;
int xid;
int create_options = CREATE_NOT_DIR;
__u32 oplock = 0;
int oflags;
/*
* BB below access is probably too much for mknod to request
* but we have to do query and setpathinfo so requesting
* less could fail (unless we want to request getatr and setatr
* permissions (only). At least for POSIX we do not have to
* request so much.
*/
int desiredAccess = GENERIC_READ | GENERIC_WRITE;
__u16 fileHandle;
struct cifs_sb_info *cifs_sb;
struct tcon_link *tlink;
struct cifs_tcon *tcon;
int desiredAccess;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifs_tcon *tcon = tlink_tcon(tlink);
char *full_path = NULL;
FILE_ALL_INFO *buf = NULL;
struct inode *newinode = NULL;
int disposition = FILE_OVERWRITE_IF;
xid = GetXid();
cifs_sb = CIFS_SB(inode->i_sb);
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink)) {
FreeXid(xid);
return PTR_ERR(tlink);
}
tcon = tlink_tcon(tlink);
int disposition;
*oplock = 0;
if (tcon->ses->server->oplocks)
oplock = REQ_OPLOCK;
if (nd)
oflags = nd->intent.open.file->f_flags;
else
oflags = O_RDONLY | O_CREAT;
*oplock = REQ_OPLOCK;
full_path = build_path_from_dentry(direntry);
if (full_path == NULL) {
rc = -ENOMEM;
goto cifs_create_out;
goto out;
}
if (tcon->unix_ext && (tcon->ses->capabilities & CAP_UNIX) &&
!tcon->broken_posix_open &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
rc = cifs_posix_open(full_path, &newinode,
inode->i_sb, mode, oflags, &oplock, &fileHandle, xid);
/* EIO could indicate that (posix open) operation is not
supported, despite what server claimed in capability
negotiation. EREMOTE indicates DFS junction, which is not
handled in posix open */
if (rc == 0) {
if (newinode == NULL) /* query inode info */
inode->i_sb, mode, oflags, oplock, fileHandle, xid);
switch (rc) {
case 0:
if (newinode == NULL) {
/* query inode info */
goto cifs_create_get_file_info;
else /* success, no need to query */
goto cifs_create_set_dentry;
} else if ((rc != -EIO) && (rc != -EREMOTE) &&
(rc != -EOPNOTSUPP) && (rc != -EINVAL))
goto cifs_create_out;
/* else fallthrough to retry, using older open call, this is
case where server does not support this SMB level, and
falsely claims capability (also get here for DFS case
which should be rare for path not covered on files) */
}
if (!S_ISREG(newinode->i_mode)) {
/*
* The server may allow us to open things like
* FIFOs, but the client isn't set up to deal
* with that. If it's not a regular file, just
* close it and proceed as if it were a normal
* lookup.
*/
CIFSSMBClose(xid, tcon, *fileHandle);
goto cifs_create_get_file_info;
}
/* success, no need to query */
goto cifs_create_set_dentry;
case -ENOENT:
goto cifs_create_get_file_info;
case -EIO:
case -EINVAL:
/*
* EIO could indicate that (posix open) operation is not
* supported, despite what server claimed in capability
* negotiation.
*
* POSIX open in samba versions 3.3.1 and earlier could
* incorrectly fail with invalid parameter.
*/
tcon->broken_posix_open = true;
break;
case -EREMOTE:
case -EOPNOTSUPP:
/*
* EREMOTE indicates DFS junction, which is not handled
* in posix open. If either that or op not supported
* returned, follow the normal lookup.
*/
break;
default:
goto out;
}
/*
* fallthrough to retry, using older open call, this is case
* where server does not support this SMB level, and falsely
* claims capability (also get here for DFS case which should be
* rare for path not covered on files)
*/
}
if (nd) {
/* if the file is going to stay open, then we
need to set the desired access properly */
desiredAccess = 0;
if (OPEN_FMODE(oflags) & FMODE_READ)
desiredAccess |= GENERIC_READ; /* is this too little? */
if (OPEN_FMODE(oflags) & FMODE_WRITE)
desiredAccess |= GENERIC_WRITE;
desiredAccess = 0;
if (OPEN_FMODE(oflags) & FMODE_READ)
desiredAccess |= GENERIC_READ; /* is this too little? */
if (OPEN_FMODE(oflags) & FMODE_WRITE)
desiredAccess |= GENERIC_WRITE;
if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
disposition = FILE_CREATE;
else if ((oflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC))
disposition = FILE_OVERWRITE_IF;
else if ((oflags & O_CREAT) == O_CREAT)
disposition = FILE_OPEN_IF;
else
cFYI(1, "Create flag not set in create function");
}
disposition = FILE_OVERWRITE_IF;
if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
disposition = FILE_CREATE;
else if ((oflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC))
disposition = FILE_OVERWRITE_IF;
else if ((oflags & O_CREAT) == O_CREAT)
disposition = FILE_OPEN_IF;
else
cFYI(1, "Create flag not set in create function");
/* BB add processing to set equivalent of mode - e.g. via CreateX with
ACLs */
@ -234,7 +267,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
if (buf == NULL) {
rc = -ENOMEM;
goto cifs_create_out;
goto out;
}
/*
@ -250,7 +283,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
if (tcon->ses->capabilities & CAP_NT_SMBS)
rc = CIFSSMBOpen(xid, tcon, full_path, disposition,
desiredAccess, create_options,
&fileHandle, &oplock, buf, cifs_sb->local_nls,
fileHandle, oplock, buf, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
else
rc = -EIO; /* no NT SMB support fall into legacy open below */
@ -259,17 +292,17 @@ cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
/* old server, retry the open legacy style */
rc = SMBLegacyOpen(xid, tcon, full_path, disposition,
desiredAccess, create_options,
&fileHandle, &oplock, buf, cifs_sb->local_nls,
fileHandle, oplock, buf, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
}
if (rc) {
cFYI(1, "cifs_create returned 0x%x", rc);
goto cifs_create_out;
goto out;
}
/* If Open reported that we actually created a file
then we now have to set the mode if possible */
if ((tcon->unix_ext) && (oplock & CIFS_CREATE_ACTION)) {
if ((tcon->unix_ext) && (*oplock & CIFS_CREATE_ACTION)) {
struct cifs_unix_set_info_args args = {
.mode = mode,
.ctime = NO_CHANGE_64,
@ -278,6 +311,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
.device = 0,
};
*created |= FILE_CREATED;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
args.uid = (__u64) current_fsuid();
if (inode->i_mode & S_ISGID)
@ -288,7 +322,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
}
CIFSSMBUnixSetFileInfo(xid, tcon, &args, fileHandle,
CIFSSMBUnixSetFileInfo(xid, tcon, &args, *fileHandle,
current->tgid);
} else {
/* BB implement mode setting via Windows security
@ -305,11 +339,11 @@ cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
inode->i_sb, xid);
else {
rc = cifs_get_inode_info(&newinode, full_path, buf,
inode->i_sb, xid, &fileHandle);
inode->i_sb, xid, fileHandle);
if (newinode) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
newinode->i_mode = mode;
if ((oplock & CIFS_CREATE_ACTION) &&
if ((*oplock & CIFS_CREATE_ACTION) &&
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) {
newinode->i_uid = current_fsuid();
if (inode->i_mode & S_ISGID)
@ -321,40 +355,139 @@ cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
}
cifs_create_set_dentry:
if (rc == 0)
d_instantiate(direntry, newinode);
else
if (rc != 0) {
cFYI(1, "Create worked, get_inode_info failed rc = %d", rc);
if (newinode && nd) {
struct cifsFileInfo *pfile_info;
struct file *filp;
filp = lookup_instantiate_filp(nd, direntry, generic_file_open);
if (IS_ERR(filp)) {
rc = PTR_ERR(filp);
CIFSSMBClose(xid, tcon, fileHandle);
goto cifs_create_out;
}
pfile_info = cifs_new_fileinfo(fileHandle, filp, tlink, oplock);
if (pfile_info == NULL) {
fput(filp);
CIFSSMBClose(xid, tcon, fileHandle);
rc = -ENOMEM;
}
} else {
CIFSSMBClose(xid, tcon, fileHandle);
goto out;
}
d_drop(direntry);
d_add(direntry, newinode);
cifs_create_out:
/* ENOENT for create? How weird... */
rc = -ENOENT;
if (!newinode) {
CIFSSMBClose(xid, tcon, *fileHandle);
goto out;
}
rc = 0;
out:
kfree(buf);
kfree(full_path);
return rc;
}
int
cifs_atomic_open(struct inode *inode, struct dentry *direntry,
struct file *file, unsigned oflags, umode_t mode,
int *opened)
{
int rc;
int xid;
struct tcon_link *tlink;
struct cifs_tcon *tcon;
__u16 fileHandle;
__u32 oplock;
struct file *filp;
struct cifsFileInfo *pfile_info;
/* Posix open is only called (at lookup time) for file create now. For
* opens (rather than creates), because we do not know if it is a file
* or directory yet, and current Samba no longer allows us to do posix
* open on dirs, we could end up wasting an open call on what turns out
* to be a dir. For file opens, we wait to call posix open till
* cifs_open. It could be added to atomic_open in the future but the
* performance tradeoff of the extra network request when EISDIR or
* EACCES is returned would have to be weighed against the 50% reduction
* in network traffic in the other paths.
*/
if (!(oflags & O_CREAT)) {
struct dentry *res = cifs_lookup(inode, direntry, 0);
if (IS_ERR(res))
return PTR_ERR(res);
return finish_no_open(file, res);
}
rc = check_name(direntry);
if (rc)
return rc;
xid = GetXid();
cFYI(1, "parent inode = 0x%p name is: %s and dentry = 0x%p",
inode, direntry->d_name.name, direntry);
tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
filp = ERR_CAST(tlink);
if (IS_ERR(tlink))
goto free_xid;
tcon = tlink_tcon(tlink);
rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
&oplock, &fileHandle, opened);
if (rc)
goto out;
rc = finish_open(file, direntry, generic_file_open, opened);
if (rc) {
CIFSSMBClose(xid, tcon, fileHandle);
goto out;
}
pfile_info = cifs_new_fileinfo(fileHandle, filp, tlink, oplock);
if (pfile_info == NULL) {
CIFSSMBClose(xid, tcon, fileHandle);
fput(filp);
rc = -ENOMEM;
}
out:
cifs_put_tlink(tlink);
free_xid:
FreeXid(xid);
return rc;
}
int cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
bool excl)
{
int rc;
int xid = GetXid();
/*
* BB below access is probably too much for mknod to request
* but we have to do query and setpathinfo so requesting
* less could fail (unless we want to request getatr and setatr
* permissions (only). At least for POSIX we do not have to
* request so much.
*/
unsigned oflags = O_EXCL | O_CREAT | O_RDWR;
struct tcon_link *tlink;
__u16 fileHandle;
__u32 oplock;
int created = FILE_CREATED;
cFYI(1, "cifs_create parent inode = 0x%p name is: %s and dentry = 0x%p",
inode, direntry->d_name.name, direntry);
tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
rc = PTR_ERR(tlink);
if (IS_ERR(tlink))
goto free_xid;
rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
&oplock, &fileHandle, &created);
if (!rc)
CIFSSMBClose(xid, tlink_tcon(tlink), fileHandle);
cifs_put_tlink(tlink);
free_xid:
FreeXid(xid);
return rc;
}
int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
dev_t device_number)
{
@ -488,20 +621,15 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
struct dentry *
cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
struct nameidata *nd)
unsigned int flags)
{
int xid;
int rc = 0; /* to get around spurious gcc warning, set to zero here */
__u32 oplock;
__u16 fileHandle = 0;
bool posix_open = false;
struct cifs_sb_info *cifs_sb;
struct tcon_link *tlink;
struct cifs_tcon *pTcon;
struct cifsFileInfo *cfile;
struct inode *newInode = NULL;
char *full_path = NULL;
struct file *filp;
xid = GetXid();
@ -518,31 +646,9 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
}
pTcon = tlink_tcon(tlink);
oplock = pTcon->ses->server->oplocks ? REQ_OPLOCK : 0;
/*
* Don't allow the separator character in a path component.
* The VFS will not allow "/", but "\" is allowed by posix.
*/
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) {
int i;
for (i = 0; i < direntry->d_name.len; i++)
if (direntry->d_name.name[i] == '\\') {
cFYI(1, "Invalid file name");
rc = -EINVAL;
goto lookup_out;
}
}
/*
* O_EXCL: optimize away the lookup, but don't hash the dentry. Let
* the VFS handle the create.
*/
if (nd && (nd->flags & LOOKUP_EXCL)) {
d_instantiate(direntry, NULL);
rc = 0;
rc = check_name(direntry);
if (rc)
goto lookup_out;
}
/* can not grab the rename sem here since it would
deadlock in the cases (beginning of sys_rename itself)
@ -560,80 +666,16 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
}
cFYI(1, "Full path: %s inode = 0x%p", full_path, direntry->d_inode);
/* Posix open is only called (at lookup time) for file create now.
* For opens (rather than creates), because we do not know if it
* is a file or directory yet, and current Samba no longer allows
* us to do posix open on dirs, we could end up wasting an open call
* on what turns out to be a dir. For file opens, we wait to call posix
* open till cifs_open. It could be added here (lookup) in the future
* but the performance tradeoff of the extra network request when EISDIR
* or EACCES is returned would have to be weighed against the 50%
* reduction in network traffic in the other paths.
*/
if (pTcon->unix_ext) {
if (nd && !(nd->flags & LOOKUP_DIRECTORY) &&
(nd->flags & LOOKUP_OPEN) && !pTcon->broken_posix_open &&
(nd->intent.open.file->f_flags & O_CREAT)) {
rc = cifs_posix_open(full_path, &newInode,
parent_dir_inode->i_sb,
nd->intent.open.create_mode,
nd->intent.open.file->f_flags, &oplock,
&fileHandle, xid);
/*
* The check below works around a bug in POSIX
* open in samba versions 3.3.1 and earlier where
* open could incorrectly fail with invalid parameter.
* If either that or op not supported returned, follow
* the normal lookup.
*/
switch (rc) {
case 0:
/*
* The server may allow us to open things like
* FIFOs, but the client isn't set up to deal
* with that. If it's not a regular file, just
* close it and proceed as if it were a normal
* lookup.
*/
if (newInode && !S_ISREG(newInode->i_mode)) {
CIFSSMBClose(xid, pTcon, fileHandle);
break;
}
case -ENOENT:
posix_open = true;
case -EOPNOTSUPP:
break;
default:
pTcon->broken_posix_open = true;
}
}
if (!posix_open)
rc = cifs_get_inode_info_unix(&newInode, full_path,
parent_dir_inode->i_sb, xid);
} else
rc = cifs_get_inode_info_unix(&newInode, full_path,
parent_dir_inode->i_sb, xid);
} else {
rc = cifs_get_inode_info(&newInode, full_path, NULL,
parent_dir_inode->i_sb, xid, NULL);
}
if ((rc == 0) && (newInode != NULL)) {
d_add(direntry, newInode);
if (posix_open) {
filp = lookup_instantiate_filp(nd, direntry,
generic_file_open);
if (IS_ERR(filp)) {
rc = PTR_ERR(filp);
CIFSSMBClose(xid, pTcon, fileHandle);
goto lookup_out;
}
cfile = cifs_new_fileinfo(fileHandle, filp, tlink,
oplock);
if (cfile == NULL) {
fput(filp);
CIFSSMBClose(xid, pTcon, fileHandle);
rc = -ENOMEM;
goto lookup_out;
}
}
/* since paths are not looked up by component - the parent
directories are presumed to be good here */
renew_parental_timestamps(direntry);
@ -658,9 +700,9 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
}
static int
cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
cifs_d_revalidate(struct dentry *direntry, unsigned int flags)
{
if (nd && (nd->flags & LOOKUP_RCU))
if (flags & LOOKUP_RCU)
return -ECHILD;
if (direntry->d_inode) {
@ -689,7 +731,7 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
* This may be nfsd (or something), anyway, we can't see the
* intent of this. So, since this can be for creation, drop it.
*/
if (!nd)
if (!flags)
return 0;
/*
@ -697,7 +739,7 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
* case sensitive name which is specified by user if this is
* for creation.
*/
if (nd->flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
return 0;
if (time_after(jiffies, direntry->d_time + HZ) || !lookupCacheEnabled)

5
fs/cifs/inode.c
View File

@ -800,7 +800,7 @@ cifs_find_inode(struct inode *inode, void *opaque)
return 0;
/* if it's not a directory or has no dentries, then flag it */
if (S_ISDIR(inode->i_mode) && !list_empty(&inode->i_dentry))
if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry))
fattr->cf_flags |= CIFS_FATTR_INO_COLLISION;
return 1;
@ -825,9 +825,10 @@ static bool
inode_has_hashed_dentries(struct inode *inode)
{
struct dentry *dentry;
struct hlist_node *p;
spin_lock(&inode->i_lock);
list_for_each_entry(dentry, &inode->i_dentry, d_alias) {
hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) {
if (!d_unhashed(dentry) || IS_ROOT(dentry)) {
spin_unlock(&inode->i_lock);
return true;

10
fs/coda/cache.c
View File

@ -89,17 +89,13 @@ int coda_cache_check(struct inode *inode, int mask)
/* this won't do any harm: just flag all children */
static void coda_flag_children(struct dentry *parent, int flag)
{
struct list_head *child;
struct dentry *de;
spin_lock(&parent->d_lock);
list_for_each(child, &parent->d_subdirs)
{
de = list_entry(child, struct dentry, d_u.d_child);
list_for_each_entry(de, &parent->d_subdirs, d_u.d_child) {
/* don't know what to do with negative dentries */
if ( ! de->d_inode )
continue;
coda_flag_inode(de->d_inode, flag);
if (de->d_inode )
coda_flag_inode(de->d_inode, flag);
}
spin_unlock(&parent->d_lock);
return;

14
fs/coda/dir.c
View File

@ -30,8 +30,8 @@
#include "coda_int.h"
/* dir inode-ops */
static int coda_create(struct inode *dir, struct dentry *new, umode_t mode, struct nameidata *nd);
static struct dentry *coda_lookup(struct inode *dir, struct dentry *target, struct nameidata *nd);
static int coda_create(struct inode *dir, struct dentry *new, umode_t mode, bool excl);
static struct dentry *coda_lookup(struct inode *dir, struct dentry *target, unsigned int flags);
static int coda_link(struct dentry *old_dentry, struct inode *dir_inode,
struct dentry *entry);
static int coda_unlink(struct inode *dir_inode, struct dentry *entry);
@ -46,7 +46,7 @@ static int coda_rename(struct inode *old_inode, struct dentry *old_dentry,
static int coda_readdir(struct file *file, void *buf, filldir_t filldir);
/* dentry ops */
static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd);
static int coda_dentry_revalidate(struct dentry *de, unsigned int flags);
static int coda_dentry_delete(const struct dentry *);
/* support routines */
@ -94,7 +94,7 @@ const struct file_operations coda_dir_operations = {
/* inode operations for directories */
/* access routines: lookup, readlink, permission */
static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struct nameidata *nd)
static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, unsigned int flags)
{
struct super_block *sb = dir->i_sb;
const char *name = entry->d_name.name;
@ -188,7 +188,7 @@ static inline void coda_dir_drop_nlink(struct inode *dir)
}
/* creation routines: create, mknod, mkdir, link, symlink */
static int coda_create(struct inode *dir, struct dentry *de, umode_t mode, struct nameidata *nd)
static int coda_create(struct inode *dir, struct dentry *de, umode_t mode, bool excl)
{
int error;
const char *name=de->d_name.name;
@ -536,12 +536,12 @@ static int coda_venus_readdir(struct file *coda_file, void *buf,
}
/* called when a cache lookup succeeds */
static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd)
static int coda_dentry_revalidate(struct dentry *de, unsigned int flags)
{
struct inode *inode;
struct coda_inode_info *cii;
if (nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
inode = de->d_inode;

2
fs/configfs/dir.c
View File

@ -442,7 +442,7 @@ static int configfs_attach_attr(struct configfs_dirent * sd, struct dentry * den
static struct dentry * configfs_lookup(struct inode *dir,
struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct configfs_dirent * parent_sd = dentry->d_parent->d_fsdata;
struct configfs_dirent * sd;

2
fs/cramfs/inode.c
View File

@ -417,7 +417,7 @@ static int cramfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
/*
* Lookup and fill in the inode data..
*/
static struct dentry * cramfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
static struct dentry * cramfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
unsigned int offset = 0;
struct inode *inode = NULL;

44
fs/dcache.c
View File

@ -218,7 +218,7 @@ static void __d_free(struct rcu_head *head)
{
struct dentry *dentry = container_of(head, struct dentry, d_u.d_rcu);
WARN_ON(!list_empty(&dentry->d_alias));
WARN_ON(!hlist_unhashed(&dentry->d_alias));
if (dname_external(dentry))
kfree(dentry->d_name.name);
kmem_cache_free(dentry_cache, dentry);
@ -267,7 +267,7 @@ static void dentry_iput(struct dentry * dentry)
struct inode *inode = dentry->d_inode;
if (inode) {
dentry->d_inode = NULL;
list_del_init(&dentry->d_alias);
hlist_del_init(&dentry->d_alias);
spin_unlock(&dentry->d_lock);
spin_unlock(&inode->i_lock);
if (!inode->i_nlink)
@ -291,7 +291,7 @@ static void dentry_unlink_inode(struct dentry * dentry)
{
struct inode *inode = dentry->d_inode;
dentry->d_inode = NULL;
list_del_init(&dentry->d_alias);
hlist_del_init(&dentry->d_alias);
dentry_rcuwalk_barrier(dentry);
spin_unlock(&dentry->d_lock);
spin_unlock(&inode->i_lock);
@ -699,10 +699,11 @@ EXPORT_SYMBOL(dget_parent);
static struct dentry *__d_find_alias(struct inode *inode, int want_discon)
{
struct dentry *alias, *discon_alias;
struct hlist_node *p;
again:
discon_alias = NULL;
list_for_each_entry(alias, &inode->i_dentry, d_alias) {
hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
spin_lock(&alias->d_lock);
if (S_ISDIR(inode->i_mode) || !d_unhashed(alias)) {
if (IS_ROOT(alias) &&
@ -737,7 +738,7 @@ struct dentry *d_find_alias(struct inode *inode)
{
struct dentry *de = NULL;
if (!list_empty(&inode->i_dentry)) {
if (!hlist_empty(&inode->i_dentry)) {
spin_lock(&inode->i_lock);
de = __d_find_alias(inode, 0);
spin_unlock(&inode->i_lock);
@ -753,9 +754,10 @@ EXPORT_SYMBOL(d_find_alias);
void d_prune_aliases(struct inode *inode)
{
struct dentry *dentry;
struct hlist_node *p;
restart:
spin_lock(&inode->i_lock);
list_for_each_entry(dentry, &inode->i_dentry, d_alias) {
hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) {
spin_lock(&dentry->d_lock);
if (!dentry->d_count) {
__dget_dlock(dentry);
@ -977,7 +979,7 @@ static void shrink_dcache_for_umount_subtree(struct dentry *dentry)
inode = dentry->d_inode;
if (inode) {
dentry->d_inode = NULL;
list_del_init(&dentry->d_alias);
hlist_del_init(&dentry->d_alias);
if (dentry->d_op && dentry->d_op->d_iput)
dentry->d_op->d_iput(dentry, inode);
else
@ -1312,7 +1314,7 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
INIT_HLIST_BL_NODE(&dentry->d_hash);
INIT_LIST_HEAD(&dentry->d_lru);
INIT_LIST_HEAD(&dentry->d_subdirs);
INIT_LIST_HEAD(&dentry->d_alias);
INIT_HLIST_NODE(&dentry->d_alias);
INIT_LIST_HEAD(&dentry->d_u.d_child);
d_set_d_op(dentry, dentry->d_sb->s_d_op);
@ -1400,7 +1402,7 @@ static void __d_instantiate(struct dentry *dentry, struct inode *inode)
if (inode) {
if (unlikely(IS_AUTOMOUNT(inode)))
dentry->d_flags |= DCACHE_NEED_AUTOMOUNT;
list_add(&dentry->d_alias, &inode->i_dentry);
hlist_add_head(&dentry->d_alias, &inode->i_dentry);
}
dentry->d_inode = inode;
dentry_rcuwalk_barrier(dentry);
@ -1425,7 +1427,7 @@ static void __d_instantiate(struct dentry *dentry, struct inode *inode)
void d_instantiate(struct dentry *entry, struct inode * inode)
{
BUG_ON(!list_empty(&entry->d_alias));
BUG_ON(!hlist_unhashed(&entry->d_alias));
if (inode)
spin_lock(&inode->i_lock);
__d_instantiate(entry, inode);
@ -1458,13 +1460,14 @@ static struct dentry *__d_instantiate_unique(struct dentry *entry,
int len = entry->d_name.len;
const char *name = entry->d_name.name;
unsigned int hash = entry->d_name.hash;
struct hlist_node *p;
if (!inode) {
__d_instantiate(entry, NULL);
return NULL;
}
list_for_each_entry(alias, &inode->i_dentry, d_alias) {
hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
/*
* Don't need alias->d_lock here, because aliases with
* d_parent == entry->d_parent are not subject to name or
@ -1490,7 +1493,7 @@ struct dentry *d_instantiate_unique(struct dentry *entry, struct inode *inode)
{
struct dentry *result;
BUG_ON(!list_empty(&entry->d_alias));
BUG_ON(!hlist_unhashed(&entry->d_alias));
if (inode)
spin_lock(&inode->i_lock);
@ -1531,9 +1534,9 @@ static struct dentry * __d_find_any_alias(struct inode *inode)
{
struct dentry *alias;
if (list_empty(&inode->i_dentry))
if (hlist_empty(&inode->i_dentry))
return NULL;
alias = list_first_entry(&inode->i_dentry, struct dentry, d_alias);
alias = hlist_entry(inode->i_dentry.first, struct dentry, d_alias);
__dget(alias);
return alias;
}
@ -1607,7 +1610,7 @@ struct dentry *d_obtain_alias(struct inode *inode)
spin_lock(&tmp->d_lock);
tmp->d_inode = inode;
tmp->d_flags |= DCACHE_DISCONNECTED;
list_add(&tmp->d_alias, &inode->i_dentry);
hlist_add_head(&tmp->d_alias, &inode->i_dentry);
hlist_bl_lock(&tmp->d_sb->s_anon);
hlist_bl_add_head(&tmp->d_hash, &tmp->d_sb->s_anon);
hlist_bl_unlock(&tmp->d_sb->s_anon);
@ -2384,14 +2387,13 @@ static struct dentry *__d_unalias(struct inode *inode,
struct dentry *dentry, struct dentry *alias)
{
struct mutex *m1 = NULL, *m2 = NULL;
struct dentry *ret;
struct dentry *ret = ERR_PTR(-EBUSY);
/* If alias and dentry share a parent, then no extra locks required */
if (alias->d_parent == dentry->d_parent)
goto out_unalias;
/* See lock_rename() */
ret = ERR_PTR(-EBUSY);
if (!mutex_trylock(&dentry->d_sb->s_vfs_rename_mutex))
goto out_err;
m1 = &dentry->d_sb->s_vfs_rename_mutex;
@ -2399,8 +2401,10 @@ static struct dentry *__d_unalias(struct inode *inode,
goto out_err;
m2 = &alias->d_parent->d_inode->i_mutex;
out_unalias:
__d_move(alias, dentry);
ret = alias;
if (likely(!d_mountpoint(alias))) {
__d_move(alias, dentry);
ret = alias;
}
out_err:
spin_unlock(&inode->i_lock);
if (m2)
@ -2622,7 +2626,7 @@ static int prepend_path(const struct path *path,
if (!slash)
error = prepend(buffer, buflen, "/", 1);
if (!error)
error = real_mount(vfsmnt)->mnt_ns ? 1 : 2;
error = is_mounted(vfsmnt) ? 1 : 2;
goto out;
}

91
fs/debugfs/inode.c
View File

@ -54,13 +54,12 @@ static struct inode *debugfs_get_inode(struct super_block *sb, umode_t mode, dev
break;
case S_IFLNK:
inode->i_op = &debugfs_link_operations;
inode->i_fop = fops;
inode->i_private = data;
break;
case S_IFDIR:
inode->i_op = &simple_dir_inode_operations;
inode->i_fop = fops ? fops : &simple_dir_operations;
inode->i_private = data;
inode->i_fop = &simple_dir_operations;
inode->i_private = NULL;
/* directory inodes start off with i_nlink == 2
* (for "." entry) */
@ -91,13 +90,12 @@ static int debugfs_mknod(struct inode *dir, struct dentry *dentry,
return error;
}
static int debugfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode,
void *data, const struct file_operations *fops)
static int debugfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
int res;
mode = (mode & (S_IRWXUGO | S_ISVTX)) | S_IFDIR;
res = debugfs_mknod(dir, dentry, mode, 0, data, fops);
res = debugfs_mknod(dir, dentry, mode, 0, NULL, NULL);
if (!res) {
inc_nlink(dir);
fsnotify_mkdir(dir, dentry);
@ -106,10 +104,10 @@ static int debugfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode,
}
static int debugfs_link(struct inode *dir, struct dentry *dentry, umode_t mode,
void *data, const struct file_operations *fops)
void *data)
{
mode = (mode & S_IALLUGO) | S_IFLNK;
return debugfs_mknod(dir, dentry, mode, 0, data, fops);
return debugfs_mknod(dir, dentry, mode, 0, data, NULL);
}
static int debugfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
@ -293,13 +291,19 @@ static struct file_system_type debug_fs_type = {
.kill_sb = kill_litter_super,
};
static int debugfs_create_by_name(const char *name, umode_t mode,
struct dentry *parent,
struct dentry **dentry,
void *data,
const struct file_operations *fops)
struct dentry *__create_file(const char *name, umode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops)
{
int error = 0;
struct dentry *dentry = NULL;
int error;
pr_debug("debugfs: creating file '%s'\n",name);
error = simple_pin_fs(&debug_fs_type, &debugfs_mount,
&debugfs_mount_count);
if (error)
goto exit;
/* If the parent is not specified, we create it in the root.
* We need the root dentry to do this, which is in the super
@ -309,30 +313,35 @@ static int debugfs_create_by_name(const char *name, umode_t mode,
if (!parent)
parent = debugfs_mount->mnt_root;
*dentry = NULL;
dentry = NULL;
mutex_lock(&parent->d_inode->i_mutex);
*dentry = lookup_one_len(name, parent, strlen(name));
if (!IS_ERR(*dentry)) {
dentry = lookup_one_len(name, parent, strlen(name));
if (!IS_ERR(dentry)) {
switch (mode & S_IFMT) {
case S_IFDIR:
error = debugfs_mkdir(parent->d_inode, *dentry, mode,
data, fops);
error = debugfs_mkdir(parent->d_inode, dentry, mode);
break;
case S_IFLNK:
error = debugfs_link(parent->d_inode, *dentry, mode,
data, fops);
error = debugfs_link(parent->d_inode, dentry, mode,
data);
break;
default:
error = debugfs_create(parent->d_inode, *dentry, mode,
error = debugfs_create(parent->d_inode, dentry, mode,
data, fops);
break;
}
dput(*dentry);
dput(dentry);
} else
error = PTR_ERR(*dentry);
error = PTR_ERR(dentry);
mutex_unlock(&parent->d_inode->i_mutex);
return error;
if (error) {
dentry = NULL;
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
}
exit:
return dentry;
}
/**
@ -365,25 +374,15 @@ struct dentry *debugfs_create_file(const char *name, umode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops)
{
struct dentry *dentry = NULL;
int error;
pr_debug("debugfs: creating file '%s'\n",name);
error = simple_pin_fs(&debug_fs_type, &debugfs_mount,
&debugfs_mount_count);
if (error)
goto exit;
error = debugfs_create_by_name(name, mode, parent, &dentry,
data, fops);
if (error) {
dentry = NULL;
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
goto exit;
switch (mode & S_IFMT) {
case S_IFREG:
case 0:
break;
default:
BUG();
}
exit:
return dentry;
return __create_file(name, mode, parent, data, fops);
}
EXPORT_SYMBOL_GPL(debugfs_create_file);
@ -407,8 +406,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_file);
*/
struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)
{
return debugfs_create_file(name,
S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
return __create_file(name, S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
parent, NULL, NULL);
}
EXPORT_SYMBOL_GPL(debugfs_create_dir);
@ -446,8 +444,7 @@ struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
if (!link)
return NULL;
result = debugfs_create_file(name, S_IFLNK | S_IRWXUGO, parent, link,
NULL);
result = __create_file(name, S_IFLNK | S_IRWXUGO, parent, link, NULL);
if (!result)
kfree(link);
return result;

6
fs/devpts/inode.c
View File

@ -439,15 +439,15 @@ static struct dentry *devpts_mount(struct file_system_type *fs_type,
return ERR_PTR(error);
if (opts.newinstance)
s = sget(fs_type, NULL, set_anon_super, NULL);
s = sget(fs_type, NULL, set_anon_super, flags, NULL);
else
s = sget(fs_type, compare_init_pts_sb, set_anon_super, NULL);
s = sget(fs_type, compare_init_pts_sb, set_anon_super, flags,
NULL);
if (IS_ERR(s))
return ERR_CAST(s);
if (!s->s_root) {
s->s_flags = flags;
error = devpts_fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error)
goto out_undo_sget;

2
fs/direct-io.c
View File

@ -1258,7 +1258,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
*/
BUG_ON(retval == -EIOCBQUEUED);
if (dio->is_async && retval == 0 && dio->result &&
((rw & READ) || (dio->result == sdio.size)))
((rw == READ) || (dio->result == sdio.size)))
retval = -EIOCBQUEUED;
if (retval != -EIOCBQUEUED)

20
fs/ecryptfs/dentry.c
View File

@ -32,7 +32,7 @@
/**
* ecryptfs_d_revalidate - revalidate an ecryptfs dentry
* @dentry: The ecryptfs dentry
* @nd: The associated nameidata
* @flags: lookup flags
*
* Called when the VFS needs to revalidate a dentry. This
* is called whenever a name lookup finds a dentry in the
@ -42,32 +42,20 @@
* Returns 1 if valid, 0 otherwise.
*
*/
static int ecryptfs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
static int ecryptfs_d_revalidate(struct dentry *dentry, unsigned int flags)
{
struct dentry *lower_dentry;
struct vfsmount *lower_mnt;
struct dentry *dentry_save = NULL;
struct vfsmount *vfsmount_save = NULL;
int rc = 1;
if (nd && nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry);
if (!lower_dentry->d_op || !lower_dentry->d_op->d_revalidate)
goto out;
if (nd) {
dentry_save = nd->path.dentry;
vfsmount_save = nd->path.mnt;
nd->path.dentry = lower_dentry;
nd->path.mnt = lower_mnt;
}
rc = lower_dentry->d_op->d_revalidate(lower_dentry, nd);
if (nd) {
nd->path.dentry = dentry_save;
nd->path.mnt = vfsmount_save;
}
rc = lower_dentry->d_op->d_revalidate(lower_dentry, flags);
if (dentry->d_inode) {
struct inode *lower_inode =
ecryptfs_inode_to_lower(dentry->d_inode);

14
fs/ecryptfs/ecryptfs_kernel.h
View File

@ -550,20 +550,6 @@ extern struct kmem_cache *ecryptfs_key_record_cache;
extern struct kmem_cache *ecryptfs_key_sig_cache;
extern struct kmem_cache *ecryptfs_global_auth_tok_cache;
extern struct kmem_cache *ecryptfs_key_tfm_cache;
extern struct kmem_cache *ecryptfs_open_req_cache;
struct ecryptfs_open_req {
#define ECRYPTFS_REQ_PROCESSED 0x00000001
#define ECRYPTFS_REQ_DROPPED 0x00000002
#define ECRYPTFS_REQ_ZOMBIE 0x00000004
u32 flags;
struct file **lower_file;
struct dentry *lower_dentry;
struct vfsmount *lower_mnt;
wait_queue_head_t wait;
struct mutex mux;
struct list_head kthread_ctl_list;
};
struct inode *ecryptfs_get_inode(struct inode *lower_inode,
struct super_block *sb);

9
fs/ecryptfs/inode.c
View File

@ -173,7 +173,7 @@ ecryptfs_do_create(struct inode *directory_inode,
inode = ERR_CAST(lower_dir_dentry);
goto out;
}
rc = vfs_create(lower_dir_dentry->d_inode, lower_dentry, mode, NULL);
rc = vfs_create(lower_dir_dentry->d_inode, lower_dentry, mode, true);
if (rc) {
printk(KERN_ERR "%s: Failure to create dentry in lower fs; "
"rc = [%d]\n", __func__, rc);
@ -240,7 +240,6 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry,
* @dir: The inode of the directory in which to create the file.
* @dentry: The eCryptfs dentry
* @mode: The mode of the new file.
* @nd: nameidata
*
* Creates a new file.
*
@ -248,7 +247,7 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry,
*/
static int
ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry,
umode_t mode, struct nameidata *nd)
umode_t mode, bool excl)
{
struct inode *ecryptfs_inode;
int rc;
@ -270,8 +269,8 @@ ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry,
iput(ecryptfs_inode);
goto out;
}
d_instantiate(ecryptfs_dentry, ecryptfs_inode);
unlock_new_inode(ecryptfs_inode);
d_instantiate(ecryptfs_dentry, ecryptfs_inode);
out:
return rc;
}
@ -374,7 +373,7 @@ static int ecryptfs_lookup_interpose(struct dentry *dentry,
*/
static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
struct dentry *ecryptfs_dentry,
struct nameidata *ecryptfs_nd)
unsigned int flags)
{
char *encrypted_and_encoded_name = NULL;
size_t encrypted_and_encoded_name_size;

73
fs/ecryptfs/kthread.c
View File

@ -27,7 +27,12 @@
#include <linux/mount.h>
#include "ecryptfs_kernel.h"
struct kmem_cache *ecryptfs_open_req_cache;
struct ecryptfs_open_req {
struct file **lower_file;
struct path path;
struct completion done;
struct list_head kthread_ctl_list;
};
static struct ecryptfs_kthread_ctl {
#define ECRYPTFS_KTHREAD_ZOMBIE 0x00000001
@ -67,18 +72,10 @@ static int ecryptfs_threadfn(void *ignored)
req = list_first_entry(&ecryptfs_kthread_ctl.req_list,
struct ecryptfs_open_req,
kthread_ctl_list);
mutex_lock(&req->mux);
list_del(&req->kthread_ctl_list);
if (!(req->flags & ECRYPTFS_REQ_ZOMBIE)) {
dget(req->lower_dentry);
mntget(req->lower_mnt);
(*req->lower_file) = dentry_open(
req->lower_dentry, req->lower_mnt,
(O_RDWR | O_LARGEFILE), current_cred());
req->flags |= ECRYPTFS_REQ_PROCESSED;
}
wake_up(&req->wait);
mutex_unlock(&req->mux);
*req->lower_file = dentry_open(&req->path,
(O_RDWR | O_LARGEFILE), current_cred());
complete(&req->done);
}
mutex_unlock(&ecryptfs_kthread_ctl.mux);
}
@ -111,10 +108,9 @@ void ecryptfs_destroy_kthread(void)
ecryptfs_kthread_ctl.flags |= ECRYPTFS_KTHREAD_ZOMBIE;
list_for_each_entry(req, &ecryptfs_kthread_ctl.req_list,
kthread_ctl_list) {
mutex_lock(&req->mux);
req->flags |= ECRYPTFS_REQ_ZOMBIE;
wake_up(&req->wait);
mutex_unlock(&req->mux);
list_del(&req->kthread_ctl_list);
*req->lower_file = ERR_PTR(-EIO);
complete(&req->done);
}
mutex_unlock(&ecryptfs_kthread_ctl.mux);
kthread_stop(ecryptfs_kthread);
@ -136,34 +132,26 @@ int ecryptfs_privileged_open(struct file **lower_file,
struct vfsmount *lower_mnt,
const struct cred *cred)
{
struct ecryptfs_open_req *req;
struct ecryptfs_open_req req;
int flags = O_LARGEFILE;
int rc = 0;
init_completion(&req.done);
req.lower_file = lower_file;
req.path.dentry = lower_dentry;
req.path.mnt = lower_mnt;
/* Corresponding dput() and mntput() are done when the
* lower file is fput() when all eCryptfs files for the inode are
* released. */
dget(lower_dentry);
mntget(lower_mnt);
flags |= IS_RDONLY(lower_dentry->d_inode) ? O_RDONLY : O_RDWR;
(*lower_file) = dentry_open(lower_dentry, lower_mnt, flags, cred);
(*lower_file) = dentry_open(&req.path, flags, cred);
if (!IS_ERR(*lower_file))
goto out;
if ((flags & O_ACCMODE) == O_RDONLY) {
rc = PTR_ERR((*lower_file));
goto out;
}
req = kmem_cache_alloc(ecryptfs_open_req_cache, GFP_KERNEL);
if (!req) {
rc = -ENOMEM;
goto out;
}
mutex_init(&req->mux);
req->lower_file = lower_file;
req->lower_dentry = lower_dentry;
req->lower_mnt = lower_mnt;
init_waitqueue_head(&req->wait);
req->flags = 0;
mutex_lock(&ecryptfs_kthread_ctl.mux);
if (ecryptfs_kthread_ctl.flags & ECRYPTFS_KTHREAD_ZOMBIE) {
rc = -EIO;
@ -171,27 +159,14 @@ int ecryptfs_privileged_open(struct file **lower_file,
printk(KERN_ERR "%s: We are in the middle of shutting down; "
"aborting privileged request to open lower file\n",
__func__);
goto out_free;
goto out;
}
list_add_tail(&req->kthread_ctl_list, &ecryptfs_kthread_ctl.req_list);
list_add_tail(&req.kthread_ctl_list, &ecryptfs_kthread_ctl.req_list);
mutex_unlock(&ecryptfs_kthread_ctl.mux);
wake_up(&ecryptfs_kthread_ctl.wait);
wait_event(req->wait, (req->flags != 0));
mutex_lock(&req->mux);
BUG_ON(req->flags == 0);
if (req->flags & ECRYPTFS_REQ_DROPPED
|| req->flags & ECRYPTFS_REQ_ZOMBIE) {
rc = -EIO;
printk(KERN_WARNING "%s: Privileged open request dropped\n",
__func__);
goto out_unlock;
}
if (IS_ERR(*req->lower_file))
rc = PTR_ERR(*req->lower_file);
out_unlock:
mutex_unlock(&req->mux);
out_free:
kmem_cache_free(ecryptfs_open_req_cache, req);
wait_for_completion(&req.done);
if (IS_ERR(*lower_file))
rc = PTR_ERR(*lower_file);
out:
return rc;
}

8
fs/ecryptfs/main.c
View File

@ -499,13 +499,12 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
goto out;
}
s = sget(fs_type, NULL, set_anon_super, NULL);
s = sget(fs_type, NULL, set_anon_super, flags, NULL);
if (IS_ERR(s)) {
rc = PTR_ERR(s);
goto out;
}
s->s_flags = flags;
rc = bdi_setup_and_register(&sbi->bdi, "ecryptfs", BDI_CAP_MAP_COPY);
if (rc)
goto out1;
@ -682,11 +681,6 @@ static struct ecryptfs_cache_info {
.name = "ecryptfs_key_tfm_cache",
.size = sizeof(struct ecryptfs_key_tfm),
},
{
.cache = &ecryptfs_open_req_cache,
.name = "ecryptfs_open_req_cache",
.size = sizeof(struct ecryptfs_open_req),
},
};
static void ecryptfs_free_kmem_caches(void)

2
fs/efs/efs.h
View File

@ -129,7 +129,7 @@ extern struct inode *efs_iget(struct super_block *, unsigned long);
extern efs_block_t efs_map_block(struct inode *, efs_block_t);
extern int efs_get_block(struct inode *, sector_t, struct buffer_head *, int);
extern struct dentry *efs_lookup(struct inode *, struct dentry *, struct nameidata *);
extern struct dentry *efs_lookup(struct inode *, struct dentry *, unsigned int);
extern struct dentry *efs_fh_to_dentry(struct super_block *sb, struct fid *fid,
int fh_len, int fh_type);
extern struct dentry *efs_fh_to_parent(struct super_block *sb, struct fid *fid,

3
fs/efs/namei.c
View File

@ -58,7 +58,8 @@ static efs_ino_t efs_find_entry(struct inode *inode, const char *name, int len)
return(0);
}
struct dentry *efs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) {
struct dentry *efs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
efs_ino_t inodenum;
struct inode *inode = NULL;

4
fs/exofs/namei.c
View File

@ -46,7 +46,7 @@ static inline int exofs_add_nondir(struct dentry *dentry, struct inode *inode)
}
static struct dentry *exofs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct inode *inode;
ino_t ino;
@ -60,7 +60,7 @@ static struct dentry *exofs_lookup(struct inode *dir, struct dentry *dentry,
}
static int exofs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
struct inode *inode = exofs_new_inode(dir, mode);
int err = PTR_ERR(inode);

16
fs/exportfs/expfs.c
View File

@ -19,19 +19,19 @@
#define dprintk(fmt, args...) do{}while(0)
static int get_name(struct vfsmount *mnt, struct dentry *dentry, char *name,
struct dentry *child);
static int get_name(const struct path *path, char *name, struct dentry *child);
static int exportfs_get_name(struct vfsmount *mnt, struct dentry *dir,
char *name, struct dentry *child)
{
const struct export_operations *nop = dir->d_sb->s_export_op;
struct path path = {.mnt = mnt, .dentry = dir};
if (nop->get_name)
return nop->get_name(dir, name, child);
else
return get_name(mnt, dir, name, child);
return get_name(&path, name, child);
}
/*
@ -44,13 +44,14 @@ find_acceptable_alias(struct dentry *result,
{
struct dentry *dentry, *toput = NULL;
struct inode *inode;
struct hlist_node *p;
if (acceptable(context, result))
return result;
inode = result->d_inode;
spin_lock(&inode->i_lock);
list_for_each_entry(dentry, &inode->i_dentry, d_alias) {
hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) {
dget(dentry);
spin_unlock(&inode->i_lock);
if (toput)
@ -248,11 +249,10 @@ static int filldir_one(void * __buf, const char * name, int len,
* calls readdir on the parent until it finds an entry with
* the same inode number as the child, and returns that.
*/
static int get_name(struct vfsmount *mnt, struct dentry *dentry,
char *name, struct dentry *child)
static int get_name(const struct path *path, char *name, struct dentry *child)
{
const struct cred *cred = current_cred();
struct inode *dir = dentry->d_inode;
struct inode *dir = path->dentry->d_inode;
int error;
struct file *file;
struct getdents_callback buffer;
@ -266,7 +266,7 @@ static int get_name(struct vfsmount *mnt, struct dentry *dentry,
/*
* Open the directory ...
*/
file = dentry_open(dget(dentry), mntget(mnt), O_RDONLY, cred);
file = dentry_open(path, O_RDONLY, cred);
error = PTR_ERR(file);
if (IS_ERR(file))
goto out;

8
fs/ext2/namei.c
View File

@ -41,8 +41,8 @@ static inline int ext2_add_nondir(struct dentry *dentry, struct inode *inode)
{
int err = ext2_add_link(dentry, inode);
if (!err) {
d_instantiate(dentry, inode);
unlock_new_inode(inode);
d_instantiate(dentry, inode);
return 0;
}
inode_dec_link_count(inode);
@ -55,7 +55,7 @@ static inline int ext2_add_nondir(struct dentry *dentry, struct inode *inode)
* Methods themselves.
*/
static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd)
static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, unsigned int flags)
{
struct inode * inode;
ino_t ino;
@ -94,7 +94,7 @@ struct dentry *ext2_get_parent(struct dentry *child)
* If the create succeeds, we fill in the inode information
* with d_instantiate().
*/
static int ext2_create (struct inode * dir, struct dentry * dentry, umode_t mode, struct nameidata *nd)
static int ext2_create (struct inode * dir, struct dentry * dentry, umode_t mode, bool excl)
{
struct inode *inode;
@ -242,8 +242,8 @@ static int ext2_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
if (err)
goto out_fail;
d_instantiate(dentry, inode);
unlock_new_inode(inode);
d_instantiate(dentry, inode);
out:
return err;

6
fs/ext2/super.c
View File

@ -1184,6 +1184,12 @@ static int ext2_sync_fs(struct super_block *sb, int wait)
struct ext2_sb_info *sbi = EXT2_SB(sb);
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
/*
* Write quota structures to quota file, sync_blockdev() will write
* them to disk later
*/
dquot_writeback_dquots(sb, -1);
spin_lock(&sbi->s_lock);
if (es->s_state & cpu_to_le16(EXT2_VALID_FS)) {
ext2_debug("setting valid to 0\n");

3
fs/ext3/dir.c
View File

@ -300,10 +300,11 @@ loff_t ext3_dir_llseek(struct file *file, loff_t offset, int origin)
{
struct inode *inode = file->f_mapping->host;
int dx_dir = is_dx_dir(inode);
loff_t htree_max = ext3_get_htree_eof(file);
if (likely(dx_dir))
return generic_file_llseek_size(file, offset, origin,
ext3_get_htree_eof(file));
htree_max, htree_max);
else
return generic_file_llseek(file, offset, origin);
}

8
fs/ext3/namei.c
View File

@ -1011,7 +1011,7 @@ static struct buffer_head * ext3_dx_find_entry(struct inode *dir,
return NULL;
}
static struct dentry *ext3_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd)
static struct dentry *ext3_lookup(struct inode * dir, struct dentry *dentry, unsigned int flags)
{
struct inode * inode;
struct ext3_dir_entry_2 * de;
@ -1671,8 +1671,8 @@ static int ext3_add_nondir(handle_t *handle,
int err = ext3_add_entry(handle, dentry, inode);
if (!err) {
ext3_mark_inode_dirty(handle, inode);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
d_instantiate(dentry, inode);
return 0;
}
drop_nlink(inode);
@ -1690,7 +1690,7 @@ static int ext3_add_nondir(handle_t *handle,
* with d_instantiate().
*/
static int ext3_create (struct inode * dir, struct dentry * dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
handle_t *handle;
struct inode * inode;
@ -1836,8 +1836,8 @@ static int ext3_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
if (err)
goto out_clear_inode;
d_instantiate(dentry, inode);
unlock_new_inode(inode);
d_instantiate(dentry, inode);
out_stop:
brelse(dir_block);
ext3_journal_stop(handle);

5
fs/ext3/super.c
View File

@ -2526,6 +2526,11 @@ static int ext3_sync_fs(struct super_block *sb, int wait)
tid_t target;
trace_ext3_sync_fs(sb, wait);
/*
* Writeback quota in non-journalled quota case - journalled quota has
* no dirty dquots
*/
dquot_writeback_dquots(sb, -1);
if (journal_start_commit(EXT3_SB(sb)->s_journal, &target)) {
if (wait)
log_wait_commit(EXT3_SB(sb)->s_journal, target);

75
fs/ext4/dir.c
View File

@ -324,74 +324,27 @@ static inline loff_t ext4_get_htree_eof(struct file *filp)
/*
* ext4_dir_llseek() based on generic_file_llseek() to handle both
* non-htree and htree directories, where the "offset" is in terms
* of the filename hash value instead of the byte offset.
* ext4_dir_llseek() calls generic_file_llseek_size to handle htree
* directories, where the "offset" is in terms of the filename hash
* value instead of the byte offset.
*
* NOTE: offsets obtained *before* ext4_set_inode_flag(dir, EXT4_INODE_INDEX)
* will be invalid once the directory was converted into a dx directory
* Because we may return a 64-bit hash that is well beyond offset limits,
* we need to pass the max hash as the maximum allowable offset in
* the htree directory case.
*
* For non-htree, ext4_llseek already chooses the proper max offset.
*/
loff_t ext4_dir_llseek(struct file *file, loff_t offset, int origin)
{
struct inode *inode = file->f_mapping->host;
loff_t ret = -EINVAL;
int dx_dir = is_dx_dir(inode);
loff_t htree_max = ext4_get_htree_eof(file);
mutex_lock(&inode->i_mutex);
/* NOTE: relative offsets with dx directories might not work
* as expected, as it is difficult to figure out the
* correct offset between dx hashes */
switch (origin) {
case SEEK_END:
if (unlikely(offset > 0))
goto out_err; /* not supported for directories */
/* so only negative offsets are left, does that have a
* meaning for directories at all? */
if (dx_dir)
offset += ext4_get_htree_eof(file);
else
offset += inode->i_size;
break;
case SEEK_CUR:
/*
* Here we special-case the lseek(fd, 0, SEEK_CUR)
* position-querying operation. Avoid rewriting the "same"
* f_pos value back to the file because a concurrent read(),
* write() or lseek() might have altered it
*/
if (offset == 0) {
offset = file->f_pos;
goto out_ok;
}
offset += file->f_pos;
break;
}
if (unlikely(offset < 0))
goto out_err;
if (!dx_dir) {
if (offset > inode->i_sb->s_maxbytes)
goto out_err;
} else if (offset > ext4_get_htree_eof(file))
goto out_err;
/* Special lock needed here? */
if (offset != file->f_pos) {
file->f_pos = offset;
file->f_version = 0;
}
out_ok:
ret = offset;
out_err:
mutex_unlock(&inode->i_mutex);
return ret;
if (likely(dx_dir))
return generic_file_llseek_size(file, offset, origin,
htree_max, htree_max);
else
return ext4_llseek(file, offset, origin);
}
/*

9
fs/ext4/file.c
View File

@ -211,9 +211,9 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
}
/*
* ext4_llseek() copied from generic_file_llseek() to handle both
* block-mapped and extent-mapped maxbytes values. This should
* otherwise be identical with generic_file_llseek().
* ext4_llseek() handles both block-mapped and extent-mapped maxbytes values
* by calling generic_file_llseek_size() with the appropriate maxbytes
* value for each.
*/
loff_t ext4_llseek(struct file *file, loff_t offset, int origin)
{
@ -225,7 +225,8 @@ loff_t ext4_llseek(struct file *file, loff_t offset, int origin)
else
maxbytes = inode->i_sb->s_maxbytes;
return generic_file_llseek_size(file, offset, origin, maxbytes);
return generic_file_llseek_size(file, offset, origin,
maxbytes, i_size_read(inode));
}
const struct file_operations ext4_file_operations = {

11
fs/ext4/fsync.c
View File

@ -135,14 +135,7 @@ static int ext4_sync_parent(struct inode *inode)
inode = igrab(inode);
while (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) {
ext4_clear_inode_state(inode, EXT4_STATE_NEWENTRY);
dentry = NULL;
spin_lock(&inode->i_lock);
if (!list_empty(&inode->i_dentry)) {
dentry = list_first_entry(&inode->i_dentry,
struct dentry, d_alias);
dget(dentry);
}
spin_unlock(&inode->i_lock);
dentry = d_find_any_alias(inode);
if (!dentry)
break;
next = igrab(dentry->d_parent->d_inode);
@ -232,7 +225,7 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
if (!journal) {
ret = __sync_inode(inode, datasync);
if (!ret && !list_empty(&inode->i_dentry))
if (!ret && !hlist_empty(&inode->i_dentry))
ret = ext4_sync_parent(inode);
goto out;
}

4
fs/ext4/ioctl.c
View File

@ -389,7 +389,7 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (err)
return err;
err = mnt_want_write(filp->f_path.mnt);
err = mnt_want_write_file(filp);
if (err)
goto resizefs_out;
@ -401,7 +401,7 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
if (err == 0)
err = err2;
mnt_drop_write(filp->f_path.mnt);
mnt_drop_write_file(filp);
resizefs_out:
ext4_resize_end(sb);
return err;

8
fs/ext4/namei.c
View File

@ -1312,7 +1312,7 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir, const struct q
return NULL;
}
static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
struct inode *inode;
struct ext4_dir_entry_2 *de;
@ -2072,8 +2072,8 @@ static int ext4_add_nondir(handle_t *handle,
int err = ext4_add_entry(handle, dentry, inode);
if (!err) {
ext4_mark_inode_dirty(handle, inode);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
d_instantiate(dentry, inode);
return 0;
}
drop_nlink(inode);
@ -2091,7 +2091,7 @@ static int ext4_add_nondir(handle_t *handle,
* with d_instantiate().
*/
static int ext4_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
handle_t *handle;
struct inode *inode;
@ -2249,8 +2249,8 @@ static int ext4_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
err = ext4_mark_inode_dirty(handle, dir);
if (err)
goto out_clear_inode;
d_instantiate(dentry, inode);
unlock_new_inode(inode);
d_instantiate(dentry, inode);
out_stop:
brelse(dir_block);
ext4_journal_stop(handle);

5
fs/ext4/super.c
View File

@ -4325,6 +4325,11 @@ static int ext4_sync_fs(struct super_block *sb, int wait)
trace_ext4_sync_fs(sb, wait);
flush_workqueue(sbi->dio_unwritten_wq);
/*
* Writeback quota in non-journalled quota case - journalled quota has
* no dirty dquots
*/
dquot_writeback_dquots(sb, -1);
if (jbd2_journal_start_commit(sbi->s_journal, &target)) {
if (wait)
jbd2_log_wait_commit(sbi->s_journal, target);

4
fs/fat/namei_msdos.c
View File

@ -201,7 +201,7 @@ static const struct dentry_operations msdos_dentry_operations = {
/***** Get inode using directory and name */
static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct super_block *sb = dir->i_sb;
struct fat_slot_info sinfo;
@ -265,7 +265,7 @@ static int msdos_add_entry(struct inode *dir, const unsigned char *name,
/***** Create a file */
static int msdos_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
struct super_block *sb = dir->i_sb;
struct inode *inode = NULL;

16
fs/fat/namei_vfat.c
View File

@ -41,9 +41,9 @@ static int vfat_revalidate_shortname(struct dentry *dentry)
return ret;
}
static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
static int vfat_revalidate(struct dentry *dentry, unsigned int flags)
{
if (nd && nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
/* This is not negative dentry. Always valid. */
@ -52,9 +52,9 @@ static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
return vfat_revalidate_shortname(dentry);
}
static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
static int vfat_revalidate_ci(struct dentry *dentry, unsigned int flags)
{
if (nd && nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
/*
@ -74,7 +74,7 @@ static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
* This may be nfsd (or something), anyway, we can't see the
* intent of this. So, since this can be for creation, drop it.
*/
if (!nd)
if (!flags)
return 0;
/*
@ -82,7 +82,7 @@ static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
* case sensitive name which is specified by user if this is
* for creation.
*/
if (nd->flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
return 0;
return vfat_revalidate_shortname(dentry);
@ -714,7 +714,7 @@ static int vfat_d_anon_disconn(struct dentry *dentry)
}
static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct super_block *sb = dir->i_sb;
struct fat_slot_info sinfo;
@ -772,7 +772,7 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
}
static int vfat_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
struct super_block *sb = dir->i_sb;
struct inode *inode;

81
fs/file_table.c
View File

@ -23,6 +23,8 @@
#include <linux/lglock.h>
#include <linux/percpu_counter.h>
#include <linux/percpu.h>
#include <linux/hardirq.h>
#include <linux/task_work.h>
#include <linux/ima.h>
#include <linux/atomic.h>
@ -251,7 +253,6 @@ static void __fput(struct file *file)
}
fops_put(file->f_op);
put_pid(file->f_owner.pid);
file_sb_list_del(file);
if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
i_readcount_dec(inode);
if (file->f_mode & FMODE_WRITE)
@ -263,10 +264,77 @@ static void __fput(struct file *file)
mntput(mnt);
}
static DEFINE_SPINLOCK(delayed_fput_lock);
static LIST_HEAD(delayed_fput_list);
static void delayed_fput(struct work_struct *unused)
{
LIST_HEAD(head);
spin_lock_irq(&delayed_fput_lock);
list_splice_init(&delayed_fput_list, &head);
spin_unlock_irq(&delayed_fput_lock);
while (!list_empty(&head)) {
struct file *f = list_first_entry(&head, struct file, f_u.fu_list);
list_del_init(&f->f_u.fu_list);
__fput(f);
}
}
static void ____fput(struct callback_head *work)
{
__fput(container_of(work, struct file, f_u.fu_rcuhead));
}
/*
* If kernel thread really needs to have the final fput() it has done
* to complete, call this. The only user right now is the boot - we
* *do* need to make sure our writes to binaries on initramfs has
* not left us with opened struct file waiting for __fput() - execve()
* won't work without that. Please, don't add more callers without
* very good reasons; in particular, never call that with locks
* held and never call that from a thread that might need to do
* some work on any kind of umount.
*/
void flush_delayed_fput(void)
{
delayed_fput(NULL);
}
static DECLARE_WORK(delayed_fput_work, delayed_fput);
void fput(struct file *file)
{
if (atomic_long_dec_and_test(&file->f_count))
if (atomic_long_dec_and_test(&file->f_count)) {
struct task_struct *task = current;
file_sb_list_del(file);
if (unlikely(in_interrupt() || task->flags & PF_KTHREAD)) {
unsigned long flags;
spin_lock_irqsave(&delayed_fput_lock, flags);
list_add(&file->f_u.fu_list, &delayed_fput_list);
schedule_work(&delayed_fput_work);
spin_unlock_irqrestore(&delayed_fput_lock, flags);
return;
}
init_task_work(&file->f_u.fu_rcuhead, ____fput);
task_work_add(task, &file->f_u.fu_rcuhead, true);
}
}
/*
* synchronous analog of fput(); for kernel threads that might be needed
* in some umount() (and thus can't use flush_delayed_fput() without
* risking deadlocks), need to wait for completion of __fput() and know
* for this specific struct file it won't involve anything that would
* need them. Use only if you really need it - at the very least,
* don't blindly convert fput() by kernel thread to that.
*/
void __fput_sync(struct file *file)
{
if (atomic_long_dec_and_test(&file->f_count)) {
struct task_struct *task = current;
file_sb_list_del(file);
BUG_ON(!(task->flags & PF_KTHREAD));
__fput(file);
}
}
EXPORT_SYMBOL(fput);
@ -483,10 +551,8 @@ void mark_files_ro(struct super_block *sb)
{
struct file *f;
retry:
lg_global_lock(&files_lglock);
do_file_list_for_each_entry(sb, f) {
struct vfsmount *mnt;
if (!S_ISREG(f->f_path.dentry->d_inode->i_mode))
continue;
if (!file_count(f))
@ -499,12 +565,7 @@ void mark_files_ro(struct super_block *sb)
if (file_check_writeable(f) != 0)
continue;
file_release_write(f);
mnt = mntget(f->f_path.mnt);
/* This can sleep, so we can't hold the spinlock. */
lg_global_unlock(&files_lglock);
mnt_drop_write(mnt);
mntput(mnt);
goto retry;
mnt_drop_write_file(f);
} while_file_list_for_each_entry;
lg_global_unlock(&files_lglock);
}

4
fs/freevxfs/vxfs_lookup.c
View File

@ -48,7 +48,7 @@
#define VXFS_BLOCK_PER_PAGE(sbp) ((PAGE_CACHE_SIZE / (sbp)->s_blocksize))
static struct dentry * vxfs_lookup(struct inode *, struct dentry *, struct nameidata *);
static struct dentry * vxfs_lookup(struct inode *, struct dentry *, unsigned int);
static int vxfs_readdir(struct file *, void *, filldir_t);
const struct inode_operations vxfs_dir_inode_ops = {
@ -203,7 +203,7 @@ vxfs_inode_by_name(struct inode *dip, struct dentry *dp)
* in the return pointer.
*/
static struct dentry *
vxfs_lookup(struct inode *dip, struct dentry *dp, struct nameidata *nd)
vxfs_lookup(struct inode *dip, struct dentry *dp, unsigned int flags)
{
struct inode *ip = NULL;
ino_t ino;

5
fs/fs-writeback.c
View File

@ -1315,6 +1315,8 @@ void writeback_inodes_sb_nr(struct super_block *sb,
.reason = reason,
};
if (sb->s_bdi == &noop_backing_dev_info)
return;
WARN_ON(!rwsem_is_locked(&sb->s_umount));
bdi_queue_work(sb->s_bdi, &work);
wait_for_completion(&done);
@ -1398,6 +1400,9 @@ void sync_inodes_sb(struct super_block *sb)
.reason = WB_REASON_SYNC,
};
/* Nothing to do? */
if (sb->s_bdi == &noop_backing_dev_info)
return;
WARN_ON(!rwsem_is_locked(&sb->s_umount));
bdi_queue_work(sb->s_bdi, &work);

32
fs/fs_struct.c
View File

@ -6,18 +6,6 @@
#include <linux/fs_struct.h>
#include "internal.h"
static inline void path_get_longterm(struct path *path)
{
path_get(path);
mnt_make_longterm(path->mnt);
}
static inline void path_put_longterm(struct path *path)
{
mnt_make_shortterm(path->mnt);
path_put(path);
}
/*
* Replace the fs->{rootmnt,root} with {mnt,dentry}. Put the old values.
* It can block.
@ -26,7 +14,7 @@ void set_fs_root(struct fs_struct *fs, struct path *path)
{
struct path old_root;
path_get_longterm(path);
path_get(path);
spin_lock(&fs->lock);
write_seqcount_begin(&fs->seq);
old_root = fs->root;
@ -34,7 +22,7 @@ void set_fs_root(struct fs_struct *fs, struct path *path)
write_seqcount_end(&fs->seq);
spin_unlock(&fs->lock);
if (old_root.dentry)
path_put_longterm(&old_root);
path_put(&old_root);
}
/*
@ -45,7 +33,7 @@ void set_fs_pwd(struct fs_struct *fs, struct path *path)
{
struct path old_pwd;
path_get_longterm(path);
path_get(path);
spin_lock(&fs->lock);
write_seqcount_begin(&fs->seq);
old_pwd = fs->pwd;
@ -54,7 +42,7 @@ void set_fs_pwd(struct fs_struct *fs, struct path *path)
spin_unlock(&fs->lock);
if (old_pwd.dentry)
path_put_longterm(&old_pwd);
path_put(&old_pwd);
}
static inline int replace_path(struct path *p, const struct path *old, const struct path *new)
@ -84,7 +72,7 @@ void chroot_fs_refs(struct path *old_root, struct path *new_root)
write_seqcount_end(&fs->seq);
while (hits--) {
count++;
path_get_longterm(new_root);
path_get(new_root);
}
spin_unlock(&fs->lock);
}
@ -92,13 +80,13 @@ void chroot_fs_refs(struct path *old_root, struct path *new_root)
} while_each_thread(g, p);
read_unlock(&tasklist_lock);
while (count--)
path_put_longterm(old_root);
path_put(old_root);
}
void free_fs_struct(struct fs_struct *fs)
{
path_put_longterm(&fs->root);
path_put_longterm(&fs->pwd);
path_put(&fs->root);
path_put(&fs->pwd);
kmem_cache_free(fs_cachep, fs);
}
@ -132,9 +120,9 @@ struct fs_struct *copy_fs_struct(struct fs_struct *old)
spin_lock(&old->lock);
fs->root = old->root;
path_get_longterm(&fs->root);
path_get(&fs->root);
fs->pwd = old->pwd;
path_get_longterm(&fs->pwd);
path_get(&fs->pwd);
spin_unlock(&old->lock);
}
return fs;

107
fs/fuse/dir.c
View File

@ -154,7 +154,7 @@ u64 fuse_get_attr_version(struct fuse_conn *fc)
* the lookup once more. If the lookup results in the same inode,
* then refresh the attributes, timeouts and mark the dentry valid.
*/
static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags)
{
struct inode *inode;
@ -174,7 +174,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
if (!inode)
return 0;
if (nd && (nd->flags & LOOKUP_RCU))
if (flags & LOOKUP_RCU)
return -ECHILD;
fc = get_fuse_conn(inode);
@ -249,7 +249,7 @@ static struct dentry *fuse_d_add_directory(struct dentry *entry,
/* This tries to shrink the subtree below alias */
fuse_invalidate_entry(alias);
dput(alias);
if (!list_empty(&inode->i_dentry))
if (!hlist_empty(&inode->i_dentry))
return ERR_PTR(-EBUSY);
} else {
dput(alias);
@ -316,7 +316,7 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, struct qstr *name,
}
static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
struct nameidata *nd)
unsigned int flags)
{
int err;
struct fuse_entry_out outarg;
@ -370,7 +370,8 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
* 'mknod' + 'open' requests.
*/
static int fuse_create_open(struct inode *dir, struct dentry *entry,
umode_t mode, struct nameidata *nd)
struct file *file, unsigned flags,
umode_t mode, int *opened)
{
int err;
struct inode *inode;
@ -381,15 +382,11 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
struct fuse_open_out outopen;
struct fuse_entry_out outentry;
struct fuse_file *ff;
struct file *file;
int flags = nd->intent.open.flags;
if (fc->no_create)
return -ENOSYS;
forget = fuse_alloc_forget();
err = -ENOMEM;
if (!forget)
return -ENOMEM;
goto out_err;
req = fuse_get_req(fc);
err = PTR_ERR(req);
@ -428,11 +425,8 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
req->out.args[1].value = &outopen;
fuse_request_send(fc, req);
err = req->out.h.error;
if (err) {
if (err == -ENOSYS)
fc->no_create = 1;
if (err)
goto out_free_ff;
}
err = -EIO;
if (!S_ISREG(outentry.attr.mode) || invalid_nodeid(outentry.nodeid))
@ -448,28 +442,74 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
flags &= ~(O_CREAT | O_EXCL | O_TRUNC);
fuse_sync_release(ff, flags);
fuse_queue_forget(fc, forget, outentry.nodeid, 1);
return -ENOMEM;
err = -ENOMEM;
goto out_err;
}
kfree(forget);
d_instantiate(entry, inode);
fuse_change_entry_timeout(entry, &outentry);
fuse_invalidate_attr(dir);
file = lookup_instantiate_filp(nd, entry, generic_file_open);
if (IS_ERR(file)) {
err = finish_open(file, entry, generic_file_open, opened);
if (err) {
fuse_sync_release(ff, flags);
return PTR_ERR(file);
} else {
file->private_data = fuse_file_get(ff);
fuse_finish_open(inode, file);
}
file->private_data = fuse_file_get(ff);
fuse_finish_open(inode, file);
return 0;
out_free_ff:
fuse_file_free(ff);
out_put_request:
fuse_put_request(fc, req);
out_put_forget_req:
kfree(forget);
return err;
out_free_ff:
fuse_file_free(ff);
out_put_request:
fuse_put_request(fc, req);
out_put_forget_req:
kfree(forget);
out_err:
return err;
}
static int fuse_mknod(struct inode *, struct dentry *, umode_t, dev_t);
static int fuse_atomic_open(struct inode *dir, struct dentry *entry,
struct file *file, unsigned flags,
umode_t mode, int *opened)
{
int err;
struct fuse_conn *fc = get_fuse_conn(dir);
struct dentry *res = NULL;
if (d_unhashed(entry)) {
res = fuse_lookup(dir, entry, 0);
if (IS_ERR(res))
return PTR_ERR(res);
if (res)
entry = res;
}
if (!(flags & O_CREAT) || entry->d_inode)
goto no_open;
/* Only creates */
*opened |= FILE_CREATED;
if (fc->no_create)
goto mknod;
err = fuse_create_open(dir, entry, file, flags, mode, opened);
if (err == -ENOSYS) {
fc->no_create = 1;
goto mknod;
}
out_dput:
dput(res);
return err;
mknod:
err = fuse_mknod(dir, entry, mode, 0);
if (err)
goto out_dput;
no_open:
return finish_no_open(file, res);
}
/*
@ -571,14 +611,8 @@ static int fuse_mknod(struct inode *dir, struct dentry *entry, umode_t mode,
}
static int fuse_create(struct inode *dir, struct dentry *entry, umode_t mode,
struct nameidata *nd)
bool excl)
{
if (nd) {
int err = fuse_create_open(dir, entry, mode, nd);
if (err != -ENOSYS)
return err;
/* Fall back on mknod */
}
return fuse_mknod(dir, entry, mode, 0);
}
@ -1646,6 +1680,7 @@ static const struct inode_operations fuse_dir_inode_operations = {
.link = fuse_link,
.setattr = fuse_setattr,
.create = fuse_create,
.atomic_open = fuse_atomic_open,
.mknod = fuse_mknod,
.permission = fuse_permission,
.getattr = fuse_getattr,

6
fs/gfs2/dentry.c
View File

@ -25,7 +25,7 @@
/**
* gfs2_drevalidate - Check directory lookup consistency
* @dentry: the mapping to check
* @nd:
* @flags: lookup flags
*
* Check to make sure the lookup necessary to arrive at this inode from its
* parent is still good.
@ -33,7 +33,7 @@
* Returns: 1 if the dentry is ok, 0 if it isn't
*/
static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
static int gfs2_drevalidate(struct dentry *dentry, unsigned int flags)
{
struct dentry *parent;
struct gfs2_sbd *sdp;
@ -44,7 +44,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
int error;
int had_lock = 0;
if (nd && nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
parent = dget_parent(dentry);

7
fs/gfs2/inode.c
View File

@ -755,11 +755,8 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
*/
static int gfs2_create(struct inode *dir, struct dentry *dentry,
umode_t mode, struct nameidata *nd)
umode_t mode, bool excl)
{
int excl = 0;
if (nd && (nd->flags & LOOKUP_EXCL))
excl = 1;
return gfs2_create_inode(dir, dentry, S_IFREG | mode, 0, NULL, 0, excl);
}
@ -775,7 +772,7 @@ static int gfs2_create(struct inode *dir, struct dentry *dentry,
*/
static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct inode *inode = gfs2_lookupi(dir, &dentry->d_name, 0);
if (inode && !IS_ERR(inode)) {

5
fs/gfs2/ops_fstype.c
View File

@ -1286,7 +1286,7 @@ static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags,
error = -EBUSY;
goto error_bdev;
}
s = sget(fs_type, test_gfs2_super, set_gfs2_super, bdev);
s = sget(fs_type, test_gfs2_super, set_gfs2_super, flags, bdev);
mutex_unlock(&bdev->bd_fsfreeze_mutex);
error = PTR_ERR(s);
if (IS_ERR(s))
@ -1316,7 +1316,6 @@ static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags,
} else {
char b[BDEVNAME_SIZE];
s->s_flags = flags;
s->s_mode = mode;
strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
sb_set_blocksize(s, block_size(bdev));
@ -1360,7 +1359,7 @@ static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type,
dev_name, error);
return ERR_PTR(error);
}
s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super,
s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, flags,
path.dentry->d_inode->i_sb->s_bdev);
path_put(&path);
if (IS_ERR(s)) {

4
fs/gfs2/quota.c
View File

@ -1108,7 +1108,7 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
}
}
int gfs2_quota_sync(struct super_block *sb, int type, int wait)
int gfs2_quota_sync(struct super_block *sb, int type)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
struct gfs2_quota_data **qda;
@ -1154,7 +1154,7 @@ int gfs2_quota_sync(struct super_block *sb, int type, int wait)
static int gfs2_quota_sync_timeo(struct super_block *sb, int type)
{
return gfs2_quota_sync(sb, type, 0);
return gfs2_quota_sync(sb, type);
}
int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id)

2
fs/gfs2/quota.h
View File

@ -26,7 +26,7 @@ extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
u32 uid, u32 gid);
extern int gfs2_quota_sync(struct super_block *sb, int type, int wait);
extern int gfs2_quota_sync(struct super_block *sb, int type);
extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
extern int gfs2_quota_init(struct gfs2_sbd *sdp);

4
fs/gfs2/super.c
View File

@ -838,7 +838,7 @@ static int gfs2_make_fs_ro(struct gfs2_sbd *sdp)
int error;
flush_workqueue(gfs2_delete_workqueue);
gfs2_quota_sync(sdp->sd_vfs, 0, 1);
gfs2_quota_sync(sdp->sd_vfs, 0);
gfs2_statfs_sync(sdp->sd_vfs, 0);
error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE,
@ -952,6 +952,8 @@ static void gfs2_put_super(struct super_block *sb)
static int gfs2_sync_fs(struct super_block *sb, int wait)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
gfs2_quota_sync(sb, -1);
if (wait && sdp)
gfs2_log_flush(sdp, NULL);
return 0;

2
fs/gfs2/sys.c
View File

@ -168,7 +168,7 @@ static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
gfs2_quota_sync(sdp->sd_vfs, 0, 1);
gfs2_quota_sync(sdp->sd_vfs, 0);
return len;
}

4
fs/hfs/dir.c
View File

@ -18,7 +18,7 @@
* hfs_lookup()
*/
static struct dentry *hfs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
hfs_cat_rec rec;
struct hfs_find_data fd;
@ -187,7 +187,7 @@ static int hfs_dir_release(struct inode *inode, struct file *file)
* the directory and the name (and its length) of the new file.
*/
static int hfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
struct inode *inode;
int res;

2
fs/hfs/extent.c
View File

@ -432,7 +432,7 @@ int hfs_extend_file(struct inode *inode)
if (inode->i_ino < HFS_FIRSTUSER_CNID)
set_bit(HFS_FLG_ALT_MDB_DIRTY, &HFS_SB(sb)->flags);
set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
sb->s_dirt = 1;
hfs_mark_mdb_dirty(sb);
}
return res;

15
fs/hfs/hfs_fs.h
View File

@ -14,6 +14,7 @@
#include <linux/mutex.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/workqueue.h>
#include <asm/byteorder.h>
#include <asm/uaccess.h>
@ -137,16 +138,15 @@ struct hfs_sb_info {
gid_t s_gid; /* The gid of all files */
int session, part;
struct nls_table *nls_io, *nls_disk;
struct mutex bitmap_lock;
unsigned long flags;
u16 blockoffset;
int fs_div;
struct super_block *sb;
int work_queued; /* non-zero delayed work is queued */
struct delayed_work mdb_work; /* MDB flush delayed work */
spinlock_t work_lock; /* protects mdb_work and work_queued */
};
#define HFS_FLG_BITMAP_DIRTY 0
@ -226,6 +226,9 @@ extern int hfs_compare_dentry(const struct dentry *parent,
extern void hfs_asc2mac(struct super_block *, struct hfs_name *, struct qstr *);
extern int hfs_mac2asc(struct super_block *, char *, const struct hfs_name *);
/* super.c */
extern void hfs_mark_mdb_dirty(struct super_block *sb);
extern struct timezone sys_tz;
/*
@ -253,7 +256,7 @@ static inline const char *hfs_mdb_name(struct super_block *sb)
static inline void hfs_bitmap_dirty(struct super_block *sb)
{
set_bit(HFS_FLG_BITMAP_DIRTY, &HFS_SB(sb)->flags);
sb->s_dirt = 1;
hfs_mark_mdb_dirty(sb);
}
#define sb_bread512(sb, sec, data) ({ \

16
fs/hfs/inode.c
View File

@ -220,7 +220,7 @@ struct inode *hfs_new_inode(struct inode *dir, struct qstr *name, umode_t mode)
insert_inode_hash(inode);
mark_inode_dirty(inode);
set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
sb->s_dirt = 1;
hfs_mark_mdb_dirty(sb);
return inode;
}
@ -235,7 +235,7 @@ void hfs_delete_inode(struct inode *inode)
if (HFS_I(inode)->cat_key.ParID == cpu_to_be32(HFS_ROOT_CNID))
HFS_SB(sb)->root_dirs--;
set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
sb->s_dirt = 1;
hfs_mark_mdb_dirty(sb);
return;
}
HFS_SB(sb)->file_count--;
@ -248,7 +248,7 @@ void hfs_delete_inode(struct inode *inode)
}
}
set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
sb->s_dirt = 1;
hfs_mark_mdb_dirty(sb);
}
void hfs_inode_read_fork(struct inode *inode, struct hfs_extent *ext,
@ -489,7 +489,7 @@ int hfs_write_inode(struct inode *inode, struct writeback_control *wbc)
}
static struct dentry *hfs_file_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct inode *inode = NULL;
hfs_cat_rec rec;
@ -644,13 +644,7 @@ static int hfs_file_fsync(struct file *filp, loff_t start, loff_t end,
/* sync the superblock to buffers */
sb = inode->i_sb;
if (sb->s_dirt) {
lock_super(sb);
sb->s_dirt = 0;
if (!(sb->s_flags & MS_RDONLY))
hfs_mdb_commit(sb);
unlock_super(sb);
}
flush_delayed_work_sync(&HFS_SB(sb)->mdb_work);
/* .. finally sync the buffers to disk */
err = sync_blockdev(sb->s_bdev);
if (!ret)

13
fs/hfs/mdb.c
View File

@ -260,6 +260,10 @@ void hfs_mdb_commit(struct super_block *sb)
{
struct hfs_mdb *mdb = HFS_SB(sb)->mdb;
if (sb->s_flags & MS_RDONLY)
return;
lock_buffer(HFS_SB(sb)->mdb_bh);
if (test_and_clear_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags)) {
/* These parameters may have been modified, so write them back */
mdb->drLsMod = hfs_mtime();
@ -283,9 +287,13 @@ void hfs_mdb_commit(struct super_block *sb)
&mdb->drXTFlSize, NULL);
hfs_inode_write_fork(HFS_SB(sb)->cat_tree->inode, mdb->drCTExtRec,
&mdb->drCTFlSize, NULL);
lock_buffer(HFS_SB(sb)->alt_mdb_bh);
memcpy(HFS_SB(sb)->alt_mdb, HFS_SB(sb)->mdb, HFS_SECTOR_SIZE);
HFS_SB(sb)->alt_mdb->drAtrb |= cpu_to_be16(HFS_SB_ATTRIB_UNMNT);
HFS_SB(sb)->alt_mdb->drAtrb &= cpu_to_be16(~HFS_SB_ATTRIB_INCNSTNT);
unlock_buffer(HFS_SB(sb)->alt_mdb_bh);
mark_buffer_dirty(HFS_SB(sb)->alt_mdb_bh);
sync_dirty_buffer(HFS_SB(sb)->alt_mdb_bh);
}
@ -308,7 +316,11 @@ void hfs_mdb_commit(struct super_block *sb)
break;
}
len = min((int)sb->s_blocksize - off, size);
lock_buffer(bh);
memcpy(bh->b_data + off, ptr, len);
unlock_buffer(bh);
mark_buffer_dirty(bh);
brelse(bh);
block++;
@ -317,6 +329,7 @@ void hfs_mdb_commit(struct super_block *sb)
size -= len;
}
}
unlock_buffer(HFS_SB(sb)->mdb_bh);
}
void hfs_mdb_close(struct super_block *sb)

73
fs/hfs/super.c
View File

@ -29,43 +29,9 @@ static struct kmem_cache *hfs_inode_cachep;
MODULE_LICENSE("GPL");
/*
* hfs_write_super()
*
* Description:
* This function is called by the VFS only. When the filesystem
* is mounted r/w it updates the MDB on disk.
* Input Variable(s):
* struct super_block *sb: Pointer to the hfs superblock
* Output Variable(s):
* NONE
* Returns:
* void
* Preconditions:
* 'sb' points to a "valid" (struct super_block).
* Postconditions:
* The MDB is marked 'unsuccessfully unmounted' by clearing bit 8 of drAtrb
* (hfs_put_super() must set this flag!). Some MDB fields are updated
* and the MDB buffer is written to disk by calling hfs_mdb_commit().
*/
static void hfs_write_super(struct super_block *sb)
{
lock_super(sb);
sb->s_dirt = 0;
/* sync everything to the buffers */
if (!(sb->s_flags & MS_RDONLY))
hfs_mdb_commit(sb);
unlock_super(sb);
}
static int hfs_sync_fs(struct super_block *sb, int wait)
{
lock_super(sb);
hfs_mdb_commit(sb);
sb->s_dirt = 0;
unlock_super(sb);
return 0;
}
@ -78,13 +44,44 @@ static int hfs_sync_fs(struct super_block *sb, int wait)
*/
static void hfs_put_super(struct super_block *sb)
{
if (sb->s_dirt)
hfs_write_super(sb);
cancel_delayed_work_sync(&HFS_SB(sb)->mdb_work);
hfs_mdb_close(sb);
/* release the MDB's resources */
hfs_mdb_put(sb);
}
static void flush_mdb(struct work_struct *work)
{
struct hfs_sb_info *sbi;
struct super_block *sb;
sbi = container_of(work, struct hfs_sb_info, mdb_work.work);
sb = sbi->sb;
spin_lock(&sbi->work_lock);
sbi->work_queued = 0;
spin_unlock(&sbi->work_lock);
hfs_mdb_commit(sb);
}
void hfs_mark_mdb_dirty(struct super_block *sb)
{
struct hfs_sb_info *sbi = HFS_SB(sb);
unsigned long delay;
if (sb->s_flags & MS_RDONLY)
return;
spin_lock(&sbi->work_lock);
if (!sbi->work_queued) {
delay = msecs_to_jiffies(dirty_writeback_interval * 10);
queue_delayed_work(system_long_wq, &sbi->mdb_work, delay);
sbi->work_queued = 1;
}
spin_unlock(&sbi->work_lock);
}
/*
* hfs_statfs()
*
@ -184,7 +181,6 @@ static const struct super_operations hfs_super_operations = {
.write_inode = hfs_write_inode,
.evict_inode = hfs_evict_inode,
.put_super = hfs_put_super,
.write_super = hfs_write_super,
.sync_fs = hfs_sync_fs,
.statfs = hfs_statfs,
.remount_fs = hfs_remount,
@ -387,7 +383,10 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
if (!sbi)
return -ENOMEM;
sbi->sb = sb;
sb->s_fs_info = sbi;
spin_lock_init(&sbi->work_lock);
INIT_DELAYED_WORK(&sbi->mdb_work, flush_mdb);
res = -EINVAL;
if (!parse_options((char *)data, sbi)) {

4
fs/hfs/sysdep.c
View File

@ -13,12 +13,12 @@
/* dentry case-handling: just lowercase everything */
static int hfs_revalidate_dentry(struct dentry *dentry, struct nameidata *nd)
static int hfs_revalidate_dentry(struct dentry *dentry, unsigned int flags)
{
struct inode *inode;
int diff;
if (nd->flags & LOOKUP_RCU)
if (flags & LOOKUP_RCU)
return -ECHILD;
inode = dentry->d_inode;

4
fs/hfsplus/bitmap.c
View File

@ -153,7 +153,7 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size,
kunmap(page);
*max = offset + (curr - pptr) * 32 + i - start;
sbi->free_blocks -= *max;
sb->s_dirt = 1;
hfsplus_mark_mdb_dirty(sb);
dprint(DBG_BITMAP, "-> %u,%u\n", start, *max);
out:
mutex_unlock(&sbi->alloc_mutex);
@ -228,7 +228,7 @@ int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
set_page_dirty(page);
kunmap(page);
sbi->free_blocks += len;
sb->s_dirt = 1;
hfsplus_mark_mdb_dirty(sb);
mutex_unlock(&sbi->alloc_mutex);
return 0;

6
fs/hfsplus/dir.c
View File

@ -25,7 +25,7 @@ static inline void hfsplus_instantiate(struct dentry *dentry,
/* Find the entry inside dir named dentry->d_name */
static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct inode *inode = NULL;
struct hfs_find_data fd;
@ -316,7 +316,7 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
sbi->file_count++;
dst_dir->i_sb->s_dirt = 1;
hfsplus_mark_mdb_dirty(dst_dir->i_sb);
out:
mutex_unlock(&sbi->vh_mutex);
return res;
@ -465,7 +465,7 @@ static int hfsplus_mknod(struct inode *dir, struct dentry *dentry,
}
static int hfsplus_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
return hfsplus_mknod(dir, dentry, mode, 0);
}

7
fs/hfsplus/hfsplus_fs.h
View File

@ -153,8 +153,11 @@ struct hfsplus_sb_info {
gid_t gid;
int part, session;
unsigned long flags;
int work_queued; /* non-zero delayed work is queued */
struct delayed_work sync_work; /* FS sync delayed work */
spinlock_t work_lock; /* protects sync_work and work_queued */
};
#define HFSPLUS_SB_WRITEBACKUP 0
@ -428,7 +431,7 @@ int hfsplus_show_options(struct seq_file *, struct dentry *);
/* super.c */
struct inode *hfsplus_iget(struct super_block *, unsigned long);
int hfsplus_sync_fs(struct super_block *sb, int wait);
void hfsplus_mark_mdb_dirty(struct super_block *sb);
/* tables.c */
extern u16 hfsplus_case_fold_table[];

8
fs/hfsplus/inode.c
View File

@ -168,7 +168,7 @@ const struct dentry_operations hfsplus_dentry_operations = {
};
static struct dentry *hfsplus_file_lookup(struct inode *dir,
struct dentry *dentry, struct nameidata *nd)
struct dentry *dentry, unsigned int flags)
{
struct hfs_find_data fd;
struct super_block *sb = dir->i_sb;
@ -431,7 +431,7 @@ struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
sbi->file_count++;
insert_inode_hash(inode);
mark_inode_dirty(inode);
sb->s_dirt = 1;
hfsplus_mark_mdb_dirty(sb);
return inode;
}
@ -442,7 +442,7 @@ void hfsplus_delete_inode(struct inode *inode)
if (S_ISDIR(inode->i_mode)) {
HFSPLUS_SB(sb)->folder_count--;
sb->s_dirt = 1;
hfsplus_mark_mdb_dirty(sb);
return;
}
HFSPLUS_SB(sb)->file_count--;
@ -455,7 +455,7 @@ void hfsplus_delete_inode(struct inode *inode)
inode->i_size = 0;
hfsplus_file_truncate(inode);
}
sb->s_dirt = 1;
hfsplus_mark_mdb_dirty(sb);
}
void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)

46
fs/hfsplus/super.c
View File

@ -124,7 +124,7 @@ static int hfsplus_system_write_inode(struct inode *inode)
if (fork->total_size != cpu_to_be64(inode->i_size)) {
set_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags);
inode->i_sb->s_dirt = 1;
hfsplus_mark_mdb_dirty(inode->i_sb);
}
hfsplus_inode_write_fork(inode, fork);
if (tree)
@ -161,7 +161,7 @@ static void hfsplus_evict_inode(struct inode *inode)
}
}
int hfsplus_sync_fs(struct super_block *sb, int wait)
static int hfsplus_sync_fs(struct super_block *sb, int wait)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct hfsplus_vh *vhdr = sbi->s_vhdr;
@ -171,9 +171,7 @@ int hfsplus_sync_fs(struct super_block *sb, int wait)
if (!wait)
return 0;
dprint(DBG_SUPER, "hfsplus_write_super\n");
sb->s_dirt = 0;
dprint(DBG_SUPER, "hfsplus_sync_fs\n");
/*
* Explicitly write out the special metadata inodes.
@ -226,12 +224,34 @@ int hfsplus_sync_fs(struct super_block *sb, int wait)
return error;
}
static void hfsplus_write_super(struct super_block *sb)
static void delayed_sync_fs(struct work_struct *work)
{
if (!(sb->s_flags & MS_RDONLY))
hfsplus_sync_fs(sb, 1);
else
sb->s_dirt = 0;
struct hfsplus_sb_info *sbi;
sbi = container_of(work, struct hfsplus_sb_info, sync_work.work);
spin_lock(&sbi->work_lock);
sbi->work_queued = 0;
spin_unlock(&sbi->work_lock);
hfsplus_sync_fs(sbi->alloc_file->i_sb, 1);
}
void hfsplus_mark_mdb_dirty(struct super_block *sb)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
unsigned long delay;
if (sb->s_flags & MS_RDONLY)
return;
spin_lock(&sbi->work_lock);
if (!sbi->work_queued) {
delay = msecs_to_jiffies(dirty_writeback_interval * 10);
queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
sbi->work_queued = 1;
}
spin_unlock(&sbi->work_lock);
}
static void hfsplus_put_super(struct super_block *sb)
@ -240,8 +260,7 @@ static void hfsplus_put_super(struct super_block *sb)
dprint(DBG_SUPER, "hfsplus_put_super\n");
if (!sb->s_fs_info)
return;
cancel_delayed_work_sync(&sbi->sync_work);
if (!(sb->s_flags & MS_RDONLY) && sbi->s_vhdr) {
struct hfsplus_vh *vhdr = sbi->s_vhdr;
@ -328,7 +347,6 @@ static const struct super_operations hfsplus_sops = {
.write_inode = hfsplus_write_inode,
.evict_inode = hfsplus_evict_inode,
.put_super = hfsplus_put_super,
.write_super = hfsplus_write_super,
.sync_fs = hfsplus_sync_fs,
.statfs = hfsplus_statfs,
.remount_fs = hfsplus_remount,
@ -355,6 +373,8 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
sb->s_fs_info = sbi;
mutex_init(&sbi->alloc_mutex);
mutex_init(&sbi->vh_mutex);
spin_lock_init(&sbi->work_lock);
INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
hfsplus_fill_defaults(sbi);
err = -EINVAL;

4
fs/hostfs/hostfs_kern.c
View File

@ -553,7 +553,7 @@ static int read_name(struct inode *ino, char *name)
}
int hostfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
bool excl)
{
struct inode *inode;
char *name;
@ -595,7 +595,7 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
}
struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
struct nameidata *nd)
unsigned int flags)
{
struct inode *inode;
char *name;

2
fs/hpfs/dir.c
View File

@ -189,7 +189,7 @@ static int hpfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
* to tell read_inode to read fnode or not.
*/
struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;

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