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inotify: rename mark_entry to just mark 

rename anything in inotify that deals with mark_entry to just be mark.  It
makes a lot more sense.

Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Eric Paris 2009-12-17 21:24:24 -05:00
parent 841bdc10f5
commit 000285deb9
3 changed files with 123 additions and 124 deletions
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7
fs/notify/inotify/inotify.h
View File

@ -9,13 +9,12 @@ struct inotify_event_private_data {
int wd;
};
struct inotify_inode_mark_entry {
/* fsnotify_mark MUST be the first thing */
struct fsnotify_mark fsn_entry;
struct inotify_inode_mark {
struct fsnotify_mark fsn_mark;
int wd;
};
extern void inotify_ignored_and_remove_idr(struct fsnotify_mark *entry,
extern void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
struct fsnotify_group *group);
extern void inotify_free_event_priv(struct fsnotify_event_private_data *event_priv);

48
fs/notify/inotify/inotify_fsnotify.c
View File

@ -88,8 +88,8 @@ static int inotify_merge(struct list_head *list, struct fsnotify_event *event)
static int inotify_handle_event(struct fsnotify_group *group, struct fsnotify_event *event)
{
struct fsnotify_mark *entry;
struct inotify_inode_mark_entry *ientry;
struct fsnotify_mark *fsn_mark;
struct inotify_inode_mark *i_mark;
struct inode *to_tell;
struct inotify_event_private_data *event_priv;
struct fsnotify_event_private_data *fsn_event_priv;
@ -98,14 +98,14 @@ static int inotify_handle_event(struct fsnotify_group *group, struct fsnotify_ev
to_tell = event->to_tell;
spin_lock(&to_tell->i_lock);
entry = fsnotify_find_mark(group, to_tell);
fsn_mark = fsnotify_find_mark(group, to_tell);
spin_unlock(&to_tell->i_lock);
/* race with watch removal? We already passes should_send */
if (unlikely(!entry))
if (unlikely(!fsn_mark))
return 0;
ientry = container_of(entry, struct inotify_inode_mark_entry,
fsn_entry);
wd = ientry->wd;
i_mark = container_of(fsn_mark, struct inotify_inode_mark,
fsn_mark);
wd = i_mark->wd;
event_priv = kmem_cache_alloc(event_priv_cachep, GFP_KERNEL);
if (unlikely(!event_priv))
@ -127,37 +127,37 @@ static int inotify_handle_event(struct fsnotify_group *group, struct fsnotify_ev
}
/*
* If we hold the entry until after the event is on the queue
* If we hold the fsn_mark until after the event is on the queue
* IN_IGNORED won't be able to pass this event in the queue
*/
fsnotify_put_mark(entry);
fsnotify_put_mark(fsn_mark);
return ret;
}
static void inotify_freeing_mark(struct fsnotify_mark *entry, struct fsnotify_group *group)
static void inotify_freeing_mark(struct fsnotify_mark *fsn_mark, struct fsnotify_group *group)
{
inotify_ignored_and_remove_idr(entry, group);
inotify_ignored_and_remove_idr(fsn_mark, group);
}
static bool inotify_should_send_event(struct fsnotify_group *group, struct inode *inode,
struct vfsmount *mnt, __u32 mask, void *data,
int data_type)
{
struct fsnotify_mark *entry;
struct fsnotify_mark *fsn_mark;
bool send;
spin_lock(&inode->i_lock);
entry = fsnotify_find_mark(group, inode);
fsn_mark = fsnotify_find_mark(group, inode);
spin_unlock(&inode->i_lock);
if (!entry)
if (!fsn_mark)
return false;
mask = (mask & ~FS_EVENT_ON_CHILD);
send = (entry->mask & mask);
send = (fsn_mark->mask & mask);
/* find took a reference */
fsnotify_put_mark(entry);
fsnotify_put_mark(fsn_mark);
return send;
}
@ -171,18 +171,18 @@ static bool inotify_should_send_event(struct fsnotify_group *group, struct inode
*/
static int idr_callback(int id, void *p, void *data)
{
struct fsnotify_mark *entry;
struct inotify_inode_mark_entry *ientry;
struct fsnotify_mark *fsn_mark;
struct inotify_inode_mark *i_mark;
static bool warned = false;
if (warned)
return 0;
warned = true;
entry = p;
ientry = container_of(entry, struct inotify_inode_mark_entry, fsn_entry);
fsn_mark = p;
i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark);
WARN(1, "inotify closing but id=%d for entry=%p in group=%p still in "
WARN(1, "inotify closing but id=%d for fsn_mark=%p in group=%p still in "
"idr. Probably leaking memory\n", id, p, data);
/*
@ -191,9 +191,9 @@ static int idr_callback(int id, void *p, void *data)
* out why we got here and the panic is no worse than the original
* BUG() that was here.
*/
if (entry)
printk(KERN_WARNING "entry->group=%p inode=%p wd=%d\n",
entry->group, entry->i.inode, ientry->wd);
if (fsn_mark)
printk(KERN_WARNING "fsn_mark->group=%p inode=%p wd=%d\n",
fsn_mark->group, fsn_mark->i.inode, i_mark->wd);
return 0;
}

192
fs/notify/inotify/inotify_user.c
View File

@ -353,7 +353,7 @@ static int inotify_find_inode(const char __user *dirname, struct path *path, uns
static int inotify_add_to_idr(struct idr *idr, spinlock_t *idr_lock,
int *last_wd,
struct inotify_inode_mark_entry *ientry)
struct inotify_inode_mark *i_mark)
{
int ret;
@ -362,12 +362,12 @@ static int inotify_add_to_idr(struct idr *idr, spinlock_t *idr_lock,
return -ENOMEM;
spin_lock(idr_lock);
ret = idr_get_new_above(idr, ientry, *last_wd + 1,
&ientry->wd);
ret = idr_get_new_above(idr, i_mark, *last_wd + 1,
&i_mark->wd);
/* we added the mark to the idr, take a reference */
if (!ret) {
fsnotify_get_mark(&ientry->fsn_entry);
*last_wd = ientry->wd;
*last_wd = i_mark->wd;
fsnotify_get_mark(&i_mark->fsn_mark);
}
spin_unlock(idr_lock);
} while (ret == -EAGAIN);
@ -375,53 +375,53 @@ static int inotify_add_to_idr(struct idr *idr, spinlock_t *idr_lock,
return ret;
}
static struct inotify_inode_mark_entry *inotify_idr_find_locked(struct fsnotify_group *group,
static struct inotify_inode_mark *inotify_idr_find_locked(struct fsnotify_group *group,
int wd)
{
struct idr *idr = &group->inotify_data.idr;
spinlock_t *idr_lock = &group->inotify_data.idr_lock;
struct inotify_inode_mark_entry *ientry;
struct inotify_inode_mark *i_mark;
assert_spin_locked(idr_lock);
ientry = idr_find(idr, wd);
if (ientry) {
struct fsnotify_mark *fsn_entry = &ientry->fsn_entry;
i_mark = idr_find(idr, wd);
if (i_mark) {
struct fsnotify_mark *fsn_mark = &i_mark->fsn_mark;
fsnotify_get_mark(fsn_entry);
fsnotify_get_mark(fsn_mark);
/* One ref for being in the idr, one ref we just took */
BUG_ON(atomic_read(&fsn_entry->refcnt) < 2);
BUG_ON(atomic_read(&fsn_mark->refcnt) < 2);
}
return ientry;
return i_mark;
}
static struct inotify_inode_mark_entry *inotify_idr_find(struct fsnotify_group *group,
static struct inotify_inode_mark *inotify_idr_find(struct fsnotify_group *group,
int wd)
{
struct inotify_inode_mark_entry *ientry;
struct inotify_inode_mark *i_mark;
spinlock_t *idr_lock = &group->inotify_data.idr_lock;
spin_lock(idr_lock);
ientry = inotify_idr_find_locked(group, wd);
i_mark = inotify_idr_find_locked(group, wd);
spin_unlock(idr_lock);
return ientry;
return i_mark;
}
static void do_inotify_remove_from_idr(struct fsnotify_group *group,
struct inotify_inode_mark_entry *ientry)
struct inotify_inode_mark *i_mark)
{
struct idr *idr = &group->inotify_data.idr;
spinlock_t *idr_lock = &group->inotify_data.idr_lock;
int wd = ientry->wd;
int wd = i_mark->wd;
assert_spin_locked(idr_lock);
idr_remove(idr, wd);
/* removed from the idr, drop that ref */
fsnotify_put_mark(&ientry->fsn_entry);
fsnotify_put_mark(&i_mark->fsn_mark);
}
/*
@ -429,48 +429,48 @@ static void do_inotify_remove_from_idr(struct fsnotify_group *group,
* on the mark because it was in the idr.
*/
static void inotify_remove_from_idr(struct fsnotify_group *group,
struct inotify_inode_mark_entry *ientry)
struct inotify_inode_mark *i_mark)
{
spinlock_t *idr_lock = &group->inotify_data.idr_lock;
struct inotify_inode_mark_entry *found_ientry = NULL;
struct inotify_inode_mark *found_i_mark = NULL;
int wd;
spin_lock(idr_lock);
wd = ientry->wd;
wd = i_mark->wd;
/*
* does this ientry think it is in the idr? we shouldn't get called
* does this i_mark think it is in the idr? we shouldn't get called
* if it wasn't....
*/
if (wd == -1) {
WARN_ONCE(1, "%s: ientry=%p ientry->wd=%d ientry->group=%p"
" ientry->inode=%p\n", __func__, ientry, ientry->wd,
ientry->fsn_entry.group, ientry->fsn_entry.i.inode);
WARN_ONCE(1, "%s: i_mark=%p i_mark->wd=%d i_mark->group=%p"
" i_mark->inode=%p\n", __func__, i_mark, i_mark->wd,
i_mark->fsn_mark.group, i_mark->fsn_mark.i.inode);
goto out;
}
/* Lets look in the idr to see if we find it */
found_ientry = inotify_idr_find_locked(group, wd);
if (unlikely(!found_ientry)) {
WARN_ONCE(1, "%s: ientry=%p ientry->wd=%d ientry->group=%p"
" ientry->inode=%p\n", __func__, ientry, ientry->wd,
ientry->fsn_entry.group, ientry->fsn_entry.i.inode);
found_i_mark = inotify_idr_find_locked(group, wd);
if (unlikely(!found_i_mark)) {
WARN_ONCE(1, "%s: i_mark=%p i_mark->wd=%d i_mark->group=%p"
" i_mark->inode=%p\n", __func__, i_mark, i_mark->wd,
i_mark->fsn_mark.group, i_mark->fsn_mark.i.inode);
goto out;
}
/*
* We found an entry in the idr at the right wd, but it's
* not the entry we were told to remove. eparis seriously
* We found an mark in the idr at the right wd, but it's
* not the mark we were told to remove. eparis seriously
* fucked up somewhere.
*/
if (unlikely(found_ientry != ientry)) {
WARN_ONCE(1, "%s: ientry=%p ientry->wd=%d ientry->group=%p "
"entry->inode=%p found_ientry=%p found_ientry->wd=%d "
"found_ientry->group=%p found_ientry->inode=%p\n",
__func__, ientry, ientry->wd, ientry->fsn_entry.group,
ientry->fsn_entry.i.inode, found_ientry, found_ientry->wd,
found_ientry->fsn_entry.group,
found_ientry->fsn_entry.i.inode);
if (unlikely(found_i_mark != i_mark)) {
WARN_ONCE(1, "%s: i_mark=%p i_mark->wd=%d i_mark->group=%p "
"mark->inode=%p found_i_mark=%p found_i_mark->wd=%d "
"found_i_mark->group=%p found_i_mark->inode=%p\n",
__func__, i_mark, i_mark->wd, i_mark->fsn_mark.group,
i_mark->fsn_mark.i.inode, found_i_mark, found_i_mark->wd,
found_i_mark->fsn_mark.group,
found_i_mark->fsn_mark.i.inode);
goto out;
}
@ -479,30 +479,30 @@ static void inotify_remove_from_idr(struct fsnotify_group *group,
* one ref held by the caller trying to kill us
* one ref grabbed by inotify_idr_find
*/
if (unlikely(atomic_read(&ientry->fsn_entry.refcnt) < 3)) {
printk(KERN_ERR "%s: ientry=%p ientry->wd=%d ientry->group=%p"
" ientry->inode=%p\n", __func__, ientry, ientry->wd,
ientry->fsn_entry.group, ientry->fsn_entry.i.inode);
if (unlikely(atomic_read(&i_mark->fsn_mark.refcnt) < 3)) {
printk(KERN_ERR "%s: i_mark=%p i_mark->wd=%d i_mark->group=%p"
" i_mark->inode=%p\n", __func__, i_mark, i_mark->wd,
i_mark->fsn_mark.group, i_mark->fsn_mark.i.inode);
/* we can't really recover with bad ref cnting.. */
BUG();
}
do_inotify_remove_from_idr(group, ientry);
do_inotify_remove_from_idr(group, i_mark);
out:
/* match the ref taken by inotify_idr_find_locked() */
if (found_ientry)
fsnotify_put_mark(&found_ientry->fsn_entry);
ientry->wd = -1;
if (found_i_mark)
fsnotify_put_mark(&found_i_mark->fsn_mark);
i_mark->wd = -1;
spin_unlock(idr_lock);
}
/*
* Send IN_IGNORED for this wd, remove this wd from the idr.
*/
void inotify_ignored_and_remove_idr(struct fsnotify_mark *entry,
void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
struct fsnotify_group *group)
{
struct inotify_inode_mark_entry *ientry;
struct inotify_inode_mark *i_mark;
struct fsnotify_event *ignored_event;
struct inotify_event_private_data *event_priv;
struct fsnotify_event_private_data *fsn_event_priv;
@ -514,7 +514,7 @@ void inotify_ignored_and_remove_idr(struct fsnotify_mark *entry,
if (!ignored_event)
return;
ientry = container_of(entry, struct inotify_inode_mark_entry, fsn_entry);
i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark);
event_priv = kmem_cache_alloc(event_priv_cachep, GFP_NOFS);
if (unlikely(!event_priv))
@ -523,7 +523,7 @@ void inotify_ignored_and_remove_idr(struct fsnotify_mark *entry,
fsn_event_priv = &event_priv->fsnotify_event_priv_data;
fsn_event_priv->group = group;
event_priv->wd = ientry->wd;
event_priv->wd = i_mark->wd;
ret = fsnotify_add_notify_event(group, ignored_event, fsn_event_priv, NULL);
if (ret)
@ -534,28 +534,28 @@ void inotify_ignored_and_remove_idr(struct fsnotify_mark *entry,
/* matches the reference taken when the event was created */
fsnotify_put_event(ignored_event);
/* remove this entry from the idr */
inotify_remove_from_idr(group, ientry);
/* remove this mark from the idr */
inotify_remove_from_idr(group, i_mark);
atomic_dec(&group->inotify_data.user->inotify_watches);
}
/* ding dong the mark is dead */
static void inotify_free_mark(struct fsnotify_mark *entry)
static void inotify_free_mark(struct fsnotify_mark *fsn_mark)
{
struct inotify_inode_mark_entry *ientry;
struct inotify_inode_mark *i_mark;
ientry = container_of(entry, struct inotify_inode_mark_entry, fsn_entry);
i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark);
kmem_cache_free(inotify_inode_mark_cachep, ientry);
kmem_cache_free(inotify_inode_mark_cachep, i_mark);
}
static int inotify_update_existing_watch(struct fsnotify_group *group,
struct inode *inode,
u32 arg)
{
struct fsnotify_mark *entry;
struct inotify_inode_mark_entry *ientry;
struct fsnotify_mark *fsn_mark;
struct inotify_inode_mark *i_mark;
__u32 old_mask, new_mask;
__u32 mask;
int add = (arg & IN_MASK_ADD);
@ -567,35 +567,35 @@ static int inotify_update_existing_watch(struct fsnotify_group *group,
return -EINVAL;
spin_lock(&inode->i_lock);
entry = fsnotify_find_mark(group, inode);
fsn_mark = fsnotify_find_mark(group, inode);
spin_unlock(&inode->i_lock);
if (!entry)
if (!fsn_mark)
return -ENOENT;
ientry = container_of(entry, struct inotify_inode_mark_entry, fsn_entry);
i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark);
spin_lock(&entry->lock);
spin_lock(&fsn_mark->lock);
old_mask = entry->mask;
old_mask = fsn_mark->mask;
if (add) {
entry->mask |= mask;
new_mask = entry->mask;
fsn_mark->mask |= mask;
new_mask = fsn_mark->mask;
} else {
entry->mask = mask;
new_mask = entry->mask;
fsn_mark->mask = mask;
new_mask = fsn_mark->mask;
}
spin_unlock(&entry->lock);
spin_unlock(&fsn_mark->lock);
if (old_mask != new_mask) {
/* more bits in old than in new? */
int dropped = (old_mask & ~new_mask);
/* more bits in this entry than the inode's mask? */
/* more bits in this fsn_mark than the inode's mask? */
int do_inode = (new_mask & ~inode->i_fsnotify_mask);
/* more bits in this entry than the group? */
/* more bits in this fsn_mark than the group? */
int do_group = (new_mask & ~group->mask);
/* update the inode with this new entry */
/* update the inode with this new fsn_mark */
if (dropped || do_inode)
fsnotify_recalc_inode_mask(inode);
@ -605,10 +605,10 @@ static int inotify_update_existing_watch(struct fsnotify_group *group,
}
/* return the wd */
ret = ientry->wd;
ret = i_mark->wd;
/* match the get from fsnotify_find_mark() */
fsnotify_put_mark(entry);
fsnotify_put_mark(fsn_mark);
return ret;
}
@ -617,7 +617,7 @@ static int inotify_new_watch(struct fsnotify_group *group,
struct inode *inode,
u32 arg)
{
struct inotify_inode_mark_entry *tmp_ientry;
struct inotify_inode_mark *tmp_i_mark;
__u32 mask;
int ret;
struct idr *idr = &group->inotify_data.idr;
@ -628,44 +628,44 @@ static int inotify_new_watch(struct fsnotify_group *group,
if (unlikely(!mask))
return -EINVAL;
tmp_ientry = kmem_cache_alloc(inotify_inode_mark_cachep, GFP_KERNEL);
if (unlikely(!tmp_ientry))
tmp_i_mark = kmem_cache_alloc(inotify_inode_mark_cachep, GFP_KERNEL);
if (unlikely(!tmp_i_mark))
return -ENOMEM;
fsnotify_init_mark(&tmp_ientry->fsn_entry, inotify_free_mark);
tmp_ientry->fsn_entry.mask = mask;
tmp_ientry->wd = -1;
fsnotify_init_mark(&tmp_i_mark->fsn_mark, inotify_free_mark);
tmp_i_mark->fsn_mark.mask = mask;
tmp_i_mark->wd = -1;
ret = -ENOSPC;
if (atomic_read(&group->inotify_data.user->inotify_watches) >= inotify_max_user_watches)
goto out_err;
ret = inotify_add_to_idr(idr, idr_lock, &group->inotify_data.last_wd,
tmp_ientry);
tmp_i_mark);
if (ret)
goto out_err;
/* we are on the idr, now get on the inode */
ret = fsnotify_add_mark(&tmp_ientry->fsn_entry, group, inode, 0);
ret = fsnotify_add_mark(&tmp_i_mark->fsn_mark, group, inode, 0);
if (ret) {
/* we failed to get on the inode, get off the idr */
inotify_remove_from_idr(group, tmp_ientry);
inotify_remove_from_idr(group, tmp_i_mark);
goto out_err;
}
/* increment the number of watches the user has */
atomic_inc(&group->inotify_data.user->inotify_watches);
/* return the watch descriptor for this new entry */
ret = tmp_ientry->wd;
/* return the watch descriptor for this new mark */
ret = tmp_i_mark->wd;
/* if this mark added a new event update the group mask */
if (mask & ~group->mask)
fsnotify_recalc_group_mask(group);
out_err:
/* match the ref from fsnotify_init_markentry() */
fsnotify_put_mark(&tmp_ientry->fsn_entry);
/* match the ref from fsnotify_init_mark() */
fsnotify_put_mark(&tmp_i_mark->fsn_mark);
return ret;
}
@ -801,7 +801,7 @@ SYSCALL_DEFINE3(inotify_add_watch, int, fd, const char __user *, pathname,
SYSCALL_DEFINE2(inotify_rm_watch, int, fd, __s32, wd)
{
struct fsnotify_group *group;
struct inotify_inode_mark_entry *ientry;
struct inotify_inode_mark *i_mark;
struct file *filp;
int ret = 0, fput_needed;
@ -817,16 +817,16 @@ SYSCALL_DEFINE2(inotify_rm_watch, int, fd, __s32, wd)
group = filp->private_data;
ret = -EINVAL;
ientry = inotify_idr_find(group, wd);
if (unlikely(!ientry))
i_mark = inotify_idr_find(group, wd);
if (unlikely(!i_mark))
goto out;
ret = 0;
fsnotify_destroy_mark(&ientry->fsn_entry);
fsnotify_destroy_mark(&i_mark->fsn_mark);
/* match ref taken by inotify_idr_find */
fsnotify_put_mark(&ientry->fsn_entry);
fsnotify_put_mark(&i_mark->fsn_mark);
out:
fput_light(filp, fput_needed);
@ -840,7 +840,7 @@ SYSCALL_DEFINE2(inotify_rm_watch, int, fd, __s32, wd)
*/
static int __init inotify_user_setup(void)
{
inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark_entry, SLAB_PANIC);
inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark, SLAB_PANIC);
event_priv_cachep = KMEM_CACHE(inotify_event_private_data, SLAB_PANIC);
inotify_max_queued_events = 16384;