mirror of https://gitee.com/openkylin/linux.git
reiserfs: convert to new aops
Convert reiserfs to new aops Signed-off-by: Vladimir Saveliev <vs@namesys.com> Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Vladimir Saveliev
Linus Torvalds
parent
797b4cffdf
commit
ba9d8cec6c
|
|
@ -17,11 +17,12 @@
|
|||
#include <linux/mpage.h>
|
||||
#include <linux/writeback.h>
|
||||
#include <linux/quotaops.h>
|
||||
#include <linux/swap.h>
|
||||
|
||||
static int reiserfs_commit_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to);
|
||||
static int reiserfs_prepare_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to);
|
||||
int reiserfs_commit_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to);
|
||||
int reiserfs_prepare_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to);
|
||||
|
||||
void reiserfs_delete_inode(struct inode *inode)
|
||||
{
|
||||
|
|
@ -2550,8 +2551,71 @@ static int reiserfs_writepage(struct page *page, struct writeback_control *wbc)
|
|||
return reiserfs_write_full_page(page, wbc);
|
||||
}
|
||||
|
||||
static int reiserfs_prepare_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to)
|
||||
static int reiserfs_write_begin(struct file *file,
|
||||
struct address_space *mapping,
|
||||
loff_t pos, unsigned len, unsigned flags,
|
||||
struct page **pagep, void **fsdata)
|
||||
{
|
||||
struct inode *inode;
|
||||
struct page *page;
|
||||
pgoff_t index;
|
||||
int ret;
|
||||
int old_ref = 0;
|
||||
|
||||
index = pos >> PAGE_CACHE_SHIFT;
|
||||
page = __grab_cache_page(mapping, index);
|
||||
if (!page)
|
||||
return -ENOMEM;
|
||||
*pagep = page;
|
||||
|
||||
inode = mapping->host;
|
||||
reiserfs_wait_on_write_block(inode->i_sb);
|
||||
fix_tail_page_for_writing(page);
|
||||
if (reiserfs_transaction_running(inode->i_sb)) {
|
||||
struct reiserfs_transaction_handle *th;
|
||||
th = (struct reiserfs_transaction_handle *)current->
|
||||
journal_info;
|
||||
BUG_ON(!th->t_refcount);
|
||||
BUG_ON(!th->t_trans_id);
|
||||
old_ref = th->t_refcount;
|
||||
th->t_refcount++;
|
||||
}
|
||||
ret = block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
|
||||
reiserfs_get_block);
|
||||
if (ret && reiserfs_transaction_running(inode->i_sb)) {
|
||||
struct reiserfs_transaction_handle *th = current->journal_info;
|
||||
/* this gets a little ugly. If reiserfs_get_block returned an
|
||||
* error and left a transacstion running, we've got to close it,
|
||||
* and we've got to free handle if it was a persistent transaction.
|
||||
*
|
||||
* But, if we had nested into an existing transaction, we need
|
||||
* to just drop the ref count on the handle.
|
||||
*
|
||||
* If old_ref == 0, the transaction is from reiserfs_get_block,
|
||||
* and it was a persistent trans. Otherwise, it was nested above.
|
||||
*/
|
||||
if (th->t_refcount > old_ref) {
|
||||
if (old_ref)
|
||||
th->t_refcount--;
|
||||
else {
|
||||
int err;
|
||||
reiserfs_write_lock(inode->i_sb);
|
||||
err = reiserfs_end_persistent_transaction(th);
|
||||
reiserfs_write_unlock(inode->i_sb);
|
||||
if (err)
|
||||
ret = err;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (ret) {
|
||||
unlock_page(page);
|
||||
page_cache_release(page);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int reiserfs_prepare_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to)
|
||||
{
|
||||
struct inode *inode = page->mapping->host;
|
||||
int ret;
|
||||
|
|
@ -2604,8 +2668,100 @@ static sector_t reiserfs_aop_bmap(struct address_space *as, sector_t block)
|
|||
return generic_block_bmap(as, block, reiserfs_bmap);
|
||||
}
|
||||
|
||||
static int reiserfs_commit_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to)
|
||||
static int reiserfs_write_end(struct file *file, struct address_space *mapping,
|
||||
loff_t pos, unsigned len, unsigned copied,
|
||||
struct page *page, void *fsdata)
|
||||
{
|
||||
struct inode *inode = page->mapping->host;
|
||||
int ret = 0;
|
||||
int update_sd = 0;
|
||||
struct reiserfs_transaction_handle *th;
|
||||
unsigned start;
|
||||
|
||||
|
||||
reiserfs_wait_on_write_block(inode->i_sb);
|
||||
if (reiserfs_transaction_running(inode->i_sb))
|
||||
th = current->journal_info;
|
||||
else
|
||||
th = NULL;
|
||||
|
||||
start = pos & (PAGE_CACHE_SIZE - 1);
|
||||
if (unlikely(copied < len)) {
|
||||
if (!PageUptodate(page))
|
||||
copied = 0;
|
||||
|
||||
page_zero_new_buffers(page, start + copied, start + len);
|
||||
}
|
||||
flush_dcache_page(page);
|
||||
|
||||
reiserfs_commit_page(inode, page, start, start + copied);
|
||||
|
||||
/* generic_commit_write does this for us, but does not update the
|
||||
** transaction tracking stuff when the size changes. So, we have
|
||||
** to do the i_size updates here.
|
||||
*/
|
||||
pos += copied;
|
||||
if (pos > inode->i_size) {
|
||||
struct reiserfs_transaction_handle myth;
|
||||
reiserfs_write_lock(inode->i_sb);
|
||||
/* If the file have grown beyond the border where it
|
||||
can have a tail, unmark it as needing a tail
|
||||
packing */
|
||||
if ((have_large_tails(inode->i_sb)
|
||||
&& inode->i_size > i_block_size(inode) * 4)
|
||||
|| (have_small_tails(inode->i_sb)
|
||||
&& inode->i_size > i_block_size(inode)))
|
||||
REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask;
|
||||
|
||||
ret = journal_begin(&myth, inode->i_sb, 1);
|
||||
if (ret) {
|
||||
reiserfs_write_unlock(inode->i_sb);
|
||||
goto journal_error;
|
||||
}
|
||||
reiserfs_update_inode_transaction(inode);
|
||||
inode->i_size = pos;
|
||||
/*
|
||||
* this will just nest into our transaction. It's important
|
||||
* to use mark_inode_dirty so the inode gets pushed around on the
|
||||
* dirty lists, and so that O_SYNC works as expected
|
||||
*/
|
||||
mark_inode_dirty(inode);
|
||||
reiserfs_update_sd(&myth, inode);
|
||||
update_sd = 1;
|
||||
ret = journal_end(&myth, inode->i_sb, 1);
|
||||
reiserfs_write_unlock(inode->i_sb);
|
||||
if (ret)
|
||||
goto journal_error;
|
||||
}
|
||||
if (th) {
|
||||
reiserfs_write_lock(inode->i_sb);
|
||||
if (!update_sd)
|
||||
mark_inode_dirty(inode);
|
||||
ret = reiserfs_end_persistent_transaction(th);
|
||||
reiserfs_write_unlock(inode->i_sb);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
out:
|
||||
unlock_page(page);
|
||||
page_cache_release(page);
|
||||
return ret == 0 ? copied : ret;
|
||||
|
||||
journal_error:
|
||||
if (th) {
|
||||
reiserfs_write_lock(inode->i_sb);
|
||||
if (!update_sd)
|
||||
reiserfs_update_sd(th, inode);
|
||||
ret = reiserfs_end_persistent_transaction(th);
|
||||
reiserfs_write_unlock(inode->i_sb);
|
||||
}
|
||||
|
||||
goto out;
|
||||
}
|
||||
|
||||
int reiserfs_commit_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to)
|
||||
{
|
||||
struct inode *inode = page->mapping->host;
|
||||
loff_t pos = ((loff_t) page->index << PAGE_CACHE_SHIFT) + to;
|
||||
|
|
@ -2999,8 +3155,8 @@ const struct address_space_operations reiserfs_address_space_operations = {
|
|||
.releasepage = reiserfs_releasepage,
|
||||
.invalidatepage = reiserfs_invalidatepage,
|
||||
.sync_page = block_sync_page,
|
||||
.prepare_write = reiserfs_prepare_write,
|
||||
.commit_write = reiserfs_commit_write,
|
||||
.write_begin = reiserfs_write_begin,
|
||||
.write_end = reiserfs_write_end,
|
||||
.bmap = reiserfs_aop_bmap,
|
||||
.direct_IO = reiserfs_direct_IO,
|
||||
.set_page_dirty = reiserfs_set_page_dirty,
|
||||
|
|
|
|||
|
|
@ -128,6 +128,10 @@ long reiserfs_compat_ioctl(struct file *file, unsigned int cmd,
|
|||
}
|
||||
#endif
|
||||
|
||||
int reiserfs_commit_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to);
|
||||
int reiserfs_prepare_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to);
|
||||
/*
|
||||
** reiserfs_unpack
|
||||
** Function try to convert tail from direct item into indirect.
|
||||
|
|
@ -175,15 +179,13 @@ static int reiserfs_unpack(struct inode *inode, struct file *filp)
|
|||
if (!page) {
|
||||
goto out;
|
||||
}
|
||||
retval =
|
||||
mapping->a_ops->prepare_write(NULL, page, write_from, write_from);
|
||||
retval = reiserfs_prepare_write(NULL, page, write_from, write_from);
|
||||
if (retval)
|
||||
goto out_unlock;
|
||||
|
||||
/* conversion can change page contents, must flush */
|
||||
flush_dcache_page(page);
|
||||
retval =
|
||||
mapping->a_ops->commit_write(NULL, page, write_from, write_from);
|
||||
retval = reiserfs_commit_write(NULL, page, write_from, write_from);
|
||||
REISERFS_I(inode)->i_flags |= i_nopack_mask;
|
||||
|
||||
out_unlock:
|
||||
|
|
|
|||
|
|
@ -426,6 +426,12 @@ static inline __u32 xattr_hash(const char *msg, int len)
|
|||
return csum_partial(msg, len, 0);
|
||||
}
|
||||
|
||||
int reiserfs_commit_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to);
|
||||
int reiserfs_prepare_write(struct file *f, struct page *page,
|
||||
unsigned from, unsigned to);
|
||||
|
||||
|
||||
/* Generic extended attribute operations that can be used by xa plugins */
|
||||
|
||||
/*
|
||||
|
|
@ -512,15 +518,15 @@ reiserfs_xattr_set(struct inode *inode, const char *name, const void *buffer,
|
|||
rxh->h_hash = cpu_to_le32(xahash);
|
||||
}
|
||||
|
||||
err = mapping->a_ops->prepare_write(fp, page, page_offset,
|
||||
page_offset + chunk + skip);
|
||||
err = reiserfs_prepare_write(fp, page, page_offset,
|
||||
page_offset + chunk + skip);
|
||||
if (!err) {
|
||||
if (buffer)
|
||||
memcpy(data + skip, buffer + buffer_pos, chunk);
|
||||
err =
|
||||
mapping->a_ops->commit_write(fp, page, page_offset,
|
||||
page_offset + chunk +
|
||||
skip);
|
||||
reiserfs_commit_write(fp, page, page_offset,
|
||||
page_offset + chunk +
|
||||
skip);
|
||||
}
|
||||
unlock_page(page);
|
||||
reiserfs_put_page(page);
|
||||
|
|
|
|||
Loading…
Reference in New Issue