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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits)
  split invalidate_inodes()
  fs: skip I_FREEING inodes in writeback_sb_inodes
  fs: fold invalidate_list into invalidate_inodes
  fs: do not drop inode_lock in dispose_list
  fs: inode split IO and LRU lists
  fs: switch bdev inode bdi's correctly
  fs: fix buffer invalidation in invalidate_list
  fsnotify: use dget_parent
  smbfs: use dget_parent
  exportfs: use dget_parent
  fs: use RCU read side protection in d_validate
  fs: clean up dentry lru modification
  fs: split __shrink_dcache_sb
  fs: improve DCACHE_REFERENCED usage
  fs: use percpu counter for nr_dentry and nr_dentry_unused
  fs: simplify __d_free
  fs: take dcache_lock inside __d_path
  fs: do not assign default i_ino in new_inode
  fs: introduce a per-cpu last_ino allocator
  new helper: ihold()
  ...
This commit is contained in:
Linus Torvalds 2010-10-26 17:58:44 -07:00
commit 426e1f5cec
118 changed files with 863 additions and 701 deletions
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24
fs/reiserfs/inode.c
View file

@ -22,8 +22,6 @@
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_evict_inode(struct inode *inode)
{
@ -165,7 +163,7 @@ inline void make_le_item_head(struct item_head *ih, const struct cpu_key *key,
** but tail is still sitting in a direct item, and we can't write to
** it. So, look through this page, and check all the mapped buffers
** to make sure they have valid block numbers. Any that don't need
** to be unmapped, so that block_prepare_write will correctly call
** to be unmapped, so that __block_write_begin will correctly call
** reiserfs_get_block to convert the tail into an unformatted node
*/
static inline void fix_tail_page_for_writing(struct page *page)
@ -439,13 +437,13 @@ static int reiserfs_bmap(struct inode *inode, sector_t block,
}
/* special version of get_block that is only used by grab_tail_page right
** now. It is sent to block_prepare_write, and when you try to get a
** now. It is sent to __block_write_begin, and when you try to get a
** block past the end of the file (or a block from a hole) it returns
** -ENOENT instead of a valid buffer. block_prepare_write expects to
** -ENOENT instead of a valid buffer. __block_write_begin expects to
** be able to do i/o on the buffers returned, unless an error value
** is also returned.
**
** So, this allows block_prepare_write to be used for reading a single block
** So, this allows __block_write_begin to be used for reading a single block
** in a page. Where it does not produce a valid page for holes, or past the
** end of the file. This turns out to be exactly what we need for reading
** tails for conversion.
@ -558,11 +556,12 @@ static int convert_tail_for_hole(struct inode *inode,
**
** We must fix the tail page for writing because it might have buffers
** that are mapped, but have a block number of 0. This indicates tail
** data that has been read directly into the page, and block_prepare_write
** won't trigger a get_block in this case.
** data that has been read directly into the page, and
** __block_write_begin won't trigger a get_block in this case.
*/
fix_tail_page_for_writing(tail_page);
retval = reiserfs_prepare_write(NULL, tail_page, tail_start, tail_end);
retval = __reiserfs_write_begin(tail_page, tail_start,
tail_end - tail_start);
if (retval)
goto unlock;
@ -2033,7 +2032,7 @@ static int grab_tail_page(struct inode *inode,
/* start within the page of the last block in the file */
start = (offset / blocksize) * blocksize;
error = block_prepare_write(page, start, offset,
error = __block_write_begin(page, start, offset - start,
reiserfs_get_block_create_0);
if (error)
goto unlock;
@ -2628,8 +2627,7 @@ static int reiserfs_write_begin(struct file *file,
return ret;
}
int reiserfs_prepare_write(struct file *f, struct page *page,
unsigned from, unsigned to)
int __reiserfs_write_begin(struct page *page, unsigned from, unsigned len)
{
struct inode *inode = page->mapping->host;
int ret;
@ -2650,7 +2648,7 @@ int reiserfs_prepare_write(struct file *f, struct page *page,
th->t_refcount++;
}
ret = block_prepare_write(page, from, to, reiserfs_get_block);
ret = __block_write_begin(page, from, len, 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