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| author |   Nick Piggin <npiggin@suse.de> | 2007-05-06 14:49:04 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-07 12:12:51 -0700 |
| commit | 6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2 (patch) | |
| tree | 8bbfe5072279227cc50a941ad4813908082426a1 /fs/ntfs/file.c | |
| parent | slab: ensure cache_alloc_refill terminates (diff) | |
| download | linux-dev-6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2.tar.xz linux-dev-6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2.zip | |
mm: make read_cache_page synchronous
Ensure pages are uptodate after returning from read_cache_page, which allows
us to cut out most of the filesystem-internal PageUptodate calls.
I didn't have a great look down the call chains, but this appears to fixes 7
possible use-before uptodate in hfs, 2 in hfsplus, 1 in jfs, a few in
ecryptfs, 1 in jffs2, and a possible cleared data overwritten with readpage in
block2mtd. All depending on whether the filler is async and/or can return
with a !uptodate page.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ntfs/file.c')
| -rw-r--r-- | fs/ntfs/file.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index d69c4595ccd0..dbbac5593106 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -236,8 +236,7 @@ do_non_resident_extend: err = PTR_ERR(page); goto init_err_out; } - wait_on_page_locked(page); - if (unlikely(!PageUptodate(page) || PageError(page))) { + if (unlikely(PageError(page))) { page_cache_release(page); err = -EIO; goto init_err_out; |