diff options
| 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/ocfs2 | |
| parent | 714b8171af9c930a59a0da8f6fe50518e70ab035 (diff) | |
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/ocfs2')
| -rw-r--r-- | fs/ocfs2/symlink.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c index 40dc1a51f4a..7134007ba22 100644 --- a/fs/ocfs2/symlink.c +++ b/fs/ocfs2/symlink.c @@ -67,16 +67,9 @@ static char *ocfs2_page_getlink(struct dentry * dentry, page = read_mapping_page(mapping, 0, NULL); if (IS_ERR(page)) goto sync_fail; - wait_on_page_locked(page); - if (!PageUptodate(page)) - goto async_fail; *ppage = page; return kmap(page); -async_fail: - page_cache_release(page); - return ERR_PTR(-EIO); - sync_fail: return (char*)page; } |