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authorNick Piggin <npiggin@suse.de>2007-05-06 14:49:04 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:12:51 -0700
commit6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2 (patch)
tree8bbfe5072279227cc50a941ad4813908082426a1 /fs/minix
parent714b8171af9c930a59a0da8f6fe50518e70ab035 (diff)
downloadlinux-linaro-6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2.tar.gz
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/minix')
-rw-r--r--fs/minix/dir.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index cb4cb571fdd..e207cbe7095 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -65,7 +65,6 @@ static struct page * dir_get_page(struct inode *dir, unsigned long n)
struct address_space *mapping = dir->i_mapping;
struct page *page = read_mapping_page(mapping, n, NULL);
if (!IS_ERR(page)) {
- wait_on_page_locked(page);
kmap(page);
if (!PageUptodate(page))
goto fail;