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authorNick Piggin <npiggin@suse.de>2007-02-20 22:57:54 +0100
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-21 02:10:13 +0100
commitffda9d302267dbb7fc9bc38f6e4c1b3d61a536a9 (patch)
treed3b95c0b7dc2edc602e71e2ff8389de79ea243ac /fs/buffer.c
parent[PATCH] shm: make sysv ipc shared memory use stacked files (diff)
downloadlinux-ffda9d302267dbb7fc9bc38f6e4c1b3d61a536a9.tar.xz
linux-ffda9d302267dbb7fc9bc38f6e4c1b3d61a536a9.zip
[PATCH] fs: fix __block_write_full_page error case buffer submission
Andrew noticed that unlocking the page before submitting all buffers for writeout could cause problems if the IO completes before we've finished messing around with the page buffers, and they subsequently get freed. Even if there were no bug, it is a good idea to bring the error case into line with the common case here. 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>
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index f99c509697cd..e95fe4f8d11a 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1743,7 +1743,6 @@ recover:
SetPageError(page);
BUG_ON(PageWriteback(page));
set_page_writeback(page);
- unlock_page(page);
do {
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
@@ -1753,6 +1752,7 @@ recover:
}
bh = next;
} while (bh != head);
+ unlock_page(page);
goto done;
}