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authorNick Piggin <npiggin@suse.de>2007-02-20 13:57:54 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-20 17:10:13 -0800
commitffda9d302267dbb7fc9bc38f6e4c1b3d61a536a9 (patch)
treed3b95c0b7dc2edc602e71e2ff8389de79ea243ac
parentbc56bba8f31bd99f350a5ebfd43d50f411b620c7 (diff)
downloadlinux-stericsson-ffda9d302267dbb7fc9bc38f6e4c1b3d61a536a9.tar.gz
[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>
-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;
}