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[PATCH] mpage_writepages() page locking fix 

When ->writepage() returns WRITEPAGE_ACTIVATE, the page is still locked.
Explicitly unlock the page in mpage_writepages().

Signed-off-by: Nikita Danilov <nikita@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Nikita Danilov 2005-05-01 08:58:39 -07:00 committed by Linus Torvalds
parent 97e2bde47f
commit 552fca4cbe
1 changed files with 2 additions and 0 deletions
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2
fs/mpage.c
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@ -727,6 +727,8 @@ retry:
&last_block_in_bio, &ret, wbc, &last_block_in_bio, &ret, wbc,
writepage_fn); writepage_fn);
} }
if (unlikely(ret == WRITEPAGE_ACTIVATE))
unlock_page(page);
if (ret || (--(wbc->nr_to_write) <= 0)) if (ret || (--(wbc->nr_to_write) <= 0))
done = 1; done = 1;
if (wbc->nonblocking && bdi_write_congested(bdi)) { if (wbc->nonblocking && bdi_write_congested(bdi)) {