diff options
| author | Zach Brown <zach.brown@oracle.com> | 2005-12-15 14:28:17 -0800 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2006-01-03 11:45:42 -0800 |
| commit | 994fc28c7b1e697ac56befe4aecabf23f0689f46 (patch) | |
| tree | da36d162e9bd077e9b5be385b28e2db90475c263 /fs | |
| parent | 7063fbf2261194f72ee75afca67b3b38b554b5fa (diff) | |
| download | lwn-994fc28c7b1e697ac56befe4aecabf23f0689f46.tar.gz lwn-994fc28c7b1e697ac56befe4aecabf23f0689f46.zip | |
[PATCH] add AOP_TRUNCATED_PAGE, prepend AOP_ to WRITEPAGE_ACTIVATE
readpage(), prepare_write(), and commit_write() callers are updated to
understand the special return code AOP_TRUNCATED_PAGE in the style of
writepage() and WRITEPAGE_ACTIVATE. AOP_TRUNCATED_PAGE tells the caller that
the callee has unlocked the page and that the operation should be tried again
with a new page. OCFS2 uses this to detect and work around a lock inversion in
its aop methods. There should be no change in behaviour for methods that don't
return AOP_TRUNCATED_PAGE.
WRITEPAGE_ACTIVATE is also prepended with AOP_ for consistency and they are
made enums so that kerneldoc can be used to document their semantics.
Signed-off-by: Zach Brown <zach.brown@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/mpage.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/mpage.c b/fs/mpage.c index c5adcdddf3cc..f1d2d02bd4c8 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -721,7 +721,7 @@ retry: &last_block_in_bio, &ret, wbc, page->mapping->a_ops->writepage); } - if (unlikely(ret == WRITEPAGE_ACTIVATE)) + if (unlikely(ret == AOP_WRITEPAGE_ACTIVATE)) unlock_page(page); if (ret || (--(wbc->nr_to_write) <= 0)) done = 1; |