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| author | Josef Bacik <josef@redhat.com> | 2009-07-05 12:08:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-07-06 13:57:03 -0700 |
| commit | c8236db9cd7aa492dcfcdcca702638e704abed49 (patch) | |
| tree | 75eb83051298fd1f9df426cafaaa6d3c422d1b68 /mm/filemap.c | |
| parent | a65e7bfcd74e4c0939f235d2bf9f48ddb3a57991 (diff) | |
| download | lwn-c8236db9cd7aa492dcfcdcca702638e704abed49.tar.gz lwn-c8236db9cd7aa492dcfcdcca702638e704abed49.zip | |
mm: mark page accessed before we write_end()
In testing a backport of the write_begin/write_end AOPs, a 10% re-read
regression was noticed when running iozone. This regression was
introduced because the old AOPs would always do a mark_page_accessed(page)
after the commit_write, but when the new AOPs where introduced, the only
place this was kept was in pagecache_write_end().
This patch does the same thing in the generic case as what is done in
pagecache_write_end(), which is just to mark the page accessed before we
do write_end().
Signed-off-by: Josef Bacik <jbacik@redhat.com>
Acked-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 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 22396713feb9..ccea3b665c12 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2272,6 +2272,7 @@ again: pagefault_enable(); flush_dcache_page(page); + mark_page_accessed(page); status = a_ops->write_end(file, mapping, pos, bytes, copied, page, fsdata); if (unlikely(status < 0)) |