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mm: mark page accessed before we write_end()

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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>
This commit is contained in:
Josef Bacik 2009-07-05 12:08:18 -07:00 committed by Linus Torvalds
parent a65e7bfcd7
commit c8236db9cd
1 changed files with 1 additions and 0 deletions
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1
mm/filemap.c
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@ -2272,6 +2272,7 @@ static ssize_t generic_perform_write(struct file *file,
pagefault_enable(); pagefault_enable();
flush_dcache_page(page); flush_dcache_page(page);
mark_page_accessed(page);
status = a_ops->write_end(file, mapping, pos, bytes, copied, status = a_ops->write_end(file, mapping, pos, bytes, copied,
page, fsdata); page, fsdata);
if (unlikely(status < 0)) if (unlikely(status < 0))