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authorJosef Bacik <josef@redhat.com>2009-07-05 12:08:18 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2009-07-30 14:40:13 -0700
commitb8fde9988b9d0934af55dd2269dafec15f5f6302 (patch)
tree39c3764069609e0f9a1da232e25770e1e3276c74
parent4752849e0a4b09acb68b029b01d8eb2250e92f6c (diff)
downloadlinux-linaro-stable-b8fde9988b9d0934af55dd2269dafec15f5f6302.tar.gz
mm: mark page accessed before we write_end()
commit c8236db9cd7aa492dcfcdcca702638e704abed49 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--mm/filemap.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 1b60f30cebfa..0b20d1f74ffc 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2249,6 +2249,7 @@ 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))