Subject: + mm-zswap-avoid-unnecessary-page-scanning.patch added to -mm tree
To: weijie.yang@xxxxxxxxxxx,bob.liu@xxxxxxxxxx,minchan@xxxxxxxxxx,sjenning@xxxxxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 10 Oct 2013 12:52:45 -0700
The patch titled
Subject: mm/zswap: avoid unnecessary page scanning
has been added to the -mm tree. Its filename is
mm-zswap-avoid-unnecessary-page-scanning.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-zswap-avoid-unnecessary-page-scanning.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-zswap-avoid-unnecessary-page-scanning.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Weijie Yang <weijie.yang@xxxxxxxxxxx>
Subject: mm/zswap: avoid unnecessary page scanning
Add SetPageReclaim() before __swap_writepage() so that page can be moved
to the tail of the inactive list, which can avoid unnecessary page
scanning as this page was reclaimed by swap subsystem before.
Signed-off-by: Weijie Yang <weijie.yang@xxxxxxxxxxx>
Reviewed-by: Bob Liu <bob.liu@xxxxxxxxxx>
Reviewed-by: Minchan Kim <minchan@xxxxxxxxxx>
Acked-by: Seth Jennings <sjenning@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zswap.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN mm/zswap.c~mm-zswap-avoid-unnecessary-page-scanning mm/zswap.c
--- a/mm/zswap.c~mm-zswap-avoid-unnecessary-page-scanning
+++ a/mm/zswap.c
@@ -577,6 +577,9 @@ static int zswap_writeback_entry(struct
SetPageUptodate(page);
}
+ /* move it to the tail of the inactive list after end_writeback */
+ SetPageReclaim(page);
+
/* start writeback */
__swap_writepage(page, &wbc, end_swap_bio_write);
page_cache_release(page);
_
Patches currently in -mm which might be from weijie.yang@xxxxxxxxxxx are
mm-zswap-bugfix-memory-leak-when-re-swapon.patch
mm-zswap-bugfix-memory-leak-when-invalidate-and-reclaim-occur-concurrently.patch
mm-zswap-avoid-unnecessary-page-scanning.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
