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| author | Weijie Yang <weijie.yang@samsung.com> | 2013-11-12 15:07:52 -0800 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2014-05-15 07:28:10 +0200 |
| commit | 05179493a7f519ce6cbfdf194a9575e9bedcd702 (patch) | |
| tree | f8fc959509c3516306ee0fcad217e69ebbdc8cf1 | |
| parent | cc054bb154ebfd657baa9ff9a759f1b111e7f8e2 (diff) | |
| download | linux-3.10-05179493a7f519ce6cbfdf194a9575e9bedcd702.tar.gz linux-3.10-05179493a7f519ce6cbfdf194a9575e9bedcd702.tar.bz2 linux-3.10-05179493a7f519ce6cbfdf194a9575e9bedcd702.zip | |
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.
Change-Id: If1ed52e3161c332d9f1f6fdd8851e97b5d3b4271
Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Acked-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/zswap.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/zswap.c b/mm/zswap.c index d93510c6aa2..001474c1a59 100644 --- a/mm/zswap.c +++ b/mm/zswap.c @@ -556,6 +556,9 @@ static int zswap_writeback_entry(struct zbud_pool *pool, unsigned long handle) 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); |