Messages in this thread Patch in this message | | | From | Weijie Yang <> | Subject | [PATCH v3 3/3] mm/zswap: avoid unnecessary page scanning | Date | Mon, 23 Sep 2013 16:21:49 +0800 |
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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@samsung.com> Reviewed-by: Bob Liu <bob.liu@oracle.com> Cc: Minchan Kim <minchan@kernel.org> Cc: stable@vger.kernel.org Acked-by: Seth Jennings <sjenning@linux.vnet.ibm.com> --- mm/zswap.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/mm/zswap.c b/mm/zswap.c index 1be7b90..cc40e6a 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); -- 1.7.10.4
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