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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2009-12-14 17:59:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 08:53:18 -0800
commit4f0ddfdffc8bef3a5eb9154734d68a6053194948 (patch)
treeae86c67cbb9290b8f090a13022736c2b862f3630 /mm/vmscan.c
parent7b51755c3b38483b574d363d5ee587283c3f7999 (diff)
downloadlinux-4f0ddfdffc8bef3a5eb9154734d68a6053194948.tar.bz2
vmscan: zone_reclaim() don't use insane swap_cluster_max
In old days, we didn't have sc.nr_to_reclaim and it brought sc.swap_cluster_max misuse. huge sc.swap_cluster_max might makes unnecessary OOM risk and no performance benefit. Now, we can stop its insane thing. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
-rw-r--r--mm/vmscan.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 63bd521bb229..d55d106ad179 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2539,8 +2539,7 @@ static int __zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
.may_writepage = !!(zone_reclaim_mode & RECLAIM_WRITE),
.may_unmap = !!(zone_reclaim_mode & RECLAIM_SWAP),
.may_swap = 1,
- .swap_cluster_max = max_t(unsigned long, nr_pages,
- SWAP_CLUSTER_MAX),
+ .swap_cluster_max = SWAP_CLUSTER_MAX,
.nr_to_reclaim = max_t(unsigned long, nr_pages,
SWAP_CLUSTER_MAX),
.gfp_mask = gfp_mask,