summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorMel Gorman <mgorman@techsingularity.net>2021-06-29 05:42:21 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 20:53:54 +0300
commitc49c2c47dab6b8d45022b3fabf0642a0e62e3109 (patch)
tree4a5929d0291298c04a6b8af7958ce77bbca64bb9 /include
parent3b12e7e97938424de2bb1b95ba0bd6a49bad39f9 (diff)
downloadlinux-c49c2c47dab6b8d45022b3fabf0642a0e62e3109.tar.xz
mm/page_alloc: limit the number of pages on PCP lists when reclaim is active
When kswapd is active then direct reclaim is potentially active. In either case, it is possible that a zone would be balanced if pages were not trapped on PCP lists. Instead of draining remote pages, simply limit the size of the PCP lists while kswapd is active. Link: https://lkml.kernel.org/r/20210525080119.5455-6-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mmzone.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 0a86b2890a16..b2f40d64bc4b 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -647,6 +647,7 @@ enum zone_flags {
ZONE_BOOSTED_WATERMARK, /* zone recently boosted watermarks.
* Cleared when kswapd is woken.
*/
+ ZONE_RECLAIM_ACTIVE, /* kswapd may be scanning the zone. */
};
static inline unsigned long zone_managed_pages(struct zone *zone)