From 5bad7a1da06e4766617ca2ab01fe4cd6a6b814e0 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 8 Apr 2015 09:44:27 +1000 Subject: [PATCH] document-interaction-between-compaction-and-the-unevictable-lru-fix identify /proc/sys/vm/compact_unevictable directly Cc: Christoph Lameter Cc: David Rientjes Cc: Eric B Munson Cc: Mel Gorman Cc: Michal Hocko Cc: Peter Zijlstra Cc: Rik van Riel Cc: Thomas Gleixner Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- Documentation/vm/unevictable-lru.txt | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/Documentation/vm/unevictable-lru.txt b/Documentation/vm/unevictable-lru.txt index 018be35c3460..3be0bfc4738d 100644 --- a/Documentation/vm/unevictable-lru.txt +++ b/Documentation/vm/unevictable-lru.txt @@ -455,10 +455,11 @@ COMPACTING MLOCKED PAGES ------------------------ The unevictable LRU can be scanned for compactable regions and the default -behavior is to do so. There is a sysctl to control this behavior (see -Documentation/sysctl/vm.txt). Once scanning of the unevictable LRU is -enabled, the work of compaction is mostly handled by the page migration code -and the same work flow as described in MIGRATING MLOCKED PAGES will apply. +behavior is to do so. /proc/sys/vm/compact_unevictable_allowed controls +this behavior (see Documentation/sysctl/vm.txt). Once scanning of the +unevictable LRU is enabled, the work of compaction is mostly handled by +the page migration code and the same work flow as described in MIGRATING +MLOCKED PAGES will apply. mmap(MAP_LOCKED) SYSTEM CALL HANDLING -- 2.39.5