From: David Rientjes <rient...@google.com>
The cached pageblock hint should be ignored when triggering compaction
through /proc/sys/vm/compact_memory so all eligible memory is isolated.
Manually invoking compaction is known to be expensive, there's no need
to skip pageblocks based on heuristics (mainly for debugging).
Signed-off-by: David Rientjes <rient...@google.com>
Acked-by: Mel Gorman <mgor...@suse.de>
Cc: Rik van Riel <r...@redhat.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
(cherry picked from commit 91ca9186484809c57303b33778d841cc28f696ed)
Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
---
mm/compaction.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/compaction.c b/mm/compaction.c
index 9f2abe03d1aa..ee0c1e4aecd7 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1194,6 +1194,7 @@ static void compact_node(int nid)
struct compact_control cc = {
.order = -1,
.sync = true,
+ .ignore_skip_hint = true,
};
__compact_pgdat(NODE_DATA(nid), &cc);
--
2.13.6
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