This is a note to let you know that I've just added the patch titled
mm, compaction: ignore pageblock skip when manually invoking compaction
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 91ca9186484809c57303b33778d841cc28f696ed Mon Sep 17 00:00:00 2001
From: David Rientjes <rientjes@xxxxxxxxxx>
Date: Thu, 3 Apr 2014 14:47:23 -0700
Subject: mm, compaction: ignore pageblock skip when manually invoking compaction
From: David Rientjes <rientjes@xxxxxxxxxx>
commit 91ca9186484809c57303b33778d841cc28f696ed upstream.
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 <rientjes@xxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1193,6 +1193,7 @@ static void compact_node(int nid)
struct compact_control cc = {
.order = -1,
.sync = true,
+ .ignore_skip_hint = true,
};
__compact_pgdat(NODE_DATA(nid), &cc);
Patches currently in stable-queue which might be from rientjes@xxxxxxxxxx are
queue-3.14/mm-compaction-avoid-isolating-pinned-pages.patch
queue-3.14/mm-readahead.c-fix-readahead-failure-for-memoryless-numa-nodes-and-limit-readahead-pages.patch
queue-3.14/mm-exclude-memoryless-nodes-from-zone_reclaim.patch
queue-3.14/mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction.patch
queue-3.14/mm-compaction-determine-isolation-mode-only-once.patch
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