Subject: + mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction.patch added to -mm tree
To: rientjes@xxxxxxxxxx,mgorman@xxxxxxx,riel@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 23 Jan 2014 12:55:27 -0800
The patch titled
Subject: mm, compaction: ignore pageblock skip when manually invoking compaction
has been added to the -mm tree. Its filename is
mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction.patch
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------------------------------------------------------
From: David Rientjes <rientjes@xxxxxxxxxx>
Subject: mm, compaction: ignore pageblock skip when manually invoking compaction
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>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/compaction.c~mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction mm/compaction.c
--- a/mm/compaction.c~mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction
+++ a/mm/compaction.c
@@ -1180,6 +1180,7 @@ 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 -mm which might be from rientjes@xxxxxxxxxx are
origin.patch
mm-remove-bug_on-from-mlock_vma_page.patch
arch-x86-mm-sratc-skip-numa_no_node-while-parsing-slit.patch
mm-page_alloc-allow-__gfp_nofail-to-allocate-below-watermarks-after-reclaim.patch
fs-proc-pagec-add-pageanon-check-to-surely-detect-thp.patch
mm-prevent-setting-of-a-value-less-than-0-to-min_free_kbytes.patch
memcg-do-not-hang-on-oom-when-killed-by-userspace-oom-access-to-memory-reserves.patch
mm-nobootmem-free_all_bootmem-again-fix.patch
mm-nobootmem-free_all_bootmem-again-fix-fix.patch
mm-show-message-when-updating-min_free_kbytes-in-thp.patch
mm-oom-prefer-thread-group-leaders-for-display-purposes.patch
mm-oom-prefer-thread-group-leaders-for-display-purposes-fix.patch
mm-compaction-ignore-pageblock-skip-when-manually-invoking-compaction.patch
uapi-convert-u64-to-__u64-in-exported-headers.patch
checkpatch-add-warning-of-future-__gfp_nofail-use.patch
linux-next.patch
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