The patch titled
Subject: mm: compaction: use synchronous compaction for /proc/sys/vm/compact_memory
has been removed from the -mm tree. Its filename was
mm-compaction-use-synchronous-compaction-for-proc-sys-vm-compact_memory.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Mel Gorman <mgorman@xxxxxxx>
Subject: mm: compaction: use synchronous compaction for /proc/sys/vm/compact_memory
When asynchronous compaction was introduced, the
/proc/sys/vm/compact_memory handler should have been updated to always use
synchronous compaction. This did not happen so this patch addresses it.
The assumption is if a user writes to /proc/sys/vm/compact_memory, they
are willing for that process to stall.
Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
Reviewed-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Andy Isaacson <adi@xxxxxxxxxxxxx>
Cc: Nai Xia <nai.xia@xxxxxxxxx>
Cc: Johannes Weiner <jweiner@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/compaction.c~mm-compaction-use-synchronous-compaction-for-proc-sys-vm-compact_memory mm/compaction.c
--- a/mm/compaction.c~mm-compaction-use-synchronous-compaction-for-proc-sys-vm-compact_memory
+++ a/mm/compaction.c
@@ -668,6 +668,7 @@ static int compact_node(int nid)
.nr_freepages = 0,
.nr_migratepages = 0,
.order = -1,
+ .sync = true,
};
zone = &pgdat->node_zones[zoneid];
_
Patches currently in -mm which might be from mgorman@xxxxxxx are
origin.patch
mm-fix-null-ptr-dereference-in-__count_immobile_pages.patch
mm-__count_immobile_pages-make-sure-the-node-is-online.patch
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