The patch titled
Subject: mm: compaction: make compact_control order signed
has been removed from the -mm tree. Its filename was
mm-compaction-make-compact_control-order-signed.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: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Subject: mm: compaction: make compact_control order signed
"order" is -1 when compacting via /proc/sys/vm/compact_memory. Making
it unsigned causes a bug in __compact_pgdat() when we test:
if (cc->order < 0 || !compaction_deferred(zone, cc->order))
compact_zone(zone, cc);
[akpm@xxxxxxxxxxxxxxxxxxxx: make __compact_pgdat()'s comparison match other code sites]
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/compaction.c~mm-compaction-make-compact_control-order-signed mm/compaction.c
--- a/mm/compaction.c~mm-compaction-make-compact_control-order-signed
+++ a/mm/compaction.c
@@ -35,7 +35,7 @@ struct compact_control {
unsigned long migrate_pfn; /* isolate_migratepages search base */
bool sync; /* Synchronous migration */
- unsigned int order; /* order a direct compactor needs */
+ int order; /* order a direct compactor needs */
int migratetype; /* MOVABLE, RECLAIMABLE etc */
struct zone *zone;
};
@@ -692,7 +692,7 @@ static int __compact_pgdat(pg_data_t *pg
INIT_LIST_HEAD(&cc->freepages);
INIT_LIST_HEAD(&cc->migratepages);
- if (cc->order < 0 || !compaction_deferred(zone, cc->order))
+ if (cc->order == -1 || !compaction_deferred(zone, cc->order))
compact_zone(zone, cc);
if (cc->order > 0) {
_
Patches currently in -mm which might be from dan.carpenter@xxxxxxxxxx are
origin.patch
linux-next.patch
thermal-spear13xx-checking-for-null-instead-of-is_err.patch
backlight-lp855x_bl-silence-a-compiler-warning.patch
drivers-leds-leds-tca6507c-cleanup-error-handling-in-tca6507_probe.patch
epoll-remove-unneeded-variable-in-reverse_path_check.patch
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