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mm, compaction: pass gfp mask to compact_control 

struct compact_control currently converts the gfp mask to a migratetype,
but we need the entire gfp mask in a follow-up patch.

Pass the entire gfp mask as part of struct compact_control.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Rientjes 2014-10-09 15:27:27 -07:00 committed by Linus Torvalds
parent 43e7a34d26
commit 6d7ce55940
2 changed files with 8 additions and 6 deletions
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12
mm/compaction.c
View File

@ -1032,8 +1032,8 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone,
return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE;
}
static int compact_finished(struct zone *zone,
struct compact_control *cc)
static int compact_finished(struct zone *zone, struct compact_control *cc,
const int migratetype)
{
unsigned int order;
unsigned long watermark;
@ -1079,7 +1079,7 @@ static int compact_finished(struct zone *zone,
struct free_area *area = &zone->free_area[order];
/* Job done if page is free of the right migratetype */
if (!list_empty(&area->free_list[cc->migratetype]))
if (!list_empty(&area->free_list[migratetype]))
return COMPACT_PARTIAL;
/* Job done if allocation would set block type */
@ -1145,6 +1145,7 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
int ret;
unsigned long start_pfn = zone->zone_start_pfn;
unsigned long end_pfn = zone_end_pfn(zone);
const int migratetype = gfpflags_to_migratetype(cc->gfp_mask);
const bool sync = cc->mode != MIGRATE_ASYNC;
ret = compaction_suitable(zone, cc->order);
@ -1187,7 +1188,8 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
migrate_prep_local();
while ((ret = compact_finished(zone, cc)) == COMPACT_CONTINUE) {
while ((ret = compact_finished(zone, cc, migratetype)) ==
COMPACT_CONTINUE) {
int err;
switch (isolate_migratepages(zone, cc)) {
@ -1242,7 +1244,7 @@ static unsigned long compact_zone_order(struct zone *zone, int order,
.nr_freepages = 0,
.nr_migratepages = 0,
.order = order,
.migratetype = gfpflags_to_migratetype(gfp_mask),
.gfp_mask = gfp_mask,
.zone = zone,
.mode = mode,
};

2
mm/internal.h
View File

@ -142,7 +142,7 @@ struct compact_control {
bool finished_update_migrate;
int order; /* order a direct compactor needs */
int migratetype; /* MOVABLE, RECLAIMABLE etc */
const gfp_t gfp_mask; /* gfp mask of a direct compactor */
struct zone *zone;
int contended; /* Signal need_sched() or lock
* contention detected during