diff options
| -rw-r--r-- | include/linux/compaction.h | 6 | ||||
| -rw-r--r-- | mm/compaction.c | 5 | ||||
| -rw-r--r-- | mm/page_alloc.c | 12 |
3 files changed, 4 insertions, 19 deletions
diff --git a/include/linux/compaction.h b/include/linux/compaction.h index d896765..3238ffa 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -33,8 +33,7 @@ extern int fragmentation_index(struct zone *zone, unsigned int order); extern unsigned long try_to_compact_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *mask, enum migrate_mode mode, int *contended, - int alloc_flags, int classzone_idx, - struct zone **candidate_zone); + int alloc_flags, int classzone_idx); extern void compact_pgdat(pg_data_t *pgdat, int order); extern void reset_isolation_suitable(pg_data_t *pgdat); extern unsigned long compaction_suitable(struct zone *zone, int order, @@ -105,8 +104,7 @@ static inline bool compaction_restarting(struct zone *zone, int order) static inline unsigned long try_to_compact_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *nodemask, enum migrate_mode mode, int *contended, - int alloc_flags, int classzone_idx, - struct zone **candidate_zone) + int alloc_flags, int classzone_idx) { return COMPACT_CONTINUE; } diff --git a/mm/compaction.c b/mm/compaction.c index 1fc6736..75f4c12 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1298,15 +1298,13 @@ int sysctl_extfrag_threshold = 500; * @mode: The migration mode for async, sync light, or sync migration * @contended: Return value that determines if compaction was aborted due to * need_resched() or lock contention - * @candidate_zone: Return the zone where we think allocation should succeed * * This is the main entry point for direct page compaction. */ unsigned long try_to_compact_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *nodemask, enum migrate_mode mode, int *contended, - int alloc_flags, int classzone_idx, - struct zone **candidate_zone) + int alloc_flags, int classzone_idx) { enum zone_type high_zoneidx = gfp_zone(gfp_mask); int may_enter_fs = gfp_mask & __GFP_FS; @@ -1343,7 +1341,6 @@ unsigned long try_to_compact_pages(struct zonelist *zonelist, /* If a normal allocation would succeed, stop compacting */ if (zone_watermark_ok(zone, order, low_wmark_pages(zone), classzone_idx, alloc_flags)) { - *candidate_zone = zone; /* * We think the allocation will succeed in this zone, * but it is not certain, hence the false. The caller diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e32121f..edb0ce1 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2330,7 +2330,6 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, int classzone_idx, int migratetype, enum migrate_mode mode, int *contended_compaction, bool *deferred_compaction) { - struct zone *last_compact_zone = NULL; unsigned long compact_result; struct page *page; @@ -2341,8 +2340,7 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, compact_result = try_to_compact_pages(zonelist, order, gfp_mask, nodemask, mode, contended_compaction, - alloc_flags, classzone_idx, - &last_compact_zone); + alloc_flags, classzone_idx); current->flags &= ~PF_MEMALLOC; switch (compact_result) { @@ -2380,14 +2378,6 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, } /* - * last_compact_zone is where try_to_compact_pages thought allocation - * should succeed, so it did not defer compaction. But here we know - * that it didn't succeed, so we do the defer. - */ - if (last_compact_zone && mode != MIGRATE_ASYNC) - defer_compaction(last_compact_zone, order); - - /* * It's bad if compaction run occurs and fails. The most likely reason * is that pages exist, but not enough to satisfy watermarks. */ |
