diff options
| author | Mel Gorman <mgorman@techsingularity.net> | 2016-05-20 03:14:13 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 05:12:14 +0300 |
| commit | 93ea9964d14ad583492ffb9ab7543f015876aaf2 (patch) | |
| tree | 1225c8ae0c5d85b40e386d860abcd24f44664633 /mm | |
| parent | c33d6c06f60f710f0305ae792773e1c2560e1e51 (diff) | |
| download | linux-93ea9964d14ad583492ffb9ab7543f015876aaf2.tar.xz | |
mm, page_alloc: remove field from alloc_context
The classzone_idx can be inferred from preferred_zoneref so remove the
unnecessary field and save stack space.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/compaction.c | 4 | ||||
| -rw-r--r-- | mm/internal.h | 3 | ||||
| -rw-r--r-- | mm/page_alloc.c | 8 |
3 files changed, 7 insertions, 8 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index 8f339ca25621..eda3c2244f30 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1602,7 +1602,7 @@ unsigned long try_to_compact_pages(gfp_t gfp_mask, unsigned int order, status = compact_zone_order(zone, order, gfp_mask, mode, &zone_contended, alloc_flags, - ac->classzone_idx); + ac_classzone_idx(ac)); rc = max(status, rc); /* * It takes at least one zone that wasn't lock contended @@ -1612,7 +1612,7 @@ unsigned long try_to_compact_pages(gfp_t gfp_mask, unsigned int order, /* If a normal allocation would succeed, stop compacting */ if (zone_watermark_ok(zone, order, low_wmark_pages(zone), - ac->classzone_idx, alloc_flags)) { + ac_classzone_idx(ac), alloc_flags)) { /* * We think the allocation will succeed in this zone, * but it is not certain, hence the false. The caller diff --git a/mm/internal.h b/mm/internal.h index d1ddd71c1bbf..3ac544f1963f 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -103,12 +103,13 @@ struct alloc_context { struct zonelist *zonelist; nodemask_t *nodemask; struct zoneref *preferred_zoneref; - int classzone_idx; int migratetype; enum zone_type high_zoneidx; bool spread_dirty_pages; }; +#define ac_classzone_idx(ac) zonelist_zone_idx(ac->preferred_zoneref) + /* * Locate the struct page for both the matching buddy in our * pair (buddy1) and the combined O(n+1) page they form (page). diff --git a/mm/page_alloc.c b/mm/page_alloc.c index dba8cfd0b2d6..9da66e792e17 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2771,7 +2771,7 @@ zonelist_scan: mark = zone->watermark[alloc_flags & ALLOC_WMARK_MASK]; if (!zone_watermark_fast(zone, order, mark, - ac->classzone_idx, alloc_flags)) { + ac_classzone_idx(ac), alloc_flags)) { int ret; /* Checked here to keep the fast path fast */ @@ -2794,7 +2794,7 @@ zonelist_scan: default: /* did we reclaim enough */ if (zone_watermark_ok(zone, order, mark, - ac->classzone_idx, alloc_flags)) + ac_classzone_idx(ac), alloc_flags)) goto try_this_zone; continue; @@ -3114,7 +3114,7 @@ static void wake_all_kswapds(unsigned int order, const struct alloc_context *ac) for_each_zone_zonelist_nodemask(zone, z, ac->zonelist, ac->high_zoneidx, ac->nodemask) - wakeup_kswapd(zone, order, zonelist_zone_idx(ac->preferred_zoneref)); + wakeup_kswapd(zone, order, ac_classzone_idx(ac)); } static inline unsigned int @@ -3422,8 +3422,6 @@ retry_cpuset: goto no_zone; } - ac.classzone_idx = zonelist_zone_idx(ac.preferred_zoneref); - /* First allocation attempt */ page = get_page_from_freelist(alloc_mask, order, alloc_flags, &ac); if (likely(page)) |