From de6c60a6c115acaa721cfd499e028a413d1fcbf3 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka Date: Tue, 21 Jan 2014 15:51:07 -0800 Subject: mm: compaction: encapsulate defer reset logic Currently there are several functions to manipulate the deferred compaction state variables. The remaining case where the variables are touched directly is when a successful allocation occurs in direct compaction, or is expected to be successful in the future by kswapd. Here, the lowest order that is expected to fail is updated, and in the case of successful allocation, the deferred status and counter is reset completely. Create a new function compaction_defer_reset() to encapsulate this functionality and make it easier to understand the code. No functional change. Signed-off-by: Vlastimil Babka Acked-by: Mel Gorman Reviewed-by: Rik van Riel Cc: Joonsoo Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'mm/page_alloc.c') diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b230e838883d..84da0e3bc886 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2235,10 +2235,7 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, preferred_zone, migratetype); if (page) { preferred_zone->compact_blockskip_flush = false; - preferred_zone->compact_considered = 0; - preferred_zone->compact_defer_shift = 0; - if (order >= preferred_zone->compact_order_failed) - preferred_zone->compact_order_failed = order + 1; + compaction_defer_reset(preferred_zone, order, true); count_vm_event(COMPACTSUCCESS); return page; } -- cgit v1.2.1