Re: [PATCH 7/7] mm/page_alloc: don't merge MIGRATE_(CMA|ISOLATE) pages on buddy

2014-01-09 Thread Michal Nazarewicz
On Thu, Jan 09 2014, Joonsoo Kim wrote: > If (MAX_ORDER-1) is greater than pageblock order, there is a possibility > to merge different migratetype pages and to be linked in unintended > freelist. > > While I test CMA, CMA pages are merged and linked into MOVABLE freelist > by above issue and then,

[PATCH 7/7] mm/page_alloc: don't merge MIGRATE_(CMA|ISOLATE) pages on buddy

2014-01-08 Thread Joonsoo Kim
If (MAX_ORDER-1) is greater than pageblock order, there is a possibility to merge different migratetype pages and to be linked in unintended freelist. While I test CMA, CMA pages are merged and linked into MOVABLE freelist by above issue and then, the pages change their migratetype to UNMOVABLE by