Re: [Patch v4 3/8] memory-hotplug: fix NR_FREE_PAGES mismatch

2012-10-31 Thread Wen Congyang
At 10/31/2012 09:41 PM, Jianguo Wu Wrote: > On 2012/10/31 19:23, Wen Congyang wrote: >> NR_FREE_PAGES will be wrong after offlining pages. We add/dec >> NR_FREE_PAGES like this now: >> >> 1. move all pages in buddy system to MIGRATE_ISOLATE, and dec NR_FREE_PAGES >> >> 2. don't add NR_FREE_PAGES w

Re: [Patch v4 3/8] memory-hotplug: fix NR_FREE_PAGES mismatch

2012-10-31 Thread Jianguo Wu
On 2012/10/31 19:23, Wen Congyang wrote: > NR_FREE_PAGES will be wrong after offlining pages. We add/dec > NR_FREE_PAGES like this now: > > 1. move all pages in buddy system to MIGRATE_ISOLATE, and dec NR_FREE_PAGES > > 2. don't add NR_FREE_PAGES when it is freed and the migratetype is >MIGR

[Patch v4 3/8] memory-hotplug: fix NR_FREE_PAGES mismatch

2012-10-31 Thread Wen Congyang
NR_FREE_PAGES will be wrong after offlining pages. We add/dec NR_FREE_PAGES like this now: 1. move all pages in buddy system to MIGRATE_ISOLATE, and dec NR_FREE_PAGES 2. don't add NR_FREE_PAGES when it is freed and the migratetype is MIGRATE_ISOLATE 3. dec NR_FREE_PAGES when offlining isolat