Re: [PATCH 1/6] mm/compaction: split freepages without holding the zone lock

2016-05-11 Thread Joonsoo Kim
On Tue, May 10, 2016 at 04:56:45PM +0200, Vlastimil Babka wrote: > On 05/03/2016 07:22 AM, js1...@gmail.com wrote: > > From: Joonsoo Kim > > > > We don't need to split freepages with holding the zone lock. It will cause > > more contention on zone lock so not desirable. > > Fair enough, I just w

Re: [PATCH 1/6] mm/compaction: split freepages without holding the zone lock

2016-05-10 Thread Vlastimil Babka
On 05/03/2016 07:22 AM, js1...@gmail.com wrote: > From: Joonsoo Kim > > We don't need to split freepages with holding the zone lock. It will cause > more contention on zone lock so not desirable. Fair enough, I just worry about the same thing as Hugh pointed out recently [1] in that it increases

[PATCH 1/6] mm/compaction: split freepages without holding the zone lock

2016-05-02 Thread js1304
From: Joonsoo Kim We don't need to split freepages with holding the zone lock. It will cause more contention on zone lock so not desirable. Signed-off-by: Joonsoo Kim --- include/linux/mm.h | 1 - mm/compaction.c| 42 ++ mm/page_alloc.c| 27