On Tue 21-10-14 10:31:19, Vladimir Davydov wrote: > On Mon, Oct 20, 2014 at 08:53:06PM +0200, Michal Hocko wrote: > > On Mon 20-10-14 19:11:29, Vladimir Davydov wrote: > > > The activate_kmem_mutex is used to serialize memcg.kmem.limit updates, > > > but we already serialize them with memcg_limit_mutex so let's remove the > > > former. > > > > > > Signed-off-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> > > > > Is this the case since bd67314586a3 (memcg, slab: simplify > > synchronization scheme)? > > No, it's since Johannes' lockless page counters patch where we have the > memcg_limit_mutex introduced to synchronize concurrent limit updates (mm > commit dc1815408849 "mm: memcontrol: lockless page counters"). Ahh, ok. Thanks for the clarification. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>