CC: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Tim Blechmann wrote: > the lru_lock of struct mem_group_per_zone is used to avoid preemption > during the __mem_cgroup_stat_add_safe function. > therefore, a raw_spinlock_t should be used. > FYI, this lru_lock no longer exists in -mm tree. The following patch removes that lock: http://marc.info/?l=linux-mm&m=122665814801979&w=2 > Signed-off-by: Tim Blechmann <tim@xxxxxxxxxx> > --- > mm/memcontrol.c | 4 ++-- > 1 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/mm/memcontrol.c b/mm/memcontrol.c > index 517f945..8661732 100644 > --- a/mm/memcontrol.c > +++ b/mm/memcontrol.c > @@ -95,9 +95,9 @@ enum mem_cgroup_zstat_index { > > struct mem_cgroup_per_zone { > /* > - * spin_lock to protect the per cgroup LRU > + * raw_spin_lock to protect the per cgroup LRU > */ > - spinlock_t lru_lock; > + raw_spinlock_t lru_lock; > struct list_head active_list; > struct list_head inactive_list; > unsigned long count[NR_MEM_CGROUP_ZSTAT]; -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
