diff options
| -rw-r--r-- | block/blk-cgroup.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index f0b5c9c41cde..dce1548a7a0c 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -970,6 +970,7 @@ static void __blkcg_rstat_flush(struct blkcg *blkcg, int cpu) struct llist_head *lhead = per_cpu_ptr(blkcg->lhead, cpu); struct llist_node *lnode; struct blkg_iostat_set *bisc, *next_bisc; + unsigned long flags; rcu_read_lock(); @@ -983,7 +984,7 @@ static void __blkcg_rstat_flush(struct blkcg *blkcg, int cpu) * When flushing from cgroup, cgroup_rstat_lock is always held, so * this lock won't cause contention most of time. */ - raw_spin_lock(&blkg_stat_lock); + raw_spin_lock_irqsave(&blkg_stat_lock, flags); /* * Iterate only the iostat_cpu's queued in the lockless list. @@ -1009,7 +1010,7 @@ static void __blkcg_rstat_flush(struct blkcg *blkcg, int cpu) blkcg_iostat_update(parent, &blkg->iostat.cur, &blkg->iostat.last); } - raw_spin_unlock(&blkg_stat_lock); + raw_spin_unlock_irqrestore(&blkg_stat_lock, flags); out: rcu_read_unlock(); } |