1 files changed, 10 insertions, 27 deletions

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 49913804e8dd..effd89489506 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -624,29 +624,12 @@ static inline void cfq_blkiocg_update_dispatch_stats(struct blkio_group *blkg,
                         struct blkio_policy_type *pol, uint64_t bytes,
                         bool direction, bool sync)
 {
+        struct blkio_group_stats *stats = &blkg->pd[pol->plid]->stats;
         int rw = (direction ? REQ_WRITE : 0) | (sync ? REQ_SYNC : 0);
-        struct blkg_policy_data *pd = blkg->pd[pol->plid];
-        struct blkio_group_stats_cpu *stats_cpu;
-        unsigned long flags;
 
-        /* If per cpu stats are not allocated yet, don't do any accounting. */
-        if (pd->stats_cpu == NULL)
-                return;
-
-        /*
-         * Disabling interrupts to provide mutual exclusion between two
-         * writes on same cpu. It probably is not needed for 64bit. Not
-         * optimizing that case yet.
-         */
-        local_irq_save(flags);
-
-        stats_cpu = this_cpu_ptr(pd->stats_cpu);
-
-        blkg_stat_add(&stats_cpu->sectors, bytes >> 9);
-        blkg_rwstat_add(&stats_cpu->serviced, rw, 1);
-        blkg_rwstat_add(&stats_cpu->service_bytes, rw, bytes);
-
-        local_irq_restore(flags);
+        blkg_stat_add(&stats->sectors, bytes >> 9);
+        blkg_rwstat_add(&stats->serviced, rw, 1);
+        blkg_rwstat_add(&stats->service_bytes, rw, bytes);
 }
 
 static inline void cfq_blkiocg_update_completion_stats(struct blkio_group *blkg,
@@ -1520,20 +1503,20 @@ static struct cftype cfq_blkcg_files[] = {
         {
                 .name = "sectors",
                 .private = BLKCG_STAT_PRIV(BLKIO_POLICY_PROP,
-                                offsetof(struct blkio_group_stats_cpu, sectors)),
-                .read_seq_string = blkcg_print_cpu_stat,
+                                offsetof(struct blkio_group_stats, sectors)),
+                .read_seq_string = blkcg_print_stat,
         },
         {
                 .name = "io_service_bytes",
                 .private = BLKCG_STAT_PRIV(BLKIO_POLICY_PROP,
-                                offsetof(struct blkio_group_stats_cpu, service_bytes)),
-                .read_seq_string = blkcg_print_cpu_rwstat,
+                                offsetof(struct blkio_group_stats, service_bytes)),
+                .read_seq_string = blkcg_print_rwstat,
         },
         {
                 .name = "io_serviced",
                 .private = BLKCG_STAT_PRIV(BLKIO_POLICY_PROP,
-                                offsetof(struct blkio_group_stats_cpu, serviced)),
-                .read_seq_string = blkcg_print_cpu_rwstat,
+                                offsetof(struct blkio_group_stats, serviced)),
+                .read_seq_string = blkcg_print_rwstat,
         },
         {
                 .name = "io_service_time",