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Diffstat (limited to 'drivers/md/dm-stats.c')
-rw-r--r--drivers/md/dm-stats.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c
index c21a19ab73f7..db2d997a6c18 100644
--- a/drivers/md/dm-stats.c
+++ b/drivers/md/dm-stats.c
@@ -188,7 +188,7 @@ static int dm_stat_in_flight(struct dm_stat_shared *shared)
atomic_read(&shared->in_flight[WRITE]);
}
-void dm_stats_init(struct dm_stats *stats)
+int dm_stats_init(struct dm_stats *stats)
{
int cpu;
struct dm_stats_last_position *last;
@@ -197,11 +197,16 @@ void dm_stats_init(struct dm_stats *stats)
INIT_LIST_HEAD(&stats->list);
stats->precise_timestamps = false;
stats->last = alloc_percpu(struct dm_stats_last_position);
+ if (!stats->last)
+ return -ENOMEM;
+
for_each_possible_cpu(cpu) {
last = per_cpu_ptr(stats->last, cpu);
last->last_sector = (sector_t)ULLONG_MAX;
last->last_rw = UINT_MAX;
}
+
+ return 0;
}
void dm_stats_cleanup(struct dm_stats *stats)