diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm.c | 4 | ||||
| -rw-r--r-- | drivers/md/raid5.c | 7 | ||||
| -rw-r--r-- | drivers/md/raid5.h | 1 |
3 files changed, 8 insertions, 4 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 4720f68f817e..b1eff426c2fc 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1648,14 +1648,14 @@ static void dm_request_fn(struct request_queue *q) if (map_request(ti, clone, md)) goto requeued; - BUG_ON(!irqs_disabled()); + BUG_ON_NONRT(!irqs_disabled()); spin_lock(q->queue_lock); } goto out; requeued: - BUG_ON(!irqs_disabled()); + BUG_ON_NONRT(!irqs_disabled()); spin_lock(q->queue_lock); delay_and_out: diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 858fdbb7eb07..c2401e86b271 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -1245,8 +1245,9 @@ static void __raid_run_ops(struct stripe_head *sh, unsigned long ops_request) struct raid5_percpu *percpu; unsigned long cpu; - cpu = get_cpu(); + cpu = get_cpu_light(); percpu = per_cpu_ptr(conf->percpu, cpu); + spin_lock(&percpu->lock); if (test_bit(STRIPE_OP_BIOFILL, &ops_request)) { ops_run_biofill(sh); overlap_clear++; @@ -1298,7 +1299,8 @@ static void __raid_run_ops(struct stripe_head *sh, unsigned long ops_request) if (test_and_clear_bit(R5_Overlap, &dev->flags)) wake_up(&sh->raid_conf->wait_for_overlap); } - put_cpu(); + spin_unlock(&percpu->lock); + put_cpu_light(); } #ifdef CONFIG_MULTICORE_RAID456 @@ -4539,6 +4541,7 @@ static int raid5_alloc_percpu(struct r5conf *conf) break; } per_cpu_ptr(conf->percpu, cpu)->scribble = scribble; + spin_lock_init(&per_cpu_ptr(conf->percpu, cpu)->lock); } #ifdef CONFIG_HOTPLUG_CPU conf->cpu_notify.notifier_call = raid456_cpu_notify; diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index e10c5531f9c5..010a96916bc2 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -405,6 +405,7 @@ struct r5conf { int recovery_disabled; /* per cpu variables */ struct raid5_percpu { + spinlock_t lock; /* Protection for -RT */ struct page *spare_page; /* Used when checking P/Q in raid6 */ void *scribble; /* space for constructing buffer * lists and performing address |