diff options
Diffstat (limited to 'drivers/md/dm-raid1.c')
| -rw-r--r-- | drivers/md/dm-raid1.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 86328251375..6b0fc167092 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -122,7 +122,7 @@ static inline sector_t region_to_sector(struct region_hash *rh, region_t region) /* FIXME move this */ static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw); -static void *region_alloc(unsigned int __nocast gfp_mask, void *pool_data) +static void *region_alloc(gfp_t gfp_mask, void *pool_data) { return kmalloc(sizeof(struct region), gfp_mask); } @@ -376,16 +376,18 @@ static void rh_inc(struct region_hash *rh, region_t region) read_lock(&rh->hash_lock); reg = __rh_find(rh, region); + spin_lock_irq(&rh->region_lock); atomic_inc(®->pending); - spin_lock_irq(&rh->region_lock); if (reg->state == RH_CLEAN) { - rh->log->type->mark_region(rh->log, reg->key); - reg->state = RH_DIRTY; list_del_init(®->list); /* take off the clean list */ - } - spin_unlock_irq(&rh->region_lock); + spin_unlock_irq(&rh->region_lock); + + rh->log->type->mark_region(rh->log, reg->key); + } else + spin_unlock_irq(&rh->region_lock); + read_unlock(&rh->hash_lock); } @@ -408,21 +410,17 @@ static void rh_dec(struct region_hash *rh, region_t region) reg = __rh_lookup(rh, region); read_unlock(&rh->hash_lock); + spin_lock_irqsave(&rh->region_lock, flags); if (atomic_dec_and_test(®->pending)) { - spin_lock_irqsave(&rh->region_lock, flags); - if (atomic_read(®->pending)) { /* check race */ - spin_unlock_irqrestore(&rh->region_lock, flags); - return; - } if (reg->state == RH_RECOVERING) { list_add_tail(®->list, &rh->quiesced_regions); } else { reg->state = RH_CLEAN; list_add(®->list, &rh->clean_regions); } - spin_unlock_irqrestore(&rh->region_lock, flags); should_wake = 1; } + spin_unlock_irqrestore(&rh->region_lock, flags); if (should_wake) wake(); |