summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/md/dm-raid1.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 4d6bc101962e..62d594889ac3 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -145,6 +145,8 @@ struct dm_raid1_read_record {
struct dm_bio_details details;
};
+static struct kmem_cache *_dm_raid1_read_record_cache;
+
/*
* Every mirror should look like this one.
*/
@@ -764,9 +766,9 @@ static struct mirror_set *alloc_context(unsigned int nr_mirrors,
atomic_set(&ms->suspend, 0);
atomic_set(&ms->default_mirror, DEFAULT_MIRROR);
- len = sizeof(struct dm_raid1_read_record);
- ms->read_record_pool = mempool_create_kmalloc_pool(MIN_READ_RECORDS,
- len);
+ ms->read_record_pool = mempool_create_slab_pool(MIN_READ_RECORDS,
+ _dm_raid1_read_record_cache);
+
if (!ms->read_record_pool) {
ti->error = "Error creating mirror read_record_pool";
kfree(ms);
@@ -1279,16 +1281,31 @@ static int __init dm_mirror_init(void)
{
int r;
+ _dm_raid1_read_record_cache = KMEM_CACHE(dm_raid1_read_record, 0);
+ if (!_dm_raid1_read_record_cache) {
+ DMERR("Can't allocate dm_raid1_read_record cache");
+ r = -ENOMEM;
+ goto bad_cache;
+ }
+
r = dm_register_target(&mirror_target);
- if (r < 0)
+ if (r < 0) {
DMERR("Failed to register mirror target");
+ goto bad_target;
+ }
+
+ return 0;
+bad_target:
+ kmem_cache_destroy(_dm_raid1_read_record_cache);
+bad_cache:
return r;
}
static void __exit dm_mirror_exit(void)
{
dm_unregister_target(&mirror_target);
+ kmem_cache_destroy(_dm_raid1_read_record_cache);
}
/* Module hooks */