dm kcopyd: return client directly and not through a pointer
Return client directly from dm_kcopyd_client_create, not through a
parameter, making it consistent with dm_io_client_create.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 579647f..819e37e 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -637,14 +637,14 @@
/*-----------------------------------------------------------------
* Client setup
*---------------------------------------------------------------*/
-int dm_kcopyd_client_create(struct dm_kcopyd_client **result)
+struct dm_kcopyd_client *dm_kcopyd_client_create(void)
{
int r = -ENOMEM;
struct dm_kcopyd_client *kc;
kc = kmalloc(sizeof(*kc), GFP_KERNEL);
if (!kc)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
spin_lock_init(&kc->job_lock);
INIT_LIST_HEAD(&kc->complete_jobs);
@@ -676,8 +676,7 @@
init_waitqueue_head(&kc->destroyq);
atomic_set(&kc->nr_jobs, 0);
- *result = kc;
- return 0;
+ return kc;
bad_io_client:
client_free_pages(kc);
@@ -688,7 +687,7 @@
bad_slab:
kfree(kc);
- return r;
+ return ERR_PTR(r);
}
EXPORT_SYMBOL(dm_kcopyd_client_create);
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 9defad0..9bfd057 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -1115,9 +1115,11 @@
goto err_destroy_wq;
}
- r = dm_kcopyd_client_create(&ms->kcopyd_client);
- if (r)
+ ms->kcopyd_client = dm_kcopyd_client_create();
+ if (IS_ERR(ms->kcopyd_client)) {
+ r = PTR_ERR(ms->kcopyd_client);
goto err_destroy_wq;
+ }
wakeup_mirrord(ms);
return 0;
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 5a2296d..9ecff5f 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1111,8 +1111,9 @@
goto bad_hash_tables;
}
- r = dm_kcopyd_client_create(&s->kcopyd_client);
- if (r) {
+ s->kcopyd_client = dm_kcopyd_client_create();
+ if (IS_ERR(s->kcopyd_client)) {
+ r = PTR_ERR(s->kcopyd_client);
ti->error = "Could not create kcopyd client";
goto bad_kcopyd;
}
diff --git a/include/linux/dm-kcopyd.h b/include/linux/dm-kcopyd.h
index 312513d..298d587 100644
--- a/include/linux/dm-kcopyd.h
+++ b/include/linux/dm-kcopyd.h
@@ -25,7 +25,7 @@
* To use kcopyd you must first create a dm_kcopyd_client object.
*/
struct dm_kcopyd_client;
-int dm_kcopyd_client_create(struct dm_kcopyd_client **result);
+struct dm_kcopyd_client *dm_kcopyd_client_create(void);
void dm_kcopyd_client_destroy(struct dm_kcopyd_client *kc);
/*