Merge tag 'for-6.4/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Split dm-bufio's rw_semaphore and rbtree. Offers improvements to
   dm-bufio's locking to allow increased concurrent IO -- particularly
   for read access for buffers already in dm-bufio's cache.

 - Also split dm-bio-prison-v1's spinlock and rbtree with comparable aim
   at improving concurrent IO (for the DM thinp target).

 - Both the dm-bufio and dm-bio-prison-v1 scaling of the number of locks
   and rbtrees used are managed by dm_num_hash_locks(). And the hash
   function used by both is dm_hash_locks_index().

 - Allow DM targets to require DISCARD, WRITE_ZEROES and SECURE_ERASE to
   be split at the target specified boundary (in terms of
   max_discard_sectors, max_write_zeroes_sectors and
   max_secure_erase_sectors respectively).

 - DM verity error handling fix for check_at_most_once on FEC.

 - Update DM verity target to emit audit events on verification failure
   and more.

 - DM core ->io_hints improvements needed in support of new discard
   support that is added to the DM "zero" and "error" targets.

 - Fix missing kmem_cache_destroy() call in initialization error path of
   both the DM integrity and DM clone targets.

 - A couple fixes for DM flakey, also add "error_reads" feature.

 - Fix DM core's resume to not lock FS when the DM map is NULL;
   otherwise initial table load can race with FS mount that takes
   superblock's ->s_umount rw_semaphore.

 - Various small improvements to both DM core and DM targets.

* tag 'for-6.4/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (40 commits)
  dm: don't lock fs when the map is NULL in process of resume
  dm flakey: add an "error_reads" option
  dm flakey: remove trailing space in the table line
  dm flakey: fix a crash with invalid table line
  dm ioctl: fix nested locking in table_clear() to remove deadlock concern
  dm: unexport dm_get_queue_limits()
  dm: allow targets to require splitting WRITE_ZEROES and SECURE_ERASE
  dm: add helper macro for simple DM target module init and exit
  dm raid: remove unused d variable
  dm: remove unnecessary (void*) conversions
  dm mirror: add DMERR message if alloc_workqueue fails
  dm: push error reporting down to dm_register_target()
  dm integrity: call kmem_cache_destroy() in dm_integrity_init() error path
  dm clone: call kmem_cache_destroy() in dm_clone_init() error path
  dm error: add discard support
  dm zero: add discard support
  dm table: allow targets without devices to set ->io_hints
  dm verity: emit audit events on verification failure and more
  dm verity: fix error handling for check_at_most_once on FEC
  dm: improve hash_locks sizing and hash function
  ...

1 files changed, 1 insertions, 21 deletions

diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 3aa5874f0aef..074cb785eafc 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -2773,27 +2773,7 @@ static struct target_type writecache_target = {
 	.iterate_devices	= writecache_iterate_devices,
 	.io_hints		= writecache_io_hints,
 };
-
-static int __init dm_writecache_init(void)
-{
-	int r;
-
-	r = dm_register_target(&writecache_target);
-	if (r < 0) {
-		DMERR("register failed %d", r);
-		return r;
-	}
-
-	return 0;
-}
-
-static void __exit dm_writecache_exit(void)
-{
-	dm_unregister_target(&writecache_target);
-}
-
-module_init(dm_writecache_init);
-module_exit(dm_writecache_exit);
+module_dm(writecache);
 
 MODULE_DESCRIPTION(DM_NAME " writecache target");
 MODULE_AUTHOR("Mikulas Patocka <dm-devel@redhat.com>");