Pool allocation classes

Allocation Classes add the ability to have allocation classes in a
pool that are dedicated to serving specific block categories, such
as DDT data, metadata, and small file blocks. A pool can opt-in to
this feature by adding a 'special' or 'dedup' top-level VDEV.

Reviewed by: Pavel Zakharov <[email protected]>
Reviewed-by: Richard Laager <[email protected]>
Reviewed-by: Alek Pinchuk <[email protected]>
Reviewed-by: Håkan Johansson <[email protected]>
Reviewed-by: Andreas Dilger <[email protected]>
Reviewed-by: DHE <[email protected]>
Reviewed-by: Richard Elling <[email protected]>
Reviewed-by: Gregor Kopka <[email protected]>
Reviewed-by: Kash Pande <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Matthew Ahrens <[email protected]>
Signed-off-by: Don Brady <[email protected]>
Closes #5182 

1 files changed, 5 insertions, 1 deletions

diff --git a/module/zfs/zfs_debug.c b/module/zfs/zfs_debug.c
index e2aff28e1..ca79893c9 100644
--- a/module/zfs/zfs_debug.c
+++ b/module/zfs/zfs_debug.c
@@ -133,11 +133,15 @@ zfs_dbgmsg_fini(void)
 {
 	if (zfs_dbgmsg_kstat)
 		kstat_delete(zfs_dbgmsg_kstat);
-
+	/*
+	 * TODO - decide how to make this permanent
+	 */
+#ifdef _KERNEL
 	mutex_enter(&zfs_dbgmsgs_lock);
 	zfs_dbgmsg_purge(0);
 	mutex_exit(&zfs_dbgmsgs_lock);
 	mutex_destroy(&zfs_dbgmsgs_lock);
+#endif
 }
 
 void