5253 kmem_alloc/kmem_zalloc won't fail with KM_SLEEP
5254 getrbuf won't fail with KM_SLEEP

*** 3367,3379 ****
           * -allocate 1/2 the property size, the zfs property
           *  is 8k in size and stored as ascii hex string, all
           *  we needed is 4k buffer to store the binary data.
           * -initialize reader/write lock
           */
!         if ((sl->sl_zfs_meta = kmem_zalloc(ZAP_MAXVALUELEN / 2, KM_SLEEP))
!             == NULL)
!                 return (SBD_FAILURE);
          rw_init(&sl->sl_zfs_meta_lock, NULL, RW_DRIVER, NULL);
          return (SBD_SUCCESS);
  }
  
  char
--- 3367,3377 ----
           * -allocate 1/2 the property size, the zfs property
           *  is 8k in size and stored as ascii hex string, all
           *  we needed is 4k buffer to store the binary data.
           * -initialize reader/write lock
           */
!         sl->sl_zfs_meta = kmem_zalloc(ZAP_MAXVALUELEN / 2, KM_SLEEP);
          rw_init(&sl->sl_zfs_meta_lock, NULL, RW_DRIVER, NULL);
          return (SBD_SUCCESS);
  }
  
  char