superblock_lock_zero  355 drivers/md/dm-cache-metadata.c 	r = superblock_lock_zero(cmd, &sblock);
superblock_lock_zero  523 drivers/md/dm-era-target.c 	r = superblock_lock_zero(md, &sblock);
superblock_lock_zero  546 drivers/md/dm-thin-metadata.c 	r = superblock_lock_zero(pmd, &sblock);