read_trylock     1630 arch/ia64/kernel/mca.c 	if (read_trylock(&tasklist_lock)) {
read_trylock      184 arch/powerpc/platforms/pseries/dtl.c 	if (!read_trylock(&dtl_access_lock))
read_trylock      191 fs/btrfs/locking.c 	if (!read_trylock(&eb->lock))