xfs_buf_trylock
if (!xfs_buf_trylock(bp))
if (!xfs_buf_trylock(bp)) {
extern int xfs_buf_trylock(struct xfs_buf *);
if (!xfs_buf_trylock(bp)) {
if (!xfs_buf_trylock(bp))
if (!xfs_buf_trylock(bp))
DEFINE_BUF_EVENT(xfs_buf_trylock);
if (!xfs_buf_trylock(bp))