NAME

     BUF_ISLOCKED — returns the state of the lock linked to the buffer

SYNOPSIS

     #include <sys/param.h>
     #include <sys/systm.h>
     #include <sys/uio.h>
     #include <sys/bio.h>
     #include <sys/buf.h>

     int
     BUF_ISLOCKED(struct buf *bp);

DESCRIPTION

     The BUF_ISLOCKED() function returns the status of the lock linked to the buffer in relation
     to curthread.

     It can return:

     LK_EXCLUSIVE  An exclusive lock is held by curthread.

     LK_EXCLOTHER  An exclusive lock is held by someone other than curthread.

     LK_SHARED     A shared lock is held.

     0             The lock is not held by anyone.

SEE ALSO

     lockstatus(9), buf(9), BUF_LOCK(9), BUF_UNLOCK(9), lockmgr(9)

AUTHORS

     This manual page was written by Attilio Rao <attilio@FreeBSD.org>.