BUF_ISLOCKED(9)        FreeBSD Kernel Developer's Manual       BUF_ISLOCKED(9)

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

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

FreeBSD 13.1-RELEASE-p6        January 22, 2008        FreeBSD 13.1-RELEASE-p6