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>.

Debian                                          January 22, 2008                                 BUF_ISLOCKED(9)