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

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

Debian                                          January 22, 2008                                 BUF_ISLOCKED(9)

       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.

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

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

#include<sys/param.h>#include<sys/systm.h>#include<sys/uio.h>#include<sys/bio.h>#include<sys/buf.h>intBUF_ISLOCKED(structbuf*bp);