BUF_ISLOCKED(9) BSD 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>.
BSD
January 22, 2008 BSD
