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BUF_ISLOCKED(9) 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:

An exclusive lock is held by curthread.
An exclusive lock is held by someone other than curthread.
A shared lock is held.
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>.
January 22, 2008 Linux 4.9.0-9-amd64