BUF_ISLOCKED9
Returns the state of the lock linked to the buffer
Usage
#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);
Overview
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.
Releases
39 releases since FreeBSD 8.0-RELEASE; the text changed 26 times.