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Man Pages
BUF_LOCK(9) FreeBSD Kernel Developer's Manual BUF_LOCK(9)

BUF_LOCK
locks a buffer

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <sys/bio.h>
#include <sys/buf.h>
int
BUF_LOCK(struct buf *bp, int locktype);

The BUF_LOCK() function locks the given buffer. If the lock is already held this call will block until it can acquire the lock unless LK_NOWAIT is set.
Its arguments are:
bp
The buffer to lock.
locktype
Flags controlling the type of lock. See lockmgr(9) for details.

A value of 0 is returned upon success. See lockmgr(9) for information on non-zero return values.

buf(9), BUF_TIMELOCK(9), BUF_UNLOCK(9), lockmgr(9)

This manual page was written by Chad David <davidc@acns.ab.ca>.
July 9, 2001 FreeBSD 12.0-RELEASE

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