---
name: "BUF_UNLOCK"
section: "9"
platform: "linux"
package: "freebsd-manpages"
version: "6.0-5"
release: "Debian 4.0 (Etch)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/BUF_UNLOCK"
---

# BUF\_UNLOCK(9)

unlocks a locked buffer

## NAME

**BUF\_UNLOCK** – unlocks a locked buffer

## SYNOPSIS

**#include \<sys/param.h\>**

**#include \<sys/systm.h\>**

**#include \<sys/uio.h\>**

**#include \<sys/bio.h\>**

**#include \<sys/buf.h\>**

*void*\

**BUF\_UNLOCK**(*struct buf \*bp*);

## DESCRIPTION

The **BUF\_UNLOCK**() function unlocks a buffer that was previously locked with **BUF\_LOCK**() or **BUF\_TIMELOCK**().

Its argument is:

- *bp*

  The buffer to unlock. The buffer must already be locked.

## SEE ALSO

[buf(9)](/buf/9.md), [BUF\_LOCK(9)](/BUF_LOCK/9.md), [BUF\_TIMELOCK(9)](/BUF_TIMELOCK/9.md), [lockmgr(9)](/lockmgr/9.md)

## AUTHORS

This manual page was written by Chad David ⟨davidc@acns.ab.ca⟩.