---
name: "journal_update_superblock"
section: "9"
platform: "linux"
package: "linux-manual-2.6.26"
version: "2.6.26-29"
release: "Debian 5.0 (Lenny)"
platforms: ["linux"]
url: "https://new.carta.tech/journal_update_superblock"
---

# journal\_update\_superblock(9)

Update journal sb on disk.

## NAME

journal\_update\_superblock - Update journal sb on disk.

## SYNOPSIS

**void journal\_update\_superblock(journal\_t \*** *journal***, int** *wait***);**

## ARGUMENTS

*journal*

The journal to update.

*wait*

Set to ´0´ if you don´t want to wait for IO completion.

## DESCRIPTION

Update a journal´s dynamic superblock fields and write it to disk, optionally waiting for the IO to complete.

## AUTHORS

**Roger Gammans** \<rgammans@computer-surgery.co.uk\>

-

  Author.

**Stephen Tweedie** \<sct@redhat.com\>

-

  Author.

## COPYRIGHT