'\" t
.\"     Title: journal_dirty_metadata
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: The Linux Journalling API
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "JOURNAL_DIRTY_METADA" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "The Linux Journalling API"
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.SH "NAME"
journal_dirty_metadata \- mark a buffer as containing dirty metadata
.SH "SYNOPSIS"
.HP \w'int\ journal_dirty_metadata('u
.BI "int journal_dirty_metadata(handle_t\ *\ " "handle" ", struct\ buffer_head\ *\ " "bh" ");"
.SH "ARGUMENTS"
.PP
\fIhandle\fR
.RS 4
transaction to add buffer to\&.
.RE
.PP
\fIbh\fR
.RS 4
buffer to mark
.RE
.SH "DESCRIPTION"
.PP
Mark dirty metadata which needs to be journaled as part of the current transaction\&.
.PP
The buffer is placed on the transaction\*(Aqs metadata list and is marked as belonging to the transaction\&.
.PP
Returns error number or 0 on success\&.
.PP
Special care needs to be taken if the buffer already belongs to the current committing transaction (in which case we should have frozen data present for that commit)\&. In that case, we don\*(Aqt relink the
.SH "BUFFER"
.PP
that only gets done when the old transaction finally completes its commit\&.
.SH "AUTHORS"
.PP
\fBRoger Gammans\fR <\&rgammans@computer-surgery.co.uk\&>
.RS 4
Author.
.RE
.PP
\fBStephen Tweedie\fR <\&sct@redhat.com\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br