From: Dave Chinner <dchinner@redhat.com>
Date: Mon, 12 Nov 2012 11:54:00 +0000 (+1100)
Subject: xfs: make growfs initialise the AGFL header
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~55^2~35
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=de497688daaabbab425a8a969528272ec1d962a6;p=pandora-kernel.git

xfs: make growfs initialise the AGFL header

For verification purposes, AGFLs need to be initialised to a known
set of values. For upcoming CRC changes, they are also headers that
need to be initialised. Currently, growfs does neither for the AGFLs
- it ignores them completely. Add initialisation of the AGFL to be
full of invalid block numbers (NULLAGBLOCK) to put the
infrastructure in place needed for CRC support.

Includes a comment clarification from Jeff Liu.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by Rich Johnston <rjohnston@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
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