From: Neil Brown <neilb@notabene.brown>
Date: Fri, 27 Jun 2008 22:31:33 +0000 (+1000)
Subject: rationalise return value for ->hot_add_disk method.
X-Git-Tag: v2.6.27-rc1~957^2~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=199050ea1ff2270174ee525b73bc4c3323098897;p=pandora-kernel.git

rationalise return value for ->hot_add_disk method.

For all array types but linear, ->hot_add_disk returns 1 on
success, 0 on failure.
For linear, it returns 0 on success and -errno on failure.

This doesn't cause a functional problem because the ->hot_add_disk
function of linear is used quite differently to the others.
However it is confusing.

So convert all to return 0 for success or -errno on failure
and fix call sites to match.

Signed-off-by: Neil Brown <neilb@suse.de>
---

Reading git-diff-tree failed