From: Qu Wenruo <quwenruo@cn.fujitsu.com>
Date: Wed, 16 Apr 2014 09:02:32 +0000 (+0800)
Subject: btrfs: Add ctime/mtime update for btrfs device add/remove.
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~54^2~61
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a1972bd9fd4b2fb1bac8b7a0b636d633d8717e3;p=pandora-kernel.git

btrfs: Add ctime/mtime update for btrfs device add/remove.

Btrfs will send uevent to udev inform the device change,
but ctime/mtime for the block device inode is not udpated, which cause
libblkid used by btrfs-progs unable to detect device change and use old
cache, causing 'btrfs dev scan; btrfs dev rmove; btrfs dev scan' give an
error message.

Reported-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Cc: Karel Zak <kzak@redhat.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
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