From: Jeff Mahoney <jeffm@suse.com>
Date: Fri, 1 Nov 2013 17:06:57 +0000 (-0400)
Subject: btrfs: publish supported featured in sysfs
X-Git-Tag: v3.14-rc1~29^2~142
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=079b72bca30dbc74c86c7c7825b8c34eb86ce3ee;p=pandora-kernel.git

btrfs: publish supported featured in sysfs

This patch adds the ability to publish supported features to sysfs under
/sys/fs/btrfs/features.

The files are module-wide and export which features the kernel supports.

The content, for now, is just "0\n".

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <clm@fb.com>
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