tree 173364b301384a61a2ba336f8354770e645d981a
parent d74a625987a134b00749e3912bdb6d3ac83fd71d
author Anand Jain <anand.jain@oracle.com> 1439548378 +0800
committer David Sterba <dsterba@suse.com> 1443713378 +0200

Btrfs: add btrfs_read_dev_one_super() to read one specific SB

This uses a chunk of code from btrfs_read_dev_super() and creates
a function called btrfs_read_dev_one_super() so that next patch
can use it for scratch superblock.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
[renamed bufhead to bh]
Signed-off-by: David Sterba <dsterba@suse.com>