tree 2c8bf9a167f351b89ef86e2133ffec7dfb5d1ce7
parent b9688bb8459b67e42327de6420edb405a9188775
author Stefan Behrens <sbehrens@giantdisaster.de> 1332170242 +0100
committer David Sterba <dsterba@suse.cz> 1334769755 +0200

Btrfs: fix btrfs_ioctl_dev_info() crash on missing device

When a filesystem is mounted with the degraded option, it is
possible that some of the devices are not there.
btrfs_ioctl_dev_info() crashs in this case because the device
name is a NULL pointer. This ioctl was only used for scrub.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>