Btrfs: set/change the label of a mounted file system
With this new ioctl(2) BTRFS_IOC_SET_FSLABEL, we can set/change the label of a mounted file system. Signed-off-by: NJie Liu <jeff.liu@oracle.com> Signed-off-by: NAnand Jain <anand.jain@oracle.com> Reviewed-by: NMiao Xie <miaox@cn.fujitsu.com> Reviewed-by: NGoffredo Baroncelli <kreijack@inwind.it> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Reviewed-by: NGoffredo Baroncelli <kreijack@inwind.it> Signed-off-by: NJosef Bacik <jbacik@fusionio.com>
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