Btrfs: add ro notification to dump_space_info
Btrfs: add ro notification to dump_space_info

Block group has ro attributes, make dump_space_info show it.

Signed-off-by: Liu Bo <00b627b8656913e4df3ede997ad1311ebf4b82a4@cn.fujitsu.com>
Signed-off-by: Josef Bacik <631dfb3d07694fdcf26abc7aac2c6c2b641f8bde@fusionio.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs