Commits
Miao Xie committed 3c04ce01053
Btrfs: get write access when setting the default subvolume When wen want to set the default subvolume, we must get write access, or we will change the R/O file system. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>