Ocfs2/move_extents: helpers to update the group descriptor and global bitmap inode.
Ocfs2/move_extents: helpers to update the group descriptor and global bitmap inode.

These helpers were actually borrowed from alloc.c, which may be publicized
later.

Signed-off-by: Tristan Ye <1c61ece1e0e3e7d92a41e9a901fc3956c7c63903@oracle.com>

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