GFS2: decouple quota allocations from block allocations

This patch separates the code pertaining to allocations into two
parts: quota-related information and block reservations.
This patch also moves all the block reservation structure allocations to
function gfs2_inplace_reserve to simplify the code, and moves
the frees to function gfs2_inplace_release.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --cc fs/gfs2/aops.c
Simple merge

diff --cc fs/gfs2/bmap.c
Simple merge

diff --cc fs/gfs2/dir.c
Simple merge

diff --cc fs/gfs2/file.c
Simple merge

diff --cc fs/gfs2/incore.h
Simple merge

diff --cc fs/gfs2/inode.c
Simple merge

diff --cc fs/gfs2/main.c
Simple merge

diff --cc fs/gfs2/quota.c
Simple merge

diff --cc fs/gfs2/rgrp.c
Simple merge

diff --cc fs/gfs2/rgrp.h
Simple merge

diff --cc fs/gfs2/super.c
Simple merge

diff --cc fs/gfs2/trans.h
Simple merge

diff --cc fs/gfs2/xattr.c
Simple merge