xfs: support shrinking unused space in the last AG

Browse source

As the first step of shrinking, this attempts to enable shrinking
unused space in the last allocation group by fixing up freespace
btree, agi, agf and adjusting super block and use a helper
xfs_ag_shrink_space() to fixup the last AG.

This can be all done in one transaction for now, so I think no
additional protection is needed.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>

...

This commit is contained in:

Gao Xiang 2021-03-23 19:05:39 -07:00 • committed by Darrick J. Wong

parent 46141dc891

commit fb2fc17201

2 changed files with 59 additions and 35 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

93

fs/xfs/xfs_fsops.c

View file

1

fs/xfs/xfs_trans.c

View file