xfs: convert XFS_AGFL_SIZE to a helper function

The AGFL size calculation is about to get more complex, so lets turn
the macro into a function first and remove the macro.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
[darrick: forward port to newer kernel, simplify the helper]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Dave Chinner 2018-03-06 17:08:32 -08:00 • committed by Darrick J. Wong
commit a78ee256c3
5 changed files with 31 additions and 23 deletions