xfs: make is_log_ag() a first class helper
We check if an ag contains the log in many places, so make this
a first class XFS helper by lifting it to fs/xfs/libxfs/xfs_ag.h and
renaming it xfs_ag_contains_log(). The convert all the places that
check if the AG contains the log to use this helper.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
diff --git a/fs/xfs/libxfs/xfs_refcount_btree.c b/fs/xfs/libxfs/xfs_refcount_btree.c
index 1063234..316c1ec 100644
--- a/fs/xfs/libxfs/xfs_refcount_btree.c
+++ b/fs/xfs/libxfs/xfs_refcount_btree.c
@@ -507,8 +507,7 @@ xfs_refcountbt_calc_reserves(
* never be available for the kinds of things that would require btree
* expansion. We therefore can pretend the space isn't there.
*/
- if (mp->m_sb.sb_logstart &&
- XFS_FSB_TO_AGNO(mp, mp->m_sb.sb_logstart) == pag->pag_agno)
+ if (xfs_ag_contains_log(mp, pag->pag_agno))
agblocks -= mp->m_sb.sb_logblocks;
*ask += xfs_refcountbt_max_size(mp, agblocks);
