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[06/20] xfs: realtime rmap btree transaction reservations

Message ID 154630949977.8108.5299695335905354232.stgit@magnolia (mailing list archive)
State Superseded
Headers show
Series xfs: add realtime reverse-mapping support | expand

Commit Message

Darrick J. Wong Jan. 1, 2019, 2:24 a.m. UTC 
From: Darrick J. Wong <darrick.wong@oracle.com>

Make sure that there's enough log reservation to handle mapping
and unmapping realtime extents.  We have to reserve enough space
to handle a split in the rtrmapbt to add the record and a second
split in the regular rmapbt to record the rtrmapbt split.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/libxfs/xfs_trans_resv.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c
index 33cc35159088..477c67f1faa7 100644
--- a/fs/xfs/libxfs/xfs_trans_resv.c
+++ b/fs/xfs/libxfs/xfs_trans_resv.c
@@ -74,7 +74,8 @@  xfs_allocfree_log_count(
 
 	blocks = num_ops * 2 * (2 * mp->m_ag_maxlevels - 1);
 	if (xfs_sb_version_hasrmapbt(&mp->m_sb))
-		blocks += num_ops * (2 * mp->m_rmap_maxlevels - 1);
+		blocks += max(num_ops * (2 * mp->m_rmap_maxlevels - 1),
+			      num_ops * (2 * mp->m_rtrmap_maxlevels - 1));
 	if (xfs_sb_version_hasreflink(&mp->m_sb))
 		blocks += num_ops * (2 * mp->m_refc_maxlevels - 1);