From: Allison Henderson <allison.henderson@xxxxxxxxxx>
Source kernel commit: c14b8c08a1dff8019bc4cd1674c5d5bd4248a1e5
Having established that we can reduce the minimum log size computation
for filesystems with parent pointers or any newer feature, we should
also drop the compat minlogsize code that we added when we reduced the
transaction reservation size for rmap and reflink.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
---
libxfs/xfs_log_rlimit.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/libxfs/xfs_log_rlimit.c b/libxfs/xfs_log_rlimit.c
index 6ecb9ad5..59605f0d 100644
--- a/libxfs/xfs_log_rlimit.c
+++ b/libxfs/xfs_log_rlimit.c
@@ -91,6 +91,16 @@ xfs_log_calc_trans_resv_for_minlogblocks(
{
unsigned int rmap_maxlevels = mp->m_rmap_maxlevels;
+ /*
+ * Starting with the parent pointer feature, every new fs feature
+ * drops the oversized minimum log size computation introduced by the
+ * original reflink code.
+ */
+ if (xfs_has_parent_or_newer_feature(mp)) {
+ xfs_trans_resv_calc(mp, resv);
+ return;
+ }
+
/*
* In the early days of rmap+reflink, we always set the rmap maxlevels
* to 9 even if the AG was small enough that it would never grow to
