From c14632ddac98dca7ab1740461fae330d09909560 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Wed, 31 Jan 2018 16:38:18 -0800
Subject: [PATCH] xfs: don't allow reflink + realtime filesystems
We don't support realtime filesystems with reflink either, so fail
those mounts.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
---
fs/xfs/xfs_super.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 0505605e25c1..96388fb9adff 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1684,6 +1684,13 @@ xfs_fs_fill_super(
}
}
+ if (xfs_sb_version_hasreflink(&mp->m_sb) && mp->m_sb.sb_rblocks) {
+ xfs_alert(mp,
+ "reflink not compatible with realtime device!");
+ error = -EINVAL;
+ goto out_filestream_unmount;
+ }
+
if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
if (mp->m_sb.sb_rblocks) {
xfs_alert(mp,
--
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