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authorDarrick J. Wong <darrick.wong@oracle.com>2016-08-26 15:59:19 +1000
committerDave Chinner <david@fromorbit.com>2016-08-26 15:59:19 +1000
commit738f57c16a2bb527c705641f0fc1c68ff8cba72a (patch)
treea8ba74d5779529b968b03de6e29be595c0ac498b /fs
parented150e1a5cf20c04cf0b2d2c34e498fc1d6519be (diff)
downloadop-kernel-dev-738f57c16a2bb527c705641f0fc1c68ff8cba72a.zip
op-kernel-dev-738f57c16a2bb527c705641f0fc1c68ff8cba72a.tar.gz
xfs: disallow mounting of realtime + rmap filesystems
Since the kernel doesn't currently support the realtime rmapbt, don't allow such filesystems to be mounted. Support will appear in a future release. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/xfs_super.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 24ef83e..fd6be45 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1574,9 +1574,16 @@ xfs_fs_fill_super(
}
}
- if (xfs_sb_version_hasrmapbt(&mp->m_sb))
+ if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
+ if (mp->m_sb.sb_rblocks) {
+ xfs_alert(mp,
+ "EXPERIMENTAL reverse mapping btree not compatible with realtime device!");
+ error = -EINVAL;
+ goto out_filestream_unmount;
+ }
xfs_alert(mp,
"EXPERIMENTAL reverse mapping btree feature enabled. Use at your own risk!");
+ }
error = xfs_mountfs(mp);
if (error)
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