xfs: remove experimental tag for reverse mapping

Reverse mapping has had a while to soak, so remove the experimental tag.
Now that we've landed space metadata cross-referencing in scrub, the
feature actually has a purpose.

Reject rmap filesystems with an rt device until the code to support it
is actually implemented.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 96388fb9adffd7c590fe02753e6fb61b92a08320..7aba628dc5279858a7608a78839b0e32753bbee6 100644 (file)
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1691,15 +1691,11 @@ xfs_fs_fill_super(
                goto out_filestream_unmount;
        }
 
-       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;
-               }
+       if (xfs_sb_version_hasrmapbt(&mp->m_sb) && mp->m_sb.sb_rblocks) {
                xfs_alert(mp,
-       "EXPERIMENTAL reverse mapping btree feature enabled. Use at your own risk!");
+       "reverse mapping btree not compatible with realtime device!");
+               error = -EINVAL;
+               goto out_filestream_unmount;
        }
 
        error = xfs_mountfs(mp);