remove leftovers of shared read-only support

We never supported shared read-only filesystems, so remove the dead
code left over from IRIX for it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>

1 files changed, 0 insertions, 26 deletions

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 3f999b1c0385..1672ff56a009 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1352,24 +1352,6 @@ xfs_log_sbcount(
         return error;
 }
 
-STATIC void
-xfs_mark_shared_ro(
-        xfs_mount_t     *mp,
-        xfs_buf_t       *bp)
-{
-        xfs_dsb_t       *sb = XFS_BUF_TO_SBP(bp);
-        __uint16_t      version;
-
-        if (!(sb->sb_flags & XFS_SBF_READONLY))
-                sb->sb_flags |= XFS_SBF_READONLY;
-
-        version = be16_to_cpu(sb->sb_versionnum);
-        if ((version & XFS_SB_VERSION_NUMBITS) != XFS_SB_VERSION_4 ||
-            !(version & XFS_SB_VERSION_SHAREDBIT))
-                version |= XFS_SB_VERSION_SHAREDBIT;
-        sb->sb_versionnum = cpu_to_be16(version);
-}
-
 int
 xfs_unmountfs_writesb(xfs_mount_t *mp)
 {
@@ -1385,12 +1367,6 @@ xfs_unmountfs_writesb(xfs_mount_t *mp)
 
                 sbp = xfs_getsb(mp, 0);
 
-                /*
-                 * mark shared-readonly if desired
-                 */
-                if (mp->m_mk_sharedro)
-                        xfs_mark_shared_ro(mp, sbp);
-
                 XFS_BUF_UNDONE(sbp);
                 XFS_BUF_UNREAD(sbp);
                 XFS_BUF_UNDELAYWRITE(sbp);
@@ -1402,8 +1378,6 @@ xfs_unmountfs_writesb(xfs_mount_t *mp)
                 if (error)
                         xfs_ioerror_alert("xfs_unmountfs_writesb",
                                           mp, sbp, XFS_BUF_ADDR(sbp));
-                if (error && mp->m_mk_sharedro)
-                        xfs_fs_cmn_err(CE_ALERT, mp, "Superblock write error detected while unmounting.  Filesystem may not be marked shared readonly");
                 xfs_buf_relse(sbp);
         }
         return error;