[PATCH] remount: fs/udf fixes

 - same problem as with sysv - mount-time checks for fs being good for
   writing are absent on remount.  Check added.

diff --git a/fs/udf/super.c b/fs/udf/super.c
index d23edb52ca537447f5dde1f9ce9590e2bd1a32ac..bbad84970ebbf6c170083d515a747330e22ab483 100644 (file)
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -460,6 +460,12 @@ udf_remount_fs(struct super_block *sb, int *flags, char *options)
        UDF_SB(sb)->s_gid   = uopt.gid;
        UDF_SB(sb)->s_umask = uopt.umask;
 
+       if (UDF_SB_LVIDBH(sb)) {
+               int write_rev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev);
+               if (write_rev > UDF_MAX_WRITE_VERSION)
+                       *flags |= MS_RDONLY;
+       }
+
        if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
                return 0;
        if (*flags & MS_RDONLY)