1 files changed, 10 insertions, 1 deletions

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 0ba44107d8f1..6832135159b6 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -568,6 +568,7 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
         if (!udf_parse_options(options, &uopt, true))
                 return -EINVAL;
 
+        lock_kernel();
         sbi->s_flags = uopt.flags;
         sbi->s_uid   = uopt.uid;
         sbi->s_gid   = uopt.gid;
@@ -581,13 +582,16 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
                         *flags |= MS_RDONLY;
         }
 
-        if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
+        if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
+                unlock_kernel();
                 return 0;
+        }
         if (*flags & MS_RDONLY)
                 udf_close_lvid(sb);
         else
                 udf_open_lvid(sb);
 
+        unlock_kernel();
         return 0;
 }
 
@@ -2062,6 +2066,9 @@ static void udf_put_super(struct super_block *sb)
         struct udf_sb_info *sbi;
 
         sbi = UDF_SB(sb);
+
+        lock_kernel();
+
         if (sbi->s_vat_inode)
                 iput(sbi->s_vat_inode);
         if (sbi->s_partitions)
@@ -2077,6 +2084,8 @@ static void udf_put_super(struct super_block *sb)
         kfree(sbi->s_partmaps);
         kfree(sb->s_fs_info);
         sb->s_fs_info = NULL;
+
+        unlock_kernel();
 }
 
 static int udf_sync_fs(struct super_block *sb, int wait)