1 files changed, 4 insertions, 0 deletions

diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 7901d8cbb9b1..7262e8427c20 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -316,6 +316,8 @@ static void nilfs_put_super(struct super_block *sb)
         struct nilfs_sb_info *sbi = NILFS_SB(sb);
         struct the_nilfs *nilfs = sbi->s_nilfs;
 
+        lock_kernel();
+
         if (sb->s_dirt)
                 nilfs_write_super(sb);
 
@@ -333,6 +335,8 @@ static void nilfs_put_super(struct super_block *sb)
         sbi->s_super = NULL;
         sb->s_fs_info = NULL;
         kfree(sbi);
+
+        unlock_kernel();
 }
 
 /**