1 files changed, 10 insertions, 2 deletions

diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index ec8c3e4baca3..eb31f677347d 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -438,14 +438,20 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
         s64 newLVSize = 0;
         int flag, ret = -EINVAL;
 
+        lock_kernel();
+
         jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags);
 
-        if (!new_valid_dev(sb->s_bdev->bd_dev))
+        if (!new_valid_dev(sb->s_bdev->bd_dev)) {
+                unlock_kernel();
                 return -EOVERFLOW;
+        }
 
         sbi = kzalloc(sizeof (struct jfs_sb_info), GFP_KERNEL);
-        if (!sbi)
+        if (!sbi) {
+                unlock_kernel();
                 return -ENOMEM;
+        }
         sb->s_fs_info = sbi;
         sbi->sb = sb;
         sbi->uid = sbi->gid = sbi->umask = -1;
@@ -542,6 +548,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
         sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, (u64)sb->s_maxbytes);
 #endif
         sb->s_time_gran = 1;
+        unlock_kernel();
         return 0;
 
 out_no_root:
@@ -564,6 +571,7 @@ out_unload:
                 unload_nls(sbi->nls_tab);
 out_kfree:
         kfree(sbi);
+        unlock_kernel();
         return ret;
 }