BKL: Remove BKL from ext3_put_super() and ext3_remount()

The BKL lock is protecting the remounting against a potential call to
ext3_put_super(). This could not happen, since this is protected by the
s_umount rw semaphore of struct super_block.

Therefore I think the BKL is protecting nothing here.

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

fs/ext3/super.c

@@ -411,9 +411,6 @@ static void ext3_put_super (struct super_block * sb)
 	int i, err;
 
 	dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
-
-	lock_kernel();
-
 	ext3_xattr_put_super(sb);
 	err = journal_destroy(sbi->s_journal);
 	sbi->s_journal = NULL;
@@ -462,8 +459,6 @@ static void ext3_put_super (struct super_block * sb)
 	sb->s_fs_info = NULL;
 	kfree(sbi->s_blockgroup_lock);
 	kfree(sbi);
-
-	unlock_kernel();
 }
 
 static struct kmem_cache *ext3_inode_cachep;
@@ -2534,8 +2529,6 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
 	int i;
 #endif
 
-	lock_kernel();
-
 	/* Store the original options */
 	lock_super(sb);
 	old_sb_flags = sb->s_flags;
@@ -2644,7 +2637,6 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
 			kfree(old_opts.s_qf_names[i]);
 #endif
 	unlock_super(sb);
-	unlock_kernel();
 
 	if (enable_quota)
 		dquot_resume(sb, -1);
@@ -2665,7 +2657,6 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
 	}
 #endif
 	unlock_super(sb);
-	unlock_kernel();
 	return err;
 }