ext4: Use lowercase names of quota functions

Use lowercase names of quota functions instead of old uppercase ones.

Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Mingming Cao <cmm@us.ibm.com>
CC: linux-ext4@vger.kernel.org
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index de9459b..38f40d5 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -536,7 +536,7 @@
 	ext4_mb_free_blocks(handle, inode, block, count,
 			    metadata, &dquot_freed_blocks);
 	if (dquot_freed_blocks)
-		DQUOT_FREE_BLOCK(inode, dquot_freed_blocks);
+		vfs_dq_free_block(inode, dquot_freed_blocks);
 	return;
 }