ceph: fix kerneldoc copypasta over ceph_start_io_direct

Signed-off-by: NJeff Layton <jlayton@kernel.org>
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

fs/ceph/io.c

@@ -118,7 +118,7 @@ static void ceph_block_buffered(struct ceph_inode_info *ci, struct inode *inode)
 }
 
 /**
- * ceph_end_io_direct - declare the file is being used for direct i/o
+ * ceph_start_io_direct - declare the file is being used for direct i/o
  * @inode: file inode
  *
  * Declare that a direct I/O operation is about to start, and ensure