ext[234]: remove unused argument for ext[234]_find_goal()

The argument chain for ext[234]_find_goal() is not used.  This patch removes
it and fixes comment as well.

Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 0775354..a4f2d67 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -439,16 +439,14 @@
  *	ext3_find_goal - find a prefered place for allocation.
  *	@inode: owner
  *	@block:  block we want
- *	@chain:  chain of indirect blocks
  *	@partial: pointer to the last triple within a chain
- *	@goal:	place to store the result.
  *
  *	Normally this function find the prefered place for block allocation,
- *	stores it in *@goal and returns zero.
+ *	returns it.
  */
 
 static ext3_fsblk_t ext3_find_goal(struct inode *inode, long block,
-		Indirect chain[4], Indirect *partial)
+				   Indirect *partial)
 {
 	struct ext3_block_alloc_info *block_i;
 
@@ -884,7 +882,7 @@
 	if (S_ISREG(inode->i_mode) && (!ei->i_block_alloc_info))
 		ext3_init_block_alloc_info(inode);
 
-	goal = ext3_find_goal(inode, iblock, chain, partial);
+	goal = ext3_find_goal(inode, iblock, partial);
 
 	/* the number of blocks need to allocate for [d,t]indirect blocks */
 	indirect_blks = (chain + depth) - partial - 1;