fat: fix incorrect function comment

fat_search_long() returns 0 on success, -ENOENT/ENOMEM on failure.
Change the function comment accordingly.

While at it, fix some trivial typos.
Signed-off-by: Ravishankar N <cyberax82@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/fat/dir.c

@@ -461,8 +461,7 @@ static int fat_parse_short(struct super_block *sb,
 }
 
 /*
- * Return values: negative -> error, 0 -> not found, positive -> found,
- * value is the total amount of slots, including the shortname entry.
+ * Return values: negative -> error/not found, 0 -> found.
  */
 int fat_search_long(struct inode *inode, const unsigned char *name,
 		    int name_len, struct fat_slot_info *sinfo)
@@ -1255,7 +1254,7 @@ int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
 
 	sinfo->nr_slots = nr_slots;
 
-	/* First stage: search free direcotry entries */
+	/* First stage: search free directory entries */
 	free_slots = nr_bhs = 0;
 	bh = prev = NULL;
 	pos = 0;

fs/fat/inode.c

@@ -1344,7 +1344,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat,
 	sbi->dir_entries = get_unaligned_le16(&b->dir_entries);
 	if (sbi->dir_entries & (sbi->dir_per_block - 1)) {
 		if (!silent)
-			fat_msg(sb, KERN_ERR, "bogus directroy-entries per block"
+			fat_msg(sb, KERN_ERR, "bogus directory-entries per block"
 			       " (%u)", sbi->dir_entries);
 		brelse(bh);
 		goto out_invalid;

fs/fat/misc.c

@@ -135,6 +135,10 @@ int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster)
 		}
 		if (ret < 0)
 			return ret;
+		/*
+		 * FIXME:Although we can add this cache, fat_cache_add() is
+		 * assuming to be called after linear search with fat_cache_id.
+		 */
 //		fat_cache_add(inode, new_fclus, new_dclus);
 	} else {
 		MSDOS_I(inode)->i_start = new_dclus;