[PATCH] remove fat_search_long() in vfat_add_entry()

This removes the fat_search_long() in the vfat_add_entry().  This path
is already checked by the vfs layer whether file/directory exists.  So,
we don't need the fat_search_long() in vfat_add_entry().

The following is the result of created the 1000 files,

2.5.39
root@devron (a)[1007]# time ../../create

real    0m2.761s
user    0m0.006s
sys     0m2.752s
root@devron (a)[1008]#

2.5.39 + patch
root@devron (a)[1007]# time ../../create

real    0m1.601s
user    0m0.008s
sys     0m1.575s
root@devron (a)[1008]#

fs/vfat/namei.c

@@ -890,7 +890,6 @@ static int vfat_add_entry(struct inode *dir,struct qstr* qname,
 	struct msdos_dir_entry *dummy_de;
 	struct buffer_head *dummy_bh;
 	int dummy_ino;
-	loff_t dummy;
 
 	dir_slots = (struct msdos_dir_slot *)
 	       kmalloc(sizeof(struct msdos_dir_slot) * MSDOS_SLOTS, GFP_KERNEL);
@@ -900,15 +899,6 @@ static int vfat_add_entry(struct inode *dir,struct qstr* qname,
 	len = qname->len;
 	while (len && qname->name[len-1] == '.')
 		len--;
-	res = fat_search_long(dir, qname->name, len,
-			      (MSDOS_SB(sb)->options.name_check != 's')
-			      || !MSDOS_SB(sb)->options.posixfs,
-			      &dummy, &dummy);
-	if (res > 0) /* found */
-		res = -EEXIST;
-	if (res)
-		goto cleanup;
-
 	res = vfat_build_slots(dir, qname->name, len,
 			       dir_slots, &slots, is_dir);
 	if (res < 0)