X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fmd%2Fdm-table.c;h=6a7f2b83a1263f4c4ca6bc33b4a22fd5893bf445;hb=d9894c228b11273e720bb63ba120d1d326fe9d94;hp=3ba6a3859ce3c4957439ff3afdc4a5133bc2900b;hpb=849e1517a463369ce5db696ea74e07841bf65c9a;p=~andy%2Flinux

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 3ba6a3859ce..6a7f2b83a12 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -155,7 +155,6 @@ static int alloc_targets(struct dm_table *t, unsigned int num)
 {
 	sector_t *n_highs;
 	struct dm_target *n_targets;
-	int n = t->num_targets;
 
 	/*
 	 * Allocate both the target array and offset array at once.
@@ -169,12 +168,7 @@ static int alloc_targets(struct dm_table *t, unsigned int num)
 
 	n_targets = (struct dm_target *) (n_highs + num);
 
-	if (n) {
-		memcpy(n_highs, t->highs, sizeof(*n_highs) * n);
-		memcpy(n_targets, t->targets, sizeof(*n_targets) * n);
-	}
-
-	memset(n_highs + n, -1, sizeof(*n_highs) * (num - n));
+	memset(n_highs, -1, sizeof(*n_highs) * num);
 	vfree(t->highs);
 
 	t->num_allocated = num;
@@ -260,17 +254,6 @@ void dm_table_destroy(struct dm_table *t)
 	kfree(t);
 }
 
-/*
- * Checks to see if we need to extend highs or targets.
- */
-static inline int check_space(struct dm_table *t)
-{
-	if (t->num_targets >= t->num_allocated)
-		return alloc_targets(t, t->num_allocated * 2);
-
-	return 0;
-}
-
 /*
  * See if we've already got a device in the list.
  */
@@ -731,8 +714,7 @@ int dm_table_add_target(struct dm_table *t, const char *type,
 		return -EINVAL;
 	}
 
-	if ((r = check_space(t)))
-		return r;
+	BUG_ON(t->num_targets >= t->num_allocated);
 
 	tgt = t->targets + t->num_targets;
 	memset(tgt, 0, sizeof(*tgt));