From: Qianfeng Rong <rongqianfeng@vivo.com>
Date: Wed, 6 Aug 2025 12:27:04 +0000 (+0800)
Subject: dm: use vmalloc_array() to simplify code
X-Git-Tag: v6.18-rc1~101^2~24
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3797175b3673b3a38d59991f7bf4762bce016dd;p=thirdparty%2Fkernel%2Flinux.git

dm: use vmalloc_array() to simplify code

Remove array_size() calls and replace vmalloc() with vmalloc_array() to
simplify the code.

Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
---

diff --git a/drivers/md/dm-cache-policy-smq.c b/drivers/md/dm-cache-policy-smq.c
index 2ed894155cabb..7e1e8cc0e33a3 100644
--- a/drivers/md/dm-cache-policy-smq.c
+++ b/drivers/md/dm-cache-policy-smq.c
@@ -590,7 +590,7 @@ static int h_init(struct smq_hash_table *ht, struct entry_space *es, unsigned in
 	nr_buckets = roundup_pow_of_two(max(nr_entries / 4u, 16u));
 	ht->hash_bits = __ffs(nr_buckets);
 
-	ht->buckets = vmalloc(array_size(nr_buckets, sizeof(*ht->buckets)));
+	ht->buckets = vmalloc_array(nr_buckets, sizeof(*ht->buckets));
 	if (!ht->buckets)
 		return -ENOMEM;
 
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index a4550975c27d0..e9b47b659976a 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -206,7 +206,7 @@ struct dm_region_hash *dm_region_hash_create(
 	rh->shift = RH_HASH_SHIFT;
 	rh->prime = RH_HASH_MULT;
 
-	rh->buckets = vmalloc(array_size(nr_buckets, sizeof(*rh->buckets)));
+	rh->buckets = vmalloc_array(nr_buckets, sizeof(*rh->buckets));
 	if (!rh->buckets) {
 		DMERR("unable to allocate region hash bucket memory");
 		kfree(rh);
diff --git a/drivers/md/dm-switch.c b/drivers/md/dm-switch.c
index bb1a70b5a2152..50a52ca50b34c 100644
--- a/drivers/md/dm-switch.c
+++ b/drivers/md/dm-switch.c
@@ -114,8 +114,8 @@ static int alloc_region_table(struct dm_target *ti, unsigned int nr_paths)
 		return -EINVAL;
 	}
 
-	sctx->region_table = vmalloc(array_size(nr_slots,
-						sizeof(region_table_slot_t)));
+	sctx->region_table = vmalloc_array(nr_slots,
+					   sizeof(region_table_slot_t));
 	if (!sctx->region_table) {
 		ti->error = "Cannot allocate region table";
 		return -ENOMEM;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 007bb93e5fca6..c84149ba4e38e 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -3031,8 +3031,8 @@ static struct pool *pool_create(struct mapped_device *pool_md,
 	}
 
 	pool->cell_sort_array =
-		vmalloc(array_size(CELL_SORT_ARRAY_SIZE,
-				   sizeof(*pool->cell_sort_array)));
+		vmalloc_array(CELL_SORT_ARRAY_SIZE,
+			      sizeof(*pool->cell_sort_array));
 	if (!pool->cell_sort_array) {
 		*error = "Error allocating cell sort array";
 		err_p = ERR_PTR(-ENOMEM);