[IPV4] fib_hash: kmalloc + memset conversion to kzalloc

fib_hash: kmalloc + memset conversion to kzalloc
fix to avoid memset entirely.

Signed-off-by: Joonwoo Park <joonwpark81@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 5 deletions

diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
index 0dfee27cfbc..eb1aa8eead0 100644
--- a/net/ipv4/fib_hash.c
+++ b/net/ipv4/fib_hash.c
@@ -102,10 +102,10 @@ static struct hlist_head *fz_hash_alloc(int divisor)
         unsigned long size = divisor * sizeof(struct hlist_head);
 
         if (size <= PAGE_SIZE) {
-                return kmalloc(size, GFP_KERNEL);
+                return kzalloc(size, GFP_KERNEL);
         } else {
                 return (struct hlist_head *)
-                        __get_free_pages(GFP_KERNEL, get_order(size));
+                        __get_free_pages(GFP_KERNEL | __GFP_ZERO, get_order(size));
         }
 }
 
@@ -174,8 +174,6 @@ static void fn_rehash_zone(struct fn_zone *fz)
         ht = fz_hash_alloc(new_divisor);
 
         if (ht) {
-                memset(ht, 0, new_divisor * sizeof(struct hlist_head));
-
                 write_lock_bh(&fib_hash_lock);
                 old_ht = fz->fz_hash;
                 fz->fz_hash = ht;
@@ -219,7 +217,6 @@ fn_new_zone(struct fn_hash *table, int z)
                 kfree(fz);
                 return NULL;
         }
-        memset(fz->fz_hash, 0, fz->fz_divisor * sizeof(struct hlist_head *));
         fz->fz_order = z;
         fz->fz_mask = inet_make_mask(z);