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From:   Jan Dakinevich <jan.dakinevich@virtuozzo.com>
To:     Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@ziepe.ca>,
        Leon Romanovsky <leon@kernel.org>,
        Yuval Shaia <yuval.shaia@oracle.com>,
        Alex Vesker <valex@mellanox.com>,
        Erez Shitrit <erezsh@mellanox.com>,
        Feras Daoud <ferasda@mellanox.com>,
        Kees Cook <keescook@chromium.org>,
        Evgenii Smirnov <evgenii.smirnov@profitbricks.com>,
        linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     Denis Lunev <den@virtuozzo.com>,
        Konstantin Khorenko <khorenko@virtuozzo.com>,
        Jan Dakinevich <jan.dakinevich@virtuozzo.com>
Subject: [PATCH] IPoIB: use kvzalloc to allocate an array of bucket pointers
Date:   Mon,  9 Jul 2018 16:51:03 +0300
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This table by default takes 32KiB which is 3rd memory order. Meanwhile,
this memory is not aimed for DMA operation and could be safely allocated
by vmalloc.

Signed-off-by: Jan Dakinevich <jan.dakinevich@virtuozzo.com>
---
 drivers/infiniband/ulp/ipoib/ipoib_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 26cde95..cb752df 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1526,7 +1526,7 @@ static int ipoib_neigh_hash_init(struct ipoib_dev_priv *priv)
 		return -ENOMEM;
 	set_bit(IPOIB_STOP_NEIGH_GC, &priv->flags);
 	size = roundup_pow_of_two(arp_tbl.gc_thresh3);
-	buckets = kcalloc(size, sizeof(*buckets), GFP_KERNEL);
+	buckets = kvcalloc(size, sizeof(*buckets), GFP_KERNEL);
 	if (!buckets) {
 		kfree(htbl);
 		return -ENOMEM;
@@ -1554,7 +1554,7 @@ static void neigh_hash_free_rcu(struct rcu_head *head)
 	struct ipoib_neigh __rcu **buckets = htbl->buckets;
 	struct ipoib_neigh_table *ntbl = htbl->ntbl;
 
-	kfree(buckets);
+	kvfree(buckets);
 	kfree(htbl);
 	complete(&ntbl->deleted);
 }
-- 
2.1.4