linux-kernel - [PATCH] cnic: use kvzalloc to allocate memory for csk

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Message-Id: <1531144279-26687-1-git-send-email-jan.dakinevich@virtuozzo.com>
Date:   Mon,  9 Jul 2018 16:51:19 +0300
From:   Jan Dakinevich <jan.dakinevich@...tuozzo.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jan Dakinevich <jan.dakinevich@...tuozzo.com>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Kees Cook <keescook@...omium.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Denis Lunev <den@...tuozzo.com>,
        Konstantin Khorenko <khorenko@...tuozzo.com>
Subject: [PATCH] cnic: use kvzalloc to allocate memory for csk_tbl

Size of csk_tbl is about 58K, which means 3rd order page allocation.
kvzalloc provides a fallback if no high order memory is available.

Signed-off-by: Jan Dakinevich <jan.dakinevich@...tuozzo.com>
---
 drivers/net/ethernet/broadcom/cnic.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c
index 4fd829b..1bc5d4b 100644
--- a/drivers/net/ethernet/broadcom/cnic.c
+++ b/drivers/net/ethernet/broadcom/cnic.c
@@ -4090,7 +4090,7 @@ static void cnic_cm_free_mem(struct cnic_dev *dev)
 {
 	struct cnic_local *cp = dev->cnic_priv;
 
-	kfree(cp->csk_tbl);
+	kvfree(cp->csk_tbl);
 	cp->csk_tbl = NULL;
 	cnic_free_id_tbl(&cp->csk_port_tbl);
 }
@@ -4100,8 +4100,8 @@ static int cnic_cm_alloc_mem(struct cnic_dev *dev)
 	struct cnic_local *cp = dev->cnic_priv;
 	u32 port_id;
 
-	cp->csk_tbl = kcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock),
-			      GFP_KERNEL);
+	cp->csk_tbl = kvcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock),
+			       GFP_KERNEL);
 	if (!cp->csk_tbl)
 		return -ENOMEM;
 
-- 
2.1.4