net: remove netdev_alloc_page and use __GFP_COLD

Given we dont use anymore the struct net_device *dev argument, and this
interface brings litle benefit, remove netdev_{alloc|free}_page(), to
debloat include/linux/skbuff.h a bit.

(Some drivers used a mix of these interfaces and alloc_pages())

When allocating a page given to device for DMA transfer (device to
memory), it makes sense to use a cold one (__GFP_COLD)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
CC: Dimitris Michailidis <dm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/net/usb/cdc-phonet.c b/drivers/net/usb/cdc-phonet.c
index a60d0069cc45..331e44056f5a 100644
--- a/drivers/net/usb/cdc-phonet.c
+++ b/drivers/net/usb/cdc-phonet.c
@@ -130,7 +130,7 @@ static int rx_submit(struct usbpn_dev *pnd, struct urb *req, gfp_t gfp_flags)
         struct page *page;
         int err;
 
-        page = __netdev_alloc_page(dev, gfp_flags);
+        page = alloc_page(gfp_flags);
         if (!page)
                 return -ENOMEM;
 
@@ -140,7 +140,7 @@ static int rx_submit(struct usbpn_dev *pnd, struct urb *req, gfp_t gfp_flags)
         err = usb_submit_urb(req, gfp_flags);
         if (unlikely(err)) {
                 dev_dbg(&dev->dev, "RX submit error (%d)\n", err);
-                netdev_free_page(dev, page);
+                put_page(page);
         }
         return err;
 }
@@ -208,9 +208,9 @@ static void rx_complete(struct urb *req)
         dev->stats.rx_errors++;
 resubmit:
         if (page)
-                netdev_free_page(dev, page);
+                put_page(page);
         if (req)
-                rx_submit(pnd, req, GFP_ATOMIC);
+                rx_submit(pnd, req, GFP_ATOMIC | __GFP_COLD);
 }
 
 static int usbpn_close(struct net_device *dev);
@@ -229,7 +229,7 @@ static int usbpn_open(struct net_device *dev)
         for (i = 0; i < rxq_size; i++) {
                 struct urb *req = usb_alloc_urb(0, GFP_KERNEL);
 
-                if (!req || rx_submit(pnd, req, GFP_KERNEL)) {
+                if (!req || rx_submit(pnd, req, GFP_KERNEL | __GFP_COLD)) {
                         usbpn_close(dev);
                         return -ENOMEM;
                 }