Commit f87238d3 authored by Haiyang Zhang's avatar Haiyang Zhang Committed by David S. Miller

hv_netvsc: Remove unnecessary round_up for recv_completion_cnt

The vzalloc_node(), already rounds the total size to whole pages, and
sizeof(u64) is smaller than sizeof(struct recv_comp_data). So
round_up of recv_completion_cnt is not necessary, and may cause extra
memory allocation.

To save memory, remove this unnecessary round_up for recv_completion_cnt.
Signed-off-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d9679cd9
......@@ -388,10 +388,11 @@ static int netvsc_init_buf(struct hv_device *device,
net_device->recv_section_size = resp->sections[0].sub_alloc_size;
net_device->recv_section_cnt = resp->sections[0].num_sub_allocs;
/* Setup receive completion ring */
net_device->recv_completion_cnt
= round_up(net_device->recv_section_cnt + 1,
PAGE_SIZE / sizeof(u64));
/* Setup receive completion ring.
* Add 1 to the recv_section_cnt because at least one entry in a
* ring buffer has to be empty.
*/
net_device->recv_completion_cnt = net_device->recv_section_cnt + 1;
ret = netvsc_alloc_recv_comp_ring(net_device, 0);
if (ret)
goto cleanup;
......
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