linux-kernel - Re: [PATCH v1 11/29] virtio-mem: use "unsigned long" for nr

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Date:   Fri, 16 Oct 2020 14:11:16 +0800
From:   Wei Yang <richard.weiyang@...ux.alibaba.com>
To:     David Hildenbrand <david@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        virtualization@...ts.linux-foundation.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Pankaj Gupta <pankaj.gupta.linux@...il.com>
Subject: Re: [PATCH v1 11/29] virtio-mem: use "unsigned long" for nr_pages
 when fake onlining/offlining

On Mon, Oct 12, 2020 at 02:53:05PM +0200, David Hildenbrand wrote:
>No harm done, but let's be consistent.
>
>Cc: "Michael S. Tsirkin" <mst@...hat.com>
>Cc: Jason Wang <jasowang@...hat.com>
>Cc: Pankaj Gupta <pankaj.gupta.linux@...il.com>
>Signed-off-by: David Hildenbrand <david@...hat.com>

Reviewed-by: Wei Yang <richard.weiyang@...ux.alibaba.com>

>---
> drivers/virtio/virtio_mem.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
>diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c
>index cb2e8f254650..00d1cfca4713 100644
>--- a/drivers/virtio/virtio_mem.c
>+++ b/drivers/virtio/virtio_mem.c
>@@ -766,7 +766,7 @@ static int virtio_mem_memory_notifier_cb(struct notifier_block *nb,
>  * (via generic_online_page()) using PageDirty().
>  */
> static void virtio_mem_set_fake_offline(unsigned long pfn,
>-					unsigned int nr_pages, bool onlined)
>+					unsigned long nr_pages, bool onlined)
> {
> 	for (; nr_pages--; pfn++) {
> 		struct page *page = pfn_to_page(pfn);
>@@ -785,7 +785,7 @@ static void virtio_mem_set_fake_offline(unsigned long pfn,
>  * (via generic_online_page()), clear PageDirty().
>  */
> static void virtio_mem_clear_fake_offline(unsigned long pfn,
>-					  unsigned int nr_pages, bool onlined)
>+					  unsigned long nr_pages, bool onlined)
> {
> 	for (; nr_pages--; pfn++) {
> 		struct page *page = pfn_to_page(pfn);
>@@ -800,10 +800,10 @@ static void virtio_mem_clear_fake_offline(unsigned long pfn,
>  * Release a range of fake-offline pages to the buddy, effectively
>  * fake-onlining them.
>  */
>-static void virtio_mem_fake_online(unsigned long pfn, unsigned int nr_pages)
>+static void virtio_mem_fake_online(unsigned long pfn, unsigned long nr_pages)
> {
> 	const unsigned long max_nr_pages = MAX_ORDER_NR_PAGES;
>-	int i;
>+	unsigned long i;
> 
> 	/*
> 	 * We are always called at least with MAX_ORDER_NR_PAGES
>-- 
>2.26.2

-- 
Wei Yang
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