diff mbox series

[v2,11/24] page_pool: Convert page_pool_empty_ring() to use netmem

Message ID 20230105214631.3939268-12-willy@infradead.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series Split netmem from struct page | expand

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netdev/build_32bit success Errors and warnings before: 2 this patch: 2
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Commit Message

Matthew Wilcox Jan. 5, 2023, 9:46 p.m. UTC 
Retrieve a netmem from the ptr_ring instead of a page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 net/core/page_pool.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Comments

Jesper Dangaard Brouer Jan. 6, 2023, 3:22 p.m. UTC | #1 
On 05/01/2023 22.46, Matthew Wilcox (Oracle) wrote:
> Retrieve a netmem from the ptr_ring instead of a page.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> ---
>   net/core/page_pool.c | 10 +++++-----
>   1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/net/core/page_pool.c b/net/core/page_pool.c
> index e727a74504c2..0212244e07e7 100644
> --- a/net/core/page_pool.c
> +++ b/net/core/page_pool.c
> @@ -755,16 +755,16 @@ EXPORT_SYMBOL(page_pool_alloc_frag);
>   
>   static void page_pool_empty_ring(struct page_pool *pool)
>   {
> -	struct page *page;
> +	struct netmem *nmem;
>   
>   	/* Empty recycle ring */
> -	while ((page = ptr_ring_consume_bh(&pool->ring))) {
> +	while ((nmem = ptr_ring_consume_bh(&pool->ring)) != NULL) {
>   		/* Verify the refcnt invariant of cached pages */
> -		if (!(page_ref_count(page) == 1))
> +		if (netmem_ref_count(nmem) != 1)
>   			pr_crit("%s() page_pool refcnt %d violation\n",
> -				__func__, page_ref_count(page));
> +				__func__, netmem_ref_count(nmem));
>   
> -		page_pool_return_page(pool, page);
> +		page_pool_return_netmem(pool, nmem);
>   	}
>

I like the changes as it makes code more human readable :-)

Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Ilias Apalodimas Jan. 10, 2023, 10:38 a.m. UTC | #2 
On Thu, Jan 05, 2023 at 09:46:18PM +0000, Matthew Wilcox (Oracle) wrote:
> Retrieve a netmem from the ptr_ring instead of a page.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> ---
>  net/core/page_pool.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/net/core/page_pool.c b/net/core/page_pool.c
> index e727a74504c2..0212244e07e7 100644
> --- a/net/core/page_pool.c
> +++ b/net/core/page_pool.c
> @@ -755,16 +755,16 @@ EXPORT_SYMBOL(page_pool_alloc_frag);
>
>  static void page_pool_empty_ring(struct page_pool *pool)
>  {
> -	struct page *page;
> +	struct netmem *nmem;
>
>  	/* Empty recycle ring */
> -	while ((page = ptr_ring_consume_bh(&pool->ring))) {
> +	while ((nmem = ptr_ring_consume_bh(&pool->ring)) != NULL) {
>  		/* Verify the refcnt invariant of cached pages */
> -		if (!(page_ref_count(page) == 1))
> +		if (netmem_ref_count(nmem) != 1)
>  			pr_crit("%s() page_pool refcnt %d violation\n",
> -				__func__, page_ref_count(page));
> +				__func__, netmem_ref_count(nmem));
>
> -		page_pool_return_page(pool, page);
> +		page_pool_return_netmem(pool, nmem);
>  	}
>  }
>
> --
> 2.35.1
>

Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff mbox series

Patch

diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index e727a74504c2..0212244e07e7 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -755,16 +755,16 @@  EXPORT_SYMBOL(page_pool_alloc_frag);
 
 static void page_pool_empty_ring(struct page_pool *pool)
 {
-	struct page *page;
+	struct netmem *nmem;
 
 	/* Empty recycle ring */
-	while ((page = ptr_ring_consume_bh(&pool->ring))) {
+	while ((nmem = ptr_ring_consume_bh(&pool->ring)) != NULL) {
 		/* Verify the refcnt invariant of cached pages */
-		if (!(page_ref_count(page) == 1))
+		if (netmem_ref_count(nmem) != 1)
 			pr_crit("%s() page_pool refcnt %d violation\n",
-				__func__, page_ref_count(page));
+				__func__, netmem_ref_count(nmem));
 
-		page_pool_return_page(pool, page);
+		page_pool_return_netmem(pool, nmem);
 	}
 }