diff mbox series

[v2,net-next,4/4] net: page_pool: simplify page recycling condition tests

Message ID 20210127201031.98544-5-alobakin@pm.me (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: consolidate page_is_pfmemalloc() usage | expand

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netdev/build_32bit success Errors and warnings before: 1 this patch: 1
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 27 lines checked
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netdev/stable success Stable not CCed

Commit Message

Alexander Lobakin Jan. 27, 2021, 8:11 p.m. UTC 
pool_page_reusable() is a leftover from pre-NUMA-aware times. For now,
this function is just a redundant wrapper over page_is_pfmemalloc(),
so Inline it into its sole call site.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
---
 net/core/page_pool.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

Comments

David Rientjes Jan. 28, 2021, 10:49 p.m. UTC | #1 
On Wed, 27 Jan 2021, Alexander Lobakin wrote:

> pool_page_reusable() is a leftover from pre-NUMA-aware times. For now,
> this function is just a redundant wrapper over page_is_pfmemalloc(),
> so Inline it into its sole call site.
> 
> Signed-off-by: Alexander Lobakin <alobakin@pm.me>
> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

Acked-by: David Rientjes <rientjes@google.com>
diff mbox series

Patch

diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index f3c690b8c8e3..ad8b0707af04 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -350,14 +350,6 @@  static bool page_pool_recycle_in_cache(struct page *page,
 	return true;
 }
 
-/* page is NOT reusable when:
- * 1) allocated when system is under some pressure. (page_is_pfmemalloc)
- */
-static bool pool_page_reusable(struct page_pool *pool, struct page *page)
-{
-	return !page_is_pfmemalloc(page);
-}
-
 /* If the page refcnt == 1, this will try to recycle the page.
  * if PP_FLAG_DMA_SYNC_DEV is set, we'll try to sync the DMA area for
  * the configured size min(dma_sync_size, pool->max_len).
@@ -373,9 +365,11 @@  __page_pool_put_page(struct page_pool *pool, struct page *page,
 	 * regular page allocator APIs.
 	 *
 	 * refcnt == 1 means page_pool owns page, and can recycle it.
+	 *
+	 * page is NOT reusable when allocated when system is under
+	 * some pressure. (page_is_pfmemalloc)
 	 */
-	if (likely(page_ref_count(page) == 1 &&
-		   pool_page_reusable(pool, page))) {
+	if (likely(page_ref_count(page) == 1 && !page_is_pfmemalloc(page))) {
 		/* Read barrier done in page_ref_count / READ_ONCE */
 
 		if (pool->p.flags & PP_FLAG_DMA_SYNC_DEV)