linux-kernel - [PATCH] dma/pool: eliminate alloc_pages warning in atomic_pool

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Message-ID: <20251202152810.142370-1-dave.kleikamp@oracle.com>
Date: Tue,  2 Dec 2025 09:28:10 -0600
From: Dave Kleikamp <dave.kleikamp@...cle.com>
To: Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>
Cc: iommu@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH] dma/pool: eliminate alloc_pages warning in atomic_pool_expand

atomic_pool_expand iterately tries the allocation while decrementing the
page order. There is no need to issue a warning if an attempted
allocation fails.

Signed-off-by: Dave Kleikamp <dave.kleikamp@...cle.com>
---
 kernel/dma/pool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/dma/pool.c b/kernel/dma/pool.c
index ee45dee33d49..26392badc36b 100644
--- a/kernel/dma/pool.c
+++ b/kernel/dma/pool.c
@@ -93,7 +93,7 @@ static int atomic_pool_expand(struct gen_pool *pool, size_t pool_size,
 			page = dma_alloc_from_contiguous(NULL, 1 << order,
 							 order, false);
 		if (!page)
-			page = alloc_pages(gfp, order);
+			page = alloc_pages(gfp | __GFP_NOWARN, order);
 	} while (!page && order-- > 0);
 	if (!page)
 		goto out;
-- 
2.52.0