linux-kernel - [PATCH v2 3/3] mm/zswap: use %pe to print error pointers

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Message-ID: <0c00ceedce6e0d9aed35cee5faf15fd9126a1f70.1763796152.git.chandna.sahil@gmail.com>
Date: Sun, 23 Nov 2025 08:34:18 +0530
From: Sahil Chandna <chandna.sahil@...il.com>
To: akpm@...ux-foundation.org,
	david@...hat.com,
	lorenzo.stoakes@...cle.com,
	mhocko@...e.com,
	vbabka@...e.cz,
	rppt@...nel.org,
	surenb@...gle.com,
	hannes@...xchg.org,
	shakeel.butt@...ux.dev,
	zhengqi.arch@...edance.com,
	Liam.Howlett@...cle.com,
	weixugc@...gle.com,
	axelrasmussen@...gle.com,
	yuanchu@...gle.com,
	yosry.ahmed@...ux.dev,
	nphamcs@...il.com,
	chengming.zhou@...ux.dev,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc: Sahil Chandna <chandna.sahil@...il.com>,
	SeongJae Park <sj@...nel.org>
Subject: [PATCH v2 3/3] mm/zswap: use %pe to print error pointers

Use the %pe printk format specifier to report error pointers directly
instead of printing PTR_ERR() as a long value. This improves clarity,
produces more readable error messages.

This instance was flagged by the Coccinelle script
(misc/ptr_err_to_pe.cocci) as an opportunity to adopt %pe.

Found by: make coccicheck MODE=report M=mm/
No functional change intended.

Acked-by: Yosry Ahmed <yosry.ahmed@...ux.dev>
Acked-by: Nhat Pham <nphamcs@...il.com>
Reviewed-by: SeongJae Park <sj@...nel.org>
Signed-off-by: Sahil Chandna <chandna.sahil@...il.com>
---
 mm/zswap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/zswap.c b/mm/zswap.c
index c1af782e54ec..c35604db32ad 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -749,8 +749,8 @@ static int zswap_cpu_comp_prepare(unsigned int cpu, struct hlist_node *node)
 
 	acomp = crypto_alloc_acomp_node(pool->tfm_name, 0, 0, cpu_to_node(cpu));
 	if (IS_ERR(acomp)) {
-		pr_err("could not alloc crypto acomp %s : %ld\n",
-				pool->tfm_name, PTR_ERR(acomp));
+		pr_err("could not alloc crypto acomp %s : %pe\n",
+				pool->tfm_name, acomp);
 		ret = PTR_ERR(acomp);
 		goto fail;
 	}
-- 
2.50.1