linux-kernel - [PATCH 2/3] mm/vmscan: use %pe to print PTR

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Message-ID: <94ba6ef88d97eb1a5e20eeab9f913be8fdc46fd5.1763227530.git.chandna.sahil@gmail.com>
Date: Tue, 18 Nov 2025 11:38:50 +0530
From: Sahil Chandna <chandna.sahil@...il.com>
To: akpm@...ux-foundation.org,
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	chengming.zhou@...ux.dev,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc: Sahil Chandna <chandna.sahil@...il.com>
Subject: [PATCH 2/3] mm/vmscan: use %pe to print PTR_ERR() values

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

Signed-off-by: Sahil Chandna <chandna.sahil@...il.com>
---
 mm/vmscan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index b2fc8b626d3d..7d5b41696cc3 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -7500,8 +7500,8 @@ void __meminit kswapd_run(int nid)
 		pgdat->kswapd = kthread_create_on_node(kswapd, pgdat, nid, "kswapd%d", nid);
 		if (IS_ERR(pgdat->kswapd)) {
 			/* failure at boot is fatal */
-			pr_err("Failed to start kswapd on node %d,ret=%ld\n",
-				   nid, PTR_ERR(pgdat->kswapd));
+			pr_err("Failed to start kswapd on node %d,ret=%pe\n",
+				   nid, pgdat->kswapd);
 			BUG_ON(system_state < SYSTEM_RUNNING);
 			pgdat->kswapd = NULL;
 		} else {
-- 
2.50.1