[PATCH v3 2/3] mm/vmscan: use %pe to print error pointers

Sahil Chandna
2025-11-27T05:12:02Z

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: David Hildenbrand (Red Hat) <david@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Sahil Chandna <chandna.sahil@gmail.com>
---
changes since v2:
- Add Acked-by tag
link to v2: https://lore.kernel.org/all/64e15c6b2ce86d7824f54e9e001b6f5b44af48b8.1763796152.git.chandna.sahil@gmail.com/
---
mm/vmscan.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index b2fc8b626d3d..29ed0b304b5c 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