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Thu, 27 Nov 2025 23:02:30 -0800 (PST) From: Sahil Chandna To: akpm@linux-foundation.org, david@redhat.com, lorenzo.stoakes@oracle.com, mhocko@suse.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, hannes@cmpxchg.org, shakeel.butt@linux.dev, zhengqi.arch@bytedance.com, Liam.Howlett@oracle.com, weixugc@google.com, axelrasmussen@google.com, yuanchu@google.com, yosry.ahmed@linux.dev, nphamcs@gmail.com, chengming.zhou@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: david@kernel.org, Sahil Chandna , SeongJae Park Subject: [PATCH v4 2/3] mm/vmscan: use %pe to print error pointers Date: Fri, 28 Nov 2025 12:31:43 +0530 Message-ID: <2c842a64fddeb0fe0cac087783aaedd97edc3191.1764312627.git.chandna.sahil@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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=3Dreport M=3Dmm/ No functional change intended Acked-by: David Hildenbrand (Red Hat) Reviewed-by: SeongJae Park Signed-off-by: Sahil Chandna --- changes since v2: - Add Acked-by tag link to v2: https://lore.kernel.org/all/64e15c6b2ce86d7824f54e9e001b6f5b44a= f48b8.1763796152.git.chandna.sahil@gmail.com/ link to v3: https://lore.kernel.org/all/db049e564cafcb0913bee930d6a577ea430= 44f5b.1764177933.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 =3D 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=3D%ld\n", - nid, PTR_ERR(pgdat->kswapd)); + pr_err("Failed to start kswapd on node %d, ret=3D%pe\n", + nid, pgdat->kswapd); BUG_ON(system_state < SYSTEM_RUNNING); pgdat->kswapd =3D NULL; } else { --=20 2.50.1