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Wed, 21 Jan 2026 11:48:22 +0800 From: zenghongling To: akpm@linux-foundation.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, hannes@cmpxchg.org, david@kernel.org, mhocko@kernel.org, zhengqi.arch@bytedance.com, shakeel.butt@linux.dev, lorenzo.stoakes@oracle.com, yosry.ahmed@linux.dev, nphamcs@gmail.com, chengming.zhou@linux.dev Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, zhongling0719@126.com, zenghongling Subject: [PATCH] mm: Use %pe format specifier for error pointers Date: Wed, 21 Jan 2026 11:48:17 +0800 Message-Id: <20260121034817.607435-1-zenghongling@kylinos.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Stat-Signature: 838f7kp56pra4at7b7m5jjz1dj9pgdmk X-Rspamd-Queue-Id: E3C88160006 X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1768967309-717692 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Convert error logging throughout the MM subsystem to use the %pe format specifier instead of PTR_ERR() with integer format specifiers. Found by: ---- ./zswap.c:753:20-27: WARNING: Consider using %pe to print PTR_ERR() ./vmscan.c:7504:12-19: WARNING: Consider using %pe to print PTR_ERR() --- Signed-off-by: zenghongling --- mm/vmscan.c | 4 ++-- mm/zswap.c | 4 ++-- 2 files changed, 4 insertions(+), 4 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 { 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; } -- 2.25.1