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Howlett" , Vlastimil Babka , Harry Yoo , Uladzislau Rezki , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Cc: Qianfeng Rong Subject: [PATCH] mm: remove redundant __GFP_NOWARN Date: Tue, 12 Aug 2025 17:57:46 +0800 Message-Id: <20250812095747.121135-1-rongqianfeng@vivo.com> X-Mailer: git-send-email 2.34.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SG2P153CA0011.APCP153.PROD.OUTLOOK.COM (2603:1096::21) To SI2PR06MB5140.apcprd06.prod.outlook.com (2603:1096:4:1af::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SI2PR06MB5140:EE_|TYZPR06MB5370:EE_ X-MS-Office365-Filtering-Correlation-Id: 65a7b570-2dbf-47fb-dcb5-08ddd986b6ea X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|52116014|376014|7416014|38350700014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?VkR8Xd1vSgVjwtr8sRRoS6ZHVEjTZxSQCiqg4XkngReb3IwPFzRU4wrpvB7B?= =?us-ascii?Q?K/pbTC24bNUDdA2aglO9aDTsXr0cuZkxu1Zs0LKZ5/bvegXrcpqCtDMvnDvh?= =?us-ascii?Q?8ojC9PR9/96mNM8QEAjclkWAzCv7MCtFcLdbQNDzo9oijsO4MdTzHiIKWTuf?= =?us-ascii?Q?tYPBSNYs4YuwULg61rYwkpbBj+qSicSDUxwsGehLpI0jVGl3NSa3JS26vgop?= =?us-ascii?Q?eJm3JGwL7pxicdTeX5kuWie9nkiCh6sP4mG2mLMy5m7h/zO38Cd6ql2xF2/U?= =?us-ascii?Q?Quxf4Fa1TuBPmMXeExStmdYqVb0XNGbdIMiKrZvqWwl03GFrAJUv84erbz+9?= =?us-ascii?Q?D5Ah2QAYo7xQXkzz0BQ4xn81KjoDs36f1rFd9LD14J9tZ7BWt90UJ1TVqvWz?= =?us-ascii?Q?Mbni28M65C15o9X4hEPwwrVMIvBMj6glgYLH9FjL2Vupr9wN4tbWUpehdpgs?= =?us-ascii?Q?q4wceAfCGa9kIhPidLpsvFIwKMV8jgVTdaGRBpmQixkWSEBQHktTfwY9JRAr?= =?us-ascii?Q?J73VEmvh5jK32JT7jrTB6WeX1Pdj5M377nOyPen2vd4gISxq63tlRmqRU7A6?= =?us-ascii?Q?QHqIG9bvvc7mikhiVXvh5QjI36iYGIDq4LMOEFueyw5H+FGUGzj4jP77sGTj?= =?us-ascii?Q?KL6RtKV20cOfw+r3MOhgPAZn1dynydGqXcqvK4CXoNw5ggfXttKWp4GVjwOv?= =?us-ascii?Q?hqa5HDdOarZIOsUZb3L4Mq9P6teE2mjNOEEnGEWyjCcbd8T1vnjOQzBQzlED?= =?us-ascii?Q?e0wt64A39yyk1BRuzxfwwfoSW33FaS+hxsFYJO5w7tHV8bLdblmX8bVKHgG7?= =?us-ascii?Q?kz0/DHvGq1yi46HcjwAtWe1fVEIB85laREBCeObieFyLqAq6HkT/j18rqHbv?= =?us-ascii?Q?Z5cDMgdLPdajc2H5tB/PsAOc+Y9U8BDOPxtZQw/v0h6jxZsWW1Sld9cpyFAH?= =?us-ascii?Q?aeZLlebQjGcyVipJImVBikCqE5FqypvmOuwT7KpXsJ74IKmMuJMfYxJEpgx/?= =?us-ascii?Q?uCfFs4tzQbr7Y76AXZr/Ru4EQhQVhO+PHX5JtaG2cviod+FYxzN4co/CciV7?= =?us-ascii?Q?bcOPtNlhulqXZ7YIRf+BH8ZcSR2IEkEvwpCVZkzLI+ctW5OePZbutZklzwZ7?= =?us-ascii?Q?VK1/QqLQHTpxP5Zy/onCERwzucZrulDSV57XPB7mgG5NwP9zBsX0GmjCoywn?= =?us-ascii?Q?S11Jerv98yBddrD+uFqx6F4sr24ZyeCOJrmGR916brSBaAM+r6jvAisxB58I?= =?us-ascii?Q?jxnzNT9+IwPQm20uQJrZQYW6y6ZTL6Qr/qQeX1k3LAvktMWs+1lekLguOQ/+?= =?us-ascii?Q?9p2P0VrSWNkWKu9XVST5465ecB5aaP93ENvMQhxIA/+taOki1FRwlm4iFRqD?= =?us-ascii?Q?bveaoay1Q93KOFsM0BHCn6YVHc29Qfts6AbDvCDDC7LKLc5shU1HqoCBY9SD?= =?us-ascii?Q?XdXGTF/PV/oiDS0Limd+sjPke5t7pIuuVNDDmTt2OKC94K2sfoZ4UrLBOdTh?= =?us-ascii?Q?EAGLKvYEO1z+whE=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SI2PR06MB5140.apcprd06.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(52116014)(376014)(7416014)(38350700014)(921020);DIR:OUT;SFP:1101; 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Therefore, explicit __GFP_NOWARN combined with GFP_NOWAIT (e.g., `GFP_NOWAIT | __GFP_NOWARN`) is now redundant. Let's clean up these redundant flags across subsystems. No functional changes. Signed-off-by: Qianfeng Rong --- mm/filemap.c | 2 +- mm/mmu_gather.c | 4 ++-- mm/rmap.c | 2 +- mm/vmalloc.c | 2 +- 4 files changed, 5 insertions(+), 5 deletions(-) diff --git a/mm/filemap.c b/mm/filemap.c index 4e5c9544fee4..c21e98657e0b 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1961,7 +1961,7 @@ struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index, gfp &= ~__GFP_FS; if (fgp_flags & FGP_NOWAIT) { gfp &= ~GFP_KERNEL; - gfp |= GFP_NOWAIT | __GFP_NOWARN; + gfp |= GFP_NOWAIT; } if (WARN_ON_ONCE(!(fgp_flags & (FGP_LOCK | FGP_FOR_MMAP)))) fgp_flags |= FGP_LOCK; diff --git a/mm/mmu_gather.c b/mm/mmu_gather.c index b49cc6385f1f..374aa6f021c6 100644 --- a/mm/mmu_gather.c +++ b/mm/mmu_gather.c @@ -32,7 +32,7 @@ static bool tlb_next_batch(struct mmu_gather *tlb) if (tlb->batch_count == MAX_GATHER_BATCH_COUNT) return false; - batch = (void *)__get_free_page(GFP_NOWAIT | __GFP_NOWARN); + batch = (void *)__get_free_page(GFP_NOWAIT); if (!batch) return false; @@ -364,7 +364,7 @@ void tlb_remove_table(struct mmu_gather *tlb, void *table) struct mmu_table_batch **batch = &tlb->batch; if (*batch == NULL) { - *batch = (struct mmu_table_batch *)__get_free_page(GFP_NOWAIT | __GFP_NOWARN); + *batch = (struct mmu_table_batch *)__get_free_page(GFP_NOWAIT); if (*batch == NULL) { tlb_table_invalidate(tlb); tlb_remove_table_one(table); diff --git a/mm/rmap.c b/mm/rmap.c index 568198e9efc2..7baa7385e1ce 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -285,7 +285,7 @@ int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src) list_for_each_entry_reverse(pavc, &src->anon_vma_chain, same_vma) { struct anon_vma *anon_vma; - avc = anon_vma_chain_alloc(GFP_NOWAIT | __GFP_NOWARN); + avc = anon_vma_chain_alloc(GFP_NOWAIT); if (unlikely(!avc)) { unlock_anon_vma_root(root); root = NULL; diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 6dbcdceecae1..90c3de1a0417 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -5177,7 +5177,7 @@ static void vmap_init_nodes(void) int n = clamp_t(unsigned int, num_possible_cpus(), 1, 128); if (n > 1) { - vn = kmalloc_array(n, sizeof(*vn), GFP_NOWAIT | __GFP_NOWARN); + vn = kmalloc_array(n, sizeof(*vn), GFP_NOWAIT); if (vn) { /* Node partition is 16 pages. */ vmap_zone_size = (1 << 4) * PAGE_SIZE; -- 2.34.1