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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: quoted-printable X-ClientProxiedBy: SG2P153CA0011.APCP153.PROD.OUTLOOK.COM (2603:1096::21) To SI2PR06MB5140.apcprd06.prod.outlook.com (2603:1096:4:1af::9) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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; 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charset="utf-8" Commit 16f5dfbc851b ("gfp: include __GFP_NOWARN in GFP_NOWAIT") made GFP_NOWAIT implicitly include __GFP_NOWARN. 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 Reviewed-by: Harry Yoo --- 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_spac= e *mapping, pgoff_t index, gfp &=3D ~__GFP_FS; if (fgp_flags & FGP_NOWAIT) { gfp &=3D ~GFP_KERNEL; - gfp |=3D GFP_NOWAIT | __GFP_NOWARN; + gfp |=3D GFP_NOWAIT; } if (WARN_ON_ONCE(!(fgp_flags & (FGP_LOCK | FGP_FOR_MMAP)))) fgp_flags |=3D 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 =3D=3D MAX_GATHER_BATCH_COUNT) return false; =20 - batch =3D (void *)__get_free_page(GFP_NOWAIT | __GFP_NOWARN); + batch =3D (void *)__get_free_page(GFP_NOWAIT); if (!batch) return false; =20 @@ -364,7 +364,7 @@ void tlb_remove_table(struct mmu_gather *tlb, void *tab= le) struct mmu_table_batch **batch =3D &tlb->batch; =20 if (*batch =3D=3D NULL) { - *batch =3D (struct mmu_table_batch *)__get_free_page(GFP_NOWAIT | __GFP_= NOWARN); + *batch =3D (struct mmu_table_batch *)__get_free_page(GFP_NOWAIT); if (*batch =3D=3D 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 v= m_area_struct *src) list_for_each_entry_reverse(pavc, &src->anon_vma_chain, same_vma) { struct anon_vma *anon_vma; =20 - avc =3D anon_vma_chain_alloc(GFP_NOWAIT | __GFP_NOWARN); + avc =3D anon_vma_chain_alloc(GFP_NOWAIT); if (unlikely(!avc)) { unlock_anon_vma_root(root); root =3D 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 =3D clamp_t(unsigned int, num_possible_cpus(), 1, 128); =20 if (n > 1) { - vn =3D kmalloc_array(n, sizeof(*vn), GFP_NOWAIT | __GFP_NOWARN); + vn =3D kmalloc_array(n, sizeof(*vn), GFP_NOWAIT); if (vn) { /* Node partition is 16 pages. */ vmap_zone_size =3D (1 << 4) * PAGE_SIZE; --=20 2.34.1