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[96.255.20.138]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4eda57ad8e6sm3293421cf.27.2025.11.07.14.50.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Nov 2025 14:50:05 -0800 (PST) From: Gregory Price To: linux-mm@kvack.org Cc: linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev, linux-fsdevel@vger.kernel.org, cgroups@vger.kernel.org, dave@stgolabs.net, jonathan.cameron@huawei.com, dave.jiang@intel.com, alison.schofield@intel.com, vishal.l.verma@intel.com, ira.weiny@intel.com, dan.j.williams@intel.com, longman@redhat.com, akpm@linux-foundation.org, david@redhat.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, osalvador@suse.de, ziy@nvidia.com, matthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, apopple@nvidia.com, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, tj@kernel.org, hannes@cmpxchg.org, mkoutny@suse.com, kees@kernel.org, muchun.song@linux.dev, roman.gushchin@linux.dev, shakeel.butt@linux.dev, rientjes@google.com, jackmanb@google.com, cl@gentwo.org, harry.yoo@oracle.com, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, zhengqi.arch@bytedance.com, yosry.ahmed@linux.dev, nphamcs@gmail.com, chengming.zhou@linux.dev, fabio.m.de.francesco@linux.intel.com, rrichter@amd.com, ming.li@zohomail.com, usamaarif642@gmail.com, brauner@kernel.org, oleg@redhat.com, namcao@linutronix.de, escape@linux.alibaba.com, dongjoo.seo1@samsung.com Subject: [RFC PATCH 1/9] gfp: Add GFP_PROTECTED for protected-node allocations Date: Fri, 7 Nov 2025 17:49:46 -0500 Message-ID: <20251107224956.477056-2-gourry@gourry.net> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251107224956.477056-1-gourry@gourry.net> References: <20251107224956.477056-1-gourry@gourry.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 9E7F7C000D X-Stat-Signature: 3e8koebooip6ndyg46f3tpa898cda48e X-HE-Tag: 1762555807-505013 X-HE-Meta: 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 MAxaE5hR Bjq18hvuTVCEU2FzgnTa0sHqyUxIY40PQYSmiL2+eRdRW8t3DASU5Y4K/zAn6HylXzhh0aagB6UxoBoZTx08ZY+oYyepO2bKEHdk3kWKjiMsW66AYIBitKxviVswT5WrHY/zyDfqttG+QXSM8e9bMIaf0Yz4vcmn4ntd/4z8UH9lS1syT6/BCTzwLz1tYFE/uhK6+7zTq/CKqaR5vqAzUiEzvclDCMxjmKClu6b90f5MBgve7uEfpflL5Ow5ClRJv94yIhXxBsU3lR2Ibms2OVkv8CAHiX5tMX5RRQ9RRL3NIoa9zBTVKqNpg08fVsGboU5H6OzpVA+p7EIl7Dfnfcqy6XCGuBXmnA6mZOpRmIdqRTJWM+qUJ78PAbrdz1zdgL5YUrGtsi0E/GWGj3TTsAxqS4XjmBH1oWzbu7TBrljt1mkYnh96vge/hIyOVDQAOBtfS1O5+kIR0yW8= 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: GFP_PROTECTED changes the nodemask checks when ALLOC_CPUSET is set in the page allocator to check the full set of nodes in cpuset->mems_allowed rather than just sysram nodes in task->mems_default. Signed-off-by: Gregory Price --- include/linux/gfp_types.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/gfp_types.h b/include/linux/gfp_types.h index 65db9349f905..2c0c250ade3a 100644 --- a/include/linux/gfp_types.h +++ b/include/linux/gfp_types.h @@ -58,6 +58,7 @@ enum { #ifdef CONFIG_SLAB_OBJ_EXT ___GFP_NO_OBJ_EXT_BIT, #endif + ___GFP_PROTECTED_BIT, ___GFP_LAST_BIT }; @@ -103,6 +104,7 @@ enum { #else #define ___GFP_NO_OBJ_EXT 0 #endif +#define ___GFP_PROTECTED BIT(___GFP_PROTECTED_BIT) /* * Physical address zone modifiers (see linux/mmzone.h - low four bits) @@ -115,6 +117,7 @@ enum { #define __GFP_HIGHMEM ((__force gfp_t)___GFP_HIGHMEM) #define __GFP_DMA32 ((__force gfp_t)___GFP_DMA32) #define __GFP_MOVABLE ((__force gfp_t)___GFP_MOVABLE) /* ZONE_MOVABLE allowed */ +#define __GFP_PROTECTED ((__force gfp_t)___GFP_PROTECTED) /* Protected nodes allowed */ #define GFP_ZONEMASK (__GFP_DMA|__GFP_HIGHMEM|__GFP_DMA32|__GFP_MOVABLE) /** -- 2.51.1