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[96.255.20.138]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-890772346f8sm188449106d6.35.2026.01.14.15.50.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jan 2026 15:50:59 -0800 (PST) From: Gregory Price To: linux-mm@kvack.org Cc: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, kernel-team@meta.com, dan.j.williams@intel.com, vishal.l.verma@intel.com, dave.jiang@intel.com, david@kernel.org, mst@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, osalvador@suse.de, akpm@linux-foundation.org Subject: [PATCH v2 1/5] mm/memory_hotplug: pass online_type to online_memory_block() via arg Date: Wed, 14 Jan 2026 18:50:17 -0500 Message-ID: <20260114235022.3437787-2-gourry@gourry.net> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260114235022.3437787-1-gourry@gourry.net> References: <20260114235022.3437787-1-gourry@gourry.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: ocgauxufuacbz4wo61t645dq8r8m9zy7 X-Rspamd-Queue-Id: 2193C140009 X-Rspamd-Server: rspam04 X-HE-Tag: 1768434660-757358 X-HE-Meta: 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 Kdt5Eo3U bB7YZLI3XvfHBmrbgw62To1lVnOeDsf+Iaof0Lth+YK2CuvN3I2PvuclbDSuBXbKbg5EXJDfIub8lRjb/Rtli9qTOrOEN7NqzIvySoyY9pftd5ysbSO3WLbOICQhvI0gkUshfkiez11k1Xo4/CyzV4Oahe53ec84gsUh8YpqjImvHiRHbBdLpXWG0ojuuUCXprjsoNocXvTdFQFpiVvEoM609w+oiH9KfjJu+TyV9pUYUik9nQDGTh344nURAjbvF/NqN7pNGyRh+vAYrzuAF6uKSJsx3LGN/HaQdaf+oto3X5d+TeeCdYAZke3bAmzqCYcPWMGvEuxltzYQm6LLvaSCvO/a3ev9F3F6DxIzmyVLTRtsD8ndF59+tor7yWrrKhuJAfbWiMrDtOFz0qIP/kSEQy4CfY7OJI3Mm2jLPFkL6cnfHJUM9QaXqw+z25rz1xTYR5T61zqxTdz6EQlLzvyWUdA== 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: Modify online_memory_block() to accept the online type through its arg parameter rather than calling mhp_get_default_online_type() internally. This prepares for allowing callers to specify explicit online types. Update the caller in add_memory_resource() to pass the default online type via a local variable. No functional change. Acked-by: David Hildenbrand (Red Hat) Signed-off-by: Gregory Price --- mm/memory_hotplug.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 389989a28abe..5718556121f0 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1337,7 +1337,9 @@ static int check_hotplug_memory_range(u64 start, u64 size) static int online_memory_block(struct memory_block *mem, void *arg) { - mem->online_type = mhp_get_default_online_type(); + int *online_type = arg; + + mem->online_type = *online_type; return device_online(&mem->dev); } @@ -1578,8 +1580,12 @@ int add_memory_resource(int nid, struct resource *res, mhp_t mhp_flags) merge_system_ram_resource(res); /* online pages if requested */ - if (mhp_get_default_online_type() != MMOP_OFFLINE) - walk_memory_blocks(start, size, NULL, online_memory_block); + if (mhp_get_default_online_type() != MMOP_OFFLINE) { + int online_type = mhp_get_default_online_type(); + + walk_memory_blocks(start, size, &online_type, + online_memory_block); + } return ret; error: -- 2.52.0