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[96.255.20.138]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8c71b859eaesm282041685a.46.2026.01.29.13.04.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Jan 2026 13:04:50 -0800 (PST) From: Gregory Price To: linux-mm@kvack.org Cc: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kernel-team@meta.com, 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, willy@infradead.org, jack@suse.cz, terry.bowman@amd.com, john@jagalactic.com, Oscar Salvador , Andrew Morton , "David Hildenbrand (Red Hat)" Subject: [PATCH 1/9] mm/memory_hotplug: pass online_type to online_memory_block() via arg Date: Thu, 29 Jan 2026 16:04:34 -0500 Message-ID: <20260129210442.3951412-2-gourry@gourry.net> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260129210442.3951412-1-gourry@gourry.net> References: <20260129210442.3951412-1-gourry@gourry.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: ncwhbs4jn7xux9nyfyhzehoy4dwd4rpt X-Rspamd-Queue-Id: 09A1714000A X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1769720691-726702 X-HE-Meta: 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 giZEujEl 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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: 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. Cc: Oscar Salvador Cc: Andrew Morton 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 bc805029da51..87796b617d9e 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