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Tue, 10 Dec 2019 07:46:34 -0800 (PST) Received: from localhost.corp.microsoft.com ([167.220.255.5]) by smtp.googlemail.com with ESMTPSA id k13sm4113815pfp.48.2019.12.10.07.46.30 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 10 Dec 2019 07:46:33 -0800 (PST) From: lantianyu1986@gmail.com X-Google-Original-From: Tianyu.Lan@microsoft.com To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, sashal@kernel.org, akpm@linux-foundation.org, michael.h.kelley@microsoft.com Cc: Tianyu Lan , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, vkuznets@redhat.com, eric.devolder@oracle.com Subject: [RFC PATCH 2/4] mm/hotplug: Expose is_mem_section_removable() and offline_pages() Date: Tue, 10 Dec 2019 23:46:09 +0800 Message-Id: <20191210154611.10958-3-Tianyu.Lan@microsoft.com> X-Mailer: git-send-email 2.14.5 In-Reply-To: <20191210154611.10958-1-Tianyu.Lan@microsoft.com> References: <20191210154611.10958-1-Tianyu.Lan@microsoft.com> 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: From: Tianyu Lan Hyper-V driver adds memory hot remove function and will use these interfaces in Hyper-V balloon driver which may be built as a module. Expose these function. Signed-off-by: Tianyu Lan --- mm/memory_hotplug.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 07e5c67f48a8..4b358ebcc3d7 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1191,6 +1191,7 @@ bool is_mem_section_removable(unsigned long start_pfn, unsigned long nr_pages) /* All pageblocks in the memory block are likely to be hot-removable */ return true; } +EXPORT_SYMBOL_GPL(is_mem_section_removable); /* * Confirm all pages in a range [start, end) belong to the same zone. @@ -1612,6 +1613,7 @@ int offline_pages(unsigned long start_pfn, unsigned long nr_pages) { return __offline_pages(start_pfn, start_pfn + nr_pages); } +EXPORT_SYMBOL_GPL(offline_pages); static int check_memblock_offlined_cb(struct memory_block *mem, void *arg) { -- 2.14.5