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Thu, 18 Apr 2024 16:31:34 +0800 Subject: Re: [PATCH v3 04/11] mm: Make page_mapped_in_vma conditional on CONFIG_MEMORY_FAILURE To: "Matthew Wilcox (Oracle)" CC: , Jane Chu , Oscar Salvador References: <20240412193510.2356957-1-willy@infradead.org> <20240412193510.2356957-5-willy@infradead.org> From: Miaohe Lin Message-ID: Date: Thu, 18 Apr 2024 16:31:33 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <20240412193510.2356957-5-willy@infradead.org> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.173.135.154] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To canpemm500002.china.huawei.com (7.192.104.244) X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 85DFD1C001D X-Rspam-User: X-Stat-Signature: tbkj8jq66qmsnorhrnskhdoc75akrwkx X-HE-Tag: 1713429101-359503 X-HE-Meta: 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 eQEBkmgm iNgeLGt07uO4OTJmAplsAjgrzhEyPCO0qeE9oqoDZDFvRzL5ByMwORTMyp5tJUoNlpcCX2BvDY7AXaW/Lj3A0iSxb/vNoyIwFiy8dM20fnRDZgZaWcPF801GxId8iIvkYFGzI4QFNfybAxub/uqbOTx62lx7xq0X7eQdJKfuZ5LRnWlN9occ2XvvMNN5hOE15scjwwv2kPV+T6obQLxhBlH7j2x68KAAYPElLgz80jSxyyu+pscxk6DNLy5QIUVbPkPgZ/wBR1PRd4xIqLIWi6Xhkig== 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: On 2024/4/13 3:35, Matthew Wilcox (Oracle) wrote: > This function is only currently used by the memory-failure code, so > we can omit it if we're not compiling in the memory-failure code. > > Suggested-by: Miaohe Lin > Reviewed-by: Jane Chu > Reviewed-by: Oscar Salvador > Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Miaohe Lin Thanks. . > --- > mm/page_vma_mapped.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c > index c202eab84936..ae5cc42aa208 100644 > --- a/mm/page_vma_mapped.c > +++ b/mm/page_vma_mapped.c > @@ -314,6 +314,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw) > return false; > } > > +#ifdef CONFIG_MEMORY_FAILURE > /** > * page_mapped_in_vma - check whether a page is really mapped in a VMA > * @page: the page to test > @@ -344,3 +345,4 @@ unsigned long page_mapped_in_vma(struct page *page, struct vm_area_struct *vma) > out: > return pvmw.address; > } > +#endif >