{"width":"100%","published":"2015-05-24 12:20:44","author_name":"masami256","url":"https://kernhack.hatenablog.com/entry/2015/05/24/122044","image_url":"http://ecx.images-amazon.com/images/I/51SDwVGgwHL.jpg","title":"get_page_from_freelist()\u306e\u51e6\u7406","author_url":"https://blog.hatena.ne.jp/masami256/","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkernhack.hatenablog.com%2Fentry%2F2015%2F05%2F24%2F122044\" title=\"get_page_from_freelist()\u306e\u51e6\u7406 - \u03c6(\u30fb\u30fb*)\u309e \uff73\uff70\uff9d\u3000\u30ab\u30fc\u30cd\u30eb\u3068\u304b\u5f04\u3063\u305f\u308a\u306e\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["linux","kernel"],"provider_url":"https://hatena.blog","version":"1.0","blog_title":"\u03c6(\u30fb\u30fb*)\u309e \uff73\uff70\uff9d\u3000\u30ab\u30fc\u30cd\u30eb\u3068\u304b\u5f04\u3063\u305f\u308a\u306e\u30e1\u30e2","provider_name":"Hatena Blog","blog_url":"https://kernhack.hatenablog.com/","height":"190","description":"\u524d\u56de\u306f__alloc_pages_nodemask()\u3092\u898b\u305f\u306e\u3067\u3001\u4eca\u56de\u306f\u305d\u3053\u304b\u3089\u547c\u3070\u308c\u3001\u5b9f\u969b\u306ballocation\u3092\u884c\u3046\u90e8\u5206\u306e get_page_from_freelist()\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002 \u57fa\u672c\u7684\u306a\u6d41\u308c\u306f\u3001 bool\u306e\u5909\u6570consider_zone_dirty\u306balloc_flags\u3068gfp\u30d5\u30e9\u30b0\u306e\u5024\u304b\u3089\u771f\u507d\u5024\u3092\u6c7a\u3081\u308b \u3053\u3053\u3067gfp\u30d5\u30e9\u30b0\u306b__GFP_WRITE\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u30c1\u30a7\u30c3\u30af\u304c\u3042\u308a\u3001\u3053\u308c\u306f\u300cmm: try to distribute dirty pages fairly across zones\u300d\u3068\u3044\u3046patch\u3067\u8ffd\u52a0\u3055\u308c\u305f\u3082\u306e\u3067\u3001page\u304callocation\u5f8c\u3001\u3059\u3050\u2026"}