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Mon, 20 Jan 2020 06:19:15 -0800 (PST) Received: from N-20L6PF1KTYA2 ([131.228.2.20]) by smtp.gmail.com with ESMTPSA id d24sm2955269lfl.58.2020.01.20.06.19.11 (version=TLS1_2 cipher=AES128-GCM-SHA256 bits=128/128); Mon, 20 Jan 2020 06:19:14 -0800 (PST) Date: Mon, 20 Jan 2020 22:19:11 +0800 From: "Li Xinhai" To: anshuman.khandual , mhocko Cc: "linux-mm@kvack.org" , akpm , "Mike Kravetz" Subject: Re: [PATCH v4] mm/mempolicy,hugetlb: Checking hstate for hugetlbfs page in vma_migratable References: <1579147885-23511-1-git-send-email-lixinhai.lxh@gmail.com>, <20200116095614.GO19428@dhcp22.suse.cz>, <20200116215032206994102@gmail.com>, <20200116151803.GV19428@dhcp22.suse.cz>, X-Priority: 3 X-GUID: 47798B25-BB76-4AD1-8228-B80D83804BC6 X-Has-Attach: no X-Mailer: Foxmail 7.2.13.365[cn] Mime-Version: 1.0 Message-ID: <20200120221908768379320@gmail.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 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: T24gMjAyMC0wMS0yMMKgYXQgMTc6NTHCoEFuc2h1bWFuIEtoYW5kdWFswqB3cm90ZToKPgo+Cj5P biAwMS8xNi8yMDIwIDA4OjQ4IFBNLCBNaWNoYWwgSG9ja28gd3JvdGU6Cj4+IE9uIFRodSAxNi0w MS0yMCAyMTo1MDozNCwgTGkgWGluaGFpIHdyb3RlOgo+Pj4gT24gMjAyMC0wMS0xNsKgYXQgMTc6 NTbCoE1pY2hhbCBIb2Nrb8Kgd3JvdGU6Cj4+Pj4gT24gVGh1IDE2LTAxLTIwIDA0OjExOjI1LCBM aSBYaW5oYWkgd3JvdGU6Cj4+Pj4+IENoZWNraW5nIGhzdGF0ZSBhdCBlYXJseSBwaGFzZSB3aGVu IGlzb2xhdGluZyBwYWdlLCBpbnN0ZWFkIG9mIGR1cmluZwo+Pj4+PiB1bm1hcCBhbmQgbW92ZSBw aGFzZSwgdG8gYXZvaWQgdXNlbGVzcyBpc29sYXRpb24uCj4+Pj4KPj4+PiBDb3VsZCB5b3UgYmUg bW9yZSBzcGVjaWZpYyB3aGF0IHlvdSBtZWFuIGJ5IGlzb2xhdGlvbiBhbmQgd2h5IGRvZXMgaXQK Pj4+PiBtYXR0ZXI/IFRoZSBwYXRjaCBkZXNjcmlwdGlvbiBzaG91bGQgcmVhbGx5IGV4cGxhaW4g X3doeV8gdGhlIGNoYW5nZSBpcwo+Pj4+IG5lZWRlZCBvciBkZXNpcmFibGUuCj4+Pgo+Pj4gVGhl IGNoYW5nZWxvZyBjYW4gYmUgaW1wcm92ZWQ6Cj4+Pgo+Pj4gdm1hX21pZ3JhdGFibGUoKSBpcyBj YWxsZWQgdG8gY2hlY2sgaWYgcGFnZXMgaW4gdm1hIGNhbiBiZSBtaWdyYXRlZAo+Pj4gYmVmb3Jl IGdvIGFoZWFkIHRvIGlzb2xhdGUsIHVubWFwIGFuZCBtb3ZlIHBhZ2VzLiBGb3IgaHVnZXRsYiBw YWdlcywKPj4+IGh1Z2VwYWdlX21pZ3JhdGlvbl9zdXBwb3J0ZWQoc3RydWN0IGhzdGF0ZSAqaCkg aXMgb25lIGZhY3RvciB3aGljaAo+Pj4gZGVjaWRlIGlmIG1pZ3JhdGlvbiBpcyBzdXBwb3J0ZWQu IEluIGN1cnJlbnQgY29kZSwgdGhpcyBmdW5jdGlvbiBpcyBjYWxsZWQKPj4+IGZyb23CoHVubWFw X2FuZF9tb3ZlX2h1Z2VfcGFnZSgpLCBhZnRlciBpc29sYXRpbmcgcGFnZSBoYXMKPj4+IGNvbXBs ZXRlZC4KPj4+IFRoaXMgcGF0Y2ggY2hlY2tzIGhzdGF0ZSBmcm9tIHZtYV9taWdyYXRhYmxlKCkg YW5kIGF2b2lkcyBpc29sYXRpbmcgcGFnZXMKPj4+IHdoaWNoIGFyZSBub3Qgc3VwcG9ydGVkLgo+ Pgo+PiBUaGlzIHN0aWxsIGV4cGxhaW5zIHdoYXQgYnV0IG5vdCB3aHkgdGhpcyBpcyByZWxldmFu dC4gSWYgYnkgaXNvbGF0aW5nCj4+IHBhZ2VzIHlvdSBtZWFuIGlzb2xhdGVfbHJ1X3BhZ2UgdGhl biB0aGlzIHJlYWxseSBhIG5vb3AgZm9yIGh1Z2V0bGIKPj4gcGFnZXMuIE9yIGRvIEkgc3RpbGwg bWlzcmVhZCB5b3VyIGNoYW5nZWxvZz8KPgo+dW5tYXBfYW5kX21vdmVfaHVnZXBhZ2UoKSBhYm9y dHMgbWlncmF0aW5nIGEgSHVnZVRMQiBwYWdlIChmcm9tIHRoZSBsaXN0KQo+aWYgaXQncyBjb3Jy ZXNwb25kaW5nIGhzdGF0ZSBkb2VzIG5vdCBzdXBwb3J0IG1pZ3JhdGlvbi4gSUlVQyB0aGUgY3Vy cmVudAo+cHJvcG9zYWwgd2lsbCBlbmFibGUgZWFybHkgYmFpbCBvdXQgYW5kIHByZXZlbnQgbWln cmF0aW9uIHZpYSBtaWdyYXRlX3BhZ2VzKCkKPmF0IGEgbXVjaCBoaWdoZXIgbGV2ZWwgbGlrZSBt YmluZCgpIGFuZCBvdGhlciBzeXN0ZW0gY2FsbHMgaWYgY29ycmVzcG9uZGluZwo+Vk1BIGlzIEh1 Z2VUTEIgYnV0IGl0J3MgaHN0YXRlIGxhY2tzIG1pZ3JhdGlvbiBzdXBwb3J0LiBUaGlzIHNob3Vs ZCBwcm9iYWJseQo+c2F2ZSBzb21lIGN5Y2xlcyBmb3IgSHVnZVRMQiBWTUFzLiAKClRoYW5rcyBm b3IgY29tbWVudHMuIFllc++8jHRoaXMgcGF0Y2ggaXMgZm9yIGVuYWJsZSBlYXJseSBiYWlsIG91 dC4=