From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx112.postini.com [74.125.245.112]) by kanga.kvack.org (Postfix) with SMTP id A2FB06B0031 for ; Mon, 29 Jul 2013 21:27:31 -0400 (EDT) From: Lisa Du Date: Mon, 29 Jul 2013 18:27:26 -0700 Subject: RE: Possible deadloop in direct reclaim? Message-ID: <89813612683626448B837EE5A0B6A7CB3B6301D0B2@SC-VEXCH4.marvell.com> References: <89813612683626448B837EE5A0B6A7CB3B62F8F272@SC-VEXCH4.marvell.com> <000001400d38469d-a121fb96-4483-483a-9d3e-fc552e413892-000000@email.amazonses.com> <89813612683626448B837EE5A0B6A7CB3B62F8F5C3@SC-VEXCH4.marvell.com> <89813612683626448B837EE5A0B6A7CB3B62F8FE33@SC-VEXCH4.marvell.com> <51F69BD7.2060407@gmail.com> In-Reply-To: <51F69BD7.2060407@gmail.com> Content-Language: en-US Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: KOSAKI Motohiro Cc: Christoph Lameter , "linux-mm@kvack.org" , Mel Gorman , Bob Liu , Neil Zhang LS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCkZyb206IEtPU0FLSSBNb3RvaGlybyBbbWFpbHRv Omtvc2FraS5tb3RvaGlyb0BnbWFpbC5jb21dIA0KU2VudDogMjAxM8TqN9TCMzDI1SAwOjQ0DQpU bzogTGlzYSBEdQ0KQ2M6IEtPU0FLSSBNb3RvaGlybzsgQ2hyaXN0b3BoIExhbWV0ZXI7IGxpbnV4 LW1tQGt2YWNrLm9yZzsgTWVsIEdvcm1hbjsgQm9iIExpdQ0KU3ViamVjdDogUmU6IFBvc3NpYmxl IGRlYWRsb29wIGluIGRpcmVjdCByZWNsYWltPw0KDQooNy8yNS8xMyA5OjExIFBNKSwgTGlzYSBE dSB3cm90ZToNCj4gRGVhciBLT1NBS0kNCj4gICAgIEluIG15IHRlc3QsIEkgZGlkbid0IHNldCBj b21wYWN0aW9uLiBNYXliZSBjb21wYWN0aW9uIGlzIGhlbHBmdWwgdG8gYXZvaWQgdGhpcyBpc3N1 ZS4gSSBjYW4gaGF2ZSB0cnkgbGF0ZXIuDQo+ICAgICBJbiBteSBtaW5kIENPTkZJR19DT01QQUNU SU9OIGlzIGFuIG9wdGlvbmFsIGNvbmZpZ3VyYXRpb24gcmlnaHQ/DQoNClJpZ2h0LiBCdXQgaWYg eW91IGRvbid0IHNldCBpdCwgYXBwbGljYXRpb24gbXVzdCBOT1QgdXNlID4xIG9yZGVyIGFsbG9j YXRpb25zLiBJdCBkb2Vzbid0IHdvcmsgYW5kIGl0IGlzIGV4cGVjdGVkDQpyZXN1bHQuDQpUaGF0 J3MgeW91ciBhcHBsaWNhdGlvbiBtaXN0YWtlLg0KRGVhciBLb3Nha2ksIEkgaGF2ZSB0d28gcXVl c3Rpb25zIG9uIHlvdXIgZXhwbGFuYXRpb246IGEpIHlvdSBzYWlkIGlmIGRvbid0IHNldCBDT05G SUdfQ09NUEFUSU9OLCBhcHBsaWNhdGlvbiBtdXN0IE5PVCB1c2UgPjEgb3JkZXIgYWxsb2NhdGlv bnMsIGlzIHRoZXJlIGFueSBkb2N1bWVudGF0aW9uIGZvciB0aGlzIHRoZW9yeT8gIGIpIE15IG9y ZGVyLTIgYWxsb2NhdGlvbiBub3QgY29tZXMgZnJvbSBhcHBsaWNhdGlvbiwgYnV0IGZyb20gZG9f Zm9yayB3aGljaCBpcyBpbiBrZXJuZWwgc3BhY2UsIGluIG15IG1pbmQgd2hlbiBhIHBhcmVudCBw cm9jZXNzIGZvcmtzIGEgY2hpbGQgcHJvY2VzcywgaXQgbmVlZCB0byBhbGxvY2F0ZSBhIG9yZGVy LTIgbWVtb3J5LCBpZiBhKSBpcyByaWdodCwgdGhlbiBDT05GSUdfQ09NUEFUSU9OIHNob3VsZCBi ZSBhIE1VU1QgY29uZmlndXJhdGlvbiBmb3IgbGludXgga2VybmVsIGJ1dCBub3Qgb3B0aW9uYWw/ IA0KPiAgICAgSWYgd2UgZG9uJ3QgdXNlLCBhbmQgbWV0IHN1Y2ggYW4gaXNzdWUsIGhvdyBzaG91 bGQgd2UgZGVhbCB3aXRoIHN1Y2ggaW5maW5pdGUgbG9vcD8NCj4gDQo+ICAgICBJIG1hZGUgYSBj aGFuZ2UgaW4gYWxsX3JlY2xhaW1hYmxlKCkgZnVuY3Rpb24sIHBhc3NlZCBvdmVybmlnaHQgdGVz dHMsIHBsZWFzZSBoZWxwIHJldmlldywgdGhhbmtzIGluIGFkdmFuY2UhDQo+IEBAIC0yMzUzLDcg KzIzNTMsOSBAQCBzdGF0aWMgYm9vbCBhbGxfdW5yZWNsYWltYWJsZShzdHJ1Y3Qgem9uZWxpc3Qg KnpvbmVsaXN0LA0KPiAgICAgICAgICAgICAgICAgICAgICAgICAgY29udGludWU7DQo+ICAgICAg ICAgICAgICAgICAgaWYgKCFjcHVzZXRfem9uZV9hbGxvd2VkX2hhcmR3YWxsKHpvbmUsIEdGUF9L RVJORUwpKQ0KPiAgICAgICAgICAgICAgICAgICAgICAgICAgY29udGludWU7DQo+IC0gICAgICAg ICAgICAgICBpZiAoIXpvbmUtPmFsbF91bnJlY2xhaW1hYmxlKQ0KPiArICAgICAgICAgICAgICAg aWYgKHpvbmUtPmFsbF91bnJlY2xhaW1hYmxlKQ0KPiArICAgICAgICAgICAgICAgICAgICAgICBj b250aW51ZTsNCj4gKyAgICAgICAgICAgICAgIGlmICh6b25lX3JlY2xhaW1hYmxlKHpvbmUpKQ0K PiAgICAgICAgICAgICAgICAgICAgICAgICAgcmV0dXJuIGZhbHNlOw0KDQpQbGVhc2UgdGVsbCBt ZSB3aHkgeW91IGNoYW5lZCBoZXJlLg0KVGhlIG9yaWdpbmFsIGNoZWNrIGlzIG9uY2UgZm91bmQg em9uZS0+YWxsX3VucmVjbGFpbWFibGUgaXMgZmFsc2UsIGl0IHdpbGwgcmV0dXJuIGZhbHNlLCB0 aGVuIGl0IHdpbGwgc2V0IGRpZF9zb21lX3Byb2dyZXNzIG5vbi16ZXJvLg0KVGhlbiBhbm90aGVy IGxvb3Agb2YgZGlyZWN0X3JlY2xhaW1lZCBwZXJmb3JtZWQuIEJ1dCBJIHRoaW5rIHpvbmUtPmFs bF91bnJlY2xhaW1hYmxlIGlzIG5vdCBhbHdheXMgcmVsaWFibGUgc3VjaCBhcyBpbiBteSBjYXNl LCBrc3dhcGQgZ28gdG8gc2xlZXAgYW5kIG5vIG9uZSB3aWxsIGNoYW5nZSB0aGlzIGZsYWcuIFdl IHNob3VsZCBhbHNvIGNoZWNrIHpvbmVfcmVjbGFpbWFsYmUoem9uZSkgaWYgem9uZS0+YWxsX3Vu cmVjbGFpbWFsYmUgPSAwIHRvIGRvdWJsZSBjb25maXJtIGlmIGEgem9uZSBpcyByZWNsYWltYWJs ZTsNClRoaXMgY2hhbmdlIGFsc28gYXZvaWQgdGhlIGlzc3VlIHlvdSBkZXNjcmliZWQgaW4gYmVs b3cgY29tbWl0Og0KY29tbWl0IDkyOWJlYTdjNzE0MjIwZmM3NmNlM2Y3NWJlZjkwNTY0NzdjMjhl NzQNCkF1dGhvcjogS09TQUtJIE1vdG9oaXJvIDxrb3Nha2kubW90b2hpcm9AanAuZnVqaXRzdS5j b20+DQpEYXRlOiAgIFRodSBBcHIgMTQgMTU6MjI6MTIgMjAxMSAtMDcwMA0KDQogICAgdm1zY2Fu OiBhbGxfdW5yZWNsYWltYWJsZSgpIHVzZSB6b25lLT5hbGxfdW5yZWNsYWltYWJsZSBhcyBhIG5h bWUNCg== -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org