From mboxrd@z Thu Jan 1 00:00:00 1970 From: majianpeng Subject: Re: Re: [RFC PATCH V1] raid5: Add R5_ReadNoMerge flag which prevent bio from merging at block layer Date: Sat, 21 Jul 2012 12:35:52 +0800 Message-ID: <201207211235474533141@gmail.com> References: <201207131913329371733@gmail.com>, <20120716154822.2774ff5e@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Return-path: Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: linux-raid List-Id: linux-raid.ids T24gMjAxMi0wNy0xNiAxMzo0OCBOZWlsQnJvd24gPG5laWxiQHN1c2UuZGU+IFdyb3RlOg0KPk9u IEZyaSwgMTMgSnVsIDIwMTIgMTk6MTM6MzUgKzA4MDAgbWFqaWFucGVuZyA8bWFqaWFucGVuZ0Bn bWFpbC5jb20+IHdyb3RlOg0KPg0KPj4gQmVjYXVzZSBiaW9zIHdpbGwgbWVyZ2UgYXQgYmxvY2st bGF5ZXIsc28gYmlvcy1lcnJvciBtYXkgY2F1c2VkIGJ5IG90aGVyDQo+PiBiaW8gd2hpY2ggYmUg bWVyZ2VkIGludG8gdG8gdGhlIHNhbWUgcmVxdWVzdC4NCj4+IFVzaW5nIHRoaXMgZmxhZyxpdCB3 aWxsIGZpbmQgZXhhY3RseSBlcnJvci1zZWN0b3IgYW5kIG5vdCBkbyByZWR1bmRhbnQNCj4+IG9w ZXJhdGlvbiBsaWtlIHJlLXdyaXRlIGFuZCByZS1yZWFkLg0KPj4gDQo+PiBWMC0+VjE6VXNpbmcg UkVRX0ZMVVNIIGluc3RlYWQgUkVRX05PTUVSR0UgYXZvaWQgYmlvIG1lcmdpbmcgYXQgYmxvY2sN Cj4+IGxheWVyLg0KPj4gDQo+PiBTaWduZWQtb2ZmLWJ5OiBKaWFucGVuZyBNYSA8bWFqaWFucGVu Z0BnbWFpbC5jb20+DQoNCltzbmlwXQ0KPg0KPg0KPlRoYW5rcywgSSd2ZSBhcHBsaWVkIHRoaXMu DQo+DQo+V2Ugc2hvdWxkIHByb2JhYmx5IGRvIGEgc2ltaWxhciB0aGluZyBpbiBmaXhfcmVhZF9l cnJvciBhbmQNCj5maXhfc3luY19yZWFkX2Vycm9yIGluIFJBSUQxIGFuZCBSQUlEMTAuLi4NCj4N CkkgcmV2aWV3ZWQgdGhlIGNvZGUgYWJvdXQgZml4X3JlYWRfZXJyb3IvZml4X3N5bmNfcmVhZF9l cnJvci4NCkl0IGFscmVhZHkgZG8gdGhlIHNpbWlsYXIgdGhpbmcuDQo+VGhhbmtzLA0KPk5laWxC cm93bg0KPg0KPg==