From mboxrd@z Thu Jan 1 00:00:00 1970 From: majianpeng Subject: Re: Re: [PATCH] target: For iblock at default writecache enable. Date: Wed, 30 Jan 2013 09:19:16 +0800 Message-ID: <201301300919014311109@gmail.com> References: <201301250958101278740@gmail.com> <1359486198.23290.1409.camel@haakon2.linux-iscsi.org> <5108558D.6000408@redhat.com>, <1359501265.23290.1720.camel@haakon2.linux-iscsi.org> Reply-To: majianpeng Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:37038 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751586Ab3A3BTf (ORCPT ); Tue, 29 Jan 2013 20:19:35 -0500 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: nab , Andy Grover Cc: linux-scsi , target-devel Pk9uIFR1ZSwgMjAxMy0wMS0yOSBhdCAxNTowNCAtMDgwMCwgQW5keSBHcm92ZXIgd3JvdGU6DQo+ PiBPbiAwMS8yOS8yMDEzIDExOjAzIEFNLCBOaWNob2xhcyBBLiBCZWxsaW5nZXIgd3JvdGU6DQo+ PiANCj4+ID4gU28gZW5hYmxpbmcgZW11bGF0ZV93cml0ZV9jYWNoZT0xIGluIHRoZSBjYXNlIHdo ZW4gdGhlIHVuZGVybHlpbmcgZGV2aWNlDQo+PiA+IGhhcyBub3QgZW5hYmxlZCBpdCBpcyBpbmNv cnJlY3QuDQo+PiA+IA0KPj4gPiBJJ2QgbGlrZSB0byBlbmFibGUgdGhpcyBiaXQgd2hlbiB3ZSBr bm93IHRoZSB1bmRlcmx5aW5nIGRldmljZSBoYXMgV0NFPTENCj4+ID4gc2V0LCBidXQgY3VycmVu dGx5IHRoZXJlIGlzIG5vdCBhIHdheSB0byBkZXRlcm1pbmUgdGhpcyAoZ2VuZXJpY2FsbHkpDQo+ PiA+IGZyb20gc3RydWN0IGJsb2NrX2RldmljZS4NCj4+ID4gDQo+PiA+IFNvIE5BQ0sgZm9yIGFw cGx5aW5nIHRoaXMgdW50aWwgdGhlcmUgaXMgYSBtZXRob2QgdG8gZGV0ZXJtaW5lIHdoYXQgdGhl DQo+PiA+IGhhcmR3YXJlIGJlbG93IGlzIGRvaW5nLg0KPj4gDQo+PiBUaGlzIHNob3VsZCBiZSBw b3NzaWJsZSBmcm9tIHVzZXJzcGFjZSB0aG91Z2guIEknbSBwbGFubmluZyBvbiBsb29raW5nDQo+ PiB1cCB1bmRlcmx5aW5nIHNjc2kgZGV2aWNlKHM/KSB1c2luZyBsaWJibGtpZCwgYW5kIHRoZW4g cXVlcnkgdGhlIHNlbnNlDQo+PiBkYXRhIHVzaW5nIGxpYnNndXRpbHMgd2hlbiBhZGRpbmcgYSBi bG9jayBiYWNrc3RvcmUgaW4gdGFyZ2V0Y2xpLg0KPj4gDQo+DQo+UXVlcnlpbmcgdGhlIG1vZGUg cGFnZXMgZnJvbSB1c2Vyc3BhY2Ugd291bGQgd29yayBmb3IgdGhlIFNDU0kgYmFja3N0b3JlDQo+ Y2FzZSwgYnV0IGNlcnRhaW5seSBub3QgZm9yIHJhdyBibG9jayBkZXZpY2VzLg0KPg0KPkknZCBz dGlsbCBsaWtlIHRvIHNlZSB0aGlzIGV4cG9zZWQgdG8gdGhlIGJsb2NrIGxheWVyIHNvbWVob3cs IHNvIHRoYXQNCj50aGUgc2V0dGluZyBjYW4gYmUgYXV0b21hdGljYWxseSBkZXRlcm1pbmVkIGJ5 IFRDTSBvbmNlIGl0J3Mga25vd24gaWYNCj50aGUgdW5kZXJseWluZyBIVyBoYXMgZW5hYmxlZCB3 cml0ZSBjYWNoaW5nLg0KPg0KPj4gSXQncyBraW5kIG9mIGEgaGFzc2xlLCBidXQgaXNuJ3QgaXQg YSBodWdlIHBlcmZvcm1hbmNlIHdpbiBpZiB3ZSBjYW4NCj4+IGVuYWJsZSB0aGlzPw0KPj4gDQo+ DQo+TW9zdCBjZXJ0YWlubHksIGJ1dCB0aGUgZGFuZ2VyIGlzIHJlcG9ydGluZyBXQ0U9MSAoYnkg ZGVmYXVsdCBpbiBhbGwNCj5jYXNlcykgZnJvbSBUQ00gdG8gdGhlIGluaXRpYXRvciB3aGVuIHRo ZSB1bmRlcmx5aW5nIGRyaXZlcyBkbyBub3QgaGF2ZQ0KPmNhY2hpbmcgZW5hYmxlZC4gIE5vdGUg dGhhdCBldmVyeSBzcGlubmluZyBtZWRpYSBkZXZpY2UgdGhhdCBJJ3ZlIGV2ZXINCj5zZWVuIGRp c2FibGVzIFdDRSBieSBkZWZhdWx0IGZyb20gdGhlIGZhY3RvcnkuDQpTb3JyeSwgd2hhdCdzIHRo ZSBkYW5nZXI/Q2FuIHlvdSBleHBsYWluIHRoZSBkZXRhaWxzPw0KQW5kIGZvciBtb3N0IHNhdGEg aGRkIHRoZSBXQ0UgIGlzIGVuYWJsZSBieSBkZWZhdWx0Lg0KSU1ITywgZm9yIGhhcmQtcmFpZCB0 aGUgV0NFIHdpbGwgYmUgZGlzYWJsZSwgaXQgdXNlZCB0aGUgY2FjaGUgb2YgaGFyZHJhaWQtY2Fy ZC4NCg0KSW4gZnVuYyBzZF9yZXZhbGlkYXRlX2Rpc2s6DQo+CS8qDQo+CSAqIFdlIG5vdyBoYXZl IGFsbCBjYWNoZSByZWxhdGVkIGluZm8sIGRldGVybWluZSBob3cgd2UgZGVhbA0KPgkgKiB3aXRo IGZsdXNoIHJlcXVlc3RzLg0KPgkgKi8NCj4JaWYgKHNka3AtPldDRSkgew0KPgkJZmx1c2ggfD0g UkVRX0ZMVVNIOw0KPgkJaWYgKHNka3AtPkRQT0ZVQSkNCj4JCQlmbHVzaCB8PSBSRVFfRlVBOw0K Pgl9DQoNCj4JYmxrX3F1ZXVlX2ZsdXNoKHNka3AtPmRpc2stPnF1ZXVlLCBmbHVzaCk7DQpXZSBj YW4gdXNlIHF1ZXVlLT5mbHVzaF9mbGFncy4NCkJ1dCBpbiBmdW5jIGdlbmVyaWNfbWFrZV9yZXF1 ZXN0X2NoZWNrczoNCj4vKg0KPgkgKiBGaWx0ZXIgZmx1c2ggYmlvJ3MgZWFybHkgc28gdGhhdCBt YWtlX3JlcXVlc3QgYmFzZWQNCj4JICogZHJpdmVycyB3aXRob3V0IGZsdXNoIHN1cHBvcnQgZG9u J3QgaGF2ZSB0byB3b3JyeQ0KPgkgKiBhYm91dCB0aGVtLg0KPgkgKi8NCj4JaWYgKChiaW8tPmJp X3J3ICYgKFJFUV9GTFVTSCB8IFJFUV9GVUEpKSAmJiAhcS0+Zmx1c2hfZmxhZ3MpIHsNCj4JCWJp by0+YmlfcncgJj0gfihSRVFfRkxVU0ggfCBSRVFfRlVBKTsNClNvIGlmIHVkZXJseWluZyBkZXZp Y2UgZG9uJ3Qgc3VwcG9ydCBXQ0UsIGl0IGNhbiByZW1vdmUgUkVRX0ZVQXxSRVFfRkxVU0guDQpJ IHRoaW5rIGVuYWJsZSB3cml0ZWNhY2hlIGJ5IGRlZmF1bHQgaXMgb2suDQoNCkppYW5wZW5nDQpU aGFua3Mh