From mboxrd@z Thu Jan 1 00:00:00 1970 From: majianpeng Subject: Re: Re: [PATCH V2 0/2] Auto stop async-write on block device when device removed. Date: Wed, 25 Sep 2013 09:32:55 +0800 Message-ID: <201309250932532670454@gmail.com> References: <201309171121559232246@gmail.com> <201309241107330800706@gmail.com>, Reply-To: majianpeng Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Cc: axboe , viro , LKML , linux-fsdevel To: "Jeff Moyer" Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Pm1hamlhbnBlbmcgPG1hamlhbnBlbmdAZ21haWwuY29tPiB3cml0ZXM6DQo+DQo+Pj5tYWppYW5w ZW5nIDxtYWppYW5wZW5nQGdtYWlsLmNvbT4gd3JpdGVzOg0KPj4+DQo+Pj4+IEZvciBhc3luYy13 cml0ZSBvbiBibG9jayBkZXZpY2UsaWYgZGV2aWNlIHJlbW92ZWQsYnV0IHRoZSB2ZnMgZG9uJ3Qg a25vdyBpdC4NCj4+Pj4gSXQgd2lsbCBjb250aW51ZSB0byBkby4NCj4+Pj4gUGF0Y2gxIHNldCBz aXplIG9mIGlub2RlIG9mIGJsb2NrIGRldmljZSB0byB6ZXJvIHdoZW4gcmVtb3ZlZCBkaXNrLkJ5 IHRoaXMsdmZzIGtub3cgDQo+Pj4+IGRpc2sgY2hhbmdlZC4NCj4+Pj4gUGF0aDIgYWRkIHNpemUt Y2hlY2sgb24gYmxrX2Fpb193cml0ZS5JZiBwb3Mgb2Ygd3JpdGUgbGFyZ2VyIHRoYW4gc2l6ZSBv ZiBpbm9kZSxpdCB3aWxsDQo+Pj4+IHJldHVybiB6ZXJvLlNvIHRoZSB1c2VyIGNhbiBjaGVjayBk aXNrIHN0YXRlLg0KPj4+DQo+Pj5PSywgc28gdGhlIGJhc2ljIHByb2JsZW0gaXMgdGhhdCBfX2dl bmVyaWNfZmlsZV9haW9fd3JpdGUgd2lsbCBhbHdheXMNCj4+PnJldHVybiAwIGFmdGVyIGRldmlj ZSByZW1vdmFsLCB5ZXM/ICBJJ20gbm90IHN1cmUgd2h5IHRoYXQncyBhIHJlYWwNCj4+Pmlzc3Vl LCBjYW4geW91IGV4cGxhaW4gZXhhY3RseSB3aHkgeW91J3JlIHRyeWluZyB0byBjaGFuZ2UgdGhp cz8NCj4+Pg0KPj4gQXQgcHJlbnNldCwgdGhlIF9fZ2VuZXJpY19maWxlX2Fpb193cml0ZSBkb24n dCByZXR1cm4gemVybyByYXRoZXIgdGhhdCB0aGUgd2FudGVkIHNpemUuDQo+PiBTbyB0aGUgdXNl ciBjYW4ndCBrbm93IHRoZSBkaXNrIHJlbW92ZWQuIA0KPj4gRm9yIGV4YW1wbGU6DQo+PiBkZCBp Zj0vZGV2L3plcm8gb2Y9dXNiLWRpc2sgYnM9NjRrDQo+PiBXaGVuIHJlbW92ZWQgdXNiLWRpc2ss IGRkIHN0b3BlZCB1bnRpbCByZWFjaGVkIHRoZSBlbmRvZiB1c2ItZGlzay4NCj4NCj5BaCwgcmln aHQsIGl0J3MganVzdCB3cml0aW5nIHRvIHRoZSBwYWdlIGNhY2hlLiAgSSB0aGluayB0aGUgb25s eSByZWFzb24NCj55b3UgZ2V0IG1vcmUgdGltZWx5IGVycm9ycyB3aGVuIGRvaW5nIHRoZSBzYW1l IHRoaW5nIHRvIGEgZmlsZSBvbiBhIGZpbGUNCj5zeXN0ZW0gaXMgdGhhdCB0aGVyZSBpcyBzb21l IHN5bmNocm9ub3VzIG1ldGFkYXRhIG9yIGpvdXJuYWwgSS9PIHRoYXQNCj53aWxsIGdldCBFSU8g YW5kIHJlc3VsdCBpbiB0aGUgZmlsZSBzeXN0ZW0gYmVpbmcgc2V0IHJlYWQtb25seS4NCj4NClll cw0KPlRoZSBiaWdnZXIgcXVlc3Rpb24gaXMgd2hldGhlciB3ZSB3YW50IHRvIGNoYW5nZSB0aGlz IGxvbmctc3RhbmRpbmcNCj5iZWhhdmlvdXIgb2YgaG93IG91ciB3cml0ZS1iYWNrIGNhY2hlIHdv cmtzLiAgSSBkb24ndCBrbm93IHRoYXQgaXQncw0KPnJlYWxseSB3b3J0aCBpdCwgaG9uZXN0bHku ICBJZiB5b3Ugd2FudCB0byBlbnN1cmUgZGF0YSBpcyBvbiBkaXNrLCB5b3UNCj5vcGVuIHRoZSBm aWxlIE9fU1lOQyBvciB5b3UgaXNzdWUgYW4gZnN5bmMsIGFuZCB0aG9zZSBjYWxscyB3aWxsIHJl dHVybg0KPmFuIGVycm9yIGZvciBhIHJlbW92ZWQgYmxvY2sgZGV2aWNlLiAgU28sIEkgZ3Vlc3Mg SSdsbCBhc2sgdGhlIHNhbWUNCj5xdWVzdGlvbiBhZ2Fpbjogd2h5IGFyZSB5b3UgbG9va2luZyBh dCB0aGlzPyAgSXMgdGhlcmUgc29tZSBhcHBsaWNhdGlvbg0KPnlvdSBjYXJlIGFib3V0IHRoYXQg ZG9lcyBidWZmZXJlZCBJL08gdG8gdGhlIGJsb2NrIGRldmljZSBhbmQgbmV2ZXIgZG9lcw0KPmFu IGZzeW5jPw0KPg0KWWVzLCBmb3IgbXkgY29tcGFueSwgd2UgdXNlZCBvdXIgZmlsZXN5c3RlbSBp biB1c2Vyc3BhY2Ugb24gYmxvY2stZGV2aWNlLg0KRm9yIHRoZSBwZXJmb3JtYW5jZSwgd2UgdXNl ZCBidWZmZXItd3J0aXRlIG5vdCBzeW5jLXdyaXRlLg0KRm9yIG15IHdvcmtsb2FkLCB3ZSBhbGxv dyB1c2VyIHRvIHJlbW92ZSBkaXNrIHdoZXRoZXIgZGlzayB3b3JraW5nIG9yIG5vdC4NCk5vdywg d2UgY2hlY2sgdGhlIHN0YXRlIG9mIGRpc2sgZnJvbSAvcHJvYy9wYXJ0aXRpb25zIGF0IHRoZSBz YW1lIGludGVydmFsLg0KDQpUaGlzIHBhdGNoc2V0IGRvbid0IGNoYW5nZSB3cml0ZS1iYWNrIGNh Y2hlIHdvcmtzLkl0IG9ubHkgbGV0IHZmcyBrbm93IHRoZSBzdGF0ZSBvZiBsb3dlci1kZXZpY2Uu DQpJIHRoaW5rIGl0IG1ha2UgYSBzZW5zZS4NCg0KVGhhbmtzIQ0KSmlhbnBlbmcgTWE=