From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Bart Van Assche To: "ming.lei@redhat.com" CC: "linux-block@vger.kernel.org" , "hch@infradead.org" , "sagi@grimberg.me" , "snitzer@redhat.com" , "martin.petersen@oracle.com" , "linux-scsi@vger.kernel.org" , "axboe@fb.com" , "linux-nvme@lists.infradead.org" , "jejb@linux.vnet.ibm.com" , "loberman@redhat.com" , "dm-devel@redhat.com" Subject: Re: [PATCH 1/5] block: don't call blk_mq_delay_run_hw_queue() in case of BLK_STS_RESOURCE Date: Tue, 19 Sep 2017 15:36:35 +0000 Message-ID: <1505835394.2671.18.camel@wdc.com> References: <20170915164456.9803-1-ming.lei@redhat.com> <20170915164456.9803-2-ming.lei@redhat.com> <1505498249.3420.15.camel@wdc.com> <20170917124000.GB6289@ming.t460p> <1505747894.2685.6.camel@wdc.com> <20170919054308.GA2517@ming.t460p> In-Reply-To: <20170919054308.GA2517@ming.t460p> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org List-ID: T24gVHVlLCAyMDE3LTA5LTE5IGF0IDEzOjQzICswODAwLCBNaW5nIExlaSB3cm90ZToNCj4gT24g TW9uLCBTZXAgMTgsIDIwMTcgYXQgMDM6MTg6MTZQTSArMDAwMCwgQmFydCBWYW4gQXNzY2hlIHdy b3RlOg0KPiA+IElmIHlvdSBhcmUgc3RpbGwgbG9va2luZyBhdCByZW1vdmluZyB0aGUgYmxrX21x X2RlbGF5X3J1bl9od19xdWV1ZSgpIGNhbGxzDQo+ID4gdGhlbiBJIHRoaW5rIHlvdSBhcmUgbG9v a2luZyBpbiB0aGUgd3JvbmcgZGlyZWN0aW9uLiBXaGF0IGtpbmQgb2YgcHJvYmxlbQ0KPiA+IGFy ZSB5b3UgdHJ5aW5nIHRvIHNvbHZlPyBJcyBpdCBwZXJoYXBzIHRoYXQgdGhlcmUgY2FuIGJlIGEg ZGVsYXkgYmV0d2Vlbg0KPiANCj4gQWN0dWFsbHkgdGhlIGltcHJvdmVtZW50IG9uIGRtLXJxIElP IHNjaGVkdWxlKHRoZSBwYXRjaCAyIH4gNSkgZG9lc24ndA0KPiBuZWVkIHRoaXMgcGF0Y2guDQoN ClRoZSBhcHByb2FjaCBvZiB0aGlzIHBhdGNoIHNlcmllcyBsb29rcyB3cm9uZyB0byBtZSBhbmQg cGF0Y2ggNS81IGlzIGFuIHVnbHkNCmhhY2sgaW4gbXkgb3Bpbmlvbi4gVGhhdCdzIHdoeSBJIGFz a2VkIHlvdSB0byBkcm9wIHRoZSBlbnRpcmUgcGF0Y2ggc2VyaWVzIGFuZA0KdG8gdGVzdCB3aGV0 aGVyIGluc2VydGluZyBhIHF1ZXVlIHJ1biBjYWxsIGludG8gdGhlIGRtLW1wYXRoIGVuZF9pbyBj YWxsYmFjaw0KeWllbGRzIGEgc2ltaWxhciBwZXJmb3JtYW5jZSBpbXByb3ZlbWVudCB0byB0aGUg cGF0Y2hlcyB5b3UgcG9zdGVkLiBQbGVhc2UgZG8NCm5vdCBleHBlY3QgbWUgdG8gc3BlbmQgbW9y ZSB0aW1lIG9uIHRoaXMgcGF0Y2ggc2VyaWVzIGlmIHlvdSBkbyBub3QgY29tZSB1cA0Kd2l0aCBt ZWFzdXJlbWVudCByZXN1bHRzIGZvciB0aGUgcHJvcG9zZWQgYWx0ZXJuYXRpdmUuDQoNCkJhcnQu