From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Bart Van Assche To: "ming.lei@redhat.com" CC: "hch@lst.de" , "jthumshirn@suse.de" , "hare@suse.de" , "linux-block@vger.kernel.org" , "osandov@fb.com" , "axboe@kernel.dk" Subject: Re: [PATCH 4/7] blk-mq: Avoid that request processing stalls when sharing tags Date: Sat, 2 Dec 2017 00:48:51 +0000 Message-ID: <1512175730.2520.29.camel@wdc.com> References: <20171201000848.2656-1-bart.vanassche@wdc.com> <20171201000848.2656-5-bart.vanassche@wdc.com> <20171201025803.GA29741@ming.t460p> <1512157932.2520.27.camel@wdc.com> <20171202003625.GA24521@ming.t460p> In-Reply-To: <20171202003625.GA24521@ming.t460p> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 List-ID: T24gU2F0LCAyMDE3LTEyLTAyIGF0IDA4OjM2ICswODAwLCBNaW5nIExlaSB3cm90ZToNCj4gT24g RnJpLCBEZWMgMDEsIDIwMTcgYXQgMDc6NTI6MTRQTSArMDAwMCwgQmFydCBWYW4gQXNzY2hlIHdy b3RlOg0KPiA+IE9uIEZyaSwgMjAxNy0xMi0wMSBhdCAxMDo1OCArMDgwMCwgTWluZyBMZWkgd3Jv dGU6DQo+ID4gPiBPbiBUaHUsIE5vdiAzMCwgMjAxNyBhdCAwNDowODo0NVBNIC0wODAwLCBCYXJ0 IFZhbiBBc3NjaGUgd3JvdGU6DQo+ID4gPiA+IGJsa19tcV9kaXNwYXRjaF9ycV9saXN0KCkgaXMg Y2FsbGVkLiBNYWtlIHN1cmUgdGhhdA0KPiA+ID4gPiBCTEtfTVFfU19TQ0hFRF9SRVNUQVJUIGlz IHNldCBiZWZvcmUgYW55IGJsa19tcV9kaXNwYXRjaF9ycV9saXN0KCkNCj4gPiA+ID4gY2FsbCBv Y2N1cnMuDQo+ID4gPiA+IA0KPiA+ID4gPiBGaXhlczogY29tbWl0IGIzNDc2ODlmZmJjYSAoImJs ay1tcS1zY2hlZDogaW1wcm92ZSBkaXNwYXRjaGluZyBmcm9tIHN3IHF1ZXVlIikNCj4gPiA+IA0K PiA+ID4gV2UgYWx3YXlzIG1hcmsgUkVTVEFSVCBzdGF0ZSBiaXQganVzdCBiZWZvcmUgZGlzcGF0 Y2hpbmcgZnJvbSAtPmRpc3BhdGNoX2xpc3QsDQo+ID4gPiB0aGlzIHdheSBoYXMgYmVlbiB0aGVy ZSBiZWZvcmUgYjM0NzY4OWZmYmNhLCB3aGljaCBkb2Vzbid0IGNoYW5nZSB0aGlzDQo+ID4gPiBS RVNUQVJUIG1lY2hhbmlzbSwgc28gcGxlYXNlIGV4cGxhaW4gYSBiaXQgd2h5IGl0IGlzIGEgZml4 IG9uIGNvbW1pdA0KPiA+ID4gYjM0NzY4OWZmYmNhLg0KPiA+IA0KPiA+IEknbSBub3QgY29tcGxl dGVseSBzdXJlIHdoaWNoIHBhdGNoIGludHJvZHVjZWQgdGhlIGxvY2t1cCBmaXhlZCBieSB0aGlz IHBhdGNoDQo+ID4gYnV0IEkgd2lsbCBoYXZlIGFub3RoZXIgbG9vayB3aGV0aGVyIHRoaXMgd2Fz IHJlYWxseSBpbnRyb2R1Y2VkIGJ5IGNvbW1pdA0KPiA+IGIzNDc2ODlmZmJjYS4NCj4gDQo+IFBs ZWFzZSBtYWtlIHN1cmUgJ0ZpeGVzJyB0YWcgY29ycmVjdC4NCg0KRnVydGhlciB0ZXN0cyBoYXZl IHNob3duIHRoYXQgdGhlIGxvY2t1cCBJIHJlZmVycmVkIHRvIGRvZXMgbm90IG9jY3VyIGJlZm9y ZSBjb21taXQNCmIzNDc2ODlmZmJjYSBidXQgdGhhdCBpdCBvY2N1cnMgd2l0aCBiMzQ3Njg5ZmZi Y2EuIEkgdGhpbmsgdGhhdCBzaG93cyBjbGVhcmx5IHRoYXQNCmNvbW1pdCBiMzQ3Njg5ZmZiY2Eg aW50cm9kdWNlZCB0aGlzIGxvY2t1cC4NCg0KQmFydC4=