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Wed, 17 Nov 2021 16:39:34 +0800 Received: from [10.174.177.210] (10.174.177.210) by kwepemm600019.china.huawei.com (7.193.23.64) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Wed, 17 Nov 2021 16:39:33 +0800 Subject: Re: [QUESTION] blk_mq_freeze_queue in elevator_init_mq To: Bart Van Assche , , , , , , CC: , , , , References: <59cb2cfd-3890-9fb4-9e77-a4b084d088e9@acm.org> From: yangerkun Message-ID: <03421fa2-fa48-3452-743b-d9cabefc58df@huawei.com> Date: Wed, 17 Nov 2021 16:39:32 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <59cb2cfd-3890-9fb4-9e77-a4b084d088e9@acm.org> Content-Language: en-US X-Originating-IP: [10.174.177.210] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemm600019.china.huawei.com (7.193.23.64) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211117_003939_286706_CD53293F X-CRM114-Status: GOOD ( 14.91 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org CgpPbiAyMDIxLzExLzE3IDEyOjExLCBCYXJ0IFZhbiBBc3NjaGUgd3JvdGU6Cj4gT24gMTEvMTYv MjEgMTk6MzcsIHlhbmdlcmt1biB3cm90ZToKPj4gVGhpcyBjb21taXQgYWRkIGJsa19tcV9mcmVl emVfcXVldWUgaW4gZWxldmF0b3JfaW5pdF9tcSB3aGljaCB0cnkgdG8KPj4gbWFrZSBzdXJlIG5v IGluLWZsaWdodCByZXF1ZXN0IHdoaWxlIHdlIGdvIHRocm91Z2ggYmxrX21xX2luaXRfc2NoZWQu Cj4+IEJ1dCBkb2VzIHRoZXJlIGFueSBkcml2ZXJzIGNhbiBsZWF2ZSBJTyBhbGl2ZSB3aGlsZSB3 ZSBnbyB0aHJvdWdoCj4+IGVsZXZhdG9yX2luaXRfbXHvvJ8gQW5kIGlmIG5vLCBtYXliZSB3ZSBj YW4ganVzdCByZW1vdmUgdGhpcyBsb2dpY2FsIHRvCj4+IGZpeCB0aGUgcmVncmVzc2lvbi4uLgo+ IAo+IERvZXMgdGhpcyB1bnRlc3RlZCBwYXRjaCBoZWxwPyBQbGVhc2Ugbm90ZSB0aGF0IEknbSBu b3QgcmVjb21tZW5kaW5nIHRvCj4gaW50ZWdyYXRlIHRoaXMgcGF0Y2ggaW4gdGhlIHVwc3RyZWFt IGtlcm5lbCBidXQgaWYgaXQgaGVscHMgaXQgY2FuIGJlIGEKPiBidWlsZGluZyBibG9jayBvZiBh IHNvbHV0aW9uLgo+IAo+IFRoYW5rcywKPiAKPiBCYXJ0Lgo+IAo+IGRpZmYgLS1naXQgYS9ibG9j ay9ibGstbXEuYyBiL2Jsb2NrL2Jsay1tcS5jCj4gaW5kZXggM2FiMzRjNGYyMGRhLi5iODVkY2I3 MmE1NzkgMTAwNjQ0Cj4gLS0tIGEvYmxvY2svYmxrLW1xLmMKPiArKysgYi9ibG9jay9ibGstbXEu Ywo+IEBAIC0xNjcsNiArMTY3LDcgQEAgdm9pZCBibGtfZnJlZXplX3F1ZXVlX3N0YXJ0KHN0cnVj dCByZXF1ZXN0X3F1ZXVlICpxKQo+ICDCoMKgwqDCoMKgwqDCoMKgIG11dGV4X3VubG9jaygmcS0+ bXFfZnJlZXplX2xvY2spOwo+ICDCoMKgwqDCoMKgwqDCoMKgIGlmIChxdWV1ZV9pc19tcShxKSkK PiAgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGJsa19tcV9ydW5faHdfcXVldWVzKHEsIGZhbHNl KTsKPiArwqDCoMKgwqDCoMKgwqAgc3luY2hyb25pemVfcmN1X2V4cGVkaXRlZCgpOwo+ICDCoMKg wqDCoCB9IGVsc2Ugewo+ICDCoMKgwqDCoMKgwqDCoMKgIG11dGV4X3VubG9jaygmcS0+bXFfZnJl ZXplX2xvY2spOwo+ICDCoMKgwqDCoCB9Cj4gLgoKU29ycnkgZm9yIHRoYXQgaXQncyBibGtfbXFf cXVpZXNjZV9xdWV1ZSB3aGljaCBhY3R1YWxseSBpbnRyb2R1Y2UgdGhlIApSQ1UgZ2FwLi4uIEkg aGF2ZSB0cnkgc3luY2hyb25pemVfcmN1X2V4cGVkaXRlZCBpbiBibGtfbXFfcXVpZXNjZV9xdWV1 ZSAKd2hpY2ggc2VlbXMgdXNlbGVzcy4uLgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCkxpbnV4IE1URCBkaXNjdXNzaW9uIG1haWxpbmcgbGlz dApodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LW10ZC8K