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Wed, 17 Nov 2021 16:37:59 +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 16:37:58 +0800 Subject: Re: [QUESTION] blk_mq_freeze_queue in elevator_init_mq To: Ming Lei CC: , , , , , , , , , References: From: yangerkun Message-ID: <774e0e26-9d2b-660f-196a-ea6651e2d845@huawei.com> Date: Wed, 17 Nov 2021 16:37:57 +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: Content-Language: en-US X-Originating-IP: [10.174.177.210] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) 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_003801_840232_12746EC7 X-CRM114-Status: GOOD ( 19.87 ) 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 CgpPbiAyMDIxLzExLzE3IDE2OjA2LCBNaW5nIExlaSB3cm90ZToKPiBPbiBXZWQsIE5vdiAxNywg MjAyMSBhdCAxMTozNzoxM0FNICswODAwLCB5YW5nZXJrdW4gd3JvdGU6Cj4+IE5vd2RheXMgd2Ug bWVldCB0aGUgYm9vdCByZWdyZXNzaW9uIHdoaWxlIGVuYWJsZSBsb3RzIG9mIG10ZGJsb2NrCj4g Cj4gV2hhdCBpcyB5b3VyIGJvb3QgcmVncmVzc2lvbj8gQW55IGRtZXNnIGxvZz8KPiAKPj4gY29t cGFyZSB3aXRoIDQuNC4gVGhlIG1haW4gcmVhc29uIHdhcyB0aGF0IHRoZSBibGtfbXFfZnJlZXpl X3F1ZXVlIGluCj4+IGVsZXZhdG9yX2luaXRfbXEgd2lsbCB3YWl0IGEgUkNVIGdhcCB3aGljaCB3 YW50IHRvIG1ha2Ugc3VyZSBubyBJTyB3aWxsCj4+IGhhcHBlbiB3aGlsZSBibGtfbXFfaW5pdF9z Y2hlZC4KPiAKPiBUaGVyZSBpc24ndCBSQ1UgZ3JhY2UgcGVyaW9kIGltcGxpZWQgaW4gdGhlIGJs a19tcV9mcmVlemVfcXVldWUoKSBjYWxsZWQKPiBmcm9tIGVsZXZhdG9yX2luaXRfbXEoKSwgYmVj YXVzZSB0aGUgLnFfdXNhZ2VfY291bnRlciB3b3JrcyBhdCBhdG9taWMgbW9kZQo+IGF0IHRoYXQg dGltZS4KCkVtbS4uLiBJdCdzIG15IGZhdWx0LiBXaGljaCBhZGQgdGhlIFJDVSBpcyBibGtfbXFf cXVpZXNjZV9xdWV1ZS4uLgoKPiAKPj4KPj4gT3RoZXIgbW9kdWxlIGxpa2UgbG9vcCBtZWV0cyB0 aGlzIHByb2JsZW0gdG9vIGFuZCBoYXMgYmVlbiBmaXggd2l0aAo+IAo+IEFnYWluLCB3aGF0IGlz IHRoZSBwcm9ibGVtPwo+IAo+PiBmb2xsb3cgcGF0Y2hlczoKPj4KPj4gICAyMTEyZjVjMTMzMGEg bG9vcDogU2VsZWN0IEkvTyBzY2hlZHVsZXIgJ25vbmUnIGZyb20gaW5zaWRlIGFkZF9kaXNrKCkK Pj4gICA5MGI3MTk4MDAxZjIgYmxrLW1xOiBJbnRyb2R1Y2UgdGhlIEJMS19NUV9GX05PX1NDSEVE X0JZX0RFRkFVTFQgZmxhZwo+Pgo+PiBUaGV5IGNoYW5nZSB0aGUgZGVmYXVsdCBJTyBzY2hlZHVs ZXIgZm9yIGxvb3AgdG8gJ25vbmUnLiBTbyBubyBuZWVkIHRvCj4+IGNhbGwgYmxrX21xX2ZyZWV6 ZV9xdWV1ZSBhbmQgYmxrX21xX2luaXRfc2NoZWQuIEJ1dCBpdCBzZWVtcyBub3QKPj4gYXBwcm9w cmlhdGUgZm9yIG10ZGJsb2Nrcy4gTXRkYmxvY2tzIGNhbiB1c2UgJ21xLWRlYWRsaW5lJyB0byBo ZWxwCj4+IG9wdGltaXplIHRoZSByYW5kb20gd3JpdGUgd2l0aCB0aGUgaGVscCBvZiBtdGRibG9j aydzIGNhY2hlLiBPbmNlIGNoYW5nZQo+PiB0byAnbm9uZScsIHdlIG1heSBtZWV0IHRoZSByZWdy ZXNzaW9uIGZvciByYW5kb20gd3JpdGUuCj4+Cj4+IGNvbW1pdCA3MzdlYjc4ZTgyZDUyZDM1ZGYx NjZkMjlhZjMyYmY2MTk5MmRlNzFkCj4+IEF1dGhvcjogRGFtaWVuIExlIE1vYWwgPGRhbWllbi5s ZW1vYWxAd2RjLmNvbT4KPj4gRGF0ZTogICBUaHUgU2VwIDUgMTg6NTE6MzMgMjAxOSArMDkwMAo+ Pgo+PiAgICAgIGJsb2NrOiBEZWxheSBkZWZhdWx0IGVsZXZhdG9yIGluaXRpYWxpemF0aW9uCj4+ Cj4+ICAgICAgLi4uCj4+Cj4+ICAgICAgQWRkaXRpb25hbGx5LCB0byBtYWtlIHN1cmUgdGhhdCB0 aGUgZWxldmF0b3IgaW5pdGlhbGl6YXRpb24gaXMgbmV2ZXIKPj4gICAgICBkb25lIHdoaWxlIHJl cXVlc3RzIGFyZSBpbi1mbGlnaHQgKHRoZXJlIHNob3VsZCBiZSBub25lIHdoZW4gdGhlIGRldmlj ZQo+PiAgICAgIGRyaXZlciBjYWxscyBkZXZpY2VfYWRkX2Rpc2soKSksIGZyZWV6ZSBhbmQgcXVp ZXNjZSB0aGUgZGV2aWNlIHJlcXVlc3QKPj4gICAgICBxdWV1ZSBiZWZvcmUgY2FsbGluZyBibGtf bXFfaW5pdF9zY2hlZCgpIGluIGVsZXZhdG9yX2luaXRfbXEoKS4KPj4gICAgICAuLi4KPj4KPj4g VGhpcyBjb21taXQgYWRkIGJsa19tcV9mcmVlemVfcXVldWUgaW4gZWxldmF0b3JfaW5pdF9tcSB3 aGljaCB0cnkgdG8KPj4gbWFrZSBzdXJlIG5vIGluLWZsaWdodCByZXF1ZXN0IHdoaWxlIHdlIGdv IHRocm91Z2ggYmxrX21xX2luaXRfc2NoZWQuCj4+IEJ1dCBkb2VzIHRoZXJlIGFueSBkcml2ZXJz IGNhbiBsZWF2ZSBJTyBhbGl2ZSB3aGlsZSB3ZSBnbyB0aHJvdWdoCj4+IGVsZXZhdG9yX2luaXRf bXHvvJ8gQW5kIGlmIG5vLCBtYXliZSB3ZSBjYW4ganVzdCByZW1vdmUgdGhpcyBsb2dpY2FsIHRv Cj4+IGZpeCB0aGUgcmVncmVzc2lvbi4uLgo+IAo+IFNDU0kgc2hvdWxkIGhhdmUgcGFzc3Rocm91 Z2ggcmVxdWVzdHMgYXQgdGhhdCBtb21lbnQuCj4gCj4gCj4gCj4gVGhhbmtzLAo+IE1pbmcKPiAK PiAuCj4gCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KTGludXggTVREIGRpc2N1c3Npb24gbWFpbGluZyBsaXN0Cmh0dHA6Ly9saXN0cy5pbmZy YWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtbXRkLwo=