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([2601:647:4802:9070:b43d:4be3:4cfb:fd9e]) by smtp.gmail.com with ESMTPSA id d131sm546927pgc.88.2020.08.28.16.59.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 28 Aug 2020 16:59:47 -0700 (PDT) Subject: Re: [PATCH] nvme: Revert: Fix controller creation races with teardown flow To: James Smart , linux-nvme@lists.infradead.org References: <20200828190150.34455-1-james.smart@broadcom.com> <0867c437-1521-c0c9-d7fa-6a615d88105a@grimberg.me> From: Sagi Grimberg Message-ID: <741ec2a7-7a38-9432-33fb-58227bf1f1f1@grimberg.me> Date: Fri, 28 Aug 2020 16:59:45 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200828_195954_798663_05ACEE1C X-CRM114-Status: GOOD ( 20.32 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Keith Busch , Israel Rukshin , Christoph Hellwig , stable@vger.kernel.org, Max Gurtovoy Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Cj4+IFRoaXMgaXMgaW5kZWVkIGEgcmVncmVzc2lvbi4KPj4KPj4gUGVyaGFwcyB3ZSBzaG91bGQg YWxzbyByZXZlcnQ6Cj4+IDEyYTBiNjYyMjEwNyAoIm52bWU6IGRvbid0IGhvbGQgbnZtZl90cmFu c3BvcnRzX3J3c2VtIGZvciBtb3JlIHRoYW4gCj4+IHRyYW5zcG9ydCBsb29rdXBzIikKPj4KPj4g V2hpY2ggaW5oZXJlbnRseSBjYXVzZWQgdGhpcyBieSByZW1vdmluZyB0aGUgc2VyaWFsaXphdGlv biBvZgo+PiAuY3JlYXRlX2N0cmwoKS4uLgo+IAo+IG5vLCBJIGJlbGlldmUgdGhlIHBhdGNoIG9u IHRoZSBzZW1hcGhvcmUgaXMgY29ycmVjdC4gT3RoZXJ3aXNlIC0gdGhpbmdzIAo+IGNhbiBiZSBi bG9ja2VkIGEgbG9uZyB0aW1lLi4gYSBtaW51dGUgKDEgY21kIHRpbWVvdXQpIG9yIGV2ZW4gbXVs dGlwbGUgCj4gbWludXRlcyBpbiB0aGUgY2FzZSB3aGVyZSBhIGNvbW1hbmQgZmFpbHVyZSBpbiBj b3JlIGxheWVycyBlZmZlY3RpdmVseSAKPiBnZXRzIGlnbm9yZWQgYW5kIHRodXMgZG9lc24ndCBj YXVzZSB0aGUgZXJyb3IgcGF0aCBpbiB0aGUgdHJhbnNwb3J0LiAKPiBUaGVyZSBjYW4gYmUgbXVs dGlwbGUgL2Rldi9udm1lLWZhYnJpY3MgY29tbWFuZHMgc3RhY2tlZCB1cCB0aGF0IGNhbiAKPiBt YWtlIHRoZSBkZWxheXMgbG9vayBtdWNoIGxvbmdlciB0byB0aGUgbGFzdCBndXkuCj4gCj4gYXMg ZmFyIGFzIGNyZWF0aW9uIHZzIHRlYXJkb3duLi4uIHllYWgsIG5vdCBmdW4sIGJ1dCB0aGVyZSBh cmUgb3RoZXIgCj4gd2F5cyB0byBkZWFsIHdpdGggaXQuIEZDOiBJIGdvdCByaWQgb2YgdGhlIHNl cGFyYXRlIGNyZWF0ZS9yZWNvbm5lY3QgCj4gdGhyZWFkcyBhIHdoaWxlIGFnbyB0aHVzIHRoZSBy ZXR1cm4tY29udHJvbC13aGlsZS1yZWNvbm5lY3RpbmcgYmVoYXZpb3IsIAo+IHNvIEkndmUgaGFk IHRvIGRlYWwgd2l0aCBpdC7CoCBJdCdzIG9uZSBhcmVhIGl0J2QgYmUgbmljZSB0byBzZWUgc29t ZSAKPiBjb252ZXJnZW5jZSBpbiBpbXBsZW1lbnRhdGlvbiBhZ2FpbiBiZXR3ZWVuIHRyYW5zcG9y dHMuCgpEb2Vzbid0IGZjIGhhdmUgYSBidWcgdGhlcmU/IGluIGNyZWF0ZV9jdHJsIGFmdGVyIGZs dXNoaW5nIHRoZQpjb25uZWN0X3dvcmssIHdoYXQgaXMgdGVsbGluZyBpdCBpZiBkZWxldGUgaXMg cnVubmluZyBpbiB3aXRoIGl0CihvciB0aGF0IGl0IGFscmVhZHkgcmFuLi4uKQoKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTGludXgtbnZtZSBtYWlsaW5n IGxpc3QKTGludXgtbnZtZUBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRl YWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtbnZtZQo=