Re: [PATCH v2] blk-mq: Fix race between resetting the timer and completion handling
From: Bart Van Assche <hidden>
Date: 2018-02-08 01:09:57
T24gV2VkLCAyMDE4LTAyLTA3IGF0IDIzOjQ4ICswMDAwLCBCYXJ0IFZhbiBBc3NjaGUgd3JvdGU6 DQo+IFdpdGggdGhpcyBwYXRjaCBhcHBsaWVkIEkgc2VlIHJlcXVlc3RzIGZvciB3aGljaCBpdCBz ZWVtcyBsaWtlIHRoZSB0aW1lb3V0IGhhbmRsZXINCj4gZGlkIG5vdCBnZXQgaW52b2tlZDogWyAu Li4gXQ0KDQpJIGp1c3Qgbm90aWNlZCB0aGUgZm9sbG93aW5nIGluIHRoZSBzeXN0ZW0gbG9nLCB3 aGljaCBpcyBwcm9iYWJseSB0aGUgcmVhc29uIHdoeSBzb21lDQpyZXF1ZXN0cyBnb3Qgc3R1Y2s6 DQoNCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiBCVUc6IHVuYWJsZSB0byBoYW5k bGUga2VybmVsIE5VTEwgcG9pbnRlciBkZXJlZmVyZW5jZSBhdCAgICAgICAgICAgKG51bGwpDQpG ZWIgIDcgMTU6MTY6MjYgdWJ1bnR1LXZtIGtlcm5lbDogSVA6IHNjc2lfdGltZXNfb3V0KzB4MTcv MHgyYzAgW3Njc2lfbW9kXQ0KRmViICA3IDE1OjE2OjI2IHVidW50dS12bSBrZXJuZWw6IFBHRCAw IFA0RCAwICANCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiBPb3BzOiAwMDAwIFsj MV0gUFJFRU1QVCBTTVANCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiBNb2R1bGVz IGxpbmtlZCBpbjogZG1fc2VydmljZV90aW1lIGliX3NycCBsaWJjcmMzMmMgY3JjMzJjX2dlbmVy aWMgc2NzaV90cmFuc3BvcnRfc3JwIHRhcmdldF9jb3JlX3BzY3NpIHRhcmdldF9jb3JlX2ZpbGUg aWJfc3JwdCB0YXJnZXRfY29yZV9pYmxvY2sgdGFyZ2V0X2NvcmVfbW9kDQpyZG1hX3J4ZSBpcDZf dWRwX3R1bm5lbCB1ZHBfdHVubmVsIGliX3VtYWQgaWJfdXZlcmJzIHNjc2lfZGVidWcgYnJkIG1x X2RlYWRsaW5lIGt5YmVyX2lvc2NoZWQgZGVhZGxpbmVfaW9zY2hlZCBjZnFfaW9zY2hlZCBiZnEg Y3JjdDEwZGlmX3BjbG11bCBjcmMzMl9wY2xtdWwgYWZfcGFja2V0IGdoYXNoX2NsbXVsbmlfaW50 ZWwgcGNiYw0KYWVzbmlfaW50ZWwgYWVzX3g4Nl82NCBjcnlwdG9fc2ltZCBjcnlwdGQgZ2x1ZV9o ZWxwZXIgc2VyaW9fcmF3IHZpcnRpb19jb25zb2xlIHZpcnRpb19iYWxsb29uIHNnIGJ1dHRvbiBp MmNfcGlpeDQgZG1fbXVsdGlwYXRoIGRtX21vZCBkYXggc2NzaV9kaF9yZGFjIHNjc2lfZGhfZW1j IHNjc2lfZGhfYWx1YSBpYl9pc2VyIHJkbWFfY20gaXdfY20NCmliX2NtIGliX2NvcmUgY29uZmln ZnMgaXNjc2lfdGNwIGxpYmlzY3NpX3RjcCBsaWJpc2NzaSBzY3NpX3RyYW5zcG9ydF9pc2NzaSBp cF90YWJsZXMgeF90YWJsZXMgaXB2NiBhdXRvZnM0IGV4dDQgY3JjMTYgbWJjYWNoZSBqYmQyIHNk X21vZCB2aXJ0aW9fbmV0IHZpcnRpb19ibGsgdmlydGlvX3Njc2kgc3JfbW9kIGNkcm9tIGF0YV9n ZW5lcmljDQpwYXRhX2FjcGkgcHNtb3VzZSBjcmMzMmNfaW50ZWwgaTJjX2NvcmUgYXRrYmQNCkZl YiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiB1aGNpX2hjZCBlaGNpX2hjZCBpbnRlbF9h Z3AgYXRhX3BpaXggaW50ZWxfZ3R0IGFncGdhcnQgbGliYXRhIHZpcnRpb19wY2kgdXNiY29yZSB2 aXJ0aW9fcmluZyB2aXJ0aW8gc2NzaV9tb2QgdXNiX2NvbW1vbiB1bml4DQpGZWIgIDcgMTU6MTY6 MjYgdWJ1bnR1LXZtIGtlcm5lbDogQ1BVOiAwIFBJRDogMTQ2IENvbW06IGt3b3JrZXIvMDoxSCBO b3QgdGFpbnRlZCA0LjE1LjAtZGJnKyAjMQ0KRmViICA3IDE1OjE2OjI2IHVidW50dS12bSBrZXJu ZWw6IEhhcmR3YXJlIG5hbWU6IFFFTVUgU3RhbmRhcmQgUEMgKGk0NDBGWCArIFBJSVgsIDE5OTYp LCBCSU9TIDEuMC4wLXByZWJ1aWx0LnFlbXUtcHJvamVjdC5vcmcgMDQvMDEvMjAxNA0KRmViICA3 IDE1OjE2OjI2IHVidW50dS12bSBrZXJuZWw6IFdvcmtxdWV1ZToga2Jsb2NrZCBibGtfbXFfdGlt ZW91dF93b3JrDQpGZWIgIDcgMTU6MTY6MjYgdWJ1bnR1LXZtIGtlcm5lbDogUklQOiAwMDEwOnNj c2lfdGltZXNfb3V0KzB4MTcvMHgyYzAgW3Njc2lfbW9kXQ0KRmViICA3IDE1OjE2OjI2IHVidW50 dS12bSBrZXJuZWw6IFJTUDogMDAxODpmZmZmOThmMGMwMmFiZDU4IEVGTEFHUzogMDAwMTAyNDYN CkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiBSQVg6IDAwMDAwMDAwMDAwMDAwMDAg UkJYOiBmZmZmOTY1ZGUyYjNhMmMwIFJDWDogMDAwMDAwMDAwMDAwMDAwMA0KRmViICA3IDE1OjE2 OjI2IHVidW50dS12bSBrZXJuZWw6IFJEWDogZmZmZmZmZmZjMDA5NDc0MCBSU0k6IDAwMDAwMDAw MDAwMDAwMDAgUkRJOiBmZmZmOTY1ZGUyYjNhMmMwDQpGZWIgIDcgMTU6MTY6MjYgdWJ1bnR1LXZt IGtlcm5lbDogUkJQOiBmZmZmOTY1ZGUyYjNhNDM4IFIwODogZmZmZmZmZmZmZmZmZmZmYyBSMDk6 IDAwMDAwMDAwMDAwMDAwMDcNCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiBSMTA6 IDAwMDAwMDAwMDAwMDAwMDAgUjExOiAwMDAwMDAwMDAwMDAwMDAwIFIxMjogMDAwMDAwMDAwMDAw MDAwMg0KRmViICA3IDE1OjE2OjI2IHVidW50dS12bSBrZXJuZWw6IFIxMzogMDAwMDAwMDAwMDAw MDAwMCBSMTQ6IGZmZmY5NjVkZTJhNDQyMTggUjE1OiBmZmZmOTY1ZGUyYTQ4NzI4DQpGZWIgIDcg MTU6MTY6MjYgdWJ1bnR1LXZtIGtlcm5lbDogRlM6ICAwMDAwMDAwMDAwMDAwMDAwKDAwMDApIEdT OmZmZmY5NjVkZmZjMDAwMDAoMDAwMCkga25sR1M6MDAwMDAwMDAwMDAwMDAwMA0KRmViICA3IDE1 OjE2OjI2IHVidW50dS12bSBrZXJuZWw6IENTOiAgMDAxMCBEUzogMDAwMCBFUzogMDAwMCBDUjA6 IDAwMDAwMDAwODAwNTAwMzMNCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiBDUjI6 IDAwMDAwMDAwMDAwMDAwMDAgQ1IzOiAwMDAwMDAwMDNjZTBmMDAzIENSNDogMDAwMDAwMDAwMDM2 MDZmMA0KRmViICA3IDE1OjE2OjI2IHVidW50dS12bSBrZXJuZWw6IERSMDogMDAwMDAwMDAwMDAw MDAwMCBEUjE6IDAwMDAwMDAwMDAwMDAwMDAgRFIyOiAwMDAwMDAwMDAwMDAwMDAwDQpGZWIgIDcg MTU6MTY6MjYgdWJ1bnR1LXZtIGtlcm5lbDogRFIzOiAwMDAwMDAwMDAwMDAwMDAwIERSNjogMDAw MDAwMDBmZmZlMGZmMCBEUjc6IDAwMDAwMDAwMDAwMDA0MDANCkZlYiAgNyAxNToxNjoyNiB1YnVu dHUtdm0ga2VybmVsOiBDYWxsIFRyYWNlOg0KRmViICA3IDE1OjE2OjI2IHVidW50dS12bSBrZXJu ZWw6IGJsa19tcV90ZXJtaW5hdGVfZXhwaXJlZCsweDQyLzB4ODANCkZlYiAgNyAxNToxNjoyNiB1 YnVudHUtdm0ga2VybmVsOiBidF9pdGVyKzB4M2QvMHg1MA0KRmViICA3IDE1OjE2OjI2IHVidW50 dS12bSBrZXJuZWw6IGJsa19tcV9xdWV1ZV90YWdfYnVzeV9pdGVyKzB4ZTkvMHgyMDANCkZlYiAg NyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiBibGtfbXFfdGltZW91dF93b3JrKzB4MTgxLzB4 MmUwDQpGZWIgIDcgMTU6MTY6MjYgdWJ1bnR1LXZtIGtlcm5lbDogcHJvY2Vzc19vbmVfd29yaysw eDIxYy8weDZkMA0KRmViICA3IDE1OjE2OjI2IHVidW50dS12bSBrZXJuZWw6IHdvcmtlcl90aHJl YWQrMHgzNS8weDM4MA0KRmViICA3IDE1OjE2OjI2IHVidW50dS12bSBrZXJuZWw6IGt0aHJlYWQr MHgxMTcvMHgxMzANCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiByZXRfZnJvbV9m b3JrKzB4MjQvMHgzMA0KRmViICA3IDE1OjE2OjI2IHVidW50dS12bSBrZXJuZWw6IENvZGU6IGZm IGZmIDBmIGZmIGU5IGZkIGZlIGZmIGZmIDkwIDY2IDJlIDBmIDFmIDg0IDAwIDAwIDAwIDAwIDAw IDQxIDU1IDQxIDU0IDU1IDQ4IDhkIGFmIDc4IDAxIDAwIDAwIDUzIDQ4IDhiIDg3IGIwIDAxIDAw IDAwIDQ4IDg5IGZiIDw0Yz4gOGIgMjggMGYgMWYgNDQgMDAgMDAgNjUNCjhiIDA1IDZhIGI1IGY4 IDNmIDgzIGY4IDBmIDBmIDg3IGVkICANCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVs OiBSSVA6IHNjc2lfdGltZXNfb3V0KzB4MTcvMHgyYzAgW3Njc2lfbW9kXSBSU1A6IGZmZmY5OGYw YzAyYWJkNTgNCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiBDUjI6IDAwMDAwMDAw MDAwMDAwMDANCkZlYiAgNyAxNToxNjoyNiB1YnVudHUtdm0ga2VybmVsOiAtLS1bIGVuZCB0cmFj ZSBjZTZjMjBkOTViYWI0NTBlIF0tLS0NCg0KQmFydC4NCg0KDQoNCg0KDQoNCg==