From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Wilck Subject: Re: [PATCH 2/2] multipath: fix rcu thread cancellation hang Date: Fri, 23 Mar 2018 22:09:23 +0100 Message-ID: <1521839363.13100.119.camel@suse.com> References: <1521835246-29080-1-git-send-email-bmarzins@redhat.com> <1521835246-29080-3-git-send-email-bmarzins@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1521835246-29080-3-git-send-email-bmarzins@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: Benjamin Marzinski , device-mapper development List-Id: dm-devel.ids T24gRnIsIDIwMTgtMDMtMjMgYXQgMTU6MDAgLTA1MDAsIEJlbmphbWluIE1hcnppbnNraSB3cm90 ZToKPiBXaGlsZSB0aGUgcmN1IGNvZGUgaXMgd2FpdGluZyBmb3IgYSBncmFjZSBwZXJpb2QgdG8g ZWxhcHNlLCBubwo+IHRocmVhZHMKPiBjYW4gcmVnaXN0ZXIgb3IgdW5yZWdpc3RlciBhcyByY3Ug cmVhZGVyIHRocmVhZHMuIElmIGZvciBzb21lIHJlYXNvbiwKPiBhCj4gdGhyZWFkIG5ldmVyIGNh bGxzIHB1dF9tdWx0aXBhdGhfY29uZmlnKCkgdG8gZXhpdCBhIHJlYWQgc2lkZQo+IGNyaXRpY2Fs Cj4gc2VjdGlvbiwgdGhlbiBhbnkgdGhyZWFkcyB0cnlpbmcgdG8gc3RhcnQgb3Igc3RvcCB3aWxs IGhhbmcuIFRoaXMgY2FuCj4gaGFwcGVuIGlmIGEgdGhyZWFkIGlzIGNhbmNlbGxlZCBiZXR3ZWVu IGNhbGxzIHRvCj4gZ2V0X211bHRpcGF0aF9jb25maWcoKQo+IGFuZCBwdXRfbXVsdGlwYXRoX2Nv bmZpZygpLCBhbmQgbXVsdGlwYXRoZCBpcyByZWNvbmZpZ3VyZWQgKHdoaWNoCj4gY2F1c2VzCj4g dGhlIHJjdSBjb2RlIHRvIHdhaXQgZm9yIGEgZ3JhY2UgcGVyaW9kKS4KPiAKPiBUaGlzIHBhdGNo IGZpeGVzIHRoaXMgaXNzdWUgaW4gdHdvIHdheXMuIFdoZXJlIHBvc3NpYmxlLCBpdCByZW9yZGVy cwo+IHRoZQo+IGNvZGUgb3Igc2F2ZXMgY29uZmlnIHZhbHVlcyBpbnRvIGxvY2FsIHZhcmlhYmxl cyB0byByZW1vdmUKPiBjYW5jZWxsYXRpb24KPiBwb2ludHMgYmV0d2VlbiBjYWxscyB0byBnZXRf bXVsdGlwYXRoX2NvbmZpZygpIGFuZAo+IHB1dF9tdWx0aXBhdGhfY29uZmlnKCkuICBJbiBjYXNl cyB3aGVyZSB0aGlzIGlzbid0IHBvc3NpYmxlIChvciB3aGVyZQo+IGl0Cj4gd291bGQgY2F1c2Ug YSBzaWduaWZpY2FudCBhbW91bnQgb2YgZXh0cmEgd29yayB0byBiZSBkb25lKSBtdWx0aXBhdGgK PiBub3cKPiBwdXNoZXMgYSBjbGVhbnVwIGhhbmRsZXIgdG8gY2FsbCBwdXRfbXVsdGlwYXRoX2Nv bmZpZygpLgo+IAo+IFRoZSBvbmx5IGZ1bmN0aW9ucyB0aGF0IHdlcmUgbm90IG1vZGlmaWVkIHdl cmUgb25lcyB0aGF0IHdlcmUgb25seQo+IGNhbGxlZCBieSBtdWx0aXBhdGggb3IgbXBhdGhwZXJz aXN0LCBzaW5jZSB0aGVzZSBhcmUgc2luZ2xlIHRocmVhZGVkCj4gYW5kIGFscmVhZHkgZGlzYWJs ZSByY3UgdGhyZWFkIHJlZ2lzdHJhdGlvbi4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBCZW5qYW1pbiBN YXJ6aW5za2kgPGJtYXJ6aW5zQHJlZGhhdC5jb20+CgpLdWRvcyBmb3IgZG9pbmcgdGhpcyBtZXRp Y3Vsb3VzIHdvcmshCgpSZXZpZXdlZC1ieTogTWFydGluIFdpbGNrIDxtd2lsY2tAc3VzZS5jb20+ CgooSSBhZG1pdCBteSByZXZpZXcgd2Fzbid0IGluIGRlcHRoLiBJIGZ1bGx5IGFjayB0aGUgaWRl YSBvZiB0aGUgcGF0Y2gsIAphbmQgSSBzY2FubmVkIHRocm91Z2ggaXQgd2l0aG91dCBzcG90dGlu ZyBvYnZpb3VzIGVycm9ycy4gSSBkaWQgbm90CmNoZWNrIHdoZXRoZXIgeW91IHNob3VsZCBoYXZl IGNoYW5nZWQgbW9yZSBjb2RlIGFzIHlvdSBhbHJlYWR5IGRpZCkuCgpIZXJlJ3MgYSBzdWdnZXN0 aW9uLCBhcyBJIHRoaW5rIHRoaXMgaXMgZ2V0dGluZyBwcmV0dHkgdWdseSAobm90IHlvdXIKZmF1 bHQpLiBNYXliZSB3ZSBzaG91bGQgcmVuYW1lIGdldF9tdWx0aXBhdGhfY29uZmlnKCkgdG8KX19n ZXRfbXVsdGlwYXRoX2NvbmZpZygpIGFuZCBkbyBzb21ldGhpbmcgbGlrZQoKI2RlZmluZSBiZWdp bl93aXRoX2NvbmZpZyhjb25mKSBcCiAgICBfX2dldF9tdWx0aXBhdGhfY29uZmlnKGNvbmYpOyBc CiAgICBwdGhyZWFkX2NsZWFudXBfcHVzaChfX3B1dF9tdWx0aXBhdGhfY29uZmlnLCBjb25mKTsg XAogICAgZG8KCiNkZWZpbmUgZW5kX3dpdGhfY29uZmlnKGNvbmYpIFwKICAgIHdoaWxlKDApOyBc CiAgICBwdGhyZWFkX2NsZWFudXBfcG9wKDEpCgouLi4gYW5kIHJlcXVpcmUgdGhhdCBhbGwgY29k ZSBibG9ja3MgYWNjZXNzaW5nIHRoZSBjb25maWd1cmF0aW9uIHNob3VsZApiZSBjb2RlZCBsaWtl IHRoaXM6CgpiZWdpbl93aXRoX2NvbmZpZyhjb25mKSB7CiAgICAuLi4gQ09ERSAuLi4KfSBlbmRf d2l0aF9jb25maWcoY29uZik7CgpJTU8gdGhhdCdkIGltcHJvdmUgcmVhZGFiaWxpdHkgYW5kIHJl ZHVjZSBsaWtlbGlob29kIG9mIGVycm9ycy4KCkFzIHlvdSdyZSB0b3VjaGluZyBzbyBtYW55IGxp bmVzIG9mIGNvZGUgYW55d2F5LCB0aGF0IHdvdWxkbid0IGJlIHRoYXQKbXVjaCBoYXJkZXIgOi0v CgpSZWdhcmRzLApNYXJ0aW4KCgotLSAKRHIuIE1hcnRpbiBXaWxjayA8bXdpbGNrQHN1c2UuY29t PiwgVGVsLiArNDkgKDApOTExIDc0MDUzIDIxMDcKU1VTRSBMaW51eCBHbWJILCBHRjogRmVsaXgg SW1lbmTDtnJmZmVyLCBKYW5lIFNtaXRoYXJkLCBHcmFoYW0gTm9ydG9uCkhSQiAyMTI4NCAoQUcg TsO8cm5iZXJnKQoKLS0KZG0tZGV2ZWwgbWFpbGluZyBsaXN0CmRtLWRldmVsQHJlZGhhdC5jb20K aHR0cHM6Ly93d3cucmVkaGF0LmNvbS9tYWlsbWFuL2xpc3RpbmZvL2RtLWRldmVs