Return-Path: linux-nfs-owner@vger.kernel.org Received: from dgate10.ts.fujitsu.com ([80.70.172.49]:33684 "EHLO dgate10.ts.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754253Ab3BUPon (ORCPT ); Thu, 21 Feb 2013 10:44:43 -0500 Message-Id: Date: 21 Feb 2013 16:44:41 +0100 From: Bodo Stroesser To: neilb@suse.de Cc: bfields@fieldses.org, linux-nfs@vger.kernel.org, bstroesser@ts.fujitsu.com Subject: Re: [PATCH] sunrpc.ko: RPC cache fix races Content-Type: text/plain; charset=us-ascii Sender: linux-nfs-owner@vger.kernel.org List-ID: T24gMjEgRmViIDIwMTMgMDA6NTU6MDAgKzAxMDAgbmVpbGJAc3VzZS5kZSB3cm90ZToKCj4g T24gMjAgRmViIDIwMTMgMTQ6NTc6MDcgKzAxMDAgYnN0cm9lc3NlckB0cy5mdWppdHN1LmNv bSB3cm90ZToKPiAKPiA+IE9uIDIwIEZlYiAyMDEzIDA0OjA5OjAwICswMTAwIG5laWxiQHN1 c2UuZGUgd3JvdGU6CgpzbmlwCgo+ID4gPiBNYXliZToKPiA+ID4gCj4gPiA+ICAgc3dpdGNo KGNhY2hlX21ha2VfdXBjYWxsKGRldGFpbCwgaCkpIHsKPiA+ID4gICBjYXNlIC1FSU5WQUw6 Cj4gPiA+ICAgICAgICAgaWYgKHJ2KSB7Cj4gPiA+IAkJc2V0X2JpdChDQUNIRV9ORUdBVElW RSwgJmgtPmZsYWdzKTsKPiA+ID4gCQljYWNoZV9mcmVzaF9sb2NrZWQoaCwgZ2V0X3NlY29u ZHMoKSArIENBQ0hFX05FV19FWFBJUlkpOwo+ID4gPiAJCXJ2ID0gLUVOT0VOVDsKPiA+ID4g CX0KPiA+ID4gCS8qIEZBTExUSFJPVUdIICovCj4gPiA+ICAgY2FzZSAtRUFHQUlOOgo+ID4g PiAJY2FjaGVfZnJlc2hfdW5sb2NrZWQoaCwgZGV0YWlsKTsKPiA+ID4gICB9Cj4gPiAKPiA+ IEkgYWdyZWUsIHlvdXIgcGF0Y2ggaXMgb2J2aW91c2x5IGJldHRlciB0aGFuIHRoZSBtaW5l Lgo+ID4gQnV0IGxldCBtZSBzdWdnZXN0IG9uZSBsaXR0bGUgY2hhbmdlOiBJIHdvdWxkIGxp a2UgdG8gc3Vic3RpdHV0ZQo+ID4gY2FjaGVfZnJlc2hfdW5sb2NrZWQoKSBieSBjbGVhcl9i aXQoKSBhbmQgY2FjaGVfcmV2aXNpdF9yZXF1ZXN0KCksCj4gPiBhcyB0aGUgY2FsbCB0byBj YWNoZV9kZXF1ZXVlKCkgaW4gY2FjaGVfZnJlc2hfdW5sb2NrZWQoKSBzZWVtcyB0bwo+ID4g YmUgb2Jzb2xldGUgaGVyZToKPiAKPiBJdCBpcyBleGFjdGx5IHRoaXMgc29ydCBvZiB0aGlu a2luZyAob24gbXkgcGFydCkgdGhhdCBnb3QgdXMgaW50byB0aGlzIG1lc3MKPiBpbiB0aGUg Zmlyc3QgcGxhY2UuICBJIHJlYXNvbmVkIHRoYXQgdGhlIGZ1bGwgbG9ja2luZy90ZXN0aW5n L3doYXRldmVyIHdhc24ndAo+IG5lY2Vzc2FyeSBhbmQgdG9vayBhIHNob3J0IGN1dC4gIEl0 IHdhc24ndCBhIGdvb2QgaWRlYS4KCk1heWJlIEknbSB0b3RhbGx5IHdyb25nLCBidXQgQUZB SUNTLCBjYWxsaW5nIGNhY2hlX2RlcXVldWUoKSBoZXJlIGluIGV4dHJlbWUKc2l0dWF0aW9u cyAodHdvIHRocmVhZHMgaW4gcGFyYWxsZWwgY2FsbGluZyBjaGVja19jYWNoZSgpIHdoaWxl IGEgZmlyc3QgcmVhZGVyCmlzIGdvaW5nIHRvIG9wZW4gY2FjaGUgYWNjZXNzKSBjb3VsZCBh Z2FpbiBjYXVzZSBhIHJhY2UgKD8pCgpCVFc6IGlmIHRoZXJlIGlzIGEgcmVhZGVyIGZvciBh IGNhY2hlLCBpcyB0aGVyZSBhbnkgcHJvdGVjdGlvbiBhZ2FpbnN0IG1hbnkKdXBjYWxscyBi ZWluZyBxdWV1ZWQgZm9yIHRoZSBzYW1lIGNhY2hlIGVudHJ5PwoKQm9kbwoKPiAKPiBHaXZl biB0aGF0IHRoaXMgaXMgb2J2aW91c2x5IGRpZmZpY3VsdCBjb2RlIHRvIGdldCByaWdodCwg d2Ugc2hvdWxkIG1ha2UgaXQKPiBhcyBlYXN5IHRvIHJldmlldyBhcyBwb3NzaWJsZS4gIEhh dmUgImNhY2hlX2ZyZXNoX3VubG9ja2VkIiBtYWtlcyBpdCBtb3JlCj4gb2J2aW91c2x5IGNv cnJlY3QsIGFuZCB0aGF0IGlzIGEgZ29vZCB0aGluZy4KPiBNYXliZSBjYWNoZV9kZXF1ZXVl IGlzbid0IG5lZWRlZCBoZXJlLCBidXQgaXQgd29uJ3QgaHVydCBzbyBJJ2QgbXVjaCByYXRo ZXIKPiBoYXZlIHRoZSBjbGVhcmVyIGNvZGUuCj4gSW4gZmFjdCwgSSdkIGFsc28gbGlrZSB0 byBjaGFuZ2UKPiAKPiAJCQlpZiAodGVzdF9hbmRfY2xlYXJfYml0KENBQ0hFX1BFTkRJTkcs ICZjaC0+ZmxhZ3MpKQo+IAkJCQljYWNoZV9kZXF1ZXVlKGN1cnJlbnRfZGV0YWlsLCBjaCk7 Cj4gCQkJY2FjaGVfcmV2aXNpdF9yZXF1ZXN0KGNoKTsKPiAKPiBuZWFyIHRoZSBlbmQgb2Yg Y2FjaGVfY2xlYW4gdG8gY2FsbCAgY2FjaGVfZnJlc2hfdW5sb2NrZWQoKS4KPiAK