From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: linux-nfs-owner@vger.kernel.org Received: from dgate10.ts.fujitsu.com ([80.70.172.49]:57865 "EHLO dgate10.ts.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750923Ab3CKQNn (ORCPT ); Mon, 11 Mar 2013 12:13:43 -0400 Message-Id: Date: 11 Mar 2013 17:13:41 +0100 From: Bodo Stroesser To: neilb@suse.de Cc: bfields@fieldses.org, linux-nfs@vger.kernel.org, bstroesser@ts.fujitsu.com Subject: sunrpc/cache.c: races while updating cache entries Content-Type: text/plain; charset=us-ascii Sender: linux-nfs-owner@vger.kernel.org List-ID: SGksCgpBRkFJQ1MsIHRoZXJlIGlzIG9uZSBtb3JlIHJhY2UgaW4gUlBDIGNhY2hlLgoKVGhl IHByb2JsZW0gc2hvd2VkIHVwIGZvciB0aGUgImF1dGgudW5peC5pcCIgY2FjaGUsIHRoYXQK aGFzIGEgcmVhZGVyLgoKSWYgYSBzZXJ2ZXIgdGhyZWFkIHRyaWVzIHRvIGZpbmQgYSBjYWNo ZSBlbnRyeSwgaXQgZmlyc3QKZG9lcyBhIGxvb2t1cCAob3IgY2FsbHMgaXBfbWFwX2NhY2hl ZF9nZXQoKSBpbiB0aGlzIHNwZWNpZmljCmNhc2UpLiBUaGVuLCBpdCBjYWxscyBjYWNoZV9j aGVjaygpIGZvciB0aGlzIGVudHJ5LgoKSWYgdGhlIHJlYWRlciB1cGRhdGVzIHRoZSBjYWNo ZSBlbnRyeSBqdXN0IGJldHdlZW4gdGhlCnRocmVhZCdzIGxvb2t1cCBhbmQgY2FjaGVfY2hl Y2soKSBleGVjdXRpb24sIGNhY2hlX2NoZWNrKCkKd2lsbCBkbyBhbiB1cGNhbGwgZm9yIHRo aXMgY2FjaGUgZW50cnkuIFRoaXMgaXMsIGJlY2F1c2UKc3VucnBjX2NhY2hlX3VwZGF0ZSgp IGNhbGxzIGNhY2hlX2ZyZXNoX2xvY2tlZChvbGQsIDApLAp3aGljaCBzZXRzIGV4cGlyeV90 aW1lIHRvIDAuCgpVbmZvcnR1bmF0ZWx5LCB0aGUgcmVwbHkgdG8gdGhlIHVwY2FsbCB3aWxs IG5vdCBkZXF1ZXVlCnRoZSBxdWV1ZWQgY2FjaGVfcmVxdWVzdCwgYXMgdGhlIHJlcGx5IHdp bGwgYmUgYXNzaWduZWQgdG8KdGhlIGNhY2hlIGVudHJ5IG5ld2x5IGNyZWF0ZWQgYnkgdGhl IGFib3ZlIGNhY2hlIHVwZGF0ZS4KClRoZSByZXN1bHQgaXMgYSBncm93aW5nIHF1ZXVlIG9m IG9ycGhhbmVkIGNhY2hlX3JlcXVlc3QKc3RydWN0dXJlcyAtLT4gbWVtb3J5IGxlYWsuCgpJ IGZvdW5kIHRoaXMgb24gYSBTTEVTMTEgU1AxIHdpdGggYSBiYWNrcG9ydCBvZiB0aGUgbGF0 ZXN0CnBhdGNoZXMgdGhhdCBmaXggdGhlIG90aGVyIFJQQyByYWNlcy4gT24gdGhpcyBvbGQg a2VybmVsLAp0aGUgcHJvYmxlbSBhbHNvIGxlYWRzIHRvIHN2Y19kcm9wKCkgYmVpbmcgY2Fs bGVkIGZvciB0aGUKYWZmZWN0ZWQgUlBDIHJlcXVlc3QgKGFmdGVyIHN2Y19kZWZlcigpKS4K CkJlc3QgUmVnYXJkcwpCb2RvCg==