From mboxrd@z Thu Jan 1 00:00:00 1970 From: "bfields@fieldses.org" Subject: Re: [PATCH] SUNRPC: skip dead but not buried clients on PipeFS events Date: Thu, 19 Apr 2012 17:40:43 -0400 Message-ID: <20120419214043.GA23309@fieldses.org> References: <20120419105707.32131.79719.stgit@localhost6.localdomain6> <4F8FF8D9.5080503@parallels.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: "Trond.Myklebust@netapp.com" , "linux-nfs@vger.kernel.org" , Pavel Emelianov , "neilb@suse.de" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , James Bottomley , "davem@davemloft.net" , "devel@openvz.org" To: Stanislav Kinsbursky Return-path: Received: from fieldses.org ([174.143.236.118]:33018 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933493Ab2DSVkt (ORCPT ); Thu, 19 Apr 2012 17:40:49 -0400 Content-Disposition: inline In-Reply-To: <4F8FF8D9.5080503@parallels.com> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, Apr 19, 2012 at 03:36:57PM +0400, Stanislav Kinsbursky wrote: > Sorry, but ignore this patch too. > It can't be that simple because of these cl_count tricks in rpc_relea= se_client... OK. Very minor whine: >=20 > 19.04.2012 14:57, Stanislav Kinsbursky =D0=BF=D0=B8=D1=88=D0=B5=D1=82= : > >These clients can't be safely dereferenced if their counter in 0. > > > >Signee-off-by: Stanislav Kinsbursky > > > >Signed-off-by: Stanislav Kinsbursky I don't mind fixing up trivial slips every now and then, but that doubl= e signed-off-by seems to happen on a lot of your posts; could you figure out what's up with your scripts? --b. > > > >--- > > net/sunrpc/clnt.c | 3 ++- > > 1 files changed, 2 insertions(+), 1 deletions(-) > > > >diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c > >index 6797246..591994d 100644 > >--- a/net/sunrpc/clnt.c > >+++ b/net/sunrpc/clnt.c > >@@ -218,7 +218,8 @@ static struct rpc_clnt *rpc_get_client_for_event= (struct net *net, int event) > > if (((event =3D=3D RPC_PIPEFS_MOUNT)&& clnt->cl_dentry) || > > ((event =3D=3D RPC_PIPEFS_UMOUNT)&& !clnt->cl_dentry)) > > continue; > >- atomic_inc(&clnt->cl_count); > >+ if (atomic_inc_return(&clnt->cl_count) =3D=3D 1) > >+ continue; > > spin_unlock(&sn->rpc_client_lock); > > return clnt; > > } > > >=20 >=20 > --=20 > Best regards, > Stanislav Kinsbursky > -- > To unsubscribe from this list: send the line "unsubscribe linux-kerne= l" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/