From patchwork Wed May 25 15:47:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Lever X-Patchwork-Id: 12861393 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAE0CC433EF for ; Wed, 25 May 2022 15:47:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233702AbiEYPrp (ORCPT ); Wed, 25 May 2022 11:47:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245276AbiEYPrl (ORCPT ); Wed, 25 May 2022 11:47:41 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39B0B3464F for ; Wed, 25 May 2022 08:47:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C98846118F for ; Wed, 25 May 2022 15:47:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A32CC385B8 for ; Wed, 25 May 2022 15:47:40 +0000 (UTC) Subject: [PATCH v3 2/4] NFSD: Modernize nfsd4_release_lockowner() From: Chuck Lever To: linux-nfs@vger.kernel.org Date: Wed, 25 May 2022 11:47:39 -0400 Message-ID: <165349365921.4205.9219539107172894342.stgit@bazille.1015granger.net> In-Reply-To: <165349272692.4205.8499763565429173274.stgit@bazille.1015granger.net> References: <165349272692.4205.8499763565429173274.stgit@bazille.1015granger.net> User-Agent: StGit/1.5 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Refactor: Use existing helpers that other lock operations use. This change removes several automatic variables, so re-organize the variable declarations for readability. Signed-off-by: Chuck Lever --- fs/nfsd/nfs4state.c | 36 +++++++++++------------------------- 1 file changed, 11 insertions(+), 25 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 4e0850a10550..e2f8b04fca92 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -7530,16 +7530,13 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, union nfsd4_op_u *u) { struct nfsd4_release_lockowner *rlockowner = &u->release_lockowner; + struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); clientid_t *clid = &rlockowner->rl_clientid; - struct nfs4_stateowner *sop; - struct nfs4_lockowner *lo = NULL; struct nfs4_ol_stateid *stp; - struct xdr_netobj *owner = &rlockowner->rl_owner; - unsigned int hashval = ownerstr_hashval(owner); - __be32 status; - struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); + struct nfs4_lockowner *lo; struct nfs4_client *clp; - LIST_HEAD (reaplist); + LIST_HEAD(reaplist); + __be32 status; dprintk("nfsd4_release_lockowner clientid: (%08x/%08x):\n", clid->cl_boot, clid->cl_id); @@ -7547,30 +7544,19 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, status = set_client(clid, cstate, nn); if (status) return status; - clp = cstate->clp; - /* Find the matching lock stateowner */ - spin_lock(&clp->cl_lock); - list_for_each_entry(sop, &clp->cl_ownerstr_hashtbl[hashval], - so_strhash) { - if (sop->so_is_open_owner || !same_owner_str(sop, owner)) - continue; - - if (atomic_read(&sop->so_count) != 1) { - spin_unlock(&clp->cl_lock); - return nfserr_locks_held; - } - - lo = lockowner(sop); - nfs4_get_stateowner(sop); - break; - } + spin_lock(&clp->cl_lock); + lo = find_lockowner_str_locked(clp, &rlockowner->rl_owner); if (!lo) { spin_unlock(&clp->cl_lock); return status; } - + if (atomic_read(&lo->lo_owner.so_count) != 2) { + spin_unlock(&clp->cl_lock); + nfs4_put_stateowner(&lo->lo_owner); + return nfserr_locks_held; + } unhash_lockowner_locked(lo); while (!list_empty(&lo->lo_owner.so_stateids)) { stp = list_first_entry(&lo->lo_owner.so_stateids,