Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-qc0-f171.google.com ([209.85.216.171]:61470 "EHLO mail-qc0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932332AbaGUPD1 (ORCPT ); Mon, 21 Jul 2014 11:03:27 -0400 Received: by mail-qc0-f171.google.com with SMTP id i17so5711068qcy.16 for ; Mon, 21 Jul 2014 08:03:26 -0700 (PDT) From: Jeff Layton To: bfields@fieldses.org Cc: linux-nfs@vger.kernel.org, hch@infradead.org, Trond Myklebust Subject: [PATCH 19/40] nfsd: Add reference counting to nfs4_preprocess_confirmed_seqid_op Date: Mon, 21 Jul 2014 11:02:31 -0400 Message-Id: <1405954972-28904-20-git-send-email-jlayton@primarydata.com> In-Reply-To: <1405954972-28904-1-git-send-email-jlayton@primarydata.com> References: <1405954972-28904-1-git-send-email-jlayton@primarydata.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: From: Trond Myklebust Ensure that all the callers put the open stateid after use. Necessary step toward client_mutex removal. Signed-off-by: Trond Myklebust --- fs/nfsd/nfs4state.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 1e95727e5f01..f9a3fcd4e217 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4422,6 +4422,8 @@ static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cs NFS4_OPEN_STID, stpp, nn); if (status) return status; + /* FIXME: move into nfs4_preprocess_seqid_op */ + atomic_inc(&(*stpp)->st_stid.sc_count); oo = openowner((*stpp)->st_stateowner); if (!(oo->oo_flags & NFS4_OO_CONFIRMED)) return nfserr_bad_stateid; @@ -4526,12 +4528,12 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp, if (!test_access(od->od_share_access, stp)) { dprintk("NFSD: access not a subset of current bitmap: 0x%hhx, input access=%08x\n", stp->st_access_bmap, od->od_share_access); - goto out; + goto put_stateid; } if (!test_deny(od->od_share_deny, stp)) { dprintk("NFSD: deny not a subset of current bitmap: 0x%hhx, input deny=%08x\n", stp->st_deny_bmap, od->od_share_deny); - goto out; + goto put_stateid; } nfs4_stateid_downgrade(stp, od->od_share_access); @@ -4540,6 +4542,8 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp, update_stateid(&stp->st_stid.sc_stateid); memcpy(&od->od_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t)); status = nfs_ok; +put_stateid: + put_generic_stateid(stp); out: nfsd4_bump_seqid(cstate, status); if (!cstate->replay_owner) @@ -4892,6 +4896,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfs4_openowner *open_sop = NULL; struct nfs4_lockowner *lock_sop = NULL; struct nfs4_ol_stateid *lock_stp = NULL; + struct nfs4_ol_stateid *open_stp = NULL; struct nfs4_file *fp; struct file *filp = NULL; struct file_lock *file_lock = NULL; @@ -4919,8 +4924,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, nfs4_lock_state(); if (lock->lk_is_new) { - struct nfs4_ol_stateid *open_stp = NULL; - if (nfsd4_has_session(cstate)) /* See rfc 5661 18.10.3: given clientid is ignored: */ memcpy(&lock->v.new.clientid, @@ -5048,6 +5051,8 @@ out: fput(filp); if (lock_stp) put_generic_stateid(lock_stp); + if (open_stp) + put_generic_stateid(open_stp); if (status && new_state) release_lock_stateid(lock_stp); nfsd4_bump_seqid(cstate, status); -- 1.9.3