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Commit 0667b1e9 authored by Trond Myklebust's avatar Trond Myklebust Committed by J. Bruce Fields
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nfsd: Add reference counting to nfs4_preprocess_confirmed_seqid_op 



Ensure that all the callers put the open stateid after use.
Necessary step toward client_mutex removal.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 2585fc79

fs/nfsd/nfs4state.c

+9 −4
Original line number Diff line number Diff line
@@ -4405,6 +4405,8 @@ 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;
@@ -4509,12 +4511,12 @@ 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);
@@ -4523,6 +4525,8 @@ 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:

	nfs4_put_stid(&stp->st_stid);

out:

	nfsd4_bump_seqid(cstate, status);

	if (!cstate->replay_owner)
@@ -4883,6 +4887,7 @@ 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;
@@ -4910,8 +4915,6 @@ 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,
@@ -5039,6 +5042,8 @@ out: 
		fput(filp);

	if (lock_stp)

		nfs4_put_stid(&lock_stp->st_stid);

	if (open_stp)

		nfs4_put_stid(&open_stp->st_stid);

	if (status && new_state)

		release_lock_stateid(lock_stp);

	nfsd4_bump_seqid(cstate, status);