nfsd: declare v4.1+ openowners confirmed on creation

There's no need to confirm an openowner in v4.1 and above, so we can
go ahead and set NFS4_OO_CONFIRMED when we create openowners in
those versions. This will also be necessary when we remove the
client_mutex, as it'll be possible for two concurrent opens to race
in versions >4.0.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 993da47cbc06..106db71e0eef 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2719,7 +2719,10 @@ static void hash_openowner(struct nfs4_openowner *oo, struct nfs4_client *clp, u
 }
 
 static struct nfs4_openowner *
-alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfsd4_open *open) {
+alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp,
+                           struct nfsd4_open *open,
+                           struct nfsd4_compound_state *cstate)
+{
         struct nfs4_openowner *oo;
 
         oo = alloc_stateowner(openowner_slab, &open->op_owner, clp);
@@ -2728,6 +2731,8 @@ alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, str
         oo->oo_owner.so_is_open_owner = 1;
         oo->oo_owner.so_seqid = open->op_seqid;
         oo->oo_flags = NFS4_OO_NEW;
+        if (nfsd4_has_session(cstate))
+                oo->oo_flags |= NFS4_OO_CONFIRMED;
         oo->oo_time = 0;
         oo->oo_last_closed_stid = NULL;
         INIT_LIST_HEAD(&oo->oo_close_lru);
@@ -2987,7 +2992,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
         clp = oo->oo_owner.so_client;
         goto alloc_stateid;
 new_owner:
-        oo = alloc_init_open_stateowner(strhashval, clp, open);
+        oo = alloc_init_open_stateowner(strhashval, clp, open, cstate);
         if (oo == NULL)
                 return nfserr_jukebox;
         open->op_openowner = oo;
@@ -3397,8 +3402,6 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
         memcpy(&open->op_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
 
         if (nfsd4_has_session(&resp->cstate)) {
-                open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
-
                 if (open->op_deleg_want & NFS4_SHARE_WANT_NO_DELEG) {
                         open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT;
                         open->op_why_no_deleg = WND4_NOT_WANTED;
@@ -3792,8 +3795,9 @@ nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate,
 
         nfs4_lock_state();
 
-        status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
-                                      &s, cstate->minorversion, nn);
+        status = nfsd4_lookup_stateid(stateid,
+                                NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
+                                &s, cstate->minorversion, nn);
         if (status)
                 goto out;
         status = check_stateid_generation(stateid, &s->sc_stateid, nfsd4_has_session(cstate));