From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
...instead of relying on the client_mutex.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
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 314594a05952..8c3f63f9dd4e 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2798,22 +2798,23 @@ nfsd4_sequence_done(struct nfsd4_compoundres *resp)
__be32
nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_destroy_clientid *dc)
{
- struct nfs4_client *conf, *unconf, *clp;
+ struct nfs4_client *conf, *unconf;
+ struct nfs4_client *clp = NULL;
__be32 status = 0;
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
nfs4_lock_state();
+ spin_lock(&nn->client_lock);
unconf = find_unconfirmed_client(&dc->clientid, true, nn);
conf = find_confirmed_client(&dc->clientid, true, nn);
WARN_ON_ONCE(conf && unconf);
if (conf) {
- clp = conf;
-
if (client_has_state(conf)) {
status = nfserr_clientid_busy;
goto out;
}
+ clp = conf;
} else if (unconf)
clp = unconf;
else {
@@ -2821,12 +2822,16 @@ nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *csta
goto out;
}
if (!mach_creds_match(clp, rqstp)) {
+ clp = NULL;
status = nfserr_wrong_cred;
goto out;
}
- expire_client(clp);
+ unhash_client_locked(clp);
out:
+ spin_unlock(&nn->client_lock);
nfs4_unlock_state();
+ if (clp)
+ expire_client(clp);
return status;
}
--
1.9.3
--
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