From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
In preparation of reference counting.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 27 ++++++++++++++++++---------
1 file changed, 18 insertions(+), 9 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index f5865a8e3081..54c9631a602c 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1660,28 +1660,37 @@ static void gen_confirm(struct nfs4_client *clp)
memcpy(clp->cl_confirm.data, verf, sizeof(clp->cl_confirm.data));
}
-static struct nfs4_stid *find_stateid(struct nfs4_client *cl, stateid_t *t)
+static struct nfs4_stid *
+find_stateid_locked(struct nfs4_client *cl, stateid_t *t)
{
struct nfs4_stid *ret;
- spin_lock(&cl->cl_lock);
ret = idr_find(&cl->cl_stateids, t->si_opaque.so_id);
- spin_unlock(&cl->cl_lock);
if (!ret || !ret->sc_type)
return NULL;
return ret;
}
+static struct nfs4_stid *find_stateid(struct nfs4_client *cl, stateid_t *t)
+{
+ struct nfs4_stid *ret;
+
+ spin_lock(&cl->cl_lock);
+ ret = find_stateid_locked(cl, t);
+ spin_unlock(&cl->cl_lock);
+ return ret;
+}
+
static struct nfs4_stid *find_stateid_by_type(struct nfs4_client *cl, stateid_t *t, char typemask)
{
struct nfs4_stid *s;
- s = find_stateid(cl, t);
- if (!s)
- return NULL;
- if (typemask & s->sc_type)
- return s;
- return NULL;
+ spin_lock(&cl->cl_lock);
+ s = find_stateid_locked(cl, t);
+ if (s != NULL && !(typemask & s->sc_type))
+ s = NULL;
+ spin_unlock(&cl->cl_lock);
+ return s;
}
static struct nfs4_client *create_client(struct xdr_netobj name,
--
1.9.3
--
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