NFS: Check if the slot table is draining from nfs4_setup_sequence()

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 9759d6f..a74e1a4 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -629,9 +629,6 @@ static int nfs40_setup_sequence(struct nfs4_slot_table *tbl,
 {
        struct nfs4_slot *slot;
 
-       if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
-               return -EAGAIN;
-
        slot = nfs4_alloc_slot(tbl);
        if (IS_ERR(slot)) {
                if (slot == ERR_PTR(-ENOMEM))
@@ -874,15 +871,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session,
        dprintk("--> %s\n", __func__);
        tbl = &session->fc_slot_table;
 
-       task->tk_timeout = 0;
-
-       if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) &&
-           !args->sa_privileged) {
-               /* The state manager will wait until the slot table is empty */
-               dprintk("%s session is draining\n", __func__);
-               return -EAGAIN;
-       }
-
        slot = nfs4_alloc_slot(tbl);
        if (IS_ERR(slot)) {
                /* If out of memory, try again in 1/4 second */
@@ -960,15 +948,22 @@ int nfs4_setup_sequence(const struct nfs_client *client,
                        struct rpc_task *task)
 {
        struct nfs4_session *session = nfs4_get_session(client);
-       struct nfs4_slot_table *tbl  = session ? &session->fc_slot_table :
-                                                 client->cl_slot_tbl;
+       struct nfs4_slot_table *tbl  = client->cl_slot_tbl;
        int ret;
 
        /* slot already allocated? */
        if (res->sr_slot != NULL)
                goto out_start;
 
+       if (session) {
+               tbl = &session->fc_slot_table;
+               task->tk_timeout = 0;
+       }
+
        spin_lock(&tbl->slot_tbl_lock);
+       /* The state manager will wait until the slot table is empty */
+       if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
+               goto out_sleep;
 
 #if defined(CONFIG_NFS_V4_1)
        if (session)