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Commit 3d35808b authored by Anna Schumaker's avatar Anna Schumaker
Browse files

NFS: Merge the remaining setup_sequence functions 



This creates a single place for all the work to happen, using the
presence of a session to determine if extra values need to be set.

Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 76ee0354

fs/nfs/nfs4proc.c

+20 −67
Original line number Diff line number Diff line
@@ -622,26 +622,6 @@ static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) 
	args->sa_privileged = 1;

}



static int nfs40_setup_sequence(struct nfs4_slot_table *tbl,

				struct nfs4_sequence_args *args,

				struct nfs4_sequence_res *res,

				struct rpc_task *task)

{

	struct nfs4_slot *slot;



	slot = nfs4_alloc_slot(tbl);

	if (IS_ERR(slot)) {

		if (slot == ERR_PTR(-ENOMEM))

			task->tk_timeout = HZ >> 2;

		return -EAGAIN;

	}



	slot->privileged = args->sa_privileged ? 1 : 0;

	args->sa_slot = slot;

	res->sr_slot = slot;

	return 0;

}



static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res)

{

	struct nfs4_slot *slot = res->sr_slot;
@@ -860,44 +840,6 @@ int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) 
}

EXPORT_SYMBOL_GPL(nfs4_sequence_done);



static int nfs41_setup_sequence(struct nfs4_session *session,

				struct nfs4_sequence_args *args,

				struct nfs4_sequence_res *res,

				struct rpc_task *task)

{

	struct nfs4_slot *slot;

	struct nfs4_slot_table *tbl;



	dprintk("--> %s\n", __func__);

	tbl = &session->fc_slot_table;



	slot = nfs4_alloc_slot(tbl);

	if (IS_ERR(slot)) {

		/* If out of memory, try again in 1/4 second */

		if (slot == ERR_PTR(-ENOMEM))

			task->tk_timeout = HZ >> 2;

		dprintk("<-- %s: no free slots\n", __func__);

		return -EAGAIN;

	}



	slot->privileged = args->sa_privileged ? 1 : 0;

	args->sa_slot = slot;



	dprintk("<-- %s slotid=%u seqid=%u\n", __func__,

			slot->slot_nr, slot->seq_nr);



	res->sr_slot = slot;

	res->sr_timestamp = jiffies;

	res->sr_status_flags = 0;

	/*

	 * sr_status is only set in decode_sequence, and so will remain

	 * set to 1 if an rpc level failure occurs.

	 */

	res->sr_status = 1;

	trace_nfs4_setup_sequence(session, args);

	return 0;

}



static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)

{

	struct nfs4_call_sync_data *data = calldata;
@@ -949,7 +891,7 @@ int nfs4_setup_sequence(const struct nfs_client *client, 
{

	struct nfs4_session *session = nfs4_get_session(client);

	struct nfs4_slot_table *tbl  = client->cl_slot_tbl;

	int ret;

	struct nfs4_slot *slot;



	/* slot already allocated? */

	if (res->sr_slot != NULL)
@@ -965,17 +907,28 @@ int nfs4_setup_sequence(const struct nfs_client *client, 
	if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)

		goto out_sleep;



#if defined(CONFIG_NFS_V4_1)

	if (session)

		ret = nfs41_setup_sequence(session, args, res, task);

	else

#endif /* CONFIG_NFS_V4_1 */

		ret = nfs40_setup_sequence(client->cl_slot_tbl, args, res, task);



	if (ret == -EAGAIN)

	slot = nfs4_alloc_slot(tbl);

	if (IS_ERR(slot)) {

		/* Try again in 1/4 second */

		if (slot == ERR_PTR(-ENOMEM))

			task->tk_timeout = HZ >> 2;

		goto out_sleep;

	}

	spin_unlock(&tbl->slot_tbl_lock);



	slot->privileged = args->sa_privileged ? 1 : 0;

	args->sa_slot = slot;



	res->sr_slot = slot;

	if (session) {

		res->sr_timestamp = jiffies;

		res->sr_status_flags = 0;

		res->sr_status = 1;

#ifdef CONFIG_NFS_V4_1

		trace_nfs4_setup_sequence(session, args);

#endif /* CONFIG_NFS_V4_1 */

	}



out_start:

	rpc_call_start(task);

	return 0;