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Commit 52c9948b authored by Trond Myklebust's avatar Trond Myklebust
Browse files

Merge branch 'nfs-for-2.6.33'

parents f4054253 190f38e5

fs/nfs/callback.c

+1 −12
Original line number Diff line number Diff line
@@ -78,11 +78,6 @@ nfs4_callback_svc(void *vrqstp) 


	set_freezable();



	/*

	 * FIXME: do we really need to run this under the BKL? If so, please

	 * add a comment about what it's intended to protect.

	 */

	lock_kernel();

	while (!kthread_should_stop()) {

		/*

		 * Listen for a request on the socket
@@ -104,7 +99,6 @@ nfs4_callback_svc(void *vrqstp) 
		preverr = err;

		svc_process(rqstp);

	}

	unlock_kernel();

	return 0;

}
@@ -160,11 +154,6 @@ nfs41_callback_svc(void *vrqstp) 


	set_freezable();



	/*

	 * FIXME: do we really need to run this under the BKL? If so, please

	 * add a comment about what it's intended to protect.

	 */

	lock_kernel();

	while (!kthread_should_stop()) {

		prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_INTERRUPTIBLE);

		spin_lock_bh(&serv->sv_cb_lock);
@@ -183,7 +172,6 @@ nfs41_callback_svc(void *vrqstp) 
		}

		finish_wait(&serv->sv_cb_waitq, &wq);

	}

	unlock_kernel();

	return 0;

}
@@ -397,6 +385,7 @@ static int nfs_callback_authenticate(struct svc_rqst *rqstp) 
 */

static struct svc_version *nfs4_callback_version[] = {

	[1] = &nfs4_callback_version1,

	[4] = &nfs4_callback_version4,

};



static struct svc_stat nfs4_callback_stats;

fs/nfs/callback.h

+15 −1
Original line number Diff line number Diff line
@@ -106,6 +106,19 @@ struct cb_sequenceres { 
extern unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,

				       struct cb_sequenceres *res);



extern int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation,

					     const nfs4_stateid *stateid);



#define RCA4_TYPE_MASK_RDATA_DLG	0

#define RCA4_TYPE_MASK_WDATA_DLG	1



struct cb_recallanyargs {

	struct sockaddr	*craa_addr;

	uint32_t	craa_objs_to_keep;

	uint32_t	craa_type_mask;

};



extern unsigned nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy);

#endif /* CONFIG_NFS_V4_1 */



extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res);
@@ -114,8 +127,9 @@ extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy); 
#ifdef CONFIG_NFS_V4

extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt);

extern void nfs_callback_down(int minorversion);

extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation,

					    const nfs4_stateid *stateid);

#endif /* CONFIG_NFS_V4 */



/*

 * nfs41: Callbacks are expected to not cause substantial latency,

 * so we limit their concurrency to 1 by setting up the maximum number

fs/nfs/callback_proc.c

+63 −1
Original line number Diff line number Diff line
@@ -61,6 +61,16 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres * 
	return res->status;

}



static int (*nfs_validate_delegation_stateid(struct nfs_client *clp))(struct nfs_delegation *, const nfs4_stateid *)

{

#if defined(CONFIG_NFS_V4_1)

	if (clp->cl_minorversion > 0)

		return nfs41_validate_delegation_stateid;

#endif

	return nfs4_validate_delegation_stateid;

}





__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)

{

	struct nfs_client *clp;
@@ -81,7 +91,8 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) 
		inode = nfs_delegation_find_inode(clp, &args->fh);

		if (inode != NULL) {

			/* Set up a helper thread to actually return the delegation */

			switch(nfs_async_inode_return_delegation(inode, &args->stateid)) {

			switch (nfs_async_inode_return_delegation(inode, &args->stateid,

								  nfs_validate_delegation_stateid(clp))) {

				case 0:

					res = 0;

					break;
@@ -102,8 +113,31 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) 
	return res;

}



int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)

{

	if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data,

					 sizeof(delegation->stateid.data)) != 0)

		return 0;

	return 1;

}



#if defined(CONFIG_NFS_V4_1)



int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)

{

	if (delegation == NULL)

		return 0;



	/* seqid is 4-bytes long */

	if (((u32 *) &stateid->data)[0] != 0)

		return 0;

	if (memcmp(&delegation->stateid.data[4], &stateid->data[4],

		   sizeof(stateid->data)-4))

		return 0;



	return 1;

}



/*

 * Validate the sequenceID sent by the server.

 * Return success if the sequenceID is one more than what we last saw on
@@ -227,4 +261,32 @@ unsigned nfs4_callback_sequence(struct cb_sequenceargs *args, 
	return res->csr_status;

}



unsigned nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy)

{

	struct nfs_client *clp;

	int status;

	fmode_t flags = 0;



	status = htonl(NFS4ERR_OP_NOT_IN_SESSION);

	clp = nfs_find_client(args->craa_addr, 4);

	if (clp == NULL)

		goto out;



	dprintk("NFS: RECALL_ANY callback request from %s\n",

		rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));



	if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)

		     &args->craa_type_mask))

		flags = FMODE_READ;

	if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)

		     &args->craa_type_mask))

		flags |= FMODE_WRITE;



	if (flags)

		nfs_expire_all_delegation_types(clp, flags);

	status = htonl(NFS4_OK);

out:

	dprintk("%s: exit with status = %d\n", __func__, ntohl(status));

	return status;

}

#endif /* CONFIG_NFS_V4_1 */

fs/nfs/callback_xdr.c

+33 −1
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#if defined(CONFIG_NFS_V4_1)

#define CB_OP_SEQUENCE_RES_MAXSZ	(CB_OP_HDR_RES_MAXSZ + \

					4 + 1 + 3)

#define CB_OP_RECALLANY_RES_MAXSZ	(CB_OP_HDR_RES_MAXSZ)

#endif /* CONFIG_NFS_V4_1 */



#define NFSDBG_FACILITY NFSDBG_CALLBACK
@@ -326,6 +327,25 @@ static unsigned decode_cb_sequence_args(struct svc_rqst *rqstp, 
	goto out;

}



static unsigned decode_recallany_args(struct svc_rqst *rqstp,

				      struct xdr_stream *xdr,

				      struct cb_recallanyargs *args)

{

	uint32_t *p;



	args->craa_addr = svc_addr(rqstp);

	p = read_buf(xdr, 4);

	if (unlikely(p == NULL))

		return htonl(NFS4ERR_BADXDR);

	args->craa_objs_to_keep = ntohl(*p++);

	p = read_buf(xdr, 4);

	if (unlikely(p == NULL))

		return htonl(NFS4ERR_BADXDR);

	args->craa_type_mask = ntohl(*p);



	return 0;

}



#endif /* CONFIG_NFS_V4_1 */



static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
@@ -533,6 +553,7 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) 
	case OP_CB_GETATTR:

	case OP_CB_RECALL:

	case OP_CB_SEQUENCE:

	case OP_CB_RECALL_ANY:

		*op = &callback_ops[op_nr];

		break;
@@ -540,7 +561,6 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) 
	case OP_CB_NOTIFY_DEVICEID:

	case OP_CB_NOTIFY:

	case OP_CB_PUSH_DELEG:

	case OP_CB_RECALL_ANY:

	case OP_CB_RECALLABLE_OBJ_AVAIL:

	case OP_CB_RECALL_SLOT:

	case OP_CB_WANTS_CANCELLED:
@@ -688,6 +708,11 @@ static struct callback_op callback_ops[] = { 
		.encode_res = (callback_encode_res_t)encode_cb_sequence_res,

		.res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ,

	},

	[OP_CB_RECALL_ANY] = {

		.process_op = (callback_process_op_t)nfs4_callback_recallany,

		.decode_args = (callback_decode_arg_t)decode_recallany_args,

		.res_maxsize = CB_OP_RECALLANY_RES_MAXSZ,

	},

#endif /* CONFIG_NFS_V4_1 */

};
@@ -718,3 +743,10 @@ struct svc_version nfs4_callback_version1 = { 
	.vs_dispatch = NULL,

};



struct svc_version nfs4_callback_version4 = {

	.vs_vers = 4,

	.vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1),

	.vs_proc = nfs4_callback_procedures1,

	.vs_xdrsize = NFS4_CALLBACK_XDRSIZE,

	.vs_dispatch = NULL,

};

fs/nfs/client.c

+12 −2
Original line number Diff line number Diff line
@@ -1260,10 +1260,20 @@ static int nfs4_set_client(struct nfs_server *server, 
static void nfs4_session_set_rwsize(struct nfs_server *server)

{

#ifdef CONFIG_NFS_V4_1

	struct nfs4_session *sess;

	u32 server_resp_sz;

	u32 server_rqst_sz;



	if (!nfs4_has_session(server->nfs_client))

		return;

	server->rsize = server->nfs_client->cl_session->fc_attrs.max_resp_sz;

	server->wsize = server->nfs_client->cl_session->fc_attrs.max_rqst_sz;

	sess = server->nfs_client->cl_session;

	server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead;

	server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead;



	if (server->rsize > server_resp_sz)

		server->rsize = server_resp_sz;

	if (server->wsize > server_rqst_sz)

		server->wsize = server_rqst_sz;

#endif /* CONFIG_NFS_V4_1 */

}