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NFSv4.1: new flag for lease time check 

Data servers cannot send nfs4_proc_get_lease_time. but still need to setup
state renewal. Add the NFS_CS_CHECK_LEASE_TIME bit to indicate if the lease
time can be checked.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Andy Adamson 2011-03-01 01:34:11 +00:00 committed by Trond Myklebust
parent d3b4c9d767
commit d6fb79d433
3 changed files with 15 additions and 0 deletions
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9
fs/nfs/client.c
View File

@ -1400,6 +1400,15 @@ static int nfs4_set_client(struct nfs_server *server,
goto error;
}
/*
* Query for the lease time on clientid setup or renewal
*
* Note that this will be set on nfs_clients that were created
* only for the DS role and did not set this bit, but now will
* serve a dual role.
*/
set_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state);
server->nfs_client = clp;
dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp);
return 0;

5
fs/nfs/nfs4state.c
View File

@ -153,6 +153,11 @@ static int nfs41_setup_state_renewal(struct nfs_client *clp)
int status;
struct nfs_fsinfo fsinfo;
if (!test_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state)) {
nfs4_schedule_state_renewal(clp);
return 0;
}
status = nfs4_proc_get_lease_time(clp, &fsinfo);
if (status == 0) {
/* Update lease time and schedule renewal */

1
include/linux/nfs_fs_sb.h
View File

@ -31,6 +31,7 @@ struct nfs_client {
#define NFS_CS_IDMAP 2 /* - idmap started */
#define NFS_CS_RENEWD 3 /* - renewd started */
#define NFS_CS_STOP_RENEW 4 /* no more state to renew */
#define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */
struct sockaddr_storage cl_addr; /* server identifier */
size_t cl_addrlen;
char * cl_hostname; /* hostname of server */