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nfsd: make client_lru list per net 

This list holds nfs4 clients queue for lease renewal, which are network
namespace aware. So let's make this list per network namespace too.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Stanislav Kinsbursky 2012-11-14 18:21:56 +03:00 committed by J. Bruce Fields
parent 1872de0e81
commit 5ed58bb243
2 changed files with 13 additions and 8 deletions
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5
fs/nfsd/netns.h
View File

@ -68,6 +68,11 @@ struct nfsd_net {
struct list_head *ownerstr_hashtbl;
struct list_head *lockowner_ino_hashtbl;
struct list_head *sessionid_hashtbl;
/*
* client_lru holds client queue ordered by nfs4_client.cl_time
* for lease renewal.
*/
struct list_head client_lru;
};
extern int nfsd_net_id;

16
fs/nfsd/nfs4state.c
View File

@ -402,15 +402,11 @@ static unsigned int clientstr_hashval(const char *name)
}
/*
* client_lru holds client queue ordered by nfs4_client.cl_time
* for lease renewal.
*
* close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time
* for last close replay.
*
* All of the above fields are protected by the client_mutex.
*/
static struct list_head client_lru;
static struct list_head close_lru;
/*
@ -995,6 +991,8 @@ unhash_session(struct nfsd4_session *ses)
static inline void
renew_client_locked(struct nfs4_client *clp)
{
struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id);
if (is_client_expired(clp)) {
WARN_ON(1);
printk("%s: client (clientid %08x/%08x) already expired\n",
@ -1007,7 +1005,7 @@ renew_client_locked(struct nfs4_client *clp)
dprintk("renewing client (clientid %08x/%08x)\n",
clp->cl_clientid.cl_boot,
clp->cl_clientid.cl_id);
list_move_tail(&clp->cl_lru, &client_lru);
list_move_tail(&clp->cl_lru, &nn->client_lru);
clp->cl_time = get_seconds();
}
@ -3196,6 +3194,7 @@ nfs4_laundromat(void)
time_t cutoff = get_seconds() - nfsd4_lease;
time_t t, clientid_val = nfsd4_lease;
time_t u, test_val = nfsd4_lease;
struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
nfs4_lock_state();
@ -3203,7 +3202,7 @@ nfs4_laundromat(void)
nfsd4_end_grace(&init_net);
INIT_LIST_HEAD(&reaplist);
spin_lock(&client_lock);
list_for_each_safe(pos, next, &client_lru) {
list_for_each_safe(pos, next, &nn->client_lru) {
clp = list_entry(pos, struct nfs4_client, cl_lru);
if (time_after((unsigned long)clp->cl_time, (unsigned long)cutoff)) {
t = clp->cl_time - cutoff;
@ -4590,9 +4589,10 @@ void nfsd_forget_clients(u64 num)
{
struct nfs4_client *clp, *next;
int count = 0;
struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
nfs4_lock_state();
list_for_each_entry_safe(clp, next, &client_lru, cl_lru) {
list_for_each_entry_safe(clp, next, &nn->client_lru, cl_lru) {
expire_client(clp);
if (++count == num)
break;
@ -4722,7 +4722,6 @@ nfs4_state_init(void)
INIT_LIST_HEAD(&file_hashtbl[i]);
}
INIT_LIST_HEAD(&close_lru);
INIT_LIST_HEAD(&client_lru);
INIT_LIST_HEAD(&del_recall_lru);
}
@ -4785,6 +4784,7 @@ static int nfs4_state_start_net(struct net *net)
INIT_LIST_HEAD(&nn->sessionid_hashtbl[i]);
nn->conf_name_tree = RB_ROOT;
nn->unconf_name_tree = RB_ROOT;
INIT_LIST_HEAD(&nn->client_lru);
return 0;