nfsd: make laundromat network namespace aware

This patch moves laundromat_work to nfsd per-net context, thus allowing to run
multiple laundries.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 13 insertions, 8 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2e4ed691255a..e75872f81e1c 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3176,7 +3176,7 @@ nfsd4_end_grace(struct nfsd_net *nn)
 }
 
 static time_t
-nfs4_laundromat(void)
+nfs4_laundromat(struct nfsd_net *nn)
 {
         struct nfs4_client *clp;
         struct nfs4_openowner *oo;
@@ -3185,7 +3185,6 @@ 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();
 
@@ -3251,16 +3250,19 @@ nfs4_laundromat(void)
 
 static struct workqueue_struct *laundry_wq;
 static void laundromat_main(struct work_struct *);
-static DECLARE_DELAYED_WORK(laundromat_work, laundromat_main);
 
 static void
-laundromat_main(struct work_struct *not_used)
+laundromat_main(struct work_struct *laundry)
 {
         time_t t;
+        struct delayed_work *dwork = container_of(laundry, struct delayed_work,
+                                                  work);
+        struct nfsd_net *nn = container_of(dwork, struct nfsd_net,
+                                           laundromat_work);
 
-        t = nfs4_laundromat();
+        t = nfs4_laundromat(nn);
         dprintk("NFSD: laundromat_main - sleeping for %ld seconds\n", t);
-        queue_delayed_work(laundry_wq, &laundromat_work, t*HZ);
+        queue_delayed_work(laundry_wq, &nn->laundromat_work, t*HZ);
 }
 
 static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp)
@@ -4791,6 +4793,8 @@ static int nfs4_state_start_net(struct net *net)
         INIT_LIST_HEAD(&nn->client_lru);
         INIT_LIST_HEAD(&nn->close_lru);
 
+        INIT_DELAYED_WORK(&nn->laundromat_work, laundromat_main);
+
         return 0;
 
 err_sessionid:
@@ -4875,7 +4879,8 @@ nfs4_state_start(void)
         ret = nfsd4_create_callback_queue();
         if (ret)
                 goto out_free_laundry;
-        queue_delayed_work(laundry_wq, &laundromat_work, nfsd4_grace * HZ);
+
+        queue_delayed_work(laundry_wq, &nn->laundromat_work, nfsd4_grace * HZ);
         set_max_delegations();
         return 0;
 out_free_laundry:
@@ -4918,7 +4923,7 @@ nfs4_state_shutdown(void)
         struct net *net = &init_net;
         struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 
-        cancel_delayed_work_sync(&laundromat_work);
+        cancel_delayed_work_sync(&nn->laundromat_work);
         destroy_workqueue(laundry_wq);
         locks_end_grace(&nn->nfsd4_manager);
         nfs4_lock_state();