nfsd: fix laundromat next-run-time calculation

The laundromat uses two variables to calculate when it should next run,
but one is completely ignored at the end of the run. Merge the two and
rename the variable to be more descriptive of what it does.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index d0a016a502becb71e549546876220f8f35ba7626..01a0e43845007c426529066263e14b8bb2a3cb54 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3397,8 +3397,7 @@ nfs4_laundromat(struct nfsd_net *nn)
        struct nfs4_delegation *dp;
        struct list_head *pos, *next, reaplist;
        time_t cutoff = get_seconds() - nn->nfsd4_lease;
-       time_t t, clientid_val = nn->nfsd4_lease;
-       time_t u, test_val = nn->nfsd4_lease;
+       time_t t, new_timeo = nn->nfsd4_lease;
 
        nfs4_lock_state();
 
@@ -3410,8 +3409,7 @@ nfs4_laundromat(struct nfsd_net *nn)
                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;
-                       if (clientid_val > t)
-                               clientid_val = t;
+                       new_timeo = min(new_timeo, t);
                        break;
                }
                if (mark_client_expired_locked(clp)) {
@@ -3434,9 +3432,8 @@ nfs4_laundromat(struct nfsd_net *nn)
                if (net_generic(dp->dl_stid.sc_client->net, nfsd_net_id) != nn)
                        continue;
                if (time_after((unsigned long)dp->dl_time, (unsigned long)cutoff)) {
-                       u = dp->dl_time - cutoff;
-                       if (test_val > u)
-                               test_val = u;
+                       t = dp->dl_time - cutoff;
+                       new_timeo = min(new_timeo, t);
                        break;
                }
                list_move(&dp->dl_recall_lru, &reaplist);
@@ -3446,21 +3443,18 @@ nfs4_laundromat(struct nfsd_net *nn)
                dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
                revoke_delegation(dp);
        }
-       test_val = nn->nfsd4_lease;
        list_for_each_safe(pos, next, &nn->close_lru) {
                oo = container_of(pos, struct nfs4_openowner, oo_close_lru);
                if (time_after((unsigned long)oo->oo_time, (unsigned long)cutoff)) {
-                       u = oo->oo_time - cutoff;
-                       if (test_val > u)
-                               test_val = u;
+                       t = oo->oo_time - cutoff;
+                       new_timeo = min(new_timeo, t);
                        break;
                }
                release_openowner(oo);
        }
-       if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT)
-               clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT;
+       new_timeo = max_t(time_t, new_timeo, NFSD_LAUNDROMAT_MINTIMEOUT);
        nfs4_unlock_state();
-       return clientid_val;
+       return new_timeo;
 }
 
 static struct workqueue_struct *laundry_wq;