nfsd4: use local variable in nfs4svc_encode_compoundres

[safe/jmp/linux-2.6] / mm / memcontrol.c

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 488b644..d813823 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2545,7 +2545,7 @@ static int mem_cgroup_force_empty_list(struct mem_cgroup *mem,
                pc = list_entry(list->prev, struct page_cgroup, lru);
                if (busy == pc) {
                        list_move(&pc->lru, list);
-                       busy = 0;
+                       busy = NULL;
                        spin_unlock_irqrestore(&zone->lru_lock, flags);
                        continue;
                }
@@ -2586,7 +2586,7 @@ static int mem_cgroup_force_empty(struct mem_cgroup *mem, bool free_all)
        if (free_all)
                goto try_to_free;
 move_account:
-       while (mem->res.usage > 0) {
+       do {
                ret = -EBUSY;
                if (cgroup_task_count(cgrp) || !list_empty(&cgrp->children))
                        goto out;
@@ -2614,8 +2614,8 @@ move_account:
                if (ret == -ENOMEM)
                        goto try_to_free;
                cond_resched();
-       }
-       ret = 0;
+       /* "ret" should also be checked to ensure all lists are empty. */
+       } while (mem->res.usage > 0 || ret);
 out:
        css_put(&mem->css);
        return ret;
@@ -2648,10 +2648,7 @@ try_to_free:
        }
        lru_add_drain();
        /* try move_account...there may be some *locked* pages. */
-       if (mem->res.usage)
-               goto move_account;
-       ret = 0;
-       goto out;
+       goto move_account;
 }
 
 int mem_cgroup_force_empty_write(struct cgroup *cont, unsigned int event)