i386 mmzone: use __maybe_unused

[powerpc.git] / mm / oom_kill.c

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index a35e7a8..a700141 100644 (file)
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -399,6 +399,7 @@ void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order)
        struct task_struct *p;
        unsigned long points = 0;
        unsigned long freed = 0;
+       int constraint;
 
        blocking_notifier_call_chain(&oom_notify_list, 0, &freed);
        if (freed > 0)
@@ -413,14 +414,18 @@ void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order)
                show_mem();
        }
 
-       cpuset_lock();
-       read_lock(&tasklist_lock);
+       if (sysctl_panic_on_oom == 2)
+               panic("out of memory. Compulsory panic_on_oom is selected.\n");
 
        /*
         * Check if there were limitations on the allocation (only relevant for
         * NUMA) that may require different handling.
         */
-       switch (constrained_alloc(zonelist, gfp_mask)) {
+       constraint = constrained_alloc(zonelist, gfp_mask);
+       cpuset_lock();
+       read_lock(&tasklist_lock);
+
+       switch (constraint) {
        case CONSTRAINT_MEMORY_POLICY:
                oom_kill_process(current, points,
                                "No available memory (MPOL_BIND)");