mm: invoke oom-killer from page fault

[pandora-kernel.git] / arch / um / kernel / trap.c

diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c
index 44e4904..7384d8a 100644 (file)
--- a/arch/um/kernel/trap.c
+++ b/arch/um/kernel/trap.c
@@ -64,11 +64,10 @@ good_area:
 
        do {
                int fault;
-survive:
+
                fault = handle_mm_fault(mm, vma, address, is_write);
                if (unlikely(fault & VM_FAULT_ERROR)) {
                        if (fault & VM_FAULT_OOM) {
-                               err = -ENOMEM;
                                goto out_of_memory;
                        } else if (fault & VM_FAULT_SIGBUS) {
                                err = -EACCES;
@@ -104,18 +103,14 @@ out:
 out_nosemaphore:
        return err;
 
-/*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
 out_of_memory:
-       if (is_global_init(current)) {
-               up_read(&mm->mmap_sem);
-               yield();
-               down_read(&mm->mmap_sem);
-               goto survive;
-       }
-       goto out;
+       /*
+        * We ran out of memory, call the OOM killer, and return the userspace
+        * (which will retry the fault, or kill us if we got oom-killed).
+        */
+       up_read(&mm->mmap_sem);
+       pagefault_out_of_memory();
+       return 0;
 }
 
 static void bad_segv(struct faultinfo fi, unsigned long ip)
@@ -214,9 +209,6 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user,
                si.si_addr = (void __user *)address;
                current->thread.arch.faultinfo = fi;
                force_sig_info(SIGBUS, &si, current);
-       } else if (err == -ENOMEM) {
-               printk(KERN_INFO "VM: killing process %s\n", current->comm);
-               do_exit(SIGKILL);
        } else {
                BUG_ON(err != -EFAULT);
                si.si_signo = SIGSEGV;