Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-omap-h63xx.git] / arch / mips / mm / fault.c

diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 7ebea331edb805802daf6aef5679691e3a22e96e..55767ad9f00ee4a5aec5be3e984d5a971b808eb9 100644 (file)
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -39,6 +39,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
        struct mm_struct *mm = tsk->mm;
        const int field = sizeof(unsigned long) * 2;
        siginfo_t info;
+       int fault;
 
 #if 0
        printk("Cpu%d[%s:%d:%0*lx:%ld:%0*lx]\n", raw_smp_processor_id(),
@@ -96,26 +97,23 @@ good_area:
                        goto bad_area;
        }
 
-survive:
        /*
         * If for any reason at all we couldn't handle the fault,
         * make sure we exit gracefully rather than endlessly redo
         * the fault.
         */
-       switch (handle_mm_fault(mm, vma, address, write)) {
-       case VM_FAULT_MINOR:
-               tsk->min_flt++;
-               break;
-       case VM_FAULT_MAJOR:
-               tsk->maj_flt++;
-               break;
-       case VM_FAULT_SIGBUS:
-               goto do_sigbus;
-       case VM_FAULT_OOM:
-               goto out_of_memory;
-       default:
+       fault = handle_mm_fault(mm, vma, address, write);
+       if (unlikely(fault & VM_FAULT_ERROR)) {
+               if (fault & VM_FAULT_OOM)
+                       goto out_of_memory;
+               else if (fault & VM_FAULT_SIGBUS)
+                       goto do_sigbus;
                BUG();
        }
+       if (fault & VM_FAULT_MAJOR)
+               tsk->maj_flt++;
+       else
+               tsk->min_flt++;
 
        up_read(&mm->mmap_sem);
        return;
@@ -168,21 +166,13 @@ no_context:
               field,  regs->regs[31]);
        die("Oops", regs);
 
-/*
- * 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:
-       up_read(&mm->mmap_sem);
-       if (is_init(tsk)) {
-               yield();
-               down_read(&mm->mmap_sem);
-               goto survive;
-       }
-       printk("VM: killing process %s\n", tsk->comm);
-       if (user_mode(regs))
-               do_exit(SIGKILL);
-       goto no_context;
+       /*
+        * 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).
+        */
+       pagefault_out_of_memory();
+       return;
 
 do_sigbus:
        up_read(&mm->mmap_sem);