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Diffstat (limited to 'arch/s390/mm/fault.c')
-rw-r--r--arch/s390/mm/fault.c28
1 files changed, 2 insertions, 26 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 4d537205e83c..833e8366c351 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -200,29 +200,6 @@ static void do_low_address(struct pt_regs *regs, unsigned long error_code)
200 do_no_context(regs, error_code, 0); 200 do_no_context(regs, error_code, 0);
201} 201}
202 202
203/*
204 * We ran out of memory, or some other thing happened to us that made
205 * us unable to handle the page fault gracefully.
206 */
207static int do_out_of_memory(struct pt_regs *regs, unsigned long error_code,
208 unsigned long address)
209{
210 struct task_struct *tsk = current;
211 struct mm_struct *mm = tsk->mm;
212
213 up_read(&mm->mmap_sem);
214 if (is_global_init(tsk)) {
215 yield();
216 down_read(&mm->mmap_sem);
217 return 1;
218 }
219 printk("VM: killing process %s\n", tsk->comm);
220 if (regs->psw.mask & PSW_MASK_PSTATE)
221 do_group_exit(SIGKILL);
222 do_no_context(regs, error_code, address);
223 return 0;
224}
225
226static void do_sigbus(struct pt_regs *regs, unsigned long error_code, 203static void do_sigbus(struct pt_regs *regs, unsigned long error_code,
227 unsigned long address) 204 unsigned long address)
228{ 205{
@@ -367,7 +344,6 @@ good_area:
367 goto bad_area; 344 goto bad_area;
368 } 345 }
369 346
370survive:
371 if (is_vm_hugetlb_page(vma)) 347 if (is_vm_hugetlb_page(vma))
372 address &= HPAGE_MASK; 348 address &= HPAGE_MASK;
373 /* 349 /*
@@ -378,8 +354,8 @@ survive:
378 fault = handle_mm_fault(mm, vma, address, write); 354 fault = handle_mm_fault(mm, vma, address, write);
379 if (unlikely(fault & VM_FAULT_ERROR)) { 355 if (unlikely(fault & VM_FAULT_ERROR)) {
380 if (fault & VM_FAULT_OOM) { 356 if (fault & VM_FAULT_OOM) {
381 if (do_out_of_memory(regs, error_code, address)) 357 up_read(&mm->mmap_sem);
382 goto survive; 358 pagefault_out_of_memory();
383 return; 359 return;
384 } else if (fault & VM_FAULT_SIGBUS) { 360 } else if (fault & VM_FAULT_SIGBUS) {
385 do_sigbus(regs, error_code, address); 361 do_sigbus(regs, error_code, address);