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microblaze: invoke oom-killer from page fault 

As explained in commit 1c0fe6e3bd, we want to call the architecture independent
oom killer when getting an unexplained OOM from handle_mm_fault, rather than
simply killing current.

Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Michal Simek <monstr@monstr.eu>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Nick Piggin 2010-04-23 02:06:21 +10:00 committed by Michal Simek
parent f3ff8212a2
commit 21e1c93631
1 changed files with 4 additions and 9 deletions
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13
arch/microblaze/mm/fault.c
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@ -273,16 +273,11 @@ bad_area_nosemaphore:
* us unable to handle the page fault gracefully.
*/
out_of_memory:
if (current->pid == 1) {
yield();
down_read(&mm->mmap_sem);
goto survive;
}
up_read(&mm->mmap_sem);
printk(KERN_WARNING "VM: killing process %s\n", current->comm);
if (user_mode(regs))
do_exit(SIGKILL);
bad_page_fault(regs, address, SIGKILL);
if (!user_mode(regs))
bad_page_fault(regs, address, SIGKILL);
else
pagefault_out_of_memory();
return;
do_sigbus: