[patch 3/5] x86: finish fault error path with fatal signal

[Johannes Weiner <hannes@xxxxxxxxxxx>]

The x86 fault handler bails in the middle of error handling when the
task has been killed.  For the next patch this is a problem, because
it relies on pagefault_out_of_memory() being called even when the task
has been killed, to perform proper OOM state unwinding.

This is a rather minor optimization, just remove it.

Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
---
 arch/x86/mm/fault.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 1cebabe..90248c9 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -846,17 +846,6 @@ static noinline int
 mm_fault_error(struct pt_regs *regs, unsigned long error_code,
 	       unsigned long address, unsigned int fault)
 {
-	/*
-	 * Pagefault was interrupted by SIGKILL. We have no reason to
-	 * continue pagefault.
-	 */
-	if (fatal_signal_pending(current)) {
-		if (!(fault & VM_FAULT_RETRY))
-			up_read(&current->mm->mmap_sem);
-		if (!(error_code & PF_USER))
-			no_context(regs, error_code, address);
-		return 1;
-	}
 	if (!(fault & VM_FAULT_ERROR))
 		return 0;
 
-- 
1.8.3.2

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>