CRIS: Don't take faults while in_atomic (028c1f68) · Commits · 戴 / test

arch/cris/mm/fault.c

+5 −8

Original line number	Original line	Diff line number	Diff line
	/*		/*
	* linux/arch/cris/mm/fault.c		* arch/cris/mm/fault.c
	*
	* Copyright (C) 2000-2006 Axis Communications AB
	*
	* Authors: Bjorn Wesen
	*		*
			* Copyright (C) 2000-2010 Axis Communications AB
	*/		*/

	#include <linux/mm.h>		#include <linux/mm.h>
	@@ -108,11 +105,11 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
	info.si_code = SEGV_MAPERR;		info.si_code = SEGV_MAPERR;

	/*		/*
	* If we're in an interrupt or have no user		* If we're in an interrupt or "atomic" operation or have no
	* context, we must not take the fault..		* user context, we must not take the fault.
	*/		*/

	if (in_interrupt() \|\| !mm)		if (in_atomic() \|\| !mm)
	goto no_context;		goto no_context;

	down_read(&mm->mmap_sem);		down_read(&mm->mmap_sem);