From 83c54070ee1a2d05c89793884bea1a03f2851ed4 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Thu, 19 Jul 2007 01:47:05 -0700 Subject: mm: fault feedback #2 This patch completes Linus's wish that the fault return codes be made into bit flags, which I agree makes everything nicer. This requires requires all handle_mm_fault callers to be modified (possibly the modifications should go further and do things like fault accounting in handle_mm_fault -- however that would be for another patch). [akpm@linux-foundation.org: fix alpha build] [akpm@linux-foundation.org: fix s390 build] [akpm@linux-foundation.org: fix sparc build] [akpm@linux-foundation.org: fix sparc64 build] [akpm@linux-foundation.org: fix ia64 build] Signed-off-by: Nick Piggin Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Russell King Cc: Ian Molton Cc: Bryan Wu Cc: Mikael Starvik Cc: David Howells Cc: Yoshinori Sato Cc: "Luck, Tony" Cc: Hirokazu Takata Cc: Geert Uytterhoeven Cc: Roman Zippel Cc: Greg Ungerer Cc: Matthew Wilcox Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Paul Mundt Cc: Kazumoto Kojima Cc: Richard Curnow Cc: William Lee Irwin III Cc: "David S. Miller" Cc: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Cc: Miles Bader Cc: Chris Zankel Acked-by: Kyle McMartin Acked-by: Haavard Skinnemoen Acked-by: Ralf Baechle Acked-by: Andi Kleen Signed-off-by: Andrew Morton [ Still apparently needs some ARM and PPC loving - Linus ] Signed-off-by: Linus Torvalds --- arch/sh/mm/fault.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) (limited to 'arch/sh/mm') diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c index 0b3eaf6fbb2..964c6767dc7 100644 --- a/arch/sh/mm/fault.c +++ b/arch/sh/mm/fault.c @@ -33,6 +33,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, struct mm_struct *mm; struct vm_area_struct * vma; int si_code; + int fault; siginfo_t info; trace_hardirqs_on(); @@ -124,20 +125,18 @@ good_area: * the fault. */ survive: - switch (handle_mm_fault(mm, vma, address, writeaccess)) { - 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: + fault = handle_mm_fault(mm, vma, address, writeaccess); + if (unlikely(fault & VM_FAULT_ERROR)) { + if (fault & VM_FAULT_OOM) goto out_of_memory; - default: - BUG(); + 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; -- cgit v1.2.3