From: Paul Mundt Date: Wed, 27 Sep 2006 06:30:24 +0000 (+0900) Subject: sh: Fix split ptlock for user mappings in __do_page_fault(). X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f647d33f879d258de4ab2559975bd6eebda2033e;p=linux-beck.git sh: Fix split ptlock for user mappings in __do_page_fault(). There was a bug that got introduced when the split ptlock changes went in where mm could be unintialized for user mappings, this fixes it up.. Signed-off-by: Paul Mundt --- diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c index 7a03ffe6dadd..dc461d2bc183 100644 --- a/arch/sh/mm/fault.c +++ b/arch/sh/mm/fault.c @@ -210,10 +210,11 @@ asmlinkage int __do_page_fault(struct pt_regs *regs, unsigned long writeaccess, * are always mapped, whether it be due to legacy behaviour in * 29-bit mode, or due to PMB configuration in 32-bit mode. */ - if (address >= P3SEG && address < P3_ADDR_MAX) + if (address >= P3SEG && address < P3_ADDR_MAX) { pgd = pgd_offset_k(address); - else { - if (unlikely(address >= TASK_SIZE || !current->mm)) + mm = NULL; + } else { + if (unlikely(address >= TASK_SIZE || !(mm = current->mm))) return 1; pgd = pgd_offset(current->mm, address);