diff options
| -rw-r--r-- | arch/sh/mm/fault.c | 25 |
1 files changed, 7 insertions, 18 deletions
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c index c56a5fabcd0f..60d74f793a1d 100644 --- a/arch/sh/mm/fault.c +++ b/arch/sh/mm/fault.c @@ -258,9 +258,6 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs, pmd_t *pmd; pte_t *pte; pte_t entry; - struct mm_struct *mm = current->mm; - spinlock_t *ptl = NULL; - int ret = 1; #ifdef CONFIG_SH_KGDB if (kgdb_nofault && kgdb_bus_err_hook) @@ -274,12 +271,11 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs, */ if (address >= P3SEG && address < P3_ADDR_MAX) { pgd = pgd_offset_k(address); - mm = NULL; } else { - if (unlikely(address >= TASK_SIZE || !mm)) + if (unlikely(address >= TASK_SIZE || !current->mm)) return 1; - pgd = pgd_offset(mm, address); + pgd = pgd_offset(current->mm, address); } pud = pud_offset(pgd, address); @@ -289,16 +285,12 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs, if (pmd_none_or_clear_bad(pmd)) return 1; - if (mm) - pte = pte_offset_map_lock(mm, pmd, address, &ptl); - else - pte = pte_offset_kernel(pmd, address); - + pte = pte_offset_kernel(pmd, address); entry = *pte; if (unlikely(pte_none(entry) || pte_not_present(entry))) - goto unlock; + return 1; if (unlikely(writeaccess && !pte_write(entry))) - goto unlock; + return 1; if (writeaccess) entry = pte_mkdirty(entry); @@ -306,9 +298,6 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs, set_pte(pte, entry); update_mmu_cache(NULL, address, entry); - ret = 0; -unlock: - if (mm) - pte_unmap_unlock(pte, ptl); - return ret; + + return 0; } |