From: Davidlohr Bueso <dave@xxxxxxxxxxxx> This becomes quite straightforward with the mmrange in place. Signed-off-by: Davidlohr Bueso <dbueso@xxxxxxx> --- arch/score/mm/fault.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c index 07a8637ad142..535df3b377a5 100644 --- a/arch/score/mm/fault.c +++ b/arch/score/mm/fault.c @@ -81,7 +81,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, if (user_mode(regs)) flags |= FAULT_FLAG_USER; - down_read(&mm->mmap_sem); + mm_read_lock(mm, &mmrange); vma = find_vma(mm, address); if (!vma) goto bad_area; @@ -127,7 +127,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, else tsk->min_flt++; - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); return; /* @@ -135,7 +135,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, * Fix it, but check if it's kernel or user first.. */ bad_area: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); bad_area_nosemaphore: /* User mode accesses just cause a SIGSEGV */ @@ -174,14 +174,14 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, * us unable to handle the page fault gracefully. */ out_of_memory: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); if (!user_mode(regs)) goto no_context; pagefault_out_of_memory(); return; do_sigbus: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); /* Kernel mode? Handle exceptions or die */ if (!user_mode(regs)) goto no_context; -- 2.13.6 -- 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>
