From: Davidlohr Bueso <dave@xxxxxxxxxxxx>
This becomes quite straightforward with the mmrange in place.
Signed-off-by: Davidlohr Bueso <dbueso@xxxxxxx>
---
arch/metag/mm/fault.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/metag/mm/fault.c b/arch/metag/mm/fault.c
index e16ba0ea7ea1..47ab10069fde 100644
--- a/arch/metag/mm/fault.c
+++ b/arch/metag/mm/fault.c
@@ -114,7 +114,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
if (user_mode(regs))
flags |= FAULT_FLAG_USER;
retry:
- down_read(&mm->mmap_sem);
+ mm_read_lock(mm, &mmrange);
vma = find_vma_prev(mm, address, &prev_vma);
@@ -169,7 +169,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
}
}
- up_read(&mm->mmap_sem);
+ mm_read_unlock(mm, &mmrange);
return 0;
check_expansion:
@@ -178,7 +178,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
goto good_area;
bad_area:
- up_read(&mm->mmap_sem);
+ mm_read_unlock(mm, &mmrange);
bad_area_nosemaphore:
if (user_mode(regs)) {
@@ -206,7 +206,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
goto no_context;
do_sigbus:
- up_read(&mm->mmap_sem);
+ mm_read_unlock(mm, &mmrange);
/*
* Send a sigbus, regardless of whether we were in kernel
@@ -230,7 +230,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
* 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)) {
pagefault_out_of_memory();
return 1;
--
2.13.6
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