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Subject[PATCH 44/64] arch/score: use mm locking wrappers
Date
From: Davidlohr Bueso <dave@stgolabs.net>

This becomes quite straightforward with the mmrange in place.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
---
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
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