| From | Davidlohr Bueso <> | Subject | [PATCH 42/64] arch/frv: use mm locking wrappers | Date | Mon, 5 Feb 2018 02:27:32 +0100 |
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From: Davidlohr Bueso <dave@stgolabs.net>
This becomes quite straightforward with the mmrange in place.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de> --- arch/frv/mm/fault.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/frv/mm/fault.c b/arch/frv/mm/fault.c index 494d33b628fc..a5da0586e6cc 100644 --- a/arch/frv/mm/fault.c +++ b/arch/frv/mm/fault.c @@ -86,7 +86,7 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear if (user_mode(__frame)) flags |= FAULT_FLAG_USER; - down_read(&mm->mmap_sem); + mm_read_lock(mm, &mmrange); vma = find_vma(mm, ear0); if (!vma) @@ -181,7 +181,7 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear else current->min_flt++; - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); return; /* @@ -189,7 +189,7 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear * Fix it, but check if it's kernel or user first.. */ bad_area: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); /* User mode accesses just cause a SIGSEGV */ if (user_mode(__frame)) { @@ -259,14 +259,14 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear * us unable to handle the page fault gracefully. */ out_of_memory: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); if (!user_mode(__frame)) goto no_context; pagefault_out_of_memory(); return; do_sigbus: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); /* * Send a sigbus, regardless of whether we were in kernel -- 2.13.6
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