Messages in this thread Patch in this message | | | From | Davidlohr Bueso <> | Subject | [PATCH 49/64] arch/xtensa: use mm locking wrappers | Date | Mon, 5 Feb 2018 02:27:39 +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/xtensa/mm/fault.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/xtensa/mm/fault.c b/arch/xtensa/mm/fault.c index 6f8e3e7cccb5..5e783e5583b6 100644 --- a/arch/xtensa/mm/fault.c +++ b/arch/xtensa/mm/fault.c @@ -75,7 +75,7 @@ void do_page_fault(struct pt_regs *regs) if (user_mode(regs)) flags |= FAULT_FLAG_USER; retry: - down_read(&mm->mmap_sem); + mm_read_lock(mm, &mmrange); vma = find_vma(mm, address); if (!vma) @@ -141,7 +141,7 @@ void do_page_fault(struct pt_regs *regs) } } - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); if (flags & VM_FAULT_MAJOR) perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address); @@ -154,7 +154,7 @@ void do_page_fault(struct pt_regs *regs) * Fix it, but check if it's kernel or user first.. */ bad_area: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); if (user_mode(regs)) { current->thread.bad_vaddr = address; current->thread.error_code = is_write; @@ -173,7 +173,7 @@ void do_page_fault(struct pt_regs *regs) * 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)) bad_page_fault(regs, address, SIGKILL); else @@ -181,7 +181,7 @@ void do_page_fault(struct pt_regs *regs) return; do_sigbus: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); /* Send a sigbus, regardless of whether we were in kernel * or user mode. -- 2.13.6
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