* [patch v2 2/4]thp: remove unnecessary tlb flush for mprotect
@ 2011-11-15 7:04 Shaohua Li
2011-11-15 18:17 ` Andrea Arcangeli
0 siblings, 1 reply; 2+ messages in thread
From: Shaohua Li @ 2011-11-15 7:04 UTC (permalink / raw)
To: Andrew Morton; +Cc: Andrea Arcangeli, linux-mm
change_protection() will do TLB flush later, don't need duplicate tlb flush.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
---
mm/huge_memory.c | 1 -
1 file changed, 1 deletion(-)
Index: linux/mm/huge_memory.c
===================================================================
--- linux.orig/mm/huge_memory.c 2011-11-14 16:14:08.000000000 +0800
+++ linux/mm/huge_memory.c 2011-11-14 16:14:33.000000000 +0800
@@ -1145,7 +1145,6 @@ int change_huge_pmd(struct vm_area_struc
entry = pmd_modify(entry, newprot);
set_pmd_at(mm, addr, pmd, entry);
spin_unlock(&vma->vm_mm->page_table_lock);
- flush_tlb_range(vma, addr, addr + HPAGE_PMD_SIZE);
ret = 1;
}
} else
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* Re: [patch v2 2/4]thp: remove unnecessary tlb flush for mprotect
2011-11-15 7:04 [patch v2 2/4]thp: remove unnecessary tlb flush for mprotect Shaohua Li
@ 2011-11-15 18:17 ` Andrea Arcangeli
0 siblings, 0 replies; 2+ messages in thread
From: Andrea Arcangeli @ 2011-11-15 18:17 UTC (permalink / raw)
To: Shaohua Li; +Cc: Andrew Morton, linux-mm
On Tue, Nov 15, 2011 at 03:04:13PM +0800, Shaohua Li wrote:
> change_protection() will do TLB flush later, don't need duplicate tlb flush.
>
> Signed-off-by: Shaohua Li <shaohua.li@intel.com>
> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
> ---
confirm the above.
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