[patch 2/5]thp: remove unnecessary tlb flush for mprotect
From: Shaohua Li
Date: Mon Oct 24 2011 - 22:51:50 EST
change_protection() will do TLB flush later, don't need duplicate tlb flush.
Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx>
---
mm/huge_memory.c | 1 -
1 file changed, 1 deletion(-)
Index: linux/mm/huge_memory.c
===================================================================
--- linux.orig/mm/huge_memory.c 2011-10-24 19:24:31.000000000 +0800
+++ linux/mm/huge_memory.c 2011-10-24 19:25:10.000000000 +0800
@@ -1079,7 +1079,6 @@ 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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