Commit e5591307 authored Jan 12, 2012 by Shaohua Li Committed by Linus Torvalds Jan 12, 2012

thp: remove unnecessary tlb flush for mprotect



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>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 569e5590

mm/huge_memory.c

+0 −1

Original line number	Original line	Diff line number	Diff line
	@@ -1145,7 +1145,6 @@ int change_huge_pmd(struct vm_area_struct vma, pmd_t pmd,
	entry = pmd_modify(entry, newprot);		entry = pmd_modify(entry, newprot);
	set_pmd_at(mm, addr, pmd, entry);		set_pmd_at(mm, addr, pmd, entry);
	spin_unlock(&vma->vm_mm->page_table_lock);		spin_unlock(&vma->vm_mm->page_table_lock);
	flush_tlb_range(vma, addr, addr + HPAGE_PMD_SIZE);
	ret = 1;		ret = 1;
	}		}
	} else		} else