From: Shaohua Li <shaohua.li@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: aarcange@redhat.com, Hugh Dickins <hughd@google.com>,
linux-mm <linux-mm@kvack.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: [patch 2/5]thp: remove unnecessary tlb flush for mprotect
Date: Tue, 25 Oct 2011 10:59:25 +0800 [thread overview]
Message-ID: <1319511565.22361.138.camel@sli10-conroe> (raw)
change_protection() will do TLB flush later, don't need duplicate tlb flush.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
---
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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next reply other threads:[~2011-10-25 2:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-25 2:59 Shaohua Li [this message]
2011-11-10 15:23 ` [patch 2/5]thp: remove unnecessary tlb flush for mprotect Andrea Arcangeli
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