From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Date: Wed, 11 Sep 2013 21:21:55 +0000 (-0700)
Subject: mm, hugetlb: remove useless check about mapping type
X-Git-Tag: v3.12-rc1~52^2~213
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5944d0116c773319a48ea6812d1891aa6d0bbbbf;p=profile%2Fivi%2Fkernel-x86-ivi.git

mm, hugetlb: remove useless check about mapping type

is_vma_resv_set(vma, HPAGE_RESV_OWNER) implys that this mapping is for
private.  So we don't need to check whether this mapping is for shared or
not.

This patch is just for clean-up.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index dec5772..f6347ec 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2564,8 +2564,7 @@ retry_avoidcopy:
 	 * at the time of fork() could consume its reserves on COW instead
 	 * of the full address range.
 	 */
-	if (!(vma->vm_flags & VM_MAYSHARE) &&
-			is_vma_resv_set(vma, HPAGE_RESV_OWNER) &&
+	if (is_vma_resv_set(vma, HPAGE_RESV_OWNER) &&
 			old_page != pagecache_page)
 		outside_reserve = 1;