From: j.glisse@gmail.com
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, Jerome Glisse <jglisse@redhat.com>
Subject: [PATCH 1/3] mm: honor FOLL_GET flag in follow_hugetlb_page
Date: Tue, 7 May 2013 16:45:54 -0400 [thread overview]
Message-ID: <1367959554-3218-1-git-send-email-j.glisse@gmail.com> (raw)
From: Jerome Glisse <jglisse@redhat.com>
Do not increase page count if FOLL_GET is not set.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
---
mm/hugetlb.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 1a12f5b..5d1e46b 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2991,7 +2991,9 @@ long follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
same_page:
if (pages) {
pages[i] = mem_map_offset(page, pfn_offset);
- get_page(pages[i]);
+ if (flags & FOLL_GET) {
+ get_page_foll(pages[i]);
+ }
}
if (vmas)
--
1.8.2.1
--
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next reply other threads:[~2013-05-07 20:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-07 20:45 j.glisse [this message]
2013-05-07 21:53 ` Naoya Horiguchi
2013-05-07 22:28 ` Jerome Glisse
2013-05-07 23:00 ` Naoya Horiguchi
2013-05-07 23:07 ` Jerome Glisse
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