linux-kernel - [PATCH 3/7] pin

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Message-Id: <20070219183155.27318.17766.stgit@localhost.localdomain>
Date:	Mon, 19 Feb 2007 10:31:55 -0800
From:	Adam Litke <agl@...ibm.com>
To:	linux-mm@...ck.org
Cc:	linux-kernel@...r.kernel.org, agl@...ibm.com
Subject: [PATCH 3/7] pin_pages for hugetlb


Signed-off-by: Adam Litke <agl@...ibm.com>
---

 fs/hugetlbfs/inode.c |    1 +
 mm/memory.c          |    6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index c0a7984..2d1dd84 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -564,6 +564,7 @@ const struct file_operations hugetlbfs_file_operations = {
 
 static struct pagetable_operations_struct hugetlbfs_pagetable_ops = {
 	.copy_vma		= copy_hugetlb_page_range,
+	.pin_pages		= follow_hugetlb_page,
 };
 
 static struct inode_operations hugetlbfs_dir_inode_operations = {
diff --git a/mm/memory.c b/mm/memory.c
index 80eafd5..9467c65 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1039,9 +1039,9 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
 				|| !(vm_flags & vma->vm_flags))
 			return i ? : -EFAULT;
 
-		if (is_vm_hugetlb_page(vma)) {
-			i = follow_hugetlb_page(mm, vma, pages, vmas,
-						&start, &len, i);
+		if (has_pt_op(vma, pin_pages)) {
+			i = pt_op(vma, pin_pages)(mm, vma, pages,
+						vmas, &start, &len, i);
 			continue;
 		}
 
-
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