linux-kernel - [PATCH 6/8] block_dev: Support PUD DAX mappings

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Date:	Thu, 24 Dec 2015 11:20:35 -0500
From:	Matthew Wilcox <matthew.r.wilcox@...el.com>
To:	unlisted-recipients:; (no To-header on input)
Cc:	Matthew Wilcox <willy@...ux.intel.com>, linux-mm@...ck.org,
	linux-nvdimm@...ts.01.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: [PATCH 6/8] block_dev: Support PUD DAX mappings

From: Matthew Wilcox <willy@...ux.intel.com>

Signed-off-by: Matthew Wilcox <willy@...ux.intel.com>
---
 fs/block_dev.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 2d9137e..ed73fdf 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1739,6 +1739,12 @@ static int blkdev_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr,
 	return __dax_pmd_fault(vma, addr, pmd, flags, blkdev_get_block, NULL);
 }
 
+static int blkdev_dax_pud_fault(struct vm_area_struct *vma, unsigned long addr,
+		pud_t *pud, unsigned int flags)
+{
+	return __dax_pud_fault(vma, addr, pud, flags, blkdev_get_block, NULL);
+}
+
 static void blkdev_vm_open(struct vm_area_struct *vma)
 {
 	struct inode *bd_inode = bdev_file_inode(vma->vm_file);
@@ -1764,6 +1770,7 @@ static const struct vm_operations_struct blkdev_dax_vm_ops = {
 	.close		= blkdev_vm_close,
 	.fault		= blkdev_dax_fault,
 	.pmd_fault	= blkdev_dax_pmd_fault,
+	.pud_fault	= blkdev_dax_pud_fault,
 	.pfn_mkwrite	= blkdev_dax_fault,
 };
 
-- 
2.6.2

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