Signed-off-by: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
---
drivers/block/brd.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index e73b85c..807d3d5 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -360,6 +360,15 @@ out:
bio_endio(bio, err);
}
+static int brd_rw_page(struct block_device *bdev, sector_t sector,
+ struct page *page, int rw)
+{
+ struct brd_device *brd = bdev->bd_disk->private_data;
+ int err = brd_do_bvec(brd, page, PAGE_CACHE_SIZE, 0, rw, sector);
+ page_endio(page, rw & WRITE, err);
+ return err;
+}
+
#ifdef CONFIG_BLK_DEV_XIP
static int brd_direct_access(struct block_device *bdev, sector_t sector,
void **kaddr, unsigned long *pfn)
@@ -419,6 +428,7 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode,
static const struct block_device_operations brd_fops = {
.owner = THIS_MODULE,
+ .rw_page = brd_rw_page,
.ioctl = brd_ioctl,
#ifdef CONFIG_BLK_DEV_XIP
.direct_access = brd_direct_access,
--
1.9.0
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