From: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Based on commit a72132c31d58 brd: add support for rw_page()
Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
---
drivers/block/prd.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/block/prd.c b/drivers/block/prd.c
index 7684197..4cfc4f8 100644
--- a/drivers/block/prd.c
+++ b/drivers/block/prd.c
@@ -185,6 +185,16 @@ out:
bio_endio(bio, err);
}
+static int prd_rw_page(struct block_device *bdev, sector_t sector,
+ struct page *page, int rw)
+{
+ struct prd_device *prd = bdev->bd_disk->private_data;
+
+ prd_do_bvec(prd, page, PAGE_CACHE_SIZE, 0, rw, sector);
+ page_endio(page, rw & WRITE, 0);
+ return 0;
+}
+
static long prd_direct_access(struct block_device *bdev, sector_t sector,
void **kaddr, unsigned long *pfn, long size)
{
@@ -201,6 +211,7 @@ static long prd_direct_access(struct block_device *bdev, sector_t sector,
static const struct block_device_operations prd_fops = {
.owner = THIS_MODULE,
+ .rw_page = prd_rw_page,
.direct_access = prd_direct_access,
};
--
1.9.3
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