From a72132c31d580969a38972aaf925915e861cd342 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Wed, 4 Jun 2014 16:07:49 -0700 Subject: brd: add support for rw_page() Signed-off-by: Matthew Wilcox Cc: Dave Chinner Cc: Dheeraj Reddy Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/brd.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/block') diff --git a/drivers/block/brd.c b/drivers/block/brd.c index e73b85cf075..807d3d5d2fe 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, -- cgit v1.2.3-70-g09d2