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brd: add support for rw_page()

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Signed-off-by: Matthew Wilcox <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Dheeraj Reddy <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Matthew Wilcox 2014-06-04 16:07:49 -07:00 • committed by Linus Torvalds
commit a72132c31d
1 changed files with 10 additions and 0 deletions
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10
drivers/block/brd.c
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@ -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,