brd: add support for rw_page()
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Dheeraj Reddy <dheeraj.reddy@intel.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -360,6 +360,15 @@ out:
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bio_endio(bio, err);
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}
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static int brd_rw_page(struct block_device *bdev, sector_t sector,
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struct page *page, int rw)
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{
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struct brd_device *brd = bdev->bd_disk->private_data;
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int err = brd_do_bvec(brd, page, PAGE_CACHE_SIZE, 0, rw, sector);
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page_endio(page, rw & WRITE, err);
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return err;
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}
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#ifdef CONFIG_BLK_DEV_XIP
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static int brd_direct_access(struct block_device *bdev, sector_t sector,
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void **kaddr, unsigned long *pfn)
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@ -419,6 +428,7 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode,
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static const struct block_device_operations brd_fops = {
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.owner = THIS_MODULE,
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.rw_page = brd_rw_page,
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.ioctl = brd_ioctl,
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#ifdef CONFIG_BLK_DEV_XIP
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.direct_access = brd_direct_access,
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