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Omar Sandoval authored
scrub_submit() claims that it can handle a bio with a NULL block device, but this is misleading, as calling bio_add_page() on a bio with a NULL ->bi_bdev would've already crashed. Delete this, as we're about to properly handle a missing block device. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
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