The incoming bio will become very big after multipage bvec is enabled,
so we can't clone bio page by page.
This patch uses the introduced bio_clone_seg_bioset(), so the incoming
bio can be cloned successfully. This way is safe because device mapping
won't modify the bio vector on the cloned
The incoming bio will become very big after multipage bvec is enabled,
so we can't clone bio page by page.
This patch uses the introduced bio_clone_seg_bioset(), so the incoming
bio can be cloned successfully. This way is safe because device mapping
won't modify the bio vector on the cloned
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