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- Use "physical pages" instead of "page frame numbers (PFNs)" for clarity - Remove "without any per-I/O overhead" claim from zero-copy description - Add scatter/gather limitation: each I/O's data must be contiguous within a single registered buffer Suggested-by: Caleb Sander Mateos <[email protected]> Signed-off-by: Ming Lei <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Jens Axboe <[email protected]>