Rob Norris 390b448726 abd: add page iterator ... The regular ABD iterators yield data buffers, so they have to map and unmap pages into kernel memory. If the caller only wants to count chunks, or can use page pointers directly, then the map/unmap is just unnecessary overhead. This adds adb_iterate_page_func, which yields unmapped struct page instead. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Closes #15533 Closes #15588		2024-03-25 16:50:35 -07:00
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freebsd	abd: add page iterator	2024-03-25 16:50:35 -07:00
linux	abd: add page iterator	2024-03-25 16:50:35 -07:00