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Pankaj Raghav
ea5e101fb6
Use largest_zero_folio() in __blkdev_issue_zero_pages(). On systems with CONFIG_PERSISTENT_HUGE_ZERO_FOLIO enabled, we will end up sending larger bvecs instead of multiple small ones. Noticed a 4% increase in performance on a commercial NVMe SSD which does not support OP_WRITE_ZEROES. The device's MDTS was 128K. The performance gains might be bigger if the device supports bigger MDTS. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Pankaj Raghav <[email protected]> Acked-by: Lorenzo Stoakes <[email protected]> Acked-by: David Hildenbrand <[email protected]> Reviewed-by: Hannes Reinecke <[email protected]> Cc: Kiryl Shutsemau <[email protected]> Cc: Baolin Wang <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: "Darrick J. Wong" <[email protected]> Cc: Dev Jain <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Liam Howlett <[email protected]> Cc: Luis Chamberalin <[email protected]> Cc: Mariano Pache <[email protected]> Cc: Matthew Wilcox (Oracle) <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: "Ritesh Harjani (IBM)" <[email protected]> Cc: Ryan Roberts <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Thomas Gleinxer <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Zi Yan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>