Re: [PATCH v2 5/5] block: use largest_zero_folio in __blkdev_issue_zero_pages()
From: Hannes Reinecke <hare@suse.de>
Date: 2025-08-18 12:05:57
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linux-fsdevel, linux-mm, lkml
On 8/8/25 14:11, Pankaj Raghav (Samsung) wrote:
From: Pankaj Raghav <redacted> 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. Acked-by: Lorenzo Stoakes <redacted> Signed-off-by: Pankaj Raghav <redacted> --- block/blk-lib.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)
Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich