From: Hannes Reinecke <hare@suse.de>
To: "Pankaj Raghav (Samsung)" <kernel@pankajraghav.com>,
Suren Baghdasaryan <surenb@google.com>,
Ryan Roberts <ryan.roberts@arm.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Vlastimil Babka <vbabka@suse.cz>, Zi Yan <ziy@nvidia.com>,
Mike Rapoport <rppt@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Michal Hocko <mhocko@suse.com>,
David Hildenbrand <david@redhat.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Nico Pache <npache@redhat.com>, Dev Jain <dev.jain@arm.com>,
"Liam R . Howlett" <Liam.Howlett@oracle.com>,
Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org, willy@infradead.org,
linux-mm@kvack.org, Ritesh Harjani <ritesh.list@gmail.com>,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
"Darrick J . Wong" <djwong@kernel.org>,
mcgrof@kernel.org, gost.dev@samsung.com, hch@lst.de,
Pankaj Raghav <p.raghav@samsung.com>
Subject: Re: [PATCH v2 5/5] block: use largest_zero_folio in __blkdev_issue_zero_pages()
Date: Mon, 18 Aug 2025 14:05:49 +0200 [thread overview]
Message-ID: <fde3cd06-d660-4b38-940b-4d089ee2c4c4@suse.de> (raw)
In-Reply-To: <20250808121141.624469-6-kernel@pankajraghav.com>
On 8/8/25 14:11, Pankaj Raghav (Samsung) wrote:
> From: Pankaj Raghav <p.raghav@samsung.com>
>
> 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 <lorenzo.stoakes@oracle.com>
> Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
> ---
> 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
next prev parent reply other threads:[~2025-08-18 12:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-08 12:11 [PATCH v2 0/5] add persistent huge zero folio support Pankaj Raghav (Samsung)
2025-08-08 12:11 ` [PATCH v2 1/5] mm: rename huge_zero_page to huge_zero_folio Pankaj Raghav (Samsung)
2025-08-18 6:38 ` Hannes Reinecke
2025-08-08 12:11 ` [PATCH v2 2/5] mm: rename MMF_HUGE_ZERO_PAGE to MMF_HUGE_ZERO_FOLIO Pankaj Raghav (Samsung)
2025-08-18 6:39 ` Hannes Reinecke
2025-08-08 12:11 ` [PATCH v2 3/5] mm: add persistent huge zero folio Pankaj Raghav (Samsung)
2025-08-08 12:47 ` Pankaj Raghav (Samsung)
2025-08-08 15:47 ` Lorenzo Stoakes
2025-08-11 8:33 ` Pankaj Raghav (Samsung)
2025-08-18 12:02 ` Hannes Reinecke
2025-08-08 12:11 ` [PATCH v2 4/5] mm: add largest_zero_folio() routine Pankaj Raghav (Samsung)
2025-08-08 15:50 ` Lorenzo Stoakes
2025-08-18 12:04 ` Hannes Reinecke
2025-08-08 12:11 ` [PATCH v2 5/5] block: use largest_zero_folio in __blkdev_issue_zero_pages() Pankaj Raghav (Samsung)
2025-08-18 12:05 ` Hannes Reinecke [this message]
-- strict thread matches above, loose matches on Subject: below --
2025-07-07 14:23 [PATCH v2 0/5] add static PMD zero page support Pankaj Raghav (Samsung)
2025-07-07 14:23 ` [PATCH v2 5/5] block: use largest_zero_folio in __blkdev_issue_zero_pages() Pankaj Raghav (Samsung)
2025-07-15 16:19 ` Lorenzo Stoakes
2025-07-16 13:24 ` Pankaj Raghav (Samsung)
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