linux-kernel - Re: [PATCH v20 01/12] block: Introduce queue limits and sysfs for copy-offload support

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Message-ID: <b522fbad-ef5c-479b-95e8-1dcfefcbdb02@suse.de>
Date: Tue, 21 May 2024 08:57:29 +0200
From: Hannes Reinecke <hare@...e.de>
To: Nitesh Shetty <nj.shetty@...sung.com>, Jens Axboe <axboe@...nel.dk>,
 Jonathan Corbet <corbet@....net>, Alasdair Kergon <agk@...hat.com>,
 Mike Snitzer <snitzer@...nel.org>, Mikulas Patocka <mpatocka@...hat.com>,
 Keith Busch <kbusch@...nel.org>, Christoph Hellwig <hch@....de>,
 Sagi Grimberg <sagi@...mberg.me>, Chaitanya Kulkarni <kch@...dia.com>,
 Alexander Viro <viro@...iv.linux.org.uk>,
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>
Cc: martin.petersen@...cle.com, bvanassche@....org, david@...morbit.com,
 damien.lemoal@...nsource.wdc.com, anuj20.g@...sung.com, joshi.k@...sung.com,
 nitheshshetty@...il.com, gost.dev@...sung.com, linux-block@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
 dm-devel@...ts.linux.dev, linux-nvme@...ts.infradead.org,
 linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v20 01/12] block: Introduce queue limits and sysfs for
 copy-offload support

On 5/20/24 12:20, Nitesh Shetty wrote:
> Add device limits as sysfs entries,
> 	- copy_max_bytes (RW)
> 	- copy_max_hw_bytes (RO)
> 
> Above limits help to split the copy payload in block layer.
> copy_max_bytes: maximum total length of copy in single payload.
> copy_max_hw_bytes: Reflects the device supported maximum limit.
> 
> Signed-off-by: Nitesh Shetty <nj.shetty@...sung.com>
> Signed-off-by: Kanchan Joshi <joshi.k@...sung.com>
> Signed-off-by: Anuj Gupta <anuj20.g@...sung.com>
> ---
>   Documentation/ABI/stable/sysfs-block | 23 +++++++++++++++
>   block/blk-settings.c                 | 34 ++++++++++++++++++++--
>   block/blk-sysfs.c                    | 43 ++++++++++++++++++++++++++++
>   include/linux/blkdev.h               | 14 +++++++++
>   4 files changed, 112 insertions(+), 2 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@...e.de                                +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich