linux-ext4 - Re: [PATCH 23/27] block: add a bdev_max_discard

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Date:   Fri, 15 Apr 2022 05:47:13 +0000
From:   Chaitanya Kulkarni <chaitanyak@...dia.com>
To:     Christoph Hellwig <hch@....de>, Jens Axboe <axboe@...nel.dk>
CC:     "dm-devel@...hat.com" <dm-devel@...hat.com>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
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        "ocfs2-devel@....oracle.com" <ocfs2-devel@....oracle.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Christoph Böhmwalder 
        <christoph.boehmwalder@...bit.com>, Coly Li <colyli@...e.de>,
        David Sterba <dsterba@...e.com>
Subject: Re: [PATCH 23/27] block: add a bdev_max_discard_sectors helper

On 4/14/22 21:52, Christoph Hellwig wrote:
> Add a helper to query the number of sectors support per each discard bio
> based on the block device and use this helper to stop various places from
> poking into the request_queue to see if discard is supported and if so how
> much.  This mirrors what is done e.g. for write zeroes as well.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> Reviewed-by: Martin K. Petersen <martin.petersen@...cle.com>
> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@...bit.com> [drbd]
> Acked-by: Coly Li <colyli@...e.de> [bcache]
> Acked-by: David Sterba <dsterba@...e.com> [btrfs]
> ---

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@...dia.com>

-ck