linux-kernel - Re: [PATCH v6 2/5] block: Introduce provisioning primitives

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Message-ID: <ZFp6QDkSm296+Qm6@redhat.com>
Date:   Tue, 9 May 2023 12:52:16 -0400
From:   Mike Snitzer <snitzer@...nel.org>
To:     Sarthak Kukreti <sarthakkukreti@...omium.org>
Cc:     dm-devel@...hat.com, linux-block@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        Theodore Ts'o <tytso@....edu>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Jason Wang <jasowang@...hat.com>,
        Bart Van Assche <bvanassche@...gle.com>,
        Christoph Hellwig <hch@...radead.org>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Brian Foster <bfoster@...hat.com>,
        Alasdair Kergon <agk@...hat.com>
Subject: Re: [PATCH v6 2/5] block: Introduce provisioning primitives

On Sat, May 06 2023 at  2:29P -0400,
Sarthak Kukreti <sarthakkukreti@...omium.org> wrote:

> Introduce block request REQ_OP_PROVISION. The intent of this request
> is to request underlying storage to preallocate disk space for the given
> block range. Block devices that support this capability will export
> a provision limit within their request queues.
> 
> This patch also adds the capability to call fallocate() in mode 0
> on block devices, which will send REQ_OP_PROVISION to the block
> device for the specified range,
> 
> Signed-off-by: Sarthak Kukreti <sarthakkukreti@...omium.org>

Reviewed-by: Mike Snitzer <snitzer@...nel.org>