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Date:   Wed, 29 Jun 2022 07:51:05 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Bart Van Assche <bvanassche@acm.org>
Cc:     Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
        linux-block@vger.kernel.org, Jaegeuk Kim <jaegeuk@kernel.org>,
        Keith Busch <kbusch@kernel.org>,
        Sagi Grimberg <sagi@grimberg.me>,
        Chaitanya Kulkarni <kch@nvidia.com>
Subject: Re: [PATCH v3 8/8] nvme: Enable pipelining of zoned writes
Message-ID: <20220629055105.GA16576@lst.de>
References: <20220627234335.1714393-1-bvanassche@acm.org> <20220627234335.1714393-9-bvanassche@acm.org> <20220628044939.GA22504@lst.de> <858f5f5c-720a-d054-a409-b41c3cfb9717@acm.org>
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On Tue, Jun 28, 2022 at 09:30:09AM -0700, Bart Van Assche wrote:
> Regarding zoned writes in Linux, Android devices use F2FS. F2FS submits 
> regular writes (REQ_OP_WRITE) to zoned devices. Patch 4/8 from this patch 
> series disables zone locking in the mq-deadline scheduler if the block 
> driver has set the QUEUE_FLAG_PIPELINE_ZONED_WRITES flag.

Please fix f2fs to use zone appends rather than working around the stack.