linux-kernel - Re: [PATCH 04/11] block: Improvements to bounce-buffer handling

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Message-ID: <20170421112825.GD12523@infradead.org>
Date:   Fri, 21 Apr 2017 04:28:25 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     NeilBrown <neilb@...e.com>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 04/11] block: Improvements to bounce-buffer handling

Do we want to doctor around the bio bouncing or leave it to the dma_ops
like other subsystems do?  These days dma_map_* is supposed to handle
any memory we throw at it, even if that means using bounce buffers
at that level.