linux-kernel - Re: [PATCH v1 00/54] block: support multipage bvec

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Date:   Mon, 16 Jan 2017 23:50:11 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Ming Lei <tom.leiming@...il.com>
Cc:     Christoph Hellwig <hch@...radead.org>, Jens Axboe <axboe@...com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-block <linux-block@...r.kernel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kent Overstreet <kent.overstreet@...il.com>
Subject: Re: [PATCH v1 00/54] block: support multipage bvec

On Tue, Jan 17, 2017 at 10:40:36AM +0800, Ming Lei wrote:
> IMO, the only one left is raid(1/5/10) which can be dealt with by the
> "NO_MP" flag.

No, they can't in the long run.  They need to handle the bvecs just
like everyone else.