linux-kernel - Re: [PATCH v2 1/2] fs,block: Introduce RWF_ZONE

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Message-ID: <20200627065104.GA20157@infradead.org>
Date:   Sat, 27 Jun 2020 07:51:04 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Kanchan Joshi <joshi.k@...sung.com>
Cc:     Christoph Hellwig <hch@...radead.org>, axboe@...nel.dk,
        viro@...iv.linux.org.uk, bcrl@...ck.org, asml.silence@...il.com,
        Damien.LeMoal@....com, linux-fsdevel@...r.kernel.org,
        mb@...htnvm.io, linux-kernel@...r.kernel.org, linux-aio@...ck.org,
        io-uring@...r.kernel.org, linux-block@...r.kernel.org,
        selvakuma.s1@...sung.com, nj.shetty@...sung.com,
        javier.gonz@...sung.com, Arnav Dawn <a.dawn@...sung.com>
Subject: Re: [PATCH v2 1/2] fs,block: Introduce RWF_ZONE_APPEND and handling
 in direct IO path

On Sat, Jun 27, 2020 at 02:45:14AM +0530, Kanchan Joshi wrote:
> For block IO path (which is the scope of this patchset) there is no
> probelm in using RWF_APPEND for zone-append, because it does not do
> anything for block device. We can use that, avoiding introduction of
> RWF_ZONE_APPEND in user-space.

No, you are not just touching the block I/O path.  This is all over the
general file code, and all RWF_* flag are about file I/O.