linux-ext4 - Re: [PATCH 3/7] add nowait parameter for iomap

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Message-ID: <ZMGXnVX3+C5PHpiC@dread.disaster.area>
Date:   Thu, 27 Jul 2023 08:01:01 +1000
From:   Dave Chinner <david@...morbit.com>
To:     Hao Xu <hao.xu@...ux.dev>
Cc:     io-uring@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Pavel Begunkov <asml.silence@...il.com>,
        Christian Brauner <brauner@...nel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Stefan Roesch <shr@...com>, Clay Harris <bugs@...ycon.org>,
        "Darrick J . Wong" <djwong@...nel.org>,
        linux-fsdevel@...r.kernel.org, linux-xfs@...r.kernel.org,
        linux-ext4@...r.kernel.org, Wanpeng Li <wanpengli@...cent.com>
Subject: Re: [PATCH 3/7] add nowait parameter for iomap_seek()

On Wed, Jul 26, 2023 at 06:25:59PM +0800, Hao Xu wrote:
> From: Hao Xu <howeyxu@...cent.com>
> 
> Add a nowait parameter for iomap_seek(), later IOMAP_NOWAIT is set
> according to this parameter's value.

This shows the problem with adding booleans as flags to
functions. Now there are -two- anonymous boolean flags to
iomap_seek(), and reading the code becomes really hard to know what
is actually being asked of iomap_seek().

This is another reason for not combining iomap_seek_data/hole()...

-Dave.
-- 
Dave Chinner
david@...morbit.com