linux-kernel - Re: [External] Re: [RFC PATCH] blk-throtl: Introduce sync queue for write ios

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Message-ID: <Y5tPftzjXN6RcswM@slm.duckdns.org>
Date:   Thu, 15 Dec 2022 06:46:54 -1000
From:   Tejun Heo <tj@...nel.org>
To:     hanjinke <hanjinke.666@...edance.com>
Cc:     josef@...icpanda.com, axboe@...nel.dk, cgroups@...r.kernel.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [External] Re: [RFC PATCH] blk-throtl: Introduce sync queue for
 write ios

Hello,

On Wed, Dec 14, 2022 at 12:02:53PM +0800, hanjinke wrote:
> Should we keep the main category of io based READ and WRITE, and within READ
> / WRITE the subcategory were SYNC and ASYNC ? This may give less intrusion
> into existing frameworks.

Ah, you haven't posted yet. So, yeah, let's do this. The code was a bit odd
looking after adding the sync queue on the side. For reads, we can just
consider everything synchrnous (or maybe treat SYNC the same way, I don't
know whether reads actually use SYNC flags tho).

Thanks.

-- 
tejun