linux-kernel - Re: [PATCH 1/2] block: Rework bio_for_each_segment

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Message-ID: <ZCXNDQ6Eslhj+9g5@moria.home.lan>
Date:   Thu, 30 Mar 2023 13:55:25 -0400
From:   Kent Overstreet <kent.overstreet@...ux.dev>
To:     Phillip Lougher <phillip@...ashfs.org.uk>
Cc:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        willy@...radead.org, axboe@...nel.dk,
        Ming Lei <ming.lei@...hat.com>
Subject: Re: [PATCH 1/2] block: Rework bio_for_each_segment_all()

On Wed, Mar 29, 2023 at 05:50:27PM +0100, Phillip Lougher wrote:
> There is a problem with the above code, on testing I get the following
> results:
> 
> Index 78018785329, offset 49, bvec.bv_len 1024: In same bio, metadata length
> 32780

Could you share how you're doing your testing? I set up a basic test
(created images using every compression type, tested reading them) and
so far I'm not able to reproduce this.