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Date:   Wed, 7 Sep 2022 13:35:17 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc:     Christoph Hellwig <hch@lst.de>, Chris Mason <clm@fb.com>,
        Josef Bacik <josef@toxicpanda.com>,
        David Sterba <dsterba@suse.com>,
        Naohiro Aota <naohiro.aota@wdc.com>,
        Johannes Thumshirn <johannes.thumshirn@wdc.com>,
        Qu Wenruo <wqu@suse.com>, linux-btrfs@vger.kernel.org
Subject: Re: code placement for bio / storage layer code
Message-ID: <20220907113517.GA9643@lst.de>
References: <20220901074216.1849941-1-hch@lst.de> <20220907091056.GA32007@lst.de> <382f747b-7ea3-f1a9-805f-0550ae90963e@gmx.com> <20220907111009.GA8131@lst.de> <f1d43420-3fda-1287-5fc2-4035ea988e0c@gmx.com>
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On Wed, Sep 07, 2022 at 07:27:48PM +0800, Qu Wenruo wrote:
>>   - btrfs_submit_bio
>>   - btrfs_submit_mirrored_bio
>>   - btrfs_submit_dev_bio
>>   - btrfs_clone_write_end_io
>>   - btrfs_orig_write_end_io
>>   - btrfs_raid56_end_io
>
> This is scrub only usage, I guess we may find a better way to determine
> if it should go there.

Nothing of this is scrub only.  All the above are called by
btrfs_submit_bio, or set up as end_io handlers by them.