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From: Qu Wenruo <wqu@suse.com>
To: Qu Wenruo <quwenruo.btrfs@gmx.com>,
	dsterba@suse.cz, linux-btrfs@vger.kernel.org
Subject: Re: [PATCH v3 1/3] btrfs: rename btrfs_bio to btrfs_io_context
Date: Fri, 17 Sep 2021 19:27:30 +0800	[thread overview]
Message-ID: <5767f47f-fd6d-1c50-e6b4-90c8bd0d8fdd@suse.com> (raw)
In-Reply-To: <c0d3f033-5b53-4026-d38d-e7e9284c1f80@gmx.com>



On 2021/9/17 19:24, Qu Wenruo wrote:
> 
> 
> On 2021/9/17 19:19, David Sterba wrote:
>> On Wed, Sep 15, 2021 at 03:17:16PM +0800, Qu Wenruo wrote:
>>> The structure btrfs_bio is used by two different sites:
>>>
>>> - bio->bi_private for mirror based profiles
>>>    For those profiles (SINGLE/DUP/RAID1*/RAID10), this structures 
>>> records
>>
>> Why is SINGLE here?
>>
> For single we use the same routine as RAID1/DUP/etc, it's
> submit_stripe_bio() doing the remapping.
> 
> Thus there is really only two types, non-RAID56 and RAID56.

And there is no really "SINGLE" profile in btrfs.

As even for SINGLE profile, we may need to submit two bios to two 
different devices (one is the current device, the other is the 
dev-replace target).

Thanks,
Qu

> 
> Thanks,
> Qu
> 


  reply	other threads:[~2021-09-17 11:27 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-15  7:17 [PATCH v3 0/3] btrfs: btrfs_bio and btrfs_io_bio rename Qu Wenruo
2021-09-15  7:17 ` [PATCH v3 1/3] btrfs: rename btrfs_bio to btrfs_io_context Qu Wenruo
2021-09-17 11:19   ` David Sterba
2021-09-17 11:24     ` Qu Wenruo
2021-09-17 11:27       ` Qu Wenruo [this message]
2021-09-17 11:33         ` David Sterba
2021-09-15  7:17 ` [PATCH v3 2/3] btrfs: remove btrfs_bio_alloc() helper Qu Wenruo
2021-09-17 12:27   ` Nikolay Borisov
2021-09-17 12:33     ` Qu Wenruo
2021-09-17 12:34       ` Nikolay Borisov
2021-09-17 12:43     ` David Sterba
2021-09-17 12:49       ` Nikolay Borisov
2021-09-20 10:33         ` Qu Wenruo
2021-09-20 12:41           ` David Sterba
2021-09-20 12:42             ` Qu Wenruo
2021-09-23  5:57   ` Qu Wenruo
2021-09-15  7:17 ` [PATCH v3 3/3] btrfs: rename struct btrfs_io_bio to btrfs_logical_bio Qu Wenruo
2021-09-17 11:39   ` David Sterba
2021-09-20  7:04   ` Nikolay Borisov
2021-09-20 12:23     ` David Sterba
2021-09-20 13:10       ` David Sterba
2021-09-17 11:39 ` [PATCH v3 0/3] btrfs: btrfs_bio and btrfs_io_bio rename David Sterba

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