Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device

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To: Yu Kuai <yukuai1@xxxxxxxxxxxxxxx>
Subject: Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Fri, 12 Apr 2024 08:13:45 +0100
Cc: Christian Brauner <brauner@xxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, hch@xxxxxx, axboe@xxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, yi.zhang@xxxxxxxxxx, yangerkun@xxxxxxxxxx, "yukuai (C)" <yukuai3@xxxxxxxxxx>
In-reply-to: <20240412044116.GL2118490@ZenIV>
References: <20240409042643.GP538574@ZenIV> <49f99e7b-3983-8074-bb09-4b093c1269d1@huaweicloud.com> <20240410105911.hfxz4qh3n5ekrpqg@quack3> <20240410223443.GG2118490@ZenIV> <20240411-logik-besorgen-b7d590d6c1e9@brauner> <20240411140409.GH2118490@ZenIV> <20240411144930.GI2118490@ZenIV> <d89916c0-6220-449e-ff5f-f299fd4a1483@huaweicloud.com> <20240412025910.GJ2118490@ZenIV> <20240412044116.GL2118490@ZenIV>

On Fri, Apr 12, 2024 at 05:41:16AM +0100, Al Viro wrote:

> Christoph, do you have any problems with that approach?
> 
> COMPLETELY UNTESTED patch along those lines follows; if it works,
> it would need to be carved up.  And I would probably switch the
> places where we do if (bdev->bd_partno) to if (bdev_is_partition(bdev)),
> for better readability.

See 
git://git.kernel.org:/pub/scm/linux/kernel/git/viro/vfs.git bd_flags
for a carve-up

References:
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Al Viro
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Yu Kuai
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Jan Kara
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Al Viro
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Christian Brauner
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Al Viro
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Al Viro
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Yu Kuai
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Al Viro
- Re: [PATCH vfs.all 22/26] block: stash a bdev_file to read/write raw blcok_device
  - From: Al Viro

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