From: Christoph Hellwig <hch@lst.de>
To: Christian Brauner <brauner@kernel.org>
Cc: Yu Kuai <yukuai1@huaweicloud.com>, Christoph Hellwig <hch@lst.de>,
jack@suse.cz, axboe@kernel.dk, linux-fsdevel@vger.kernel.org,
linux-block@vger.kernel.org, yi.zhang@huawei.com,
yangerkun@huawei.com, "yukuai (C)" <yukuai3@huawei.com>
Subject: Re: [RFC v4 linux-next 19/19] fs & block: remove bdev->bd_inode
Date: Tue, 19 Mar 2024 00:35:17 +0100 [thread overview]
Message-ID: <20240318233517.GA17983@lst.de> (raw)
In-Reply-To: <20240318-fassen-xylofon-1d50d573a196@brauner>
On Mon, Mar 18, 2024 at 11:29:17AM +0100, Christian Brauner wrote:
> Don't forget:
>
> mknod /my/xfs/file/system b 8 0
>
> which means you're not opening it via devtmpfs but via xfs. IOW, the
> inode for that file is from xfs.
Yes. file_inode() for block devices is always the "upper" fs, which can
be any file system supporting device nodes. file->f_mapping->host will
always be the bdevfs inode, and nothing in the I/O path should ever be
using file_inode().
next prev parent reply other threads:[~2024-03-18 23:35 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-22 12:45 [RFC v4 linux-next 00/19] fs & block: remove bdev->bd_inode Yu Kuai
2024-02-22 12:45 ` [RFC v4 linux-next 01/19] block: move two helpers into bdev.c Yu Kuai
2024-03-15 14:31 ` Jan Kara
2024-03-17 21:19 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 02/19] block: remove sync_blockdev_nowait() Yu Kuai
2024-03-15 14:34 ` Jan Kara
2024-03-17 21:19 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 03/19] block: remove sync_blockdev_range() Yu Kuai
2024-03-15 14:37 ` Jan Kara
2024-03-17 21:21 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 04/19] block: prevent direct access of bd_inode Yu Kuai
2024-03-15 14:44 ` Jan Kara
2024-03-17 21:23 ` Christoph Hellwig
2024-03-22 5:44 ` Al Viro
2024-02-22 12:45 ` [RFC v4 linux-next 05/19] bcachefs: remove dead function bdev_sectors() Yu Kuai
2024-03-15 14:42 ` Jan Kara
2024-03-17 21:23 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 06/19] cramfs: prevent direct access of bd_inode Yu Kuai
2024-03-15 14:44 ` Jan Kara
2024-03-17 21:23 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 07/19] erofs: " Yu Kuai
2024-03-15 14:45 ` Jan Kara
2024-03-17 21:24 ` Christoph Hellwig
2024-03-18 2:39 ` Gao Xiang
2024-02-22 12:45 ` [RFC v4 linux-next 08/19] nilfs2: " Yu Kuai
2024-03-15 14:49 ` Jan Kara
2024-03-17 21:24 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 09/19] gfs2: " Yu Kuai
2024-03-15 14:54 ` Jan Kara
2024-03-17 21:24 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 10/19] s390/dasd: use bdev api in dasd_format() Yu Kuai
2024-03-15 14:55 ` Jan Kara
2024-03-17 21:25 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 11/19] btrfs: prevent direct access of bd_inode Yu Kuai
2024-03-15 15:09 ` Jan Kara
2024-03-17 21:25 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 12/19] ext4: remove block_device_ejected() Yu Kuai
2024-02-22 12:45 ` [RFC v4 linux-next 13/19] ext4: prevent direct access of bd_inode Yu Kuai
2024-03-15 14:58 ` Jan Kara
2024-03-17 21:25 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 14/19] jbd2: " Yu Kuai
2024-03-15 15:06 ` Jan Kara
2024-03-17 21:26 ` Christoph Hellwig
2024-03-18 1:10 ` Yu Kuai
2024-02-22 12:45 ` [RFC v4 linux-next 15/19] bcache: " Yu Kuai
2024-03-15 15:11 ` Jan Kara
2024-03-17 21:34 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 16/19] block2mtd: " Yu Kuai
2024-03-15 15:12 ` Jan Kara
2024-03-17 21:36 ` Christoph Hellwig
2024-02-22 12:45 ` [RFC v4 linux-next 17/19] dm-vdo: " Yu Kuai
2024-02-28 13:41 ` Christoph Hellwig
2024-03-18 9:11 ` Jan Kara
2024-03-18 9:19 ` Jan Kara
2024-03-18 13:38 ` Yu Kuai
2024-03-19 2:00 ` Matthew Sakai
2024-02-22 12:45 ` [RFC v4 linux-next 18/19] scsi: factor out a helper bdev_read_folio() from scsi_bios_ptable() Yu Kuai
2024-03-17 21:36 ` Christoph Hellwig
2024-03-18 1:12 ` Yu Kuai
2024-03-18 9:22 ` Jan Kara
2024-02-22 12:45 ` [RFC v4 linux-next 19/19] fs & block: remove bdev->bd_inode Yu Kuai
2024-03-17 21:38 ` Christoph Hellwig
2024-03-18 1:26 ` Yu Kuai
2024-03-18 1:32 ` Christoph Hellwig
2024-03-18 1:51 ` Yu Kuai
2024-03-18 7:19 ` Yu Kuai
2024-03-18 10:07 ` Christian Brauner
2024-03-18 10:29 ` Christian Brauner
2024-03-18 10:46 ` Christian Brauner
2024-03-18 11:57 ` Yu Kuai
2024-03-18 23:35 ` Christoph Hellwig [this message]
2024-03-18 23:22 ` Christoph Hellwig
2024-03-19 8:26 ` Yu Kuai
2024-03-21 11:27 ` Jan Kara
2024-03-21 12:15 ` Yu Kuai
2024-03-22 6:37 ` Al Viro
2024-03-22 6:39 ` Al Viro
2024-03-22 6:52 ` Yu Kuai
2024-03-22 12:57 ` Jan Kara
2024-03-22 13:57 ` Christian Brauner
2024-03-22 15:43 ` Al Viro
2024-03-22 16:16 ` Al Viro
2024-03-22 6:33 ` Al Viro
2024-03-22 7:09 ` Yu Kuai
2024-03-22 16:01 ` Al Viro
2024-03-22 13:10 ` Jan Kara
2024-03-22 14:57 ` Al Viro
2024-03-25 1:06 ` Christoph Hellwig
2024-02-28 13:42 ` [RFC v4 linux-next 00/19] " Christoph Hellwig
2024-03-15 12:08 ` Yu Kuai
2024-03-15 13:54 ` Christian Brauner
2024-03-16 2:49 ` Yu Kuai
2024-03-18 9:39 ` Christian Brauner
2024-03-19 1:18 ` Yu Kuai
2024-03-19 1:43 ` Yu Kuai
2024-03-19 2:13 ` Matthew Sakai
2024-03-19 2:27 ` Yu Kuai
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