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From: Christian Brauner <brauner@kernel.org>
To: Christoph Hellwig <hch@lst.de>, Jan Kara <jack@suse.cz>,
	Richard Weinberger <richard@nod.at>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org,
	Christian Brauner <brauner@kernel.org>
Subject: [PATCH 0/2] mtd: switch to keying by dev_t
Date: Tue, 29 Aug 2023 17:23:55 +0200	[thread overview]
Message-ID: <20230829-vfs-super-mtd-v1-0-fecb572e5df3@kernel.org> (raw)

Hey,

For this cycle Jan, Christoph, and myself switched the generic super
code to key superblocks for block devices by device number (sb->s_dev)
instead of block device pointers (sb->s_bdev).

Not just does this allow us to defer opening block devices after we
allocated a superblock it also allows us to move closing block devices
to a later point to avoid various deadlocks.

Similar to the generic code for block devices we need to switch mtd
devices to rely on sb->s_dev instead of sb->s_mtd to avoid potential
use-after-free issues.

I plan on taking this upstream as a fix during the merge window.

Thanks!
Christian

---



---
base-commit: dc3216b1416056b04712e53431f6e9aefdc83177
change-id: 20230829-vfs-super-mtd-1bb602abfc00


             reply	other threads:[~2023-08-29 15:25 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-29 15:23 Christian Brauner [this message]
2023-08-29 15:23 ` [PATCH 1/2] fs: export sget_dev() Christian Brauner
2023-08-29 16:29   ` Christian Brauner
2023-08-29 16:55     ` Richard Weinberger
2023-08-30  6:13       ` hch
2023-08-30  7:51         ` Christian Brauner
2023-08-30  6:14   ` Christoph Hellwig
2023-08-30  8:05     ` Christian Brauner
2023-08-30  9:38       ` Jan Kara
2023-08-30  9:43         ` Christian Brauner
2023-08-30 10:02           ` Christian Brauner
2023-08-30 10:10             ` Jan Kara
2023-08-29 15:23 ` [PATCH 2/2] mtd: key superblock by device number Christian Brauner
2023-08-30 10:13   ` Jan Kara
2023-08-30  9:50 ` [PATCH 0/2] mtd: switch to keying by dev_t Christian Brauner
2023-08-30 10:15   ` Richard Weinberger
2023-08-30 11:52 ` Christoph Hellwig
2023-08-30 12:19 ` Christian Brauner

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