From: Jens Axboe <axboe@kernel.dk>
To: Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
Hannes Reinecke <hare@suse.de>, Jan Kara <jack@suse.cz>
Cc: linux-block@vger.kernel.org, kernel-janitors@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] block: Fix the maximum minor value is blk_alloc_ext_minor()
Date: Mon, 28 Mar 2022 06:36:24 -0600 [thread overview]
Message-ID: <164847098496.6880.2578259301021456744.b4-ty@kernel.dk> (raw)
In-Reply-To: <cc17199798312406b90834e433d2cefe8266823d.1648306232.git.christophe.jaillet@wanadoo.fr>
On Sat, 26 Mar 2022 15:50:46 +0100, Christophe JAILLET wrote:
> ida_alloc_range(..., min, max, ...) returns values from min to max,
> inclusive.
>
> So, NR_EXT_DEVT is a valid idx returned by blk_alloc_ext_minor().
>
> This is an issue because in device_add_disk(), this value is used in:
> ddev->devt = MKDEV(disk->major, disk->first_minor);
> and NR_EXT_DEVT is '(1 << MINORBITS)'.
>
> [...]
Applied, thanks!
[1/1] block: Fix the maximum minor value is blk_alloc_ext_minor()
commit: d1868328dec5ae2cf210111025fcbc71f78dd5ca
Best regards,
--
Jens Axboe
prev parent reply other threads:[~2022-03-28 12:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-26 14:50 [PATCH] block: Fix the maximum minor value is blk_alloc_ext_minor() Christophe JAILLET
2022-03-28 8:20 ` Jan Kara
2022-03-28 12:36 ` Jens Axboe [this message]
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