Re: [PATCH 01/19] char_dev: replace cdev_map with an xarray

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Subject: Re: [PATCH 01/19] char_dev: replace cdev_map with an xarray
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Date: Sun, 30 Aug 2020 09:31:01 +0200
Cc: Jens Axboe <axboe@xxxxxxxxx>, "Rafael J. Wysocki" <rafael@xxxxxxxxxx>, Denis Efremov <efremov@xxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Song Liu <song@xxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-ide@xxxxxxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-m68k@xxxxxxxxxxxxxxx
In-reply-to: <20200830062445.1199128-2-hch@lst.de>
References: <20200830062445.1199128-1-hch@lst.de> <20200830062445.1199128-2-hch@lst.de>

On Sun, Aug 30, 2020 at 08:24:27AM +0200, Christoph Hellwig wrote:

None of the complicated overlapping regions bits of the kobj_map are
required for the character device lookup, so just a trivial xarray
instead.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>


Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

References:
- simplify gendisk lookup and remove struct block_device aliases v2
  - From: Christoph Hellwig
- [PATCH 01/19] char_dev: replace cdev_map with an xarray
  - From: Christoph Hellwig

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