From: Christoph Hellwig <hch@lst.de>
To: Stefan Haberland <sth@linux.ibm.com>
Cc: axboe@kernel.dk, hch@lst.de, linux-block@vger.kernel.org,
hoeppner@linux.ibm.com, linux-s390@vger.kernel.org,
heiko.carstens@de.ibm.com, gor@linux.ibm.com,
borntraeger@de.ibm.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] s390/dasd: remove ioctl_by_bdev from DASD driver
Date: Thu, 30 Apr 2020 15:13:52 +0200 [thread overview]
Message-ID: <20200430131351.GA24813@lst.de> (raw)
In-Reply-To: <20200430111754.98508-2-sth@linux.ibm.com>
On Thu, Apr 30, 2020 at 01:17:54PM +0200, Stefan Haberland wrote:
> Remove the calls to ioctl_by_bdev from the DASD partition detection code
> to enable the removal of the specific code.
>
> To do so reuse the gendisk private_data pointer and not only provide a
> pointer to the devmap but provide a new structure containing a pointer
> to the devmap as well as all required information for the partition
> detection. This makes it independent from the dasd_information2_t
> structure.
I think sharing the data structure in private data is pretty dangerous.
In the meantime I thought of another idea - the partition code could
do a symbol_get of a symbol exported by the dasd driver and use that
to query the information.
next prev parent reply other threads:[~2020-04-30 13:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-30 11:17 [PATCH 0/1] remove ioclt_by_bdev from DASD Stefan Haberland
2020-04-30 11:17 ` [PATCH 1/1] s390/dasd: remove ioctl_by_bdev from DASD driver Stefan Haberland
2020-04-30 13:13 ` Christoph Hellwig [this message]
2020-04-30 14:02 ` Stefan Haberland
2020-05-04 8:45 ` Stefan Haberland
2020-05-05 12:44 ` Christoph Hellwig
2020-05-05 15:09 ` Stefan Haberland
2020-05-06 4:52 ` Christoph Hellwig
2020-05-07 15:22 ` Stefan Haberland
2020-05-07 15:29 ` Christoph Hellwig
2020-05-07 15:43 ` Stefan Haberland
2020-05-07 15:45 ` Christoph Hellwig
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