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SubjectRe: stop using ioctl_by_bdev for file system access to CDROMs v2
On 4/25/20 1:56 AM, Christoph Hellwig wrote:
> Hi Jens,
> except for the DASD case under discussion the last users of ioctl_by_bdev
> are the file system drivers that want to query CDROM information using
> ioctls. This series switches them to use function calls directly into
> the CDROM midlayer instead, which implies:
> - adding a cdrom_device_info pointer to the gendisk, so that file systems
> can find it without going to the low-level driver first
> - ensuring that the CDROM midlayer (which isn't a lot of code) is built
> in if the file systems are built in so that they can actually call the
> exported functions
> Changes since v1:
> - fix up the no-CDROM error case in isofs_get_last_session to return 0
> instead of -EINVAL.

Applied for 5.8, thanks.

Jens Axboe

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