ubd: open the backing files in ubd_add

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Opening the backing device only when the block device is opened is
a bit weird as no one configures block devices to not use them.
Opend them at add time, close them at remove time and remove the
now superflous opened counter as remove can simply check for
disk_openers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Richard Weinberger <richard@nod.at>
Link: https://lore.kernel.org/r/20240222072417.3773131-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2024-02-22 08:24:17 +01:00 • committed by Jens Axboe

parent f3c17dcc43

commit fb5d1d389c

1 changed files with 16 additions and 42 deletions

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arch/um/drivers/ubd_kern.c

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