uml: handle block device hotplug errors

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If a disk fails to open, i.e.  its host file doesn't exist, it won't be
removable because the hot-unplug code checks the existence of its gendisk.
This won't exist because it is only allocated for successfully opened disks.
Thus, a typo on the command line can result in a unusable and unfixable disk.

This is fixed by freeing the gendisk if it's there, but not letting that
affect the removal.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

...

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Jeff Dike 2007-05-06 14:51:01 -07:00 • committed by Linus Torvalds

parent 1d94cda04e

commit b47d2debf2

1 changed files with 7 additions and 6 deletions

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arch/um/drivers/ubd_kern.c

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