md: Fix check for overlapping devices.

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The checks in overlaps() expect all parameters either in block-based
or sector-based quantities. However, its single caller passes two
rdev->data_offset arguments as well as two rdev->size arguments, the
former being sector counts while the latter are measured in 1K blocks.

This could cause rdev_size_store() to accept an invalid size from user
space. Fix it by passing only sector-based quantities to overlaps().

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>

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Andre Noll 2008-07-21 14:42:07 +10:00 • committed by NeilBrown

parent d7027458d6

commit d07bd3bcc4

1 changed files with 3 additions and 2 deletions

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drivers/md/md.c

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