dm cache: fix corruption seen when using cache > 2TB

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A rounding bug due to compiler generated temporary being 32bit was found
in remap_to_cache().  A localized cast in remap_to_cache() fixes the
corruption but this preferred fix (changing from uint32_t to sector_t)
eliminates potential for future rounding errors elsewhere.

Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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Joe Thornber 2017-02-09 11:46:18 -05:00 • committed by Mike Snitzer

parent 105db59912

commit ca763d0a53

1 changed files with 3 additions and 3 deletions

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6

drivers/md/dm-cache-target.c

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