From: Alasdair G Kergon Fix the 'sizeof' in the region log bitmap size calculation: it's uint32_t, not unsigned long - this breaks on some archs. Signed-off-by: Alasdair G Kergon Signed-off-by: Andrew Morton --- drivers/md/dm-log.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN drivers/md/dm-log.c~dm-mirror-log-bitset_size-fix drivers/md/dm-log.c --- a/drivers/md/dm-log.c~dm-mirror-log-bitset_size-fix +++ a/drivers/md/dm-log.c @@ -295,10 +295,10 @@ static int create_log_context(struct dir * Work out how many "unsigned long"s we need to hold the bitset. */ bitset_size = dm_round_up(region_count, - sizeof(unsigned long) << BYTE_SHIFT); + sizeof(*lc->clean_bits) << BYTE_SHIFT); bitset_size >>= BYTE_SHIFT; - lc->bitset_uint32_count = bitset_size / 4; + lc->bitset_uint32_count = bitset_size / sizeof(*lc->clean_bits); /* * Disk log? _