diff options
Diffstat (limited to 'drivers/md/dm-log.c')
| -rw-r--r-- | drivers/md/dm-log.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index d316757a328b..2ddeb4250c59 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -425,6 +425,9 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti, */ bitset_size = dm_round_up(region_count, BITS_PER_LONG); bitset_size >>= BYTE_SHIFT; + /* Handle dm_round_up rollover on 32-bit systems */ + if (!bitset_size) + bitset_size = 1UL << (BITS_PER_LONG - BYTE_SHIFT); lc->bitset_uint32_count = bitset_size / sizeof(*lc->clean_bits); |