btrfs-progs: use round_down for allocation calcs

Several calculations in the chunk allocation process use this pattern.

    x /= y;
    x *= y;

Replace this pattern with round_down().

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2021-04-06 17:05:51 +09:00 committed by David Sterba
parent 907c5fd7a4
commit 2d3b31d604