tree ea51e89f8c8bf9ca8e888d68ecf6732a52e8e99d
parent 75274551c81796b636c5acb0c2597dec7ec2e6c4
author Shaohua Li <shli@kernel.org> 1355454936 +0800
committer Jens Axboe <axboe@kernel.dk> 1355514364 +0100

block: discard granularity might not be power of 2

In MD raid case, discard granularity might not be power of 2, for example, a
4-disk raid5 has 3*chunk_size discard granularity. Correct the calculation for
such cases.

Reported-by: Neil Brown <neilb@suse.de>
Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>