tree 8bdf54967a8290f780216f767291623e67ee7e9b
parent 074a7aca7afa6f230104e8e65eba3420263714a5
author Tejun Heo <tj@kernel.org> 1219661775 +0900
committer Jens Axboe <jens.axboe@oracle.com> 1223535368 +0200

block: make partition array dynamic

disk->__part used to be statically allocated to the maximum possible
number of partitions.  This patch makes partition array allocation
dynamic.  The added overhead is minimal as only real change is one
memory dereference changed to RCU one.  This saves both a bit of
memory and cpu cycles iterating through unoccupied slots and makes
increasing partition limit easier.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>