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blk-mq: user (1 << order) to implement order_to_size()

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Cc: Jörg-Volker Peetz <jvpeetz@web.de>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Ming Lei 2014-04-19 18:00:18 +08:00 • committed by Jens Axboe
parent 4847900532
commit 4ca085009f
1 changed files with 1 additions and 6 deletions
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7
block/blk-mq.c
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@ -1130,12 +1130,7 @@ static void blk_mq_free_rq_map(struct blk_mq_tag_set *set,
static size_t order_to_size(unsigned int order) static size_t order_to_size(unsigned int order)
{ {
size_t ret = PAGE_SIZE; return (size_t)PAGE_SIZE << order;
while (order--)
ret *= 2;
return ret;
} }
static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set, static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,