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| author | Ming Lei <tom.leiming@gmail.com> | 2014-04-19 18:00:18 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-04-21 10:38:38 -0600 |
| commit | 4ca085009f447abc1c818f8802e908e9afdd77fa (patch) | |
| tree | 507b304c0a26595cb67f494abbd60015c5105915 /block/blk-mq.c | |
| parent | 4847900532c2dc0fc77b67f745c20e636d5b3125 (diff) | |
| download | lwn-4ca085009f447abc1c818f8802e908e9afdd77fa.tar.gz lwn-4ca085009f447abc1c818f8802e908e9afdd77fa.zip | |
blk-mq: user (1 << order) to implement order_to_size()
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>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index c2777970f28b..3a560a4db0b4 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -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) { - size_t ret = PAGE_SIZE; - - while (order--) - ret *= 2; - - return ret; + return (size_t)PAGE_SIZE << order; } static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set, |