From e93ecf602beb8439f0bdcc1fa2cbc1f31fdfb8e2 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 19 May 2014 09:17:48 -0600 Subject: blk-mq: move the cache friendly bitmap type of out blk-mq-tag We will use it for the pending list in blk-mq core as well. Signed-off-by: Jens Axboe --- block/blk-mq.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'block/blk-mq.h') diff --git a/block/blk-mq.h b/block/blk-mq.h index 97cfab9c092f..5e5a378962b7 100644 --- a/block/blk-mq.h +++ b/block/blk-mq.h @@ -52,4 +52,13 @@ void blk_mq_disable_hotplug(void); extern unsigned int *blk_mq_make_queue_map(struct blk_mq_tag_set *set); extern int blk_mq_update_queue_map(unsigned int *map, unsigned int nr_queues); +/* + * Basic implementation of sparser bitmap, allowing the user to spread + * the bits over more cachelines. + */ +struct blk_align_bitmap { + unsigned long word; + unsigned long depth; +} ____cacheline_aligned_in_smp; + #endif -- cgit v1.2.3