tree 10307829129eb8f96facbb89fefbba3c0032fb46
parent ed44832dea8a74f909e0187f350201402927f5e5
author Christoph Hellwig <hch@lst.de> 1397592840 -0600
committer Jens Axboe <axboe@fb.com> 1397593082 -0600

blk-mq: split out tag initialization, support shared tags

Add a new blk_mq_tag_set structure that gets set up before we initialize
the queue.  A single blk_mq_tag_set structure can be shared by multiple
queues.

Signed-off-by: Christoph Hellwig <hch@lst.de>

Modular export of blk_mq_{alloc,free}_tagset added by me.

Signed-off-by: Jens Axboe <axboe@fb.com>