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| author | Christoph Hellwig <hch@lst.de> | 2014-04-15 14:14:00 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-04-15 14:18:02 -0600 |
| commit | 24d2f90309b23f2cfe016b2aebc5f0d6e01c57fd (patch) | |
| tree | 10307829129eb8f96facbb89fefbba3c0032fb46 /block/blk-mq-tag.c | |
| parent | ed44832dea8a74f909e0187f350201402927f5e5 (diff) | |
| download | linux-24d2f90309b23f2cfe016b2aebc5f0d6e01c57fd.tar.bz2 | |
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>
Diffstat (limited to 'block/blk-mq-tag.c')
| -rw-r--r-- | block/blk-mq-tag.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index 83ae96c51a27..7a799c46c32d 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -1,25 +1,11 @@ #include <linux/kernel.h> #include <linux/module.h> -#include <linux/percpu_ida.h> #include <linux/blk-mq.h> #include "blk.h" #include "blk-mq.h" #include "blk-mq-tag.h" -/* - * Per tagged queue (tag address space) map - */ -struct blk_mq_tags { - unsigned int nr_tags; - unsigned int nr_reserved_tags; - unsigned int nr_batch_move; - unsigned int nr_max_cache; - - struct percpu_ida free_tags; - struct percpu_ida reserved_tags; -}; - void blk_mq_wait_for_tags(struct blk_mq_tags *tags) { int tag = blk_mq_get_tag(tags, __GFP_WAIT, false); |