diff options
| author | Omar Sandoval <osandov@fb.com> | 2016-09-17 08:38:44 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-09-17 08:38:44 -0600 |
| commit | 88459642cba452630326b9cab1c651e09577d4e4 (patch) | |
| tree | cd7ecd917b294a92ff827b0e7dab526f0069547f /include/linux/blk-mq.h | |
| parent | 703fd1c0f177219e3a84e6c095c31dc566514d81 (diff) | |
blk-mq: abstract tag allocation out into sbitmap library
This is a generally useful data structure, so make it available to
anyone else who might want to use it. It's also a nice cleanup
separating the allocation logic from the rest of the tag handling logic.
The code is behind a new Kconfig option, CONFIG_SBITMAP, which is only
selected by CONFIG_BLOCK for now.
This should be a complete noop functionality-wise.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blk-mq.h')
| -rw-r--r-- | include/linux/blk-mq.h | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 60ef14cbcd2d..2575779cf13f 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -2,6 +2,7 @@ #define BLK_MQ_H #include <linux/blkdev.h> +#include <linux/sbitmap.h> struct blk_mq_tags; struct blk_flush_queue; @@ -12,12 +13,6 @@ struct blk_mq_cpu_notifier { int (*notify)(void *data, unsigned long action, unsigned int cpu); }; -struct blk_mq_ctxmap { - unsigned int size; - unsigned int bits_per_word; - struct blk_align_bitmap *map; -}; - struct blk_mq_hw_ctx { struct { spinlock_t lock; @@ -37,7 +32,7 @@ struct blk_mq_hw_ctx { void *driver_data; - struct blk_mq_ctxmap ctx_map; + struct sbitmap ctx_map; struct blk_mq_ctx **ctxs; unsigned int nr_ctx; |