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| author | Jens Axboe <axboe@fb.com> | 2014-05-19 11:52:35 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-05-19 11:52:35 -0600 |
| commit | 39a9f97e5ea99e048c4980c23cf197f6e77995cb (patch) | |
| tree | b1f72ed1e852372b6d86b79157b09f77fabc5a20 /block/blk-mq-tag.h | |
| parent | 1429d7c9467e1e3de0b0ff91d7e4d67c1a92f8a3 (diff) | |
| parent | 0d2602ca30e410e84e8bdf05c84ed5688e0a5a44 (diff) | |
| download | linux-stable-39a9f97e5ea99e048c4980c23cf197f6e77995cb.tar.gz linux-stable-39a9f97e5ea99e048c4980c23cf197f6e77995cb.tar.bz2 linux-stable-39a9f97e5ea99e048c4980c23cf197f6e77995cb.zip | |
Merge branch 'for-3.16/blk-mq-tagging' into for-3.16/core
Signed-off-by: Jens Axboe <axboe@fb.com>
Conflicts:
block/blk-mq-tag.c
Diffstat (limited to 'block/blk-mq-tag.h')
| -rw-r--r-- | block/blk-mq-tag.h | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h index 9014269f3910..e144f68ec45f 100644 --- a/block/blk-mq-tag.h +++ b/block/blk-mq-tag.h @@ -35,6 +35,8 @@ struct blk_mq_tags { unsigned int nr_tags; unsigned int nr_reserved_tags; + atomic_t active_queues; + struct blk_mq_bitmap_tags bitmap_tags; struct blk_mq_bitmap_tags breserved_tags; @@ -46,9 +48,9 @@ struct blk_mq_tags { extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags, unsigned int reserved_tags, int node); extern void blk_mq_free_tags(struct blk_mq_tags *tags); -extern unsigned int blk_mq_get_tag(struct blk_mq_tags *tags, struct blk_mq_hw_ctx *hctx, unsigned int *last_tag, gfp_t gfp, bool reserved); -extern void blk_mq_wait_for_tags(struct blk_mq_tags *tags, struct blk_mq_hw_ctx *hctx, bool reserved); -extern void blk_mq_put_tag(struct blk_mq_tags *tags, unsigned int tag, unsigned int *last_tag); +extern unsigned int blk_mq_get_tag(struct blk_mq_hw_ctx *hctx, unsigned int *last_tag, gfp_t gfp, bool reserved); +extern void blk_mq_wait_for_tags(struct blk_mq_hw_ctx *hctx, bool reserved); +extern void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, unsigned int tag, unsigned int *last_tag); extern void blk_mq_tag_busy_iter(struct blk_mq_tags *tags, void (*fn)(void *data, unsigned long *), void *data); extern bool blk_mq_has_free_tags(struct blk_mq_tags *tags); extern ssize_t blk_mq_tag_sysfs_show(struct blk_mq_tags *tags, char *page); @@ -65,4 +67,23 @@ enum { BLK_MQ_TAG_MAX = BLK_MQ_TAG_FAIL - 1, }; +extern bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *); +extern void __blk_mq_tag_idle(struct blk_mq_hw_ctx *); + +static inline bool blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx) +{ + if (!(hctx->flags & BLK_MQ_F_TAG_SHARED)) + return false; + + return __blk_mq_tag_busy(hctx); +} + +static inline void blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx) +{ + if (!(hctx->flags & BLK_MQ_F_TAG_SHARED)) + return; + + __blk_mq_tag_idle(hctx); +} + #endif |