diff options
Diffstat (limited to 'block/blk-mq-tag.h')
| -rw-r--r-- | block/blk-mq-tag.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h index 75893a34237d..9eb2cf4f01cb 100644 --- a/block/blk-mq-tag.h +++ b/block/blk-mq-tag.h @@ -89,4 +89,16 @@ static inline void blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx) __blk_mq_tag_idle(hctx); } +/* + * This helper should only be used for flush request to share tag + * with the request cloned from, and both the two requests can't be + * in flight at the same time. The caller has to make sure the tag + * can't be freed. + */ +static inline void blk_mq_tag_set_rq(struct blk_mq_hw_ctx *hctx, + unsigned int tag, struct request *rq) +{ + hctx->tags->rqs[tag] = rq; +} + #endif |