diff options
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 62 |
1 files changed, 36 insertions, 26 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 59bbfc935d87..ab3a831baa9d 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2392,11 +2392,11 @@ void blk_mq_free_rq_map(struct blk_mq_tags *tags, unsigned int flags) blk_mq_free_tags(tags, flags); } -struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set, - unsigned int hctx_idx, - unsigned int nr_tags, - unsigned int reserved_tags, - unsigned int flags) +static struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set, + unsigned int hctx_idx, + unsigned int nr_tags, + unsigned int reserved_tags, + unsigned int flags) { struct blk_mq_tags *tags; int node; @@ -2444,8 +2444,9 @@ static int blk_mq_init_request(struct blk_mq_tag_set *set, struct request *rq, return 0; } -int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags, - unsigned int hctx_idx, unsigned int depth) +static int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, + struct blk_mq_tags *tags, + unsigned int hctx_idx, unsigned int depth) { unsigned int i, j, entries_per_page, max_order = 4; size_t rq_size, left; @@ -2856,25 +2857,34 @@ static void blk_mq_init_cpu_queues(struct request_queue *q, } } -static bool __blk_mq_alloc_map_and_request(struct blk_mq_tag_set *set, - int hctx_idx) +struct blk_mq_tags *blk_mq_alloc_map_and_rqs(struct blk_mq_tag_set *set, + unsigned int hctx_idx, + unsigned int depth) { - unsigned int flags = set->flags; - int ret = 0; + struct blk_mq_tags *tags; + int ret; - set->tags[hctx_idx] = blk_mq_alloc_rq_map(set, hctx_idx, - set->queue_depth, set->reserved_tags, flags); - if (!set->tags[hctx_idx]) - return false; + tags = blk_mq_alloc_rq_map(set, hctx_idx, depth, set->reserved_tags, + set->flags); + if (!tags) + return NULL; - ret = blk_mq_alloc_rqs(set, set->tags[hctx_idx], hctx_idx, - set->queue_depth); - if (!ret) - return true; + ret = blk_mq_alloc_rqs(set, tags, hctx_idx, depth); + if (ret) { + blk_mq_free_rq_map(tags, set->flags); + return NULL; + } - blk_mq_free_rq_map(set->tags[hctx_idx], flags); - set->tags[hctx_idx] = NULL; - return false; + return tags; +} + +static bool __blk_mq_alloc_map_and_rqs(struct blk_mq_tag_set *set, + int hctx_idx) +{ + set->tags[hctx_idx] = blk_mq_alloc_map_and_rqs(set, hctx_idx, + set->queue_depth); + + return set->tags[hctx_idx]; } static void blk_mq_free_map_and_requests(struct blk_mq_tag_set *set, @@ -2919,7 +2929,7 @@ static void blk_mq_map_swqueue(struct request_queue *q) hctx_idx = set->map[j].mq_map[i]; /* unmapped hw queue can be remapped after CPU topo changed */ if (!set->tags[hctx_idx] && - !__blk_mq_alloc_map_and_request(set, hctx_idx)) { + !__blk_mq_alloc_map_and_rqs(set, hctx_idx)) { /* * If tags initialization fail for some hctx, * that hctx won't be brought online. In this @@ -3352,7 +3362,7 @@ static int __blk_mq_alloc_rq_maps(struct blk_mq_tag_set *set) int i; for (i = 0; i < set->nr_hw_queues; i++) { - if (!__blk_mq_alloc_map_and_request(set, i)) + if (!__blk_mq_alloc_map_and_rqs(set, i)) goto out_unwind; cond_resched(); } @@ -3371,7 +3381,7 @@ out_unwind: * may reduce the depth asked for, if memory is tight. set->queue_depth * will be updated to reflect the allocated depth. */ -static int blk_mq_alloc_map_and_requests(struct blk_mq_tag_set *set) +static int blk_mq_alloc_set_map_and_rqs(struct blk_mq_tag_set *set) { unsigned int depth; int err; @@ -3537,7 +3547,7 @@ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set) if (ret) goto out_free_mq_map; - ret = blk_mq_alloc_map_and_requests(set); + ret = blk_mq_alloc_set_map_and_rqs(set); if (ret) goto out_free_mq_map; |