[PATCH v2 06/11] blk-mq: Pass driver tags to blk_mq_clear_rq_mapping()

John Garry
2021-08-09T14:38:01Z

Function blk_mq_clear_rq_mapping() will be used for shared sbitmap tags
in future, so pass a driver tags pointer instead of the tagset container
and HW queue index.

Signed-off-by: John Garry <john.garry@huawei.com>
---
block/blk-mq.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 42c4b8d1a570..0bb596f4d061 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2310,10 +2310,9 @@ static size_t order_to_size(unsigned int order)
}

/* called before freeing request pool in @tags */
-static void blk_mq_clear_rq_mapping(struct blk_mq_tag_set *set,
- struct blk_mq_tags *tags, unsigned int hctx_idx)
+void blk_mq_clear_rq_mapping(struct blk_mq_tags *drv_tags,
+ struct blk_mq_tags *tags)
{
- struct blk_mq_tags *drv_tags = set->tags[hctx_idx];
struct page *page;
unsigned long flags;

@@ -2322,7 +2321,7 @@ static void blk_mq_clear_rq_mapping(struct blk_mq_tag_set *set,
unsigned long end = start + order_to_size(page->private);
int i;

- for (i = 0; i < set->queue_depth; i++) {
+ for (i = 0; i < drv_tags->nr_tags; i++) {
struct request *rq = drv_tags->rqs[i];
unsigned long rq_addr = (unsigned long)rq;

@@ -2346,8 +2345,11 @@ static void blk_mq_clear_rq_mapping(struct blk_mq_tag_set *set,
void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
unsigned int hctx_idx)
{
+ struct blk_mq_tags *drv_tags;
struct page *page;

+ drv_tags = set->tags[hctx_idx];
+
if (tags->static_rqs && set->ops->exit_request) {
int i;

@@ -2361,7 +2363,7 @@ void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
}
}

- blk_mq_clear_rq_mapping(set, tags, hctx_idx);
+ blk_mq_clear_rq_mapping(drv_tags, tags);

while (!list_empty(&tags->page_list)) {
page = list_first_entry(&tags->page_list, struct page, lru);
--
2.26.2