2021-09-13 15:21:41

by John Garry

Subject: [PATCH RESEND v3 07/13] blk-mq: Pass driver tags to blk_mq_clear_rq_mapping()

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 <[email protected]>
---
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 47d6ab725bcc..4bae8afdfbe1 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2302,10 +2302,9 @@ 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)
+static 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;

@@ -2314,7 +2313,7 @@ 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;

@@ -2338,8 +2337,11 @@ 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;

@@ -2353,7 +2355,7 @@ 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

2021-09-14 05:48:44

by Hannes Reinecke

Subject: Re: [PATCH RESEND v3 07/13] blk-mq: Pass driver tags to blk_mq_clear_rq_mapping()

On 9/13/21 5:12 PM, John Garry wrote:
> 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 <[email protected]>
> ---
> block/blk-mq.c | 12 +++++++-----
> 1 file changed, 7 insertions(+), 5 deletions(-)
>
Reviewed-by: Hannes Reinecke <[email protected]>

Cheers,

Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
[email protected] +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
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