From: Jeffle Xu <jefflexu@linux.alibaba.com> To: snitzer@redhat.com Cc: joseph.qi@linux.alibaba.com, dm-devel@redhat.com, linux-block@vger.kernel.org, io-uring@vger.kernel.org Subject: [PATCH v2 2/6] block: add queue_to_disk() to get gendisk from request_queue Date: Mon, 25 Jan 2021 20:13:36 +0800 [thread overview] Message-ID: <20210125121340.70459-3-jefflexu@linux.alibaba.com> (raw) In-Reply-To: <20210125121340.70459-1-jefflexu@linux.alibaba.com> Sometimes we need to get the corresponding gendisk from request_queue. It is preferred that block drivers store private data in gendisk->private_data rather than request_queue->queuedata, e.g. see: commit c4a59c4e5db3 ("dm: stop using ->queuedata"). So if only request_queue is given, we need to get its corresponding gendisk to get the private data stored in that gendisk. Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> Review-by: Mike Snitzer <snitzer@redhat.com> --- include/linux/blkdev.h | 2 ++ include/trace/events/kyber.h | 6 +++--- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f94ee3089e01..2a802e011a95 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -687,6 +687,8 @@ static inline bool blk_account_rq(struct request *rq) dma_map_page_attrs(dev, (bv)->bv_page, (bv)->bv_offset, (bv)->bv_len, \ (dir), (attrs)) +#define queue_to_disk(q) (dev_to_disk(kobj_to_dev((q)->kobj.parent))) + static inline bool queue_is_mq(struct request_queue *q) { return q->mq_ops; diff --git a/include/trace/events/kyber.h b/include/trace/events/kyber.h index c0e7d24ca256..f9802562edf6 100644 --- a/include/trace/events/kyber.h +++ b/include/trace/events/kyber.h @@ -30,7 +30,7 @@ TRACE_EVENT(kyber_latency, ), TP_fast_assign( - __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent))); + __entry->dev = disk_devt(queue_to_disk(q)); strlcpy(__entry->domain, domain, sizeof(__entry->domain)); strlcpy(__entry->type, type, sizeof(__entry->type)); __entry->percentile = percentile; @@ -59,7 +59,7 @@ TRACE_EVENT(kyber_adjust, ), TP_fast_assign( - __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent))); + __entry->dev = disk_devt(queue_to_disk(q)); strlcpy(__entry->domain, domain, sizeof(__entry->domain)); __entry->depth = depth; ), @@ -81,7 +81,7 @@ TRACE_EVENT(kyber_throttled, ), TP_fast_assign( - __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent))); + __entry->dev = disk_devt(queue_to_disk(q)); strlcpy(__entry->domain, domain, sizeof(__entry->domain)); ), -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Jeffle Xu <jefflexu@linux.alibaba.com> To: snitzer@redhat.com Cc: linux-block@vger.kernel.org, joseph.qi@linux.alibaba.com, dm-devel@redhat.com, io-uring@vger.kernel.org Subject: [dm-devel] [PATCH v2 2/6] block: add queue_to_disk() to get gendisk from request_queue Date: Mon, 25 Jan 2021 20:13:36 +0800 [thread overview] Message-ID: <20210125121340.70459-3-jefflexu@linux.alibaba.com> (raw) In-Reply-To: <20210125121340.70459-1-jefflexu@linux.alibaba.com> Sometimes we need to get the corresponding gendisk from request_queue. It is preferred that block drivers store private data in gendisk->private_data rather than request_queue->queuedata, e.g. see: commit c4a59c4e5db3 ("dm: stop using ->queuedata"). So if only request_queue is given, we need to get its corresponding gendisk to get the private data stored in that gendisk. Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> Review-by: Mike Snitzer <snitzer@redhat.com> --- include/linux/blkdev.h | 2 ++ include/trace/events/kyber.h | 6 +++--- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f94ee3089e01..2a802e011a95 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -687,6 +687,8 @@ static inline bool blk_account_rq(struct request *rq) dma_map_page_attrs(dev, (bv)->bv_page, (bv)->bv_offset, (bv)->bv_len, \ (dir), (attrs)) +#define queue_to_disk(q) (dev_to_disk(kobj_to_dev((q)->kobj.parent))) + static inline bool queue_is_mq(struct request_queue *q) { return q->mq_ops; diff --git a/include/trace/events/kyber.h b/include/trace/events/kyber.h index c0e7d24ca256..f9802562edf6 100644 --- a/include/trace/events/kyber.h +++ b/include/trace/events/kyber.h @@ -30,7 +30,7 @@ TRACE_EVENT(kyber_latency, ), TP_fast_assign( - __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent))); + __entry->dev = disk_devt(queue_to_disk(q)); strlcpy(__entry->domain, domain, sizeof(__entry->domain)); strlcpy(__entry->type, type, sizeof(__entry->type)); __entry->percentile = percentile; @@ -59,7 +59,7 @@ TRACE_EVENT(kyber_adjust, ), TP_fast_assign( - __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent))); + __entry->dev = disk_devt(queue_to_disk(q)); strlcpy(__entry->domain, domain, sizeof(__entry->domain)); __entry->depth = depth; ), @@ -81,7 +81,7 @@ TRACE_EVENT(kyber_throttled, ), TP_fast_assign( - __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent))); + __entry->dev = disk_devt(queue_to_disk(q)); strlcpy(__entry->domain, domain, sizeof(__entry->domain)); ), -- 2.27.0 -- dm-devel mailing list dm-devel@redhat.com https://www.redhat.com/mailman/listinfo/dm-devel
next prev parent reply other threads:[~2021-01-26 19:53 UTC|newest] Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-25 12:13 [PATCH v2 0/6] dm: support IO polling for bio-based dm device Jeffle Xu 2021-01-25 12:13 ` [dm-devel] " Jeffle Xu 2021-01-25 12:13 ` [PATCH v2 1/6] block: move definition of blk_qc_t to types.h Jeffle Xu 2021-01-25 12:13 ` [dm-devel] " Jeffle Xu 2021-01-25 12:13 ` Jeffle Xu [this message] 2021-01-25 12:13 ` [dm-devel] [PATCH v2 2/6] block: add queue_to_disk() to get gendisk from request_queue Jeffle Xu 2021-01-27 17:20 ` Mike Snitzer 2021-01-27 17:20 ` [dm-devel] " Mike Snitzer 2021-01-25 12:13 ` [PATCH v2 3/6] block: add iopoll method to support bio-based IO polling Jeffle Xu 2021-01-25 12:13 ` [dm-devel] " Jeffle Xu 2021-01-27 17:14 ` Mike Snitzer 2021-01-27 17:14 ` [dm-devel] " Mike Snitzer 2021-01-28 8:40 ` Christoph Hellwig 2021-01-28 8:40 ` [dm-devel] " Christoph Hellwig 2021-01-28 11:52 ` JeffleXu 2021-01-28 11:52 ` [dm-devel] " JeffleXu 2021-01-28 14:36 ` Christoph Hellwig 2021-01-28 14:36 ` [dm-devel] " Christoph Hellwig 2021-01-25 12:13 ` [PATCH v2 4/6] dm: always return BLK_QC_T_NONE for bio-based device Jeffle Xu 2021-01-25 12:13 ` [dm-devel] " Jeffle Xu 2021-01-25 12:13 ` [PATCH v2 5/6] block: add QUEUE_FLAG_POLL_CAP flag Jeffle Xu 2021-01-25 12:13 ` [dm-devel] " Jeffle Xu 2021-01-27 17:13 ` Mike Snitzer 2021-01-27 17:13 ` [dm-devel] " Mike Snitzer 2021-01-28 2:07 ` JeffleXu 2021-01-28 2:07 ` [dm-devel] " JeffleXu 2021-01-25 12:13 ` [PATCH v2 6/6] dm: support IO polling for bio-based dm device Jeffle Xu 2021-01-25 12:13 ` [dm-devel] " Jeffle Xu 2021-01-29 7:37 ` JeffleXu 2021-01-29 7:37 ` [dm-devel] " JeffleXu 2021-01-27 17:19 ` [PATCH v2 0/6] " Mike Snitzer 2021-01-27 17:19 ` [dm-devel] " Mike Snitzer 2021-01-28 3:06 ` JeffleXu 2021-01-28 3:06 ` [dm-devel] " JeffleXu 2021-01-31 16:26 ` Mike Snitzer
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