diff options
| author | Christoph Hellwig | 2016-09-14 16:18:53 +0200 |
|---|---|---|
| committer | Jens Axboe | 2016-09-15 16:42:03 +0200 |
| commit | bdd17e75cd97c5c39feee409890a91d0396640fe (patch) | |
| tree | a7b6b01aa305d466e83255caa08670391c294b33 /include/linux/blk-mq.h | |
| parent | blk-mq: don't redistribute hardware queues on a CPU hotplug event (diff) | |
| download | kernel-qcow2-linux-bdd17e75cd97c5c39feee409890a91d0396640fe.tar.gz kernel-qcow2-linux-bdd17e75cd97c5c39feee409890a91d0396640fe.tar.xz kernel-qcow2-linux-bdd17e75cd97c5c39feee409890a91d0396640fe.zip | |
blk-mq: only allocate a single mq_map per tag_set
The mapping is identical for all queues in a tag_set, so stop wasting
memory for building multiple. Note that for now I've kept the mq_map
pointer in the request_queue, but we'll need to investigate if we can
remove it without suffering too much from the additional pointer chasing.
The same would apply to the mq_ops pointer as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blk-mq.h')
| -rw-r--r-- | include/linux/blk-mq.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 60ef14cbcd2d..deda16a9bde4 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -67,6 +67,7 @@ struct blk_mq_hw_ctx { }; struct blk_mq_tag_set { + unsigned int *mq_map; struct blk_mq_ops *ops; unsigned int nr_hw_queues; unsigned int queue_depth; /* max hw supported */ |