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authorJens Axboe <axboe@fb.com>2015-01-07 20:44:04 +0300
committerJens Axboe <axboe@fb.com>2015-01-07 20:44:04 +0300
commit17ded320706c6316376059cfbe9dccab32c62b42 (patch)
tree86301826f0fe57700c97828bf9fc2657c11c0c4e /include/linux/blk-mq.h
parent35b489d32fcc37e8735f41aa794b24cf9d1e74f5 (diff)
downloadlinux-17ded320706c6316376059cfbe9dccab32c62b42.tar.xz
blk-mq: get rid of ->cmd_size in the hardware queue
We store it in the tag set, we don't need it in the hardware queue. While removing cmd_size, place ->queue_num further down to avoid a hole on 64-bit archs. It's not used in any fast paths, so we can safely move it. Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blk-mq.h')
-rw-r--r--include/linux/blk-mq.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 3b43f509432c..d0de259e92b2 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -34,7 +34,6 @@ struct blk_mq_hw_ctx {
unsigned long flags; /* BLK_MQ_F_* flags */
struct request_queue *queue;
- unsigned int queue_num;
struct blk_flush_queue *fq;
void *driver_data;
@@ -54,7 +53,7 @@ struct blk_mq_hw_ctx {
unsigned long dispatched[BLK_MQ_MAX_DISPATCH_ORDER];
unsigned int numa_node;
- unsigned int cmd_size; /* per-request extra data */
+ unsigned int queue_num;
atomic_t nr_active;