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authorJens Axboe <axboe@kernel.dk>2018-11-15 22:22:51 +0300
committerJens Axboe <axboe@kernel.dk>2018-11-16 18:34:06 +0300
commit344e9ffcbd1898e1dc04085564a6e05c30ea8199 (patch)
treeba71320bc66d1158790acf1cdeedd21d2da9dead /block/blk-sysfs.c
parentdabcefab45d36ecb5a22f16577bb0f298876a22d (diff)
downloadlinux-344e9ffcbd1898e1dc04085564a6e05c30ea8199.tar.xz
block: add queue_is_mq() helper
Various spots check for q->mq_ops being non-NULL, but provide a helper to do this instead. Where the ->mq_ops != NULL check is redundant, remove it. Since mq == rq-based now that legacy is gone, get rid of the queue_is_rq_based() and just use queue_is_mq() everywhere. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-sysfs.c')
-rw-r--r--block/blk-sysfs.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 1e370207a20e..80eef48fddc8 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -68,7 +68,7 @@ queue_requests_store(struct request_queue *q, const char *page, size_t count)
unsigned long nr;
int ret, err;
- if (!q->mq_ops)
+ if (!queue_is_mq(q))
return -EINVAL;
ret = queue_var_store(&nr, page, count);
@@ -835,12 +835,12 @@ static void __blk_release_queue(struct work_struct *work)
blk_queue_free_zone_bitmaps(q);
- if (q->mq_ops)
+ if (queue_is_mq(q))
blk_mq_release(q);
blk_trace_shutdown(q);
- if (q->mq_ops)
+ if (queue_is_mq(q))
blk_mq_debugfs_unregister(q);
bioset_exit(&q->bio_split);
@@ -914,7 +914,7 @@ int blk_register_queue(struct gendisk *disk)
goto unlock;
}
- if (q->mq_ops) {
+ if (queue_is_mq(q)) {
__blk_mq_register_dev(dev, q);
blk_mq_debugfs_register(q);
}
@@ -925,7 +925,7 @@ int blk_register_queue(struct gendisk *disk)
blk_throtl_register_queue(q);
- if ((q->mq_ops && q->elevator)) {
+ if (q->elevator) {
ret = elv_register_queue(q);
if (ret) {
mutex_unlock(&q->sysfs_lock);
@@ -974,7 +974,7 @@ void blk_unregister_queue(struct gendisk *disk)
* Remove the sysfs attributes before unregistering the queue data
* structures that can be modified through sysfs.
*/
- if (q->mq_ops)
+ if (queue_is_mq(q))
blk_mq_unregister_dev(disk_to_dev(disk), q);
mutex_unlock(&q->sysfs_lock);
@@ -983,7 +983,7 @@ void blk_unregister_queue(struct gendisk *disk)
blk_trace_remove_sysfs(disk_to_dev(disk));
mutex_lock(&q->sysfs_lock);
- if (q->mq_ops && q->elevator)
+ if (q->elevator)
elv_unregister_queue(q);
mutex_unlock(&q->sysfs_lock);