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authorJens Axboe <axboe@kernel.dk>2021-11-13 14:03:26 -0700
committerJens Axboe <axboe@kernel.dk>2021-11-29 06:38:35 -0700
commit48b5c1fbcd8c5bc6b91a56399a5257b801391dd8 (patch)
treeca7326ec1b162e4e8cc3701ea620b6b13012798b /block/blk-sysfs.c
parent25c4b5e058578066db56d757ad3a7adeaff35856 (diff)
block: only allocate poll_stats if there's a user of them
This is essentially never used, yet it's about 1/3rd of the total queue size. Allocate it when needed, and don't embed it in the queue. Kill the queue flag for this while at it, since we can just check the assigned pointer now. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> 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.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index cd75b0f73dc6..c079be1c58a3 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -785,11 +785,12 @@ static void blk_release_queue(struct kobject *kobj)
might_sleep();
- if (test_bit(QUEUE_FLAG_POLL_STATS, &q->queue_flags))
+ if (q->poll_stat)
blk_stat_remove_callback(q, q->poll_cb);
blk_stat_free_callback(q->poll_cb);
blk_free_queue_stats(q->stats);
+ kfree(q->poll_stat);
blk_exit_queue(q);