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| author |  Yu Kuai <yukuai3@huawei.com>
| 2024-05-09 20:11:07 +0800 |
|---|---|---|
| committer |  Jens Axboe <axboe@kernel.dk>
| 2024-05-09 09:44:56 -0600 |
| commit | a3166c51702bb00b8f8b84022090cbab8f37be1a (patch) | |
| tree | dc0f7d08dc8dc0438a578f96809658ff97016c5f /block/blk-cgroup.c | |
| parent | blk-throttle: remove CONFIG_BLK_DEV_THROTTLING_LOW (diff) | |
| download | linux-a3166c51702bb00b8f8b84022090cbab8f37be1a.tar.gz linux-a3166c51702bb00b8f8b84022090cbab8f37be1a.tar.bz2 linux-a3166c51702bb00b8f8b84022090cbab8f37be1a.zip | |
blk-throttle: delay initialization until configuration
Other cgroup policy like bfq, iocost are lazy-initialized when they are
configured for the first time for the device, but blk-throttle is
initialized unconditionally from blkcg_init_disk().
Delay initialization of blk-throttle as well, to save some cpu and
memory overhead if it's not configured.
Noted that once it's initialized, it can't be destroyed until disk
removal, even if it's disabled.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240509121107.3195568-3-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 8598e4591e79..5e1f10525677 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1440,14 +1440,8 @@ int blkcg_init_disk(struct gendisk *disk) if (ret) goto err_destroy_all; - ret = blk_throtl_init(disk); - if (ret) - goto err_ioprio_exit; - return 0; -err_ioprio_exit: - blk_ioprio_exit(disk); err_destroy_all: blkg_destroy_all(disk); return ret; |