diff options
| author | Ming Lei <ming.lei@redhat.com> | 2023-11-17 05:35:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-20 19:00:21 +0300 |
| commit | 94070fd6689ec0e01b7d2133a44e528b9cffa053 (patch) | |
| tree | 8d237cc3cb0afcc15cca37e6a3240d3c4205f550 /block | |
| parent | e52d0eb48efde4939686360fc167ce0bf3b488f4 (diff) | |
| download | linux-94070fd6689ec0e01b7d2133a44e528b9cffa053.tar.xz | |
blk-cgroup: bypass blkcg_deactivate_policy after destroying
[ Upstream commit e63a57303599b17290cd8bc48e6f20b24289a8bc ]
blkcg_deactivate_policy() can be called after blkg_destroy_all()
returns, and it isn't necessary since blkg_destroy_all has covered
policy deactivation.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20231117023527.3188627-4-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-cgroup.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 60f366f98fa2..1b7fd1fc2f33 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -462,6 +462,7 @@ static void blkg_destroy_all(struct gendisk *disk) struct request_queue *q = disk->queue; struct blkcg_gq *blkg, *n; int count = BLKG_DESTROY_BATCH_SIZE; + int i; restart: spin_lock_irq(&q->queue_lock); @@ -487,6 +488,18 @@ restart: } } + /* + * Mark policy deactivated since policy offline has been done, and + * the free is scheduled, so future blkcg_deactivate_policy() can + * be bypassed + */ + for (i = 0; i < BLKCG_MAX_POLS; i++) { + struct blkcg_policy *pol = blkcg_policy[i]; + + if (pol) + __clear_bit(pol->plid, q->blkcg_pols); + } + q->root_blkg = NULL; spin_unlock_irq(&q->queue_lock); } |