diff options
Diffstat (limited to 'kernel/fs/btrfs/async-thread.c')
| -rw-r--r-- | kernel/fs/btrfs/async-thread.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/kernel/fs/btrfs/async-thread.c b/kernel/fs/btrfs/async-thread.c index 9aba42b78..a09264d8b 100644 --- a/kernel/fs/btrfs/async-thread.c +++ b/kernel/fs/btrfs/async-thread.c @@ -70,6 +70,20 @@ void btrfs_##name(struct work_struct *arg) \ normal_work_helper(work); \ } +bool btrfs_workqueue_normal_congested(struct btrfs_workqueue *wq) +{ + /* + * We could compare wq->normal->pending with num_online_cpus() + * to support "thresh == NO_THRESHOLD" case, but it requires + * moving up atomic_inc/dec in thresh_queue/exec_hook. Let's + * postpone it until someone needs the support of that case. + */ + if (wq->normal->thresh == NO_THRESHOLD) + return false; + + return atomic_read(&wq->normal->pending) > wq->normal->thresh * 2; +} + BTRFS_WORK_HELPER(worker_helper); BTRFS_WORK_HELPER(delalloc_helper); BTRFS_WORK_HELPER(flush_delalloc_helper); |