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| author | Mark Brown <broonie@kernel.org> | 2017-01-10 16:39:52 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-01-10 16:39:52 +0000 |
| commit | 9c1852b459f04f6309e40d1d167512b0a5598529 (patch) | |
| tree | a74526f1fe3f9826b81327f0b9ba9b98a543f87c /fs/btrfs/async-thread.c | |
| parent | 9b41da80e09128574f09bed8dc5a5fc6f72a8239 (diff) | |
| parent | 7ce7d89f48834cefece7804d38fc5d85382edf77 (diff) | |
Merge tag 'v4.10-rc1' into asoc-samsung
Linux 4.10-rc1
Diffstat (limited to 'fs/btrfs/async-thread.c')
| -rw-r--r-- | fs/btrfs/async-thread.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c index e0f071f6b5a7..63d197724519 100644 --- a/fs/btrfs/async-thread.c +++ b/fs/btrfs/async-thread.c @@ -86,6 +86,20 @@ btrfs_work_owner(struct btrfs_work *work) return work->wq->fs_info; } +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); |