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| author | Peter Zijlstra | 2022-09-09 11:08:30 +0200 |
|---|---|---|
| committer | Peter Zijlstra | 2022-09-09 11:08:30 +0200 |
| commit | 0fb7b6f9d367965a8c2497c4d437dd225193b0f6 (patch) | |
| tree | 4a6aca386addfcc06b719363ff1f990befb650d6 /kernel/cgroup | |
| parent | 7e18e42e4b280c85b76967a9106a13ca61c16179 (diff) | |
| parent | 61742a7cd5b194d2cc52d78de8ec6967634a4cd6 (diff) | |
Merge branch 'driver-core/driver-core-next'
Pull in dependent cgroup patches
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'kernel/cgroup')
| -rw-r--r-- | kernel/cgroup/cgroup.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index e4bb5d57f4d1..718a70c01c04 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -4372,6 +4372,26 @@ void cgroup_file_notify(struct cgroup_file *cfile) } /** + * cgroup_file_show - show or hide a hidden cgroup file + * @cfile: target cgroup_file obtained by setting cftype->file_offset + * @show: whether to show or hide + */ +void cgroup_file_show(struct cgroup_file *cfile, bool show) +{ + struct kernfs_node *kn; + + spin_lock_irq(&cgroup_file_kn_lock); + kn = cfile->kn; + kernfs_get(kn); + spin_unlock_irq(&cgroup_file_kn_lock); + + if (kn) + kernfs_show(kn, show); + + kernfs_put(kn); +} + +/** * css_next_child - find the next child of a given css * @pos: the current position (%NULL to initiate traversal) * @parent: css whose children to walk |