diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-25 17:15:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-25 17:15:46 -0700 |
| commit | 83c4087ce468601501ecde4d0ec5b2abd5f57c31 (patch) | |
| tree | 238d60de7b4f5b4b70fe851c76f04e5a5f5efaa4 /include/linux/cgroup.h | |
| parent | Merge tag 'printk-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk (diff) | |
| parent | cgroup, netclassid: add a preemption point to write_classid (diff) | |
| download | wireguard-linux-83c4087ce468601501ecde4d0ec5b2abd5f57c31.tar.xz wireguard-linux-83c4087ce468601501ecde4d0ec5b2abd5f57c31.zip | |
Merge branch 'for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
"All trivial changes - simplification, typo fix and adding
cond_resched() in a netclassid update loop"
* 'for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup, netclassid: add a preemption point to write_classid
rdmacg: fix a typo in rdmacg documentation
cgroup: Simplify cgroup_ancestor
Diffstat (limited to 'include/linux/cgroup.h')
| -rw-r--r-- | include/linux/cgroup.h | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index b8bcbdeb2eac..b622d6608605 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -569,20 +569,11 @@ static inline bool cgroup_is_descendant(struct cgroup *cgrp, static inline struct cgroup *cgroup_ancestor(struct cgroup *cgrp, int ancestor_level) { - struct cgroup *ptr; - if (cgrp->level < ancestor_level) return NULL; - - for (ptr = cgrp; - ptr && ptr->level > ancestor_level; - ptr = cgroup_parent(ptr)) - ; - - if (ptr && ptr->level == ancestor_level) - return ptr; - - return NULL; + while (cgrp && cgrp->level > ancestor_level) + cgrp = cgroup_parent(cgrp); + return cgrp; } /** |