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Merge branch 'for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

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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
This commit is contained in:
Linus Torvalds 2018-10-25 17:15:46 -07:00
commit 83c4087ce4
3 changed files with 5 additions and 13 deletions
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2
Documentation/cgroup-v1/rdma.txt
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@ -27,7 +27,7 @@ cgroup.
Currently user space applications can easily take away all the rdma verb
specific resources such as AH, CQ, QP, MR etc. Due to which other applications
in other cgroup or kernel space ULPs may not even get chance to allocate any
rdma resources. This can leads to service unavailability.
rdma resources. This can lead to service unavailability.
Therefore RDMA controller is needed through which resource consumption
of processes can be limited. Through this controller different rdma

15
include/linux/cgroup.h
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@ -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;
}
/**

1
net/core/netclassid_cgroup.c
View File

@ -106,6 +106,7 @@ static int write_classid(struct cgroup_subsys_state *css, struct cftype *cft,
iterate_fd(p->files, 0, update_classid_sock,
(void *)(unsigned long)cs->classid);
task_unlock(p);
cond_resched();
}
css_task_iter_end(&it);