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Merge tag 'cgroup-for-6.6-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

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Pull cgroup fixes from Tejun Heo:

 - In cgroup1, the `tasks` file could have duplicate pids which can
   trigger a warning in seq_file. Fix it by removing duplicate items
   after sorting

 - Comment update

* tag 'cgroup-for-6.6-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: Fix incorrect css_set_rwsem reference in comment
  cgroup: Remove duplicates in cgroup v1 tasks file
This commit is contained in:
Linus Torvalds
2023-10-12 17:30:35 -07:00
parent e5e1170364 13cc9ee8f8
commit 20f4757fa5
2 changed files with 3 additions and 4 deletions
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5
kernel/cgroup/cgroup-v1.c
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@@ -360,10 +360,9 @@ static int pidlist_array_load(struct cgroup *cgrp, enum cgroup_filetype type,
}
css_task_iter_end(&it);
length = n;
/* now sort & (if procs) strip out duplicates */
/* now sort & strip out duplicates (tgids or recycled thread PIDs) */
sort(array, length, sizeof(pid_t), cmppid, NULL);
if (type == CGROUP_FILE_PROCS)
length = pidlist_uniq(array, length);
length = pidlist_uniq(array, length);
l = cgroup_pidlist_find_create(cgrp, type);
if (!l) {