Commit 352526f4 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 

Pull cgroup fixes from Tejun Heo:
 "Three cgroup fixes.  Nothing critical:

   - the pids controller could trigger suspicious RCU warning
     spuriously. Fixed.

   - in the debug controller, %p -> %pK to protect kernel pointer
     from getting exposed.

   - documentation formatting fix"

* 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroups: censor kernel pointer in debug files
  cgroup/pids: remove spurious suspicious RCU usage warning
  cgroup: Fix indenting in PID controller documentation
parents 6517569d b6a6759d

Documentation/cgroup-v2.txt

+6 −5
Original line number Diff line number Diff line
@@ -1142,8 +1142,8 @@ used by the kernel. 


  pids.max



 A read-write single value file which exists on non-root cgroups.  The

 default is "max".

	A read-write single value file which exists on non-root

	cgroups.  The default is "max".



	Hard limit of number of processes.
@@ -1151,7 +1151,8 @@ used by the kernel. 


	A read-only single value file which exists on all cgroups.



 The number of processes currently in the cgroup and its descendants.

	The number of processes currently in the cgroup and its

	descendants.



Organisational operations are not blocked by cgroup policies, so it is

possible to have pids.current > pids.max.  This can be done by either

kernel/cgroup/cgroup-v1.c

+1 −1
Original line number Diff line number Diff line
@@ -1329,7 +1329,7 @@ static int cgroup_css_links_read(struct seq_file *seq, void *v) 
		struct task_struct *task;

		int count = 0;



		seq_printf(seq, "css_set %p\n", cset);

		seq_printf(seq, "css_set %pK\n", cset);



		list_for_each_entry(task, &cset->tasks, cg_list) {

			if (count++ > MAX_TASKS_SHOWN_PER_CSS)

kernel/cgroup/pids.c

+1 −1
Original line number Diff line number Diff line
@@ -229,7 +229,7 @@ static int pids_can_fork(struct task_struct *task) 
		/* Only log the first time events_limit is incremented. */

		if (atomic64_inc_return(&pids->events_limit) == 1) {

			pr_info("cgroup: fork rejected by pids controller in ");

			pr_cont_cgroup_path(task_cgroup(current, pids_cgrp_id));

			pr_cont_cgroup_path(css->cgroup);

			pr_cont("\n");

		}

		cgroup_file_notify(&pids->events_file);

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