The patch titled
cgroups: fix ordering of calls in cgroup_attach_proc
has been added to the -mm tree. Its filename is
cgroups-fix-ordering-of-calls-in-cgroup_attach_proc.patch
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Subject: cgroups: fix ordering of calls in cgroup_attach_proc
From: Ben Blum <bblum@xxxxxxxxxxxxxx>
awaiting useful changelog...
Signed-off-by: Ben Blum <bblum@xxxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Paul Menage <paul@xxxxxxxxxxxxxx>
Cc: Li Zefan <lizf@xxxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/cgroup.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff -puN kernel/cgroup.c~cgroups-fix-ordering-of-calls-in-cgroup_attach_proc kernel/cgroup.c
--- a/kernel/cgroup.c~cgroups-fix-ordering-of-calls-in-cgroup_attach_proc
+++ a/kernel/cgroup.c
@@ -2135,14 +2135,17 @@ int cgroup_attach_proc(struct cgroup *cg
oldcgrp = task_cgroup_from_root(tsk, root);
if (cgrp == oldcgrp)
continue;
- /* attach each task to each subsystem */
- for_each_subsys(root, ss) {
- if (ss->attach_task)
- ss->attach_task(cgrp, tsk);
- }
/* if the thread is PF_EXITING, it can just get skipped. */
retval = cgroup_task_migrate(cgrp, oldcgrp, tsk, true);
- BUG_ON(retval != 0 && retval != -ESRCH);
+ if (retval == 0) {
+ /* attach each task to each subsystem */
+ for_each_subsys(root, ss) {
+ if (ss->attach_task)
+ ss->attach_task(cgrp, tsk);
+ }
+ } else {
+ BUG_ON(retval != -ESRCH);
+ }
}
/* nothing is sensitive to fork() after this point. */
_
Patches currently in -mm which might be from bblum@xxxxxxxxxxxxxx are
cgroups-fix-ordering-of-calls-in-cgroup_attach_proc.patch
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