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Revert "cgroup: Move rcu_head up near the top of cgroup_root"

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This reverts commit 4abf184168 which is
commit a7fb0423c201ba12815877a0b5a68a6a1710b23a upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I1561314f01cdd49442735838c4aae3e3da9232c6
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman 2024-11-10 08:09:14 +00:00
parent 8cf71990ea
commit 77867ef6d4
1 changed files with 4 additions and 4 deletions
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8
include/linux/cgroup-defs.h
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@ -508,10 +508,6 @@ struct cgroup_root {
/* Unique id for this hierarchy. */
int hierarchy_id;
/* A list running through the active hierarchies */
struct list_head root_list;
struct rcu_head rcu; /* Must be near the top */
/* The root cgroup. Root is destroyed on its release. */
struct cgroup cgrp;
@ -521,6 +517,10 @@ struct cgroup_root {
/* Number of cgroups in the hierarchy, used only for /proc/cgroups */
atomic_t nr_cgrps;
/* A list running through the active hierarchies */
struct list_head root_list;
struct rcu_head rcu;
/* Hierarchy-specific flags */
unsigned int flags;