diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2019-01-17 02:25:51 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2019-02-28 03:29:32 -0500 |
| commit | cf6299b1d00555cd10dc30d95b300d7084128a2c (patch) | |
| tree | f4cd581ee037732a736b70e1fffa220e012be512 /kernel/cgroup/cgroup.c | |
| parent | e34a98d5b226b84a3ed6da93e7a92e65cc1c81ba (diff) | |
cgroup: stash cgroup_root reference into cgroup_fs_context
Note that this reference is *NOT* contributing to refcount of
cgroup_root in question and is valid only until cgroup_do_mount()
returns.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/cgroup/cgroup.c')
| -rw-r--r-- | kernel/cgroup/cgroup.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index d0cddfbdf5cf..57f43f63363a 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -1915,8 +1915,9 @@ static void init_cgroup_housekeeping(struct cgroup *cgrp) INIT_WORK(&cgrp->release_agent_work, cgroup1_release_agent); } -void init_cgroup_root(struct cgroup_root *root, struct cgroup_fs_context *ctx) +void init_cgroup_root(struct cgroup_fs_context *ctx) { + struct cgroup_root *root = ctx->root; struct cgroup *cgrp = &root->cgrp; INIT_LIST_HEAD(&root->root_list); @@ -2098,6 +2099,7 @@ static int cgroup_get_tree(struct fs_context *fc) cgrp_dfl_visible = true; cgroup_get_live(&cgrp_dfl_root.cgrp); + ctx->root = &cgrp_dfl_root; root = cgroup_do_mount(&cgroup2_fs_type, fc->sb_flags, &cgrp_dfl_root, CGROUP2_SUPER_MAGIC, ns); @@ -5374,7 +5376,8 @@ int __init cgroup_init_early(void) struct cgroup_subsys *ss; int i; - init_cgroup_root(&cgrp_dfl_root, &ctx); + ctx.root = &cgrp_dfl_root; + init_cgroup_root(&ctx); cgrp_dfl_root.cgrp.self.flags |= CSS_NO_REF; RCU_INIT_POINTER(init_task.cgroups, &init_css_set); |