diff options
| author | Tejun Heo <tj@kernel.org> | 2016-02-22 22:25:46 -0500 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2022-04-19 00:50:51 +0300 |
| commit | 1d1a2cde48fc75b2e8865d3a141f9a0d4465d23a (patch) | |
| tree | 764784517c81c654b3810d5db36a9f394c67d840 | |
| parent | ef1feb8e5a0922fbb6afd79c1eaef835e7991825 (diff) | |
Revert "cgroup: add cgroup_subsys->css_e_css_changed()"
This reverts commit 56c807ba4e91f0980567b6a69de239677879b17f.
cgroup_subsys->css_e_css_changed() was supposed to be used by cgroup
writeback support; however, the change to per-inode cgroup association
made it unnecessary and the callback doesn't have any user. Remove
it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
| -rw-r--r-- | include/linux/cgroup-defs.h | 1 | ||||
| -rw-r--r-- | kernel/cgroup.c | 18 |
2 files changed, 0 insertions, 19 deletions
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h index 21be477dfc1b..fa7db6380048 100644 --- a/include/linux/cgroup-defs.h +++ b/include/linux/cgroup-defs.h @@ -437,7 +437,6 @@ struct cgroup_subsys { void (*css_released)(struct cgroup_subsys_state *css); void (*css_free)(struct cgroup_subsys_state *css); void (*css_reset)(struct cgroup_subsys_state *css); - void (*css_e_css_changed)(struct cgroup_subsys_state *css); int (*can_attach)(struct cgroup_taskset *tset); void (*cancel_attach)(struct cgroup_taskset *tset); diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 52ccf1f1df6c..5316f088a2bb 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -3239,24 +3239,6 @@ static ssize_t cgroup_subtree_control_write(struct kernfs_open_file *of, } } - /* - * The effective csses of all the descendants (excluding @cgrp) may - * have changed. Subsystems can optionally subscribe to this event - * by implementing ->css_e_css_changed() which is invoked if any of - * the effective csses seen from the css's cgroup may have changed. - */ - for_each_subsys(ss, ssid) { - struct cgroup_subsys_state *this_css = cgroup_css(cgrp, ss); - struct cgroup_subsys_state *css; - - if (!ss->css_e_css_changed || !this_css) - continue; - - css_for_each_descendant_pre(css, this_css) - if (css != this_css) - ss->css_e_css_changed(css); - } - kernfs_activate(cgrp->kn); ret = 0; out_unlock: |