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| author |   Tejun Heo <tj@kernel.org> | 2016-02-22 22:25:46 -0500 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-02-22 22:25:46 -0500 |
| commit | 5eb385cc5ae1b31fbcdd727854a00c5a083f6b9b (patch) | |
| tree | 21604a7113399dd392cb6be63205007eb21a2b45 /kernel/cgroup.c | |
| parent | cgroup: fix error return value of cgroup_addrm_files() (diff) | |
| download | linux-dev-5eb385cc5ae1b31fbcdd727854a00c5a083f6b9b.tar.xz linux-dev-5eb385cc5ae1b31fbcdd727854a00c5a083f6b9b.zip | |
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>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 68b032df77f5..7727b6e43e10 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -3127,24 +3127,6 @@ 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: |