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authorRafael J. Wysocki <rjw@sisk.pl>2012-07-18 23:58:24 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2012-07-18 23:58:24 +0200
commit823d93640927d739f7c918b73fe5ec494fb27e17 (patch)
treedea028ddd214541b76c1c26f5f21ddc46157e67e /kernel/cgroup.c
parent7664e969359917ba3212c5d6efdec494eaf8586e (diff)
parentd9914cf66181b8aa0929775f5c6f675c6ebc3eb5 (diff)
downloadlinux-linaro-stable-823d93640927d739f7c918b73fe5ec494fb27e17.tar.gz
Merge branch 'fixes' into pm-sleep
The 'fixes' branch contains material the next commit depends on.
Diffstat (limited to 'kernel/cgroup.c')
-rw-r--r--kernel/cgroup.c23
1 files changed, 8 insertions, 15 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 2097684cf194..b303dfc7dce0 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -901,13 +901,10 @@ static void cgroup_diput(struct dentry *dentry, struct inode *inode)
mutex_unlock(&cgroup_mutex);
/*
- * We want to drop the active superblock reference from the
- * cgroup creation after all the dentry refs are gone -
- * kill_sb gets mighty unhappy otherwise. Mark
- * dentry->d_fsdata with cgroup_diput() to tell
- * cgroup_d_release() to call deactivate_super().
+ * Drop the active superblock reference that we took when we
+ * created the cgroup
*/
- dentry->d_fsdata = cgroup_diput;
+ deactivate_super(cgrp->root->sb);
/*
* if we're getting rid of the cgroup, refcount should ensure
@@ -933,13 +930,6 @@ static int cgroup_delete(const struct dentry *d)
return 1;
}
-static void cgroup_d_release(struct dentry *dentry)
-{
- /* did cgroup_diput() tell me to deactivate super? */
- if (dentry->d_fsdata == cgroup_diput)
- deactivate_super(dentry->d_sb);
-}
-
static void remove_dir(struct dentry *d)
{
struct dentry *parent = dget(d->d_parent);
@@ -1547,7 +1537,6 @@ static int cgroup_get_rootdir(struct super_block *sb)
static const struct dentry_operations cgroup_dops = {
.d_iput = cgroup_diput,
.d_delete = cgroup_delete,
- .d_release = cgroup_d_release,
};
struct inode *inode =
@@ -3894,8 +3883,12 @@ static void css_dput_fn(struct work_struct *work)
{
struct cgroup_subsys_state *css =
container_of(work, struct cgroup_subsys_state, dput_work);
+ struct dentry *dentry = css->cgroup->dentry;
+ struct super_block *sb = dentry->d_sb;
- dput(css->cgroup->dentry);
+ atomic_inc(&sb->s_active);
+ dput(dentry);
+ deactivate_super(sb);
}
static void init_cgroup_css(struct cgroup_subsys_state *css,