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authorGao feng <gaofeng@cn.fujitsu.com>2012-12-01 00:21:28 +0800
committerTejun Heo <tj@kernel.org>2012-11-30 11:44:12 -0800
commit879a3d9dbbde823ac77d39131e7a287f31b8296f (patch)
tree081a858a5d37325fc3210180c34c1f79efbdfbae /kernel
parent1f869e8711d18aaf6e2979922bc9377ad394b82f (diff)
cgroup: use cgroup_addrm_files() in cgroup_clear_directory()
cgroup_clear_directory() incorrectly invokes cgroup_rm_file() on each cftset of the target subsystems, which only removes the first file of each set. This leaves dangling files after subsystems are removed from a cgroup root via remount. Use cgroup_addrm_files() to remove all files of target subsystems. tj: Move cgroup_addrm_files() prototype decl upwards next to other global declarations. Commit message updated. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cgroup.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index b186a7e25b0..e1293a9189b 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -246,6 +246,8 @@ static DEFINE_SPINLOCK(hierarchy_id_lock);
static int need_forkexit_callback __read_mostly;
static int cgroup_destroy_locked(struct cgroup *cgrp);
+static int cgroup_addrm_files(struct cgroup *cgrp, struct cgroup_subsys *subsys,
+ struct cftype cfts[], bool is_add);
#ifdef CONFIG_PROVE_LOCKING
int cgroup_lock_is_held(void)
@@ -964,7 +966,7 @@ static void cgroup_clear_directory(struct dentry *dir, bool base_files,
if (!test_bit(ss->subsys_id, &subsys_mask))
continue;
list_for_each_entry(set, &ss->cftsets, node)
- cgroup_rm_file(cgrp, set->cfts);
+ cgroup_addrm_files(cgrp, NULL, set->cfts, false);
}
if (base_files) {
while (!list_empty(&cgrp->files))