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| author | Gao feng <gaofeng@cn.fujitsu.com> | 2012-12-01 00:21:28 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2012-11-30 11:44:12 -0800 |
| commit | 879a3d9dbbde823ac77d39131e7a287f31b8296f (patch) | |
| tree | 081a858a5d37325fc3210180c34c1f79efbdfbae | |
| parent | 1f869e8711d18aaf6e2979922bc9377ad394b82f (diff) | |
| download | linux-879a3d9dbbde823ac77d39131e7a287f31b8296f.tar.bz2 | |
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>
| -rw-r--r-- | kernel/cgroup.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index b186a7e25b0a..e1293a9189b6 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)) |