korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-25 05:04:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Browse Source 
Pull cgroup fix from Tejun Heo:
 "Unfortunately, the commit to fix the cgroup mount race in the previous
  pull request can lead to hangs.

  The original bug has been around for a while and isn't too likely to
  be triggered in usual use cases. Revert the commit for now"

* 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  Revert "cgroup: avoid attaching a cgroup root to two different superblocks"
This commit is contained in:
Linus Torvalds 2017-04-16 11:48:10 -07:00
commit 11c994d9a5
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/cgroup/cgroup-v1.c
View File

@ -1146,7 +1146,7 @@ struct dentry *cgroup1_mount(struct file_system_type *fs_type, int flags,
* path is super cold. Let's just sleep a bit and retry. * path is super cold. Let's just sleep a bit and retry.
*/ */
pinned_sb = kernfs_pin_sb(root->kf_root, NULL); pinned_sb = kernfs_pin_sb(root->kf_root, NULL);
if (IS_ERR_OR_NULL(pinned_sb) || if (IS_ERR(pinned_sb) ||
!percpu_ref_tryget_live(&root->cgrp.self.refcnt)) { !percpu_ref_tryget_live(&root->cgrp.self.refcnt)) {
mutex_unlock(&cgroup_mutex); mutex_unlock(&cgroup_mutex);
if (!IS_ERR_OR_NULL(pinned_sb)) if (!IS_ERR_OR_NULL(pinned_sb))