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authorJeff Garzik <jeff@garzik.org>2012-07-25 23:58:48 +0400
committerJeff Garzik <jgarzik@redhat.com>2012-07-25 23:58:48 +0400
commit8407884dd9164ec18ed2afc00f56b87e36c51fcf (patch)
treeb6ea42c231d7d39f454de28a068d78ce11709770 /include/linux/cgroup.h
parentdc7f71f486f4f5fa96f6dcf86833da020cde8a11 (diff)
parentbdc0077af574800d24318b6945cf2344e8dbb050 (diff)
downloadlinux-8407884dd9164ec18ed2afc00f56b87e36c51fcf.tar.xz
Merge branch 'master' [vanilla Linus master] into libata-dev.git/upstream
Two bits were appended to the end of the bitfield list in struct scsi_device. Resolve that conflict by including both bits. Conflicts: include/scsi/scsi_device.h
Diffstat (limited to 'include/linux/cgroup.h')
-rw-r--r--include/linux/cgroup.h17
1 files changed, 2 insertions, 15 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index d3f5fba2c159..c90eaa803440 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -500,21 +500,8 @@ struct cgroup_subsys {
const char *name;
/*
- * Protects sibling/children links of cgroups in this
- * hierarchy, plus protects which hierarchy (or none) the
- * subsystem is a part of (i.e. root/sibling). To avoid
- * potential deadlocks, the following operations should not be
- * undertaken while holding any hierarchy_mutex:
- *
- * - allocating memory
- * - initiating hotplug events
- */
- struct mutex hierarchy_mutex;
- struct lock_class_key subsys_key;
-
- /*
* Link to parent, and list entry in parent's children.
- * Protected by this->hierarchy_mutex and cgroup_lock()
+ * Protected by cgroup_lock()
*/
struct cgroupfs_root *root;
struct list_head sibling;
@@ -602,7 +589,7 @@ int cgroup_attach_task_all(struct task_struct *from, struct task_struct *);
* the lifetime of cgroup_subsys_state is subsys's matter.
*
* Looking up and scanning function should be called under rcu_read_lock().
- * Taking cgroup_mutex()/hierarchy_mutex() is not necessary for following calls.
+ * Taking cgroup_mutex is not necessary for following calls.
* But the css returned by this routine can be "not populated yet" or "being
* destroyed". The caller should check css and cgroup's status.
*/