The patch titled
cgroups: use task_lock() for access tsk->cgroups safe in cgroup_clone()
has been removed from the -mm tree. Its filename was
cgroups-use-task_lock-for-access-tsk-cgroups-safe-in-cgroup_clone.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: cgroups: use task_lock() for access tsk->cgroups safe in cgroup_clone()
From: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Use task_lock() protect tsk->cgroups and get_css_set(tsk->cgroups).
Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Acked-by: Paul Menage <menage@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/cgroup.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN kernel/cgroup.c~cgroups-use-task_lock-for-access-tsk-cgroups-safe-in-cgroup_clone kernel/cgroup.c
--- a/kernel/cgroup.c~cgroups-use-task_lock-for-access-tsk-cgroups-safe-in-cgroup_clone
+++ a/kernel/cgroup.c
@@ -2903,6 +2903,7 @@ int cgroup_clone(struct task_struct *tsk
mutex_unlock(&cgroup_mutex);
return 0;
}
+ task_lock(tsk);
cg = tsk->cgroups;
parent = task_cgroup(tsk, subsys->subsys_id);
@@ -2915,6 +2916,7 @@ int cgroup_clone(struct task_struct *tsk
/* Keep the cgroup alive */
get_css_set(cg);
+ task_unlock(tsk);
mutex_unlock(&cgroup_mutex);
/* Now do the VFS work to create a cgroup */
_
Patches currently in -mm which might be from laijs@xxxxxxxxxxxxxx are
origin.patch
linux-next.patch
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