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pid_namespace: make freeing struct pid_namespace rcu-delayed

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makes procfs ->premission() instances safety in RCU mode independent
from vfsmount_lock.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2013-10-03 13:28:06 -04:00
parent 1dcddd4abd
commit 1adfcb03e3
2 changed files with 8 additions and 1 deletions
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include/linux/pid_namespace.h
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@@ -23,6 +23,7 @@ struct bsd_acct_struct;
struct pid_namespace {
struct kref kref;
struct pidmap pidmap[PIDMAP_ENTRIES];
struct rcu_head rcu;
int last_pid;
unsigned int nr_hashed;
struct task_struct *child_reaper;