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authorAl Viro2013-10-03 13:28:06 -0400
committerAl Viro2013-10-24 23:43:29 -0400
commit1adfcb03e31ba0d6be5fddf773da4357d0792cbb (patch)
treec5c89b58403938c263e81c115fc864ad9aabc782 /include
parent1dcddd4abd2c6df7f28928ad5cafa4a1cd20030b (diff)
pid_namespace: make freeing struct pid_namespace rcu-delayed
makes procfs ->premission() instances safety in RCU mode independent from vfsmount_lock. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/linux/pid_namespace.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index e2772666f004..7246ef3d4455 100644
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -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;