From ac9a8e3f0f43d20fc316162e8e5f9186d295ff49 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 8 Feb 2008 04:19:15 -0800 Subject: sys_getsid: don't use ->nsproxy directly With the new semantics of find_vpid() we don't need to play with ->nsproxy explicitely, _vxx() do the right things. Also s/tasklist/rcu/. Signed-off-by: Oleg Nesterov Cc: "Eric W. Biederman" Cc: Pavel Emelyanov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sys.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'kernel/sys.c') diff --git a/kernel/sys.c b/kernel/sys.c index ee2e78dbea6c..5a61f8071b8e 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1025,19 +1025,16 @@ asmlinkage long sys_getsid(pid_t pid) else { int retval; struct task_struct *p; - struct pid_namespace *ns; - - ns = current->nsproxy->pid_ns; - read_lock(&tasklist_lock); - p = find_task_by_pid_ns(pid, ns); + rcu_read_lock(); + p = find_task_by_vpid(pid); retval = -ESRCH; if (p) { retval = security_task_getsid(p); if (!retval) - retval = task_session_nr_ns(p, ns); + retval = task_session_vnr(p); } - read_unlock(&tasklist_lock); + rcu_read_unlock(); return retval; } } -- cgit v1.2.3-58-ga151