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wait_for_helper: remove unneeded do_sigaction()

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allow_signal(SIGCHLD) does all necessary job, no need to call do_sigaction()
prior to.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2007-05-09 02:34:36 -07:00 committed by Linus Torvalds
parent b8a124da92
commit 90cce03d9b
1 changed files with 0 additions and 5 deletions
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5
kernel/kmod.c
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@ -185,14 +185,9 @@ static int wait_for_helper(void *data)
{
struct subprocess_info *sub_info = data;
pid_t pid;
struct k_sigaction sa;
/* Install a handler: if SIGCLD isn't handled sys_wait4 won't
* populate the status, but will return -ECHILD. */
sa.sa.sa_handler = SIG_IGN;
sa.sa.sa_flags = 0;
siginitset(&sa.sa.sa_mask, sigmask(SIGCHLD));
do_sigaction(SIGCHLD, &sa, NULL);
allow_signal(SIGCHLD);
pid = kernel_thread(____call_usermodehelper, sub_info, SIGCHLD);