uml: simplify helper stack handling

run_helper and run_helper_thread had arguments which were the same in all
callers.  run_helper's stack_out was always NULL and run_helper_thread's
stack_order was always 0.  These are now gone, and the constants folded
into the code.

Also fixed leaks of the helper stack in the AIO and SIGIO code.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/um/drivers/slip_user.c b/arch/um/drivers/slip_user.c
index 78f0e515da8f..edc2de3ee2f4 100644
--- a/arch/um/drivers/slip_user.c
+++ b/arch/um/drivers/slip_user.c
@@ -85,7 +85,7 @@ static int slip_tramp(char **argv, int fd)
         pe_data.stdin = fd;
         pe_data.stdout = fds[1];
         pe_data.close_me = fds[0];
-        err = run_helper(slip_pre_exec, &pe_data, argv, NULL);
+        err = run_helper(slip_pre_exec, &pe_data, argv);
         if(err < 0)
                 goto out_close;
         pid = err;