From: Andrew Morton <akpm@linux-foundation.org>

Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/kmod.c |    5 +++++
 1 file changed, 5 insertions(+)

diff -puN kernel/kmod.c~fix-kevents-childs-priority-greediness-fix kernel/kmod.c
--- a/kernel/kmod.c~fix-kevents-childs-priority-greediness-fix
+++ a/kernel/kmod.c
@@ -164,6 +164,11 @@ static int ____call_usermodehelper(void 
 
 	/* We can run anywhere, unlike our parent keventd(). */
 	set_cpus_allowed(current, CPU_MASK_ALL);
+
+	/*
+	 * Our parent is keventd, which runs with elevated scheduling priority.
+	 * Avoid propagating that into the userspace child.
+	 */
 	set_user_nice(current, 0);
 
 	retval = -EPERM;
_