[PATCH] Fix nice range for RLIMIT NICE

Matt Mackall
2005-08-15T20:13:26Z

Looks like I let this one slip through the cracks:

Make RLIMIT_NICE ranges consistent with getpriority(2)

As suggested by Michael Kerrisk <mtk-manpages@gmx.net>, make
RLIMIT_NICE consistent with getpriority before it becomes available in
released glibc.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Chris Wright <chrisw@osdl.org>

Index: lhg/kernel/sched.c
===================================================================
--- lhg.orig/kernel/sched.c 2005-08-15 13:03:05.000000000 -0700
+++ lhg/kernel/sched.c 2005-08-15 13:09:21.000000000 -0700
@@ -3378,8 +3378,8 @@ EXPORT_SYMBOL(set_user_nice);
*/
int can_nice(const task_t *p, const int nice)
{
- /* convert nice value [19,-20] to rlimit style value [0,39] */
- int nice_rlim = 19 - nice;
+ /* convert nice value [19,-20] to rlimit style value [1,40] */
+ int nice_rlim = 20 - nice;
return (nice_rlim <= p->signal->rlim[RLIMIT_NICE].rlim_cur ||
capable(CAP_SYS_NICE));
}

--
Mathematics is the supreme nostalgia of our time.