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authorJiri Slaby <jslaby@suse.cz>2010-03-05 22:42:54 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-06 20:26:33 +0100
commit78d7d407b62a021e6d2e8dc24c0b90e390ab58a1 (patch)
tree8c1074b84db4b977bad6802a3701e0113c0a7739 /kernel/sched.c
parentposix-cpu-timers: cleanup rlimits usage (diff)
downloadlinux-78d7d407b62a021e6d2e8dc24c0b90e390ab58a1.tar.xz
linux-78d7d407b62a021e6d2e8dc24c0b90e390ab58a1.zip
kernel core: use helpers for rlimits
Make sure compiler won't do weird things with limits. E.g. fetching them twice may return 2 different values after writable limits are implemented. I.e. either use rlimit helpers added in commit 3e10e716abf3 ("resource: add helpers for fetching rlimits") or ACCESS_ONCE if not applicable. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index abb36b16b93b..b47ceeec1a91 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4353,7 +4353,7 @@ int can_nice(const struct task_struct *p, const int 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 ||
+ return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
capable(CAP_SYS_NICE));
}
@@ -4530,7 +4530,7 @@ recheck:
if (!lock_task_sighand(p, &flags))
return -ESRCH;
- rlim_rtprio = p->signal->rlim[RLIMIT_RTPRIO].rlim_cur;
+ rlim_rtprio = task_rlimit(p, RLIMIT_RTPRIO);
unlock_task_sighand(p, &flags);
/* can't set/change the rt policy */