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authorJiri Slaby <jslaby@suse.cz>2010-03-05 13:42:54 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-06 11:26:33 -0800
commit78d7d407b62a021e6d2e8dc24c0b90e390ab58a1 (patch)
tree8c1074b84db4b977bad6802a3701e0113c0a7739 /kernel/sys.c
parentd4bb527438b4181cd3c564ae04dd344c381283a1 (diff)
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/sys.c')
-rw-r--r--kernel/sys.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index 877fe4f8e05..9814e43fb23 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -571,8 +571,7 @@ static int set_user(struct cred *new)
if (!new_user)
return -EAGAIN;
- if (atomic_read(&new_user->processes) >=
- current->signal->rlim[RLIMIT_NPROC].rlim_cur &&
+ if (atomic_read(&new_user->processes) >= rlimit(RLIMIT_NPROC) &&
new_user != INIT_USER) {
free_uid(new_user);
return -EAGAIN;