fs: use rlimit helpers

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: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 18e20feee251..aa8637b81028 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -273,7 +273,7 @@ static inline void task_sig(struct seq_file *m, struct task_struct *p)
                 rcu_read_lock();  /* FIXME: is this correct? */
                 qsize = atomic_read(&__task_cred(p)->user->sigpending);
                 rcu_read_unlock();
-                qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
+                qlim = task_rlimit(p, RLIMIT_SIGPENDING);
                 unlock_task_sighand(p, &flags);
         }
 
@@ -420,7 +420,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
                 cutime = sig->cutime;
                 cstime = sig->cstime;
                 cgtime = sig->cgtime;
-                rsslim = sig->rlim[RLIMIT_RSS].rlim_cur;
+                rsslim = ACCESS_ONCE(sig->rlim[RLIMIT_RSS].rlim_cur);
 
                 /* add up live thread stats at the group level */
                 if (whole) {