[IA64] 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
3e10e716abf3c71bdb5d86b8f507f9e72236c9cd
or ACCESS_ONCE if not applicable.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 5246285..6bcbe21 100644 (file)
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -2293,7 +2293,7 @@ pfm_smpl_buffer_alloc(struct task_struct *task, struct file *filp, pfm_context_t
         * if ((mm->total_vm << PAGE_SHIFT) + len> task->rlim[RLIMIT_AS].rlim_cur)
         *      return -ENOMEM;
         */
-       if (size > task->signal->rlim[RLIMIT_MEMLOCK].rlim_cur)
+       if (size > task_rlimit(task, RLIMIT_MEMLOCK))
                return -ENOMEM;
 
        /*

diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index b9609c6..7c0d481 100644 (file)
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -91,7 +91,7 @@ dma_mark_clean(void *addr, size_t size)
 inline void
 ia64_set_rbs_bot (void)
 {
-       unsigned long stack_size = current->signal->rlim[RLIMIT_STACK].rlim_max & -16;
+       unsigned long stack_size = rlimit_max(RLIMIT_STACK) & -16;
 
        if (stack_size > MAX_USER_STACK_SIZE)
                stack_size = MAX_USER_STACK_SIZE;