RDMA: Use rlimit helpers

Make sure compiler won't do weird things with limits by using the
rlimit helpers added in 3e10e716 ("resource: add helpers for fetching
rlimits").  E.g. fetching them twice may return 2 different values
after writable limits are implemented.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_user_pages.c b/drivers/infiniband/hw/ipath/ipath_user_pages.c
index 82878e34862..eb7d59abd12 100644
--- a/drivers/infiniband/hw/ipath/ipath_user_pages.c
+++ b/drivers/infiniband/hw/ipath/ipath_user_pages.c
@@ -59,8 +59,7 @@ static int __get_user_pages(unsigned long start_page, size_t num_pages,
         size_t got;
         int ret;
 
-        lock_limit = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur >>
-                PAGE_SHIFT;
+        lock_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
 
         if (num_pages > lock_limit) {
                 ret = -ENOMEM;