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, 1 deletions

diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index 6f7c096abf13..4f906f0614f0 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -136,7 +136,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
         down_write(&current->mm->mmap_sem);
 
         locked     = npages + current->mm->locked_vm;
-        lock_limit = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur >> PAGE_SHIFT;
+        lock_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
 
         if ((locked > lock_limit) && !capable(CAP_IPC_LOCK)) {
                 ret = -ENOMEM;