mm: add new mmgrab() helper

[mirror_ubuntu-bionic-kernel.git] / drivers / infiniband / hw / hfi1 / file_ops.c

diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c
index f46033984d077e0eda4fd8c63a39b4b33a93b4ca..3b19c16a9e45783c907359af11f68bb91c08997c 100644 (file)
--- a/drivers/infiniband/hw/hfi1/file_ops.c
+++ b/drivers/infiniband/hw/hfi1/file_ops.c
@@ -185,7 +185,7 @@ static int hfi1_file_open(struct inode *inode, struct file *fp)
        if (fd) {
                fd->rec_cpu_num = -1; /* no cpu affinity by default */
                fd->mm = current->mm;
-               atomic_inc(&fd->mm->mm_count);
+               mmgrab(fd->mm);
                fp->private_data = fd;
        } else {
                fp->private_data = NULL;