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 bd786b7bd30b1256f523a89357e52d12f2a4266c..3b19c16a9e45783c907359af11f68bb91c08997c 100644 (file)
--- a/drivers/infiniband/hw/hfi1/file_ops.c
+++ b/drivers/infiniband/hw/hfi1/file_ops.c
@@ -92,7 +92,7 @@ static unsigned int poll_next(struct file *, struct poll_table_struct *);
 static int user_event_ack(struct hfi1_ctxtdata *, int, unsigned long);
 static int set_ctxt_pkey(struct hfi1_ctxtdata *, unsigned, u16);
 static int manage_rcvq(struct hfi1_ctxtdata *, unsigned, int);
-static int vma_fault(struct vm_area_struct *, struct vm_fault *);
+static int vma_fault(struct vm_fault *);
 static long hfi1_file_ioctl(struct file *fp, unsigned int cmd,
                            unsigned long arg);
 
@@ -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;
@@ -695,7 +695,7 @@ done:
  * Local (non-chip) user memory is not mapped right away but as it is
  * accessed by the user-level code.
  */
-static int vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int vma_fault(struct vm_fault *vmf)
 {
        struct page *page;