IB/qib: Convert qib_user_sdma_pin_pages() to use get_user_pages_fast()

[~andy/linux] / drivers / infiniband / hw / qib / qib_user_sdma.c

diff --git a/drivers/infiniband/hw/qib/qib_user_sdma.c b/drivers/infiniband/hw/qib/qib_user_sdma.c
index d0a0ea0c14d6a965afe2bcf8d359052fdb946e26..165aee2ca8a0c38dfc1e00b1965172acf4f30193 100644 (file)
--- a/drivers/infiniband/hw/qib/qib_user_sdma.c
+++ b/drivers/infiniband/hw/qib/qib_user_sdma.c
@@ -594,8 +594,7 @@ static int qib_user_sdma_pin_pages(const struct qib_devdata *dd,
                else
                        j = npages;
 
-               ret = get_user_pages(current, current->mm, addr,
-                            j, 0, 1, pages, NULL);
+               ret = get_user_pages_fast(addr, j, 0, pages);
                if (ret != j) {
                        i = 0;
                        j = ret;
@@ -1294,11 +1293,8 @@ int qib_user_sdma_writev(struct qib_ctxtdata *rcd,
                int mxp = 8;
                int ndesc = 0;
 
-               down_write(&current->mm->mmap_sem);
                ret = qib_user_sdma_queue_pkts(dd, ppd, pq,
                                iov, dim, &list, &mxp, &ndesc);
-               up_write(&current->mm->mmap_sem);
-
                if (ret < 0)
                        goto done_unlock;
                else {