RDS: use get_user_pages_fast()

Use the new function that is simpler and faster.

Signed-off-by: Andy Grover <andy.grover@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/rds/info.c b/net/rds/info.c
index 1d88553..62aeef3 100644 (file)
--- a/net/rds/info.c
+++ b/net/rds/info.c
@@ -188,10 +188,7 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
                ret = -ENOMEM;
                goto out;
        }
-       down_read(&current->mm->mmap_sem);
-       ret = get_user_pages(current, current->mm, start, nr_pages, 1, 0,
-                            pages, NULL);
-       up_read(&current->mm->mmap_sem);
+       ret = get_user_pages_fast(start, nr_pages, 1, pages);
        if (ret != nr_pages) {
                if (ret > 0)
                        nr_pages = ret;

diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index e390dc7..8dc83d2 100644 (file)
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -150,10 +150,7 @@ static int rds_pin_pages(unsigned long user_addr, unsigned int nr_pages,
 {
        int ret;
 
-       down_read(&current->mm->mmap_sem);
-       ret = get_user_pages(current, current->mm, user_addr,
-                            nr_pages, write, 0, pages, NULL);
-       up_read(&current->mm->mmap_sem);
+       ret = get_user_pages_fast(user_addr, nr_pages, write, pages);
 
        if (ret >= 0 && ret < nr_pages) {
                while (ret--)