[PATCH 13/26] fsl_hypervisor: Convert ioctl_memcpy() to use get_user_pages_fast()

[Jan Kara]

CC: Timur Tabi <ti...@freescale.com>
Signed-off-by: Jan Kara <j...@suse.cz>
---
 drivers/virt/fsl_hypervisor.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
index d294f67d6f84..791a46a5dd2a 100644
--- a/drivers/virt/fsl_hypervisor.c
+++ b/drivers/virt/fsl_hypervisor.c
@@ -242,13 +242,8 @@ static long ioctl_memcpy(struct fsl_hv_ioctl_memcpy __user 
*p)
        sg_list = PTR_ALIGN(sg_list_unaligned, sizeof(struct fh_sg_list));
 
        /* Get the physical addresses of the source buffer */
-       down_read(&current->mm->mmap_sem);
-       num_pinned = get_user_pages(current, current->mm,
-               param.local_vaddr - lb_offset, num_pages,
-               (param.source == -1) ? READ : WRITE,
-               0, pages, NULL);
-       up_read(&current->mm->mmap_sem);
-
+       num_pinned = get_user_pages_fast(param.local_vaddr - lb_offset,
+               num_pages, (param.source == -1) ? READ : WRITE, pages);
        if (num_pinned != num_pages) {
                /* get_user_pages() failed */
                pr_debug("fsl-hv: could not lock source buffer\n");
-- 
1.8.1.4

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