Messages in this thread Patch in this message | | | From | Jan Kara <> | Subject | [PATCH 13/26] fsl_hypervisor: Convert ioctl_memcpy() to use get_user_pages_fast() | Date | Wed, 2 Oct 2013 16:27:54 +0200 |
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CC: Timur Tabi <timur@freescale.com> Signed-off-by: Jan Kara <jack@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(¤t->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(¤t->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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