diff options
| author | Lorenzo Stoakes <[email protected]> | 2017-05-08 15:55:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-05-08 17:15:10 -0700 |
| commit | 3d88936f35bc67f7bee2efd4eec69baf26c17a5a (patch) | |
| tree | 3b357c6495beba83d7a311d04ed97e9eca46e89b | |
| parent | 63259457a2eea54cc3b3a284b4bc7da52398a19a (diff) | |
drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked()
Moving from get_user_pages() to get_user_pages_unlocked() simplifies the
code and takes advantage of VM_FAULT_RETRY functionality when faulting
in pages.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Lorenzo Stoakes <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Mihai Caraman <[email protected]>
Cc: Greg KH <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | drivers/virt/fsl_hypervisor.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c index 150ce2abf6c8..d3eca879a0a8 100644 --- a/drivers/virt/fsl_hypervisor.c +++ b/drivers/virt/fsl_hypervisor.c @@ -243,11 +243,8 @@ 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(param.local_vaddr - lb_offset, - num_pages, (param.source == -1) ? 0 : FOLL_WRITE, - pages, NULL); - up_read(¤t->mm->mmap_sem); + num_pinned = get_user_pages_unlocked(param.local_vaddr - lb_offset, + num_pages, pages, (param.source == -1) ? 0 : FOLL_WRITE); if (num_pinned != num_pages) { /* get_user_pages() failed */ |