x86, mm: pass in 'total' to __copy_from_user_*nocache()

Impact: cleanup, enable future change

Add a 'total bytes copied' parameter to __copy_from_user_*nocache(),
and update all the callsites.

The parameter is not used yet - architecture code can use it to
more intelligently decide whether the copy should be cached or
non-temporal.

Cc: Salman Qazi <sqazi@google.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 818576654092..6b209db8370d 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -215,7 +215,7 @@ fast_user_write(struct io_mapping *mapping,
 
         vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base);
         unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset,
-                                                      user_data, length);
+                                                      user_data, length, length);
         io_mapping_unmap_atomic(vaddr_atomic);
         if (unwritten)
                 return -EFAULT;