[PATCH] drm/vma-manager: Don't unmap COW'd pages when zapping bo ptes

[Thomas Hellstrom]

Not sure if there are any user-space users of private bo mappings, but
if there are, or will be, zapping the COW'd pages when, for example,
moving a bo would confuse the user immensely since the net effect for the
user would be that pages written to would lose their contents.

Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>
---
 include/drm/drm_vma_manager.h |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/drm/drm_vma_manager.h b/include/drm/drm_vma_manager.h
index c18a593..347077d 100644
--- a/include/drm/drm_vma_manager.h
+++ b/include/drm/drm_vma_manager.h
@@ -231,9 +231,9 @@ static inline void drm_vma_node_unmap(struct drm_vma_offset_node *node,
 				      struct address_space *file_mapping)
 {
 	if (file_mapping && drm_vma_node_has_offset(node))
-		unmap_mapping_range(file_mapping,
-				    drm_vma_node_offset_addr(node),
-				    drm_vma_node_size(node) << PAGE_SHIFT, 1);
+		unmap_shared_mapping_range
+			(file_mapping, drm_vma_node_offset_addr(node),
+			 drm_vma_node_size(node) << PAGE_SHIFT);
 }
 
 /**
-- 
1.7.10.4