Adapt to nopage() prototype change in Linux 2.6.1.

Reviewed by: Arjan van de Ven <arjanv@redhat.com>, additional feedback from
    William Lee Irwin III and Linus Torvalds.

1 files changed, 97 insertions, 43 deletions

diff --git a/linux/drm_vm.h b/linux/drm_vm.h
index 8f4679f9..5b975986 100644
--- a/linux/drm_vm.h
+++ b/linux/drm_vm.h
@@ -36,48 +36,19 @@
 #define __NO_VERSION__
 #include "drmP.h"
 
-/** AGP virtual memory operations */
-struct vm_operations_struct   DRM(vm_ops) = {
-	.nopage = DRM(vm_nopage),
-	.open	= DRM(vm_open),
-	.close	= DRM(vm_close),
-};
-
-/** Shared virtual memory operations */
-struct vm_operations_struct   DRM(vm_shm_ops) = {
-	.nopage = DRM(vm_shm_nopage),
-	.open	= DRM(vm_open),
-	.close	= DRM(vm_shm_close),
-};
-
-/** DMA virtual memory operations */
-struct vm_operations_struct   DRM(vm_dma_ops) = {
-	.nopage = DRM(vm_dma_nopage),
-	.open	= DRM(vm_open),
-	.close	= DRM(vm_close),
-};
-
-/** Scatter-gather virtual memory operations */
-struct vm_operations_struct   DRM(vm_sg_ops) = {
-	.nopage = DRM(vm_sg_nopage),
-	.open   = DRM(vm_open),
-	.close  = DRM(vm_close),
-};
 
 /**
  * \c nopage method for AGP virtual memory.
  *
  * \param vma virtual memory area.
  * \param address access address.
- * \param write_access sharing.
  * \return pointer to the page structure.
  * 
  * Find the right map and if it's AGP memory find the real physical page to
  * map, get the page, increment the use count and return it.
  */
-struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
-			    unsigned long address,
-			    int write_access)
+static __inline__ struct page *DRM(do_vm_nopage)(struct vm_area_struct *vma,
+						 unsigned long address)
 {
 #if __REALLY_HAVE_AGP
 	drm_file_t *priv  = vma->vm_file->private_data;
@@ -147,15 +118,13 @@ vm_nopage_error:
  *
  * \param vma virtual memory area.
  * \param address access address.
- * \param write_access sharing.
  * \return pointer to the page structure.
  * 
  * Get the the mapping, find the real physical page to map, get the page, and
  * return it.
  */
-struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
-				unsigned long address,
-				int write_access)
+static __inline__ struct page *DRM(do_vm_shm_nopage)(struct vm_area_struct *vma,
+						     unsigned long address)
 {
 	drm_map_t	 *map	 = (drm_map_t *)vma->vm_private_data;
 	unsigned long	 offset;
@@ -262,14 +231,12 @@ void DRM(vm_shm_close)(struct vm_area_struct *vma)
  *
  * \param vma virtual memory area.
  * \param address access address.
- * \param write_access sharing.
  * \return pointer to the page structure.
  * 
  * Determine the page number from the page offset and get it from drm_device_dma::pagelist.
  */
-struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
-				unsigned long address,
-				int write_access)
+static __inline__ struct page *DRM(do_vm_dma_nopage)(struct vm_area_struct *vma,
+						     unsigned long address)
 {
 	drm_file_t	 *priv	 = vma->vm_file->private_data;
 	drm_device_t	 *dev	 = priv->dev;
@@ -298,14 +265,12 @@ struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
  *
  * \param vma virtual memory area.
  * \param address access address.
- * \param write_access sharing.
  * \return pointer to the page structure.
  * 
  * Determine the map offset from the page offset and get it from drm_sg_mem::pagelist.
  */
-struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
-			       unsigned long address,
-			       int write_access)
+static __inline__ struct page *DRM(do_vm_sg_nopage)(struct vm_area_struct *vma,
+						    unsigned long address)
 {
 	drm_map_t        *map    = (drm_map_t *)vma->vm_private_data;
 	drm_file_t *priv = vma->vm_file->private_data;
@@ -330,6 +295,95 @@ struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
 	return page;
 }
 
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
+
+static struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
+				   unsigned long address,
+				   int *type) {
+	if (type) *type = VM_FAULT_MINOR;
+	return DRM(do_vm_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
+				       unsigned long address,
+				       int *type) {
+	if (type) *type = VM_FAULT_MINOR;
+	return DRM(do_vm_shm_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
+				       unsigned long address,
+				       int *type) {
+	if (type) *type = VM_FAULT_MINOR;
+	return DRM(do_vm_dma_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
+				      unsigned long address,
+				      int *type) {
+	if (type) *type = VM_FAULT_MINOR;
+	return DRM(do_vm_sg_nopage)(vma, address);
+}
+
+#else	/* LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,0) */
+
+static struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
+				   unsigned long address,
+				   int unused) {
+	return DRM(do_vm_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
+				       unsigned long address,
+				       int unused) {
+	return DRM(do_vm_shm_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
+				       unsigned long address,
+				       int unused) {
+	return DRM(do_vm_dma_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
+				      unsigned long address,
+				      int unused) {
+	return DRM(do_vm_sg_nopage)(vma, address);
+}
+
+#endif
+
+
+/** AGP virtual memory operations */
+static struct vm_operations_struct   DRM(vm_ops) = {
+	.nopage = DRM(vm_nopage),
+	.open	= DRM(vm_open),
+	.close	= DRM(vm_close),
+};
+
+/** Shared virtual memory operations */
+static struct vm_operations_struct   DRM(vm_shm_ops) = {
+	.nopage = DRM(vm_shm_nopage),
+	.open	= DRM(vm_open),
+	.close	= DRM(vm_shm_close),
+};
+
+/** DMA virtual memory operations */
+static struct vm_operations_struct   DRM(vm_dma_ops) = {
+	.nopage = DRM(vm_dma_nopage),
+	.open	= DRM(vm_open),
+	.close	= DRM(vm_close),
+};
+
+/** Scatter-gather virtual memory operations */
+static struct vm_operations_struct   DRM(vm_sg_ops) = {
+	.nopage = DRM(vm_sg_nopage),
+	.open   = DRM(vm_open),
+	.close  = DRM(vm_close),
+};
+
+
 /**
  * \c open method for shared virtual memory.
  *