mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to
take a vma and vmf parameter when the vma already resides in vmf.

Remove the vma parameter to simplify things.

[arnd@arndb.de: fix ARM build]
  Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de
Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 17 insertions, 15 deletions

diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index bd311c77c254..bae6e26038ee 100644
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -96,8 +96,9 @@ static pgprot_t drm_dma_prot(uint32_t map_type, struct vm_area_struct *vma)
  * map, get the page, increment the use count and return it.
  */
 #if IS_ENABLED(CONFIG_AGP)
-static int drm_do_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_do_vm_fault(struct vm_fault *vmf)
 {
+	struct vm_area_struct *vma = vmf->vma;
 	struct drm_file *priv = vma->vm_file->private_data;
 	struct drm_device *dev = priv->minor->dev;
 	struct drm_local_map *map = NULL;
@@ -168,7 +169,7 @@ vm_fault_error:
 	return VM_FAULT_SIGBUS;	/* Disallow mremap */
 }
 #else
-static int drm_do_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_do_vm_fault(struct vm_fault *vmf)
 {
 	return VM_FAULT_SIGBUS;
 }
@@ -184,8 +185,9 @@ static int drm_do_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
  * Get the mapping, find the real physical page to map, get the page, and
  * return it.
  */
-static int drm_do_vm_shm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_do_vm_shm_fault(struct vm_fault *vmf)
 {
+	struct vm_area_struct *vma = vmf->vma;
 	struct drm_local_map *map = vma->vm_private_data;
 	unsigned long offset;
 	unsigned long i;
@@ -280,14 +282,14 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
 /**
  * \c fault method for DMA virtual memory.
  *
- * \param vma virtual memory area.
  * \param address access address.
  * \return pointer to the page structure.
  *
  * Determine the page number from the page offset and get it from drm_device_dma::pagelist.
  */
-static int drm_do_vm_dma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_do_vm_dma_fault(struct vm_fault *vmf)
 {
+	struct vm_area_struct *vma = vmf->vma;
 	struct drm_file *priv = vma->vm_file->private_data;
 	struct drm_device *dev = priv->minor->dev;
 	struct drm_device_dma *dma = dev->dma;
@@ -315,14 +317,14 @@ static int drm_do_vm_dma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 /**
  * \c fault method for scatter-gather virtual memory.
  *
- * \param vma virtual memory area.
  * \param address access address.
  * \return pointer to the page structure.
  *
  * Determine the map offset from the page offset and get it from drm_sg_mem::pagelist.
  */
-static int drm_do_vm_sg_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_do_vm_sg_fault(struct vm_fault *vmf)
 {
+	struct vm_area_struct *vma = vmf->vma;
 	struct drm_local_map *map = vma->vm_private_data;
 	struct drm_file *priv = vma->vm_file->private_data;
 	struct drm_device *dev = priv->minor->dev;
@@ -347,24 +349,24 @@ static int drm_do_vm_sg_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	return 0;
 }
 
-static int drm_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_vm_fault(struct vm_fault *vmf)
 {
-	return drm_do_vm_fault(vma, vmf);
+	return drm_do_vm_fault(vmf);
 }
 
-static int drm_vm_shm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_vm_shm_fault(struct vm_fault *vmf)
 {
-	return drm_do_vm_shm_fault(vma, vmf);
+	return drm_do_vm_shm_fault(vmf);
 }
 
-static int drm_vm_dma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_vm_dma_fault(struct vm_fault *vmf)
 {
-	return drm_do_vm_dma_fault(vma, vmf);
+	return drm_do_vm_dma_fault(vmf);
 }
 
-static int drm_vm_sg_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int drm_vm_sg_fault(struct vm_fault *vmf)
 {
-	return drm_do_vm_sg_fault(vma, vmf);
+	return drm_do_vm_sg_fault(vmf);
 }
 
 /** AGP virtual memory operations */