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>

2 files changed, 21 insertions, 22 deletions

diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index 491c5d8120f7..ab9d14c0e460 100644
--- a/arch/powerpc/kvm/book3s_64_vio.c
+++ b/arch/powerpc/kvm/book3s_64_vio.c
@@ -102,9 +102,9 @@ static void release_spapr_tce_table(struct rcu_head *head)
 	kfree(stt);
 }
 
-static int kvm_spapr_tce_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int kvm_spapr_tce_fault(struct vm_fault *vmf)
 {
-	struct kvmppc_spapr_tce_table *stt = vma->vm_file->private_data;
+	struct kvmppc_spapr_tce_table *stt = vmf->vma->vm_file->private_data;
 	struct page *page;
 
 	if (vmf->pgoff >= kvmppc_tce_pages(stt->size))
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index a35e2c29d7ee..e5ec1368f0cd 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -233,8 +233,9 @@ spufs_mem_write(struct file *file, const char __user *buffer,
 }
 
 static int
-spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+spufs_mem_mmap_fault(struct vm_fault *vmf)
 {
+	struct vm_area_struct *vma = vmf->vma;
 	struct spu_context *ctx	= vma->vm_file->private_data;
 	unsigned long pfn, offset;
 
@@ -311,12 +312,11 @@ static const struct file_operations spufs_mem_fops = {
 	.mmap			= spufs_mem_mmap,
 };
 
-static int spufs_ps_fault(struct vm_area_struct *vma,
-				    struct vm_fault *vmf,
+static int spufs_ps_fault(struct vm_fault *vmf,
 				    unsigned long ps_offs,
 				    unsigned long ps_size)
 {
-	struct spu_context *ctx = vma->vm_file->private_data;
+	struct spu_context *ctx = vmf->vma->vm_file->private_data;
 	unsigned long area, offset = vmf->pgoff << PAGE_SHIFT;
 	int ret = 0;
 
@@ -354,7 +354,7 @@ static int spufs_ps_fault(struct vm_area_struct *vma,
 		down_read(&current->mm->mmap_sem);
 	} else {
 		area = ctx->spu->problem_phys + ps_offs;
-		vm_insert_pfn(vma, vmf->address, (area + offset) >> PAGE_SHIFT);
+		vm_insert_pfn(vmf->vma, vmf->address, (area + offset) >> PAGE_SHIFT);
 		spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu);
 	}
 
@@ -367,10 +367,9 @@ refault:
 }
 
 #if SPUFS_MMAP_4K
-static int spufs_cntl_mmap_fault(struct vm_area_struct *vma,
-					   struct vm_fault *vmf)
+static int spufs_cntl_mmap_fault(struct vm_fault *vmf)
 {
-	return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE);
+	return spufs_ps_fault(vmf, 0x4000, SPUFS_CNTL_MAP_SIZE);
 }
 
 static const struct vm_operations_struct spufs_cntl_mmap_vmops = {
@@ -1067,15 +1066,15 @@ static ssize_t spufs_signal1_write(struct file *file, const char __user *buf,
 }
 
 static int
-spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+spufs_signal1_mmap_fault(struct vm_fault *vmf)
 {
 #if SPUFS_SIGNAL_MAP_SIZE == 0x1000
-	return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE);
+	return spufs_ps_fault(vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE);
 #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
 	/* For 64k pages, both signal1 and signal2 can be used to mmap the whole
 	 * signal 1 and 2 area
 	 */
-	return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
+	return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
 #else
 #error unsupported page size
 #endif
@@ -1205,15 +1204,15 @@ static ssize_t spufs_signal2_write(struct file *file, const char __user *buf,
 
 #if SPUFS_MMAP_4K
 static int
-spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+spufs_signal2_mmap_fault(struct vm_fault *vmf)
 {
 #if SPUFS_SIGNAL_MAP_SIZE == 0x1000
-	return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE);
+	return spufs_ps_fault(vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE);
 #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
 	/* For 64k pages, both signal1 and signal2 can be used to mmap the whole
 	 * signal 1 and 2 area
 	 */
-	return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
+	return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
 #else
 #error unsupported page size
 #endif
@@ -1334,9 +1333,9 @@ DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get,
 
 #if SPUFS_MMAP_4K
 static int
-spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+spufs_mss_mmap_fault(struct vm_fault *vmf)
 {
-	return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE);
+	return spufs_ps_fault(vmf, 0x0000, SPUFS_MSS_MAP_SIZE);
 }
 
 static const struct vm_operations_struct spufs_mss_mmap_vmops = {
@@ -1396,9 +1395,9 @@ static const struct file_operations spufs_mss_fops = {
 };
 
 static int
-spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+spufs_psmap_mmap_fault(struct vm_fault *vmf)
 {
-	return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE);
+	return spufs_ps_fault(vmf, 0x0000, SPUFS_PS_MAP_SIZE);
 }
 
 static const struct vm_operations_struct spufs_psmap_mmap_vmops = {
@@ -1456,9 +1455,9 @@ static const struct file_operations spufs_psmap_fops = {
 
 #if SPUFS_MMAP_4K
 static int
-spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+spufs_mfc_mmap_fault(struct vm_fault *vmf)
 {
-	return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE);
+	return spufs_ps_fault(vmf, 0x3000, SPUFS_MFC_MAP_SIZE);
 }
 
 static const struct vm_operations_struct spufs_mfc_mmap_vmops = {