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, 11 insertions, 14 deletions

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 022014016d80..9cc10136ba0b 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1379,22 +1379,21 @@ xfs_file_llseek(
  */
 STATIC int
 xfs_filemap_page_mkwrite(
-	struct vm_area_struct	*vma,
 	struct vm_fault		*vmf)
 {
-	struct inode		*inode = file_inode(vma->vm_file);
+	struct inode		*inode = file_inode(vmf->vma->vm_file);
 	int			ret;
 
 	trace_xfs_filemap_page_mkwrite(XFS_I(inode));
 
 	sb_start_pagefault(inode->i_sb);
-	file_update_time(vma->vm_file);
+	file_update_time(vmf->vma->vm_file);
 	xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
 
 	if (IS_DAX(inode)) {
-		ret = dax_iomap_fault(vma, vmf, &xfs_iomap_ops);
+		ret = dax_iomap_fault(vmf, &xfs_iomap_ops);
 	} else {
-		ret = iomap_page_mkwrite(vma, vmf, &xfs_iomap_ops);
+		ret = iomap_page_mkwrite(vmf, &xfs_iomap_ops);
 		ret = block_page_mkwrite_return(ret);
 	}
 
@@ -1406,23 +1405,22 @@ xfs_filemap_page_mkwrite(
 
 STATIC int
 xfs_filemap_fault(
-	struct vm_area_struct	*vma,
 	struct vm_fault		*vmf)
 {
-	struct inode		*inode = file_inode(vma->vm_file);
+	struct inode		*inode = file_inode(vmf->vma->vm_file);
 	int			ret;
 
 	trace_xfs_filemap_fault(XFS_I(inode));
 
 	/* DAX can shortcut the normal fault path on write faults! */
 	if ((vmf->flags & FAULT_FLAG_WRITE) && IS_DAX(inode))
-		return xfs_filemap_page_mkwrite(vma, vmf);
+		return xfs_filemap_page_mkwrite(vmf);
 
 	xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
 	if (IS_DAX(inode))
-		ret = dax_iomap_fault(vma, vmf, &xfs_iomap_ops);
+		ret = dax_iomap_fault(vmf, &xfs_iomap_ops);
 	else
-		ret = filemap_fault(vma, vmf);
+		ret = filemap_fault(vmf);
 	xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
 
 	return ret;
@@ -1471,11 +1469,10 @@ xfs_filemap_pmd_fault(
  */
 static int
 xfs_filemap_pfn_mkwrite(
-	struct vm_area_struct	*vma,
 	struct vm_fault		*vmf)
 {
 
-	struct inode		*inode = file_inode(vma->vm_file);
+	struct inode		*inode = file_inode(vmf->vma->vm_file);
 	struct xfs_inode	*ip = XFS_I(inode);
 	int			ret = VM_FAULT_NOPAGE;
 	loff_t			size;
@@ -1483,7 +1480,7 @@ xfs_filemap_pfn_mkwrite(
 	trace_xfs_filemap_pfn_mkwrite(ip);
 
 	sb_start_pagefault(inode->i_sb);
-	file_update_time(vma->vm_file);
+	file_update_time(vmf->vma->vm_file);
 
 	/* check if the faulting page hasn't raced with truncate */
 	xfs_ilock(ip, XFS_MMAPLOCK_SHARED);
@@ -1491,7 +1488,7 @@ xfs_filemap_pfn_mkwrite(
 	if (vmf->pgoff >= size)
 		ret = VM_FAULT_SIGBUS;
 	else if (IS_DAX(inode))
-		ret = dax_pfn_mkwrite(vma, vmf);
+		ret = dax_pfn_mkwrite(vmf);
 	xfs_iunlock(ip, XFS_MMAPLOCK_SHARED);
 	sb_end_pagefault(inode->i_sb);
 	return ret;