1 files changed, 23 insertions, 21 deletions

diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index 1739a4aba25..dda012ad420 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -21,29 +21,29 @@
 #include <linux/pagevec.h>
 #include <linux/mman.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 #include "internal.h"
 
 static int ramfs_nommu_setattr(struct dentry *, struct iattr *);
-
-const struct address_space_operations ramfs_aops = {
-	.readpage		= simple_readpage,
-	.write_begin		= simple_write_begin,
-	.write_end		= simple_write_end,
-	.set_page_dirty		= __set_page_dirty_no_writeback,
-};
+static unsigned long ramfs_nommu_get_unmapped_area(struct file *file,
+						   unsigned long addr,
+						   unsigned long len,
+						   unsigned long pgoff,
+						   unsigned long flags);
+static int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma);
 
 const struct file_operations ramfs_file_operations = {
 	.mmap			= ramfs_nommu_mmap,
 	.get_unmapped_area	= ramfs_nommu_get_unmapped_area,
-	.read			= do_sync_read,
-	.aio_read		= generic_file_aio_read,
-	.write			= do_sync_write,
-	.aio_write		= generic_file_aio_write,
-	.fsync			= simple_sync_file,
+	.read			= new_sync_read,
+	.read_iter		= generic_file_read_iter,
+	.write			= new_sync_write,
+	.write_iter		= generic_file_write_iter,
+	.fsync			= noop_fsync,
 	.splice_read		= generic_file_splice_read,
-	.splice_write		= generic_file_splice_write,
+	.splice_write		= iter_file_splice_write,
 	.llseek			= generic_file_llseek,
 };
 
@@ -109,8 +109,10 @@ int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize)
 
 		/* prevent the page from being discarded on memory pressure */
 		SetPageDirty(page);
+		SetPageUptodate(page);
 
 		unlock_page(page);
+		put_page(page);
 	}
 
 	return 0;
@@ -145,9 +147,8 @@ static int ramfs_nommu_resize(struct inode *inode, loff_t newsize, loff_t size)
 			return ret;
 	}
 
-	ret = vmtruncate(inode, newsize);
-
-	return ret;
+	truncate_setsize(inode, newsize);
+	return 0;
 }
 
 /*****************************************************************************/
@@ -168,7 +169,8 @@ static int ramfs_nommu_setattr(struct dentry *dentry, struct iattr *ia)
 
 	/* pick out size-changing events */
 	if (ia->ia_valid & ATTR_SIZE) {
-		loff_t size = i_size_read(inode);
+		loff_t size = inode->i_size;
+
 		if (ia->ia_size != size) {
 			ret = ramfs_nommu_resize(inode, ia->ia_size, size);
 			if (ret < 0 || ia->ia_valid == ATTR_SIZE)
@@ -181,7 +183,7 @@ static int ramfs_nommu_setattr(struct dentry *dentry, struct iattr *ia)
 		}
 	}
 
-	ret = inode_setattr(inode, ia);
+	setattr_copy(inode, ia);
  out:
 	ia->ia_valid = old_ia_valid;
 	return ret;
@@ -194,12 +196,12 @@ static int ramfs_nommu_setattr(struct dentry *dentry, struct iattr *ia)
  *   - the pages to be mapped must exist
  *   - the pages be physically contiguous in sequence
  */
-unsigned long ramfs_nommu_get_unmapped_area(struct file *file,
+static unsigned long ramfs_nommu_get_unmapped_area(struct file *file,
 					    unsigned long addr, unsigned long len,
 					    unsigned long pgoff, unsigned long flags)
 {
 	unsigned long maxpages, lpages, nr, loop, ret;
-	struct inode *inode = file->f_path.dentry->d_inode;
+	struct inode *inode = file_inode(file);
 	struct page **pages = NULL, **ptr, *page;
 	loff_t isize;
 
@@ -253,7 +255,7 @@ out:
 /*
  * set up a mapping for shared memory segments
  */
-int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma)
+static int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma)
 {
 	if (!(vma->vm_flags & VM_SHARED))
 		return -ENOSYS;