Revert "ecryptfs: modify write path to encrypt page in writepage"

fs/ecryptfs/file.c

 /**
  * eCryptfs: Linux filesystem encryption layer
  *
  * Copyright (C) 1997-2004 Erez Zadok
  * Copyright (C) 2001-2004 Stony Brook University
  * Copyright (C) 2004-2007 International Business Machines Corp.
  *   Author(s): Michael A. Halcrow <mhalcrow@us.ibm.com>
  *              Michael C. Thompson <mcthomps@us.ibm.com>
  *
  * This program is free software; you can redistribute it and/or
@@ skipping 257 matching lines @@
 static int ecryptfs_release(struct inode *inode, struct file *file)
 {
         kmem_cache_free(ecryptfs_file_info_cache,
                         ecryptfs_file_to_private(file));
         return 0;
 }
 
 static int
 ecryptfs_fsync(struct file *file, struct dentry *dentry, int datasync)
 {
-        int rc = 0;
-
-        rc = simple_fsync(file, dentry, datasync);
-        if (rc)
-                goto out;
-        rc = vfs_fsync(ecryptfs_file_to_lower(file),
-                       ecryptfs_dentry_to_lower(dentry),
-                       datasync);
-out:
-        return rc;
+        return vfs_fsync(ecryptfs_file_to_lower(file),
+                         ecryptfs_dentry_to_lower(dentry),
+                         datasync);
 }
 
 static int ecryptfs_fasync(int fd, struct file *file, int flag)
 {
         int rc = 0;
         struct file *lower_file = NULL;
 
         lock_kernel();
         lower_file = ecryptfs_file_to_lower(file);
         if (lower_file->f_op && lower_file->f_op->fasync)
@@ skipping 57 matching lines @@
         .compat_ioctl = ecryptfs_compat_ioctl,
 #endif
         .mmap = generic_file_mmap,
         .open = ecryptfs_open,
         .flush = ecryptfs_flush,
         .release = ecryptfs_release,
         .fsync = ecryptfs_fsync,
         .fasync = ecryptfs_fasync,
         .splice_read = generic_file_splice_read,
 };