/*
   *  linux/fs/sysv/file.c
   *
   *  minix/file.c
   *  Copyright (C) 1991, 1992  Linus Torvalds
   *
   *  coh/file.c
   *  Copyright (C) 1993  Pascal Haible, Bruno Haible
   *
   *  sysv/file.c
   *  Copyright (C) 1993  Bruno Haible
   *
   *  SystemV/Coherent regular file handling primitives
   */
  
  #include "sysv.h"
  
  /*
   * We have mostly NULLs here: the current defaults are OK for
   * the coh filesystem.
   */

  const struct file_operations sysv_file_operations = {

  	.llseek		= generic_file_llseek,

  	.read		= do_sync_read,
  	.aio_read	= generic_file_aio_read,
  	.write		= do_sync_write,
  	.aio_write	= generic_file_aio_write,

  	.mmap		= generic_file_mmap,
  	.fsync		= sysv_sync_file,

  	.splice_read	= generic_file_splice_read,

  };

  const struct inode_operations sysv_file_inode_operations = {

  	.truncate	= sysv_truncate,
  	.getattr	= sysv_getattr,
  };
  
  int sysv_sync_file(struct file * file, struct dentry *dentry, int datasync)
  {
  	struct inode *inode = dentry->d_inode;
  	int err;
  
  	err = sync_mapping_buffers(inode->i_mapping);
  	if (!(inode->i_state & I_DIRTY))
  		return err;
  	if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
  		return err;
  	
  	err |= sysv_sync_inode(inode);
  	return err ? -EIO : 0;
  }