/* *  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,	.sendfile	= generic_file_sendfile,}; 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;}