linux/fs/reiserfs/file.c

/*
 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
 */

#include <linux/time.h>
#include "reiserfs.h"
#include "acl.h"
#include "xattr.h"
#include <linux/uaccess.h>
#include <linux/pagemap.h>
#include <linux/swap.h>
#include <linux/writeback.h>
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/quotaops.h>

/*
 * We pack the tails of files on file close, not at the time they are written.
 * This implies an unnecessary copy of the tail and an unnecessary indirect item
 * insertion/balancing, for files that are written in one write.
 * It avoids unnecessary tail packings (balances) for files that are written in
 * multiple writes and are small enough to have tails.
 *
 * file_release is called by the VFS layer when the file is closed.  If
 * this is the last open file descriptor, and the file
 * small enough to have a tail, and the tail is currently in an
 * unformatted node, the tail is converted back into a direct item.
 *
 * We use reiserfs_truncate_file to pack the tail, since it already has
 * all the conditions coded.
 */
static int reiserfs_file_release(struct inode *inode, struct file *filp)
{ … }

static int reiserfs_file_open(struct inode *inode, struct file *file)
{ … }

void reiserfs_vfs_truncate_file(struct inode *inode)
{ … }

/* Sync a reiserfs file. */

/*
 * FIXME: sync_mapping_buffers() never has anything to sync.  Can
 * be removed...
 */

static int reiserfs_sync_file(struct file *filp, loff_t start, loff_t end,
			      int datasync)
{ … }

/* taken fs/buffer.c:__block_commit_write */
int reiserfs_commit_page(struct inode *inode, struct page *page,
			 unsigned from, unsigned to)
{ … }

const struct file_operations reiserfs_file_operations = …;

const struct inode_operations reiserfs_file_inode_operations = …;

const struct inode_operations reiserfs_priv_file_inode_operations = …;