1/*
 2 *  linux/fs/ext3/file.c
 3 *
 4 * Copyright (C) 1992, 1993, 1994, 1995
 5 * Remy Card (card@masi.ibp.fr)
 6 * Laboratoire MASI - Institut Blaise Pascal
 7 * Universite Pierre et Marie Curie (Paris VI)
 8 *
 9 *  from
10 *
11 *  linux/fs/minix/file.c
12 *
13 *  Copyright (C) 1991, 1992  Linus Torvalds
14 *
15 *  ext3 fs regular file handling primitives
16 *
17 *  64-bit file support on 64-bit platforms by Jakub Jelinek
18 *	(jj@sunsite.ms.mff.cuni.cz)
19 */
20
21#include <linux/time.h>
22#include <linux/fs.h>
23#include <linux/jbd.h>
24#include <linux/quotaops.h>
25#include <linux/ext3_fs.h>
26#include <linux/ext3_jbd.h>
27#include "xattr.h"
28#include "acl.h"
29
30/*
31 * Called when an inode is released. Note that this is different
32 * from ext3_file_open: open gets called at every open, but release
33 * gets called only when /all/ the files are closed.
34 */
35static int ext3_release_file (struct inode * inode, struct file * filp)
36{
37	if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) {
38		filemap_flush(inode->i_mapping);
39		ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE);
40	}
41	/* if we are the last writer on the inode, drop the block reservation */
42	if ((filp->f_mode & FMODE_WRITE) &&
43			(atomic_read(&inode->i_writecount) == 1))
44	{
45		mutex_lock(&EXT3_I(inode)->truncate_mutex);
46		ext3_discard_reservation(inode);
47		mutex_unlock(&EXT3_I(inode)->truncate_mutex);
48	}
49	if (is_dx(inode) && filp->private_data)
50		ext3_htree_free_dir_info(filp->private_data);
51
52	return 0;
53}
54
55const struct file_operations ext3_file_operations = {
56	.llseek		= generic_file_llseek,
57	.read		= do_sync_read,
58	.write		= do_sync_write,
59	.aio_read	= generic_file_aio_read,
60	.aio_write	= generic_file_aio_write,
61	.unlocked_ioctl	= ext3_ioctl,
62#ifdef CONFIG_COMPAT
63	.compat_ioctl	= ext3_compat_ioctl,
64#endif
65	.mmap		= generic_file_mmap,
66	.open		= dquot_file_open,
67	.release	= ext3_release_file,
68	.fsync		= ext3_sync_file,
69	.splice_read	= generic_file_splice_read,
70	.splice_write	= generic_file_splice_write,
71};
72
73const struct inode_operations ext3_file_inode_operations = {
74	.setattr	= ext3_setattr,
75#ifdef CONFIG_EXT3_FS_XATTR
76	.setxattr	= generic_setxattr,
77	.getxattr	= generic_getxattr,
78	.listxattr	= ext3_listxattr,
79	.removexattr	= generic_removexattr,
80#endif
81	.get_acl	= ext3_get_acl,
82	.fiemap		= ext3_fiemap,
83};
84