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/quotaops.h>
22#include "ext3.h"
23#include "xattr.h"
24#include "acl.h"
25
26/*
27 * Called when an inode is released. Note that this is different
28 * from ext3_file_open: open gets called at every open, but release
29 * gets called only when /all/ the files are closed.
30 */
31static int ext3_release_file (struct inode * inode, struct file * filp)
32{
33	if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) {
34		filemap_flush(inode->i_mapping);
35		ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE);
36	}
37	/* if we are the last writer on the inode, drop the block reservation */
38	if ((filp->f_mode & FMODE_WRITE) &&
39			(atomic_read(&inode->i_writecount) == 1))
40	{
41		mutex_lock(&EXT3_I(inode)->truncate_mutex);
42		ext3_discard_reservation(inode);
43		mutex_unlock(&EXT3_I(inode)->truncate_mutex);
44	}
45	if (is_dx(inode) && filp->private_data)
46		ext3_htree_free_dir_info(filp->private_data);
47
48	return 0;
49}
50
51const struct file_operations ext3_file_operations = {
52	.llseek		= generic_file_llseek,
53	.read_iter	= generic_file_read_iter,
54	.write_iter	= generic_file_write_iter,
55	.unlocked_ioctl	= ext3_ioctl,
56#ifdef CONFIG_COMPAT
57	.compat_ioctl	= ext3_compat_ioctl,
58#endif
59	.mmap		= generic_file_mmap,
60	.open		= dquot_file_open,
61	.release	= ext3_release_file,
62	.fsync		= ext3_sync_file,
63	.splice_read	= generic_file_splice_read,
64	.splice_write	= iter_file_splice_write,
65};
66
67const struct inode_operations ext3_file_inode_operations = {
68	.setattr	= ext3_setattr,
69#ifdef CONFIG_EXT3_FS_XATTR
70	.setxattr	= generic_setxattr,
71	.getxattr	= generic_getxattr,
72	.listxattr	= ext3_listxattr,
73	.removexattr	= generic_removexattr,
74#endif
75	.get_acl	= ext3_get_acl,
76	.set_acl	= ext3_set_acl,
77	.fiemap		= ext3_fiemap,
78};
79
80