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		= do_sync_read,
54	.write		= do_sync_write,
55	.aio_read	= generic_file_aio_read,
56	.aio_write	= generic_file_aio_write,
57	.unlocked_ioctl	= ext3_ioctl,
58#ifdef CONFIG_COMPAT
59	.compat_ioctl	= ext3_compat_ioctl,
60#endif
61	.mmap		= generic_file_mmap,
62	.open		= dquot_file_open,
63	.release	= ext3_release_file,
64	.fsync		= ext3_sync_file,
65	.splice_read	= generic_file_splice_read,
66	.splice_write	= generic_file_splice_write,
67};
68
69const struct inode_operations ext3_file_inode_operations = {
70	.setattr	= ext3_setattr,
71#ifdef CONFIG_EXT3_FS_XATTR
72	.setxattr	= generic_setxattr,
73	.getxattr	= generic_getxattr,
74	.listxattr	= ext3_listxattr,
75	.removexattr	= generic_removexattr,
76#endif
77	.get_acl	= ext3_get_acl,
78	.fiemap		= ext3_fiemap,
79};
80