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 */
ext3_release_file(struct inode * inode,struct file * filp)31 static 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
51 const 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
67 const 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