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 */
ext3_release_file(struct inode * inode,struct file * filp)35 static 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
55 const 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
73 const 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
85