blob: 724df69847dca1ef2b22ee4827fb6f5c5003ef14 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Christoph Hellwig871a2932010-03-03 09:05:07 -050024#include <linux/quotaops.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#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{
Jan Kara9df93932010-01-06 21:58:48 +010037 if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) {
Theodore Ts'of7ab34e2009-04-03 01:34:35 -040038 filemap_flush(inode->i_mapping);
Jan Kara9df93932010-01-06 21:58:48 +010039 ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE);
Theodore Ts'of7ab34e2009-04-03 01:34:35 -040040 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 /* 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))
Mingming Cao21fe3472005-06-28 20:45:16 -070044 {
Arjan van de Ven97461512006-03-23 03:00:42 -080045 mutex_lock(&EXT3_I(inode)->truncate_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 ext3_discard_reservation(inode);
Arjan van de Ven97461512006-03-23 03:00:42 -080047 mutex_unlock(&EXT3_I(inode)->truncate_mutex);
Mingming Cao21fe3472005-06-28 20:45:16 -070048 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 if (is_dx(inode) && filp->private_data)
50 ext3_htree_free_dir_info(filp->private_data);
51
52 return 0;
53}
54
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -080055const struct file_operations ext3_file_operations = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 .llseek = generic_file_llseek,
57 .read = do_sync_read,
58 .write = do_sync_write,
59 .aio_read = generic_file_aio_read,
Jan Karae3676262009-08-18 17:51:23 +020060 .aio_write = generic_file_aio_write,
Cyrus Massoumi039fd8c2009-04-02 16:57:12 -070061 .unlocked_ioctl = ext3_ioctl,
David Howells52a700c2006-08-29 19:06:23 +010062#ifdef CONFIG_COMPAT
63 .compat_ioctl = ext3_compat_ioctl,
64#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 .mmap = generic_file_mmap,
Christoph Hellwig907f4552010-03-03 09:05:06 -050066 .open = dquot_file_open,
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 .release = ext3_release_file,
68 .fsync = ext3_sync_file,
Jens Axboe5274f052006-03-30 15:15:30 +020069 .splice_read = generic_file_splice_read,
70 .splice_write = generic_file_splice_write,
Linus Torvalds1da177e2005-04-16 15:20:36 -070071};
72
Arjan van de Ven754661f2007-02-12 00:55:38 -080073const struct inode_operations ext3_file_inode_operations = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 .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
Christoph Hellwig4e34e712011-07-23 17:37:31 +020081 .get_acl = ext3_get_acl,
Josef Bacik68c9d702008-10-03 17:32:43 -040082 .fiemap = ext3_fiemap,
Linus Torvalds1da177e2005-04-16 15:20:36 -070083};
84