thinkpad-acpi: silence bogus warning when ACPI video is disabled
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / fs / exofs / file.c
blob6ed7fe4847522db1f7766528478d6b508ad64af7
1 /*
2 * Copyright (C) 2005, 2006
3 * Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com)
4 * Copyright (C) 2005, 2006
5 * International Business Machines
6 * Copyright (C) 2008, 2009
7 * Boaz Harrosh <bharrosh@panasas.com>
9 * Copyrights for code taken from ext2:
10 * Copyright (C) 1992, 1993, 1994, 1995
11 * Remy Card (card@masi.ibp.fr)
12 * Laboratoire MASI - Institut Blaise Pascal
13 * Universite Pierre et Marie Curie (Paris VI)
14 * from
15 * linux/fs/minix/inode.c
16 * Copyright (C) 1991, 1992 Linus Torvalds
18 * This file is part of exofs.
20 * exofs is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation. Since it is based on ext2, and the only
23 * valid version of GPL for the Linux kernel is version 2, the only valid
24 * version of GPL for exofs is version 2.
26 * exofs is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
31 * You should have received a copy of the GNU General Public License
32 * along with exofs; if not, write to the Free Software
33 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
36 #include <linux/buffer_head.h>
38 #include "exofs.h"
40 static int exofs_release_file(struct inode *inode, struct file *filp)
42 return 0;
45 static int exofs_file_fsync(struct file *filp, struct dentry *dentry,
46 int datasync)
48 int ret;
49 struct address_space *mapping = filp->f_mapping;
51 ret = filemap_write_and_wait(mapping);
52 if (ret)
53 return ret;
55 /*Note: file_fsync below also calles sync_blockdev, which is a no-op
56 * for exofs, but other then that it does sync_inode and
57 * sync_superblock which is what we need here.
59 return file_fsync(filp, dentry, datasync);
62 static int exofs_flush(struct file *file, fl_owner_t id)
64 exofs_file_fsync(file, file->f_path.dentry, 1);
65 /* TODO: Flush the OSD target */
66 return 0;
69 const struct file_operations exofs_file_operations = {
70 .llseek = generic_file_llseek,
71 .read = do_sync_read,
72 .write = do_sync_write,
73 .aio_read = generic_file_aio_read,
74 .aio_write = generic_file_aio_write,
75 .mmap = generic_file_mmap,
76 .open = generic_file_open,
77 .release = exofs_release_file,
78 .fsync = exofs_file_fsync,
79 .flush = exofs_flush,
80 .splice_read = generic_file_splice_read,
81 .splice_write = generic_file_splice_write,
84 const struct inode_operations exofs_file_inode_operations = {
85 .truncate = exofs_truncate,
86 .setattr = exofs_setattr,