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e8062719 BH |
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> | |
8 | * | |
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 | |
17 | * | |
18 | * This file is part of exofs. | |
19 | * | |
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. | |
25 | * | |
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. | |
30 | * | |
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 | |
34 | */ | |
35 | ||
36 | #include <linux/buffer_head.h> | |
37 | ||
38 | #include "exofs.h" | |
39 | ||
40 | static int exofs_release_file(struct inode *inode, struct file *filp) | |
41 | { | |
42 | return 0; | |
43 | } | |
44 | ||
45 | static int exofs_file_fsync(struct file *filp, struct dentry *dentry, | |
46 | int datasync) | |
47 | { | |
48 | int ret; | |
49 | struct address_space *mapping = filp->f_mapping; | |
50 | ||
51 | ret = filemap_write_and_wait(mapping); | |
52 | if (ret) | |
53 | return ret; | |
54 | ||
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. | |
58 | */ | |
59 | return file_fsync(filp, dentry, datasync); | |
60 | } | |
61 | ||
62 | static int exofs_flush(struct file *file, fl_owner_t id) | |
63 | { | |
64 | exofs_file_fsync(file, file->f_path.dentry, 1); | |
65 | /* TODO: Flush the OSD target */ | |
66 | return 0; | |
67 | } | |
68 | ||
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, | |
82 | }; | |
83 | ||
84 | const struct inode_operations exofs_file_inode_operations = { | |
85 | .truncate = exofs_truncate, | |
86 | .setattr = exofs_setattr, | |
87 | }; |