2 * Copyright (C) 2005, 2006
3 * Avishay Traeger (avishay@gmail.com)
4 * Copyright (C) 2008, 2009
5 * Boaz Harrosh <bharrosh@panasas.com>
7 * Copyrights for code taken from ext2:
8 * Copyright (C) 1992, 1993, 1994, 1995
9 * Remy Card (card@masi.ibp.fr)
10 * Laboratoire MASI - Institut Blaise Pascal
11 * Universite Pierre et Marie Curie (Paris VI)
13 * linux/fs/minix/inode.c
14 * Copyright (C) 1991, 1992 Linus Torvalds
16 * This file is part of exofs.
18 * exofs is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation. Since it is based on ext2, and the only
21 * valid version of GPL for the Linux kernel is version 2, the only valid
22 * version of GPL for exofs is version 2.
24 * exofs is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
29 * You should have received a copy of the GNU General Public License
30 * along with exofs; if not, write to the Free Software
31 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
35 static int exofs_release_file(struct inode
*inode
, struct file
*filp
)
40 /* exofs_file_fsync - flush the inode to disk
42 * Note, in exofs all metadata is written as part of inode, regardless.
43 * The writeout is synchronous
45 static int exofs_file_fsync(struct file
*filp
, int datasync
)
48 struct inode
*inode
= filp
->f_mapping
->host
;
49 struct writeback_control wbc
= {
50 .sync_mode
= WB_SYNC_ALL
,
51 .nr_to_write
= 0, /* metadata-only; caller takes care of data */
53 struct super_block
*sb
;
55 if (!(inode
->i_state
& I_DIRTY
))
57 if (datasync
&& !(inode
->i_state
& I_DIRTY_DATASYNC
))
60 ret
= sync_inode(inode
, &wbc
);
62 /* This is a good place to write the sb */
63 /* TODO: Sechedule an sb-sync on create */
71 static int exofs_flush(struct file
*file
, fl_owner_t id
)
73 int ret
= vfs_fsync(file
, 0);
74 /* TODO: Flush the OSD target */
78 const struct file_operations exofs_file_operations
= {
79 .llseek
= generic_file_llseek
,
81 .write
= do_sync_write
,
82 .aio_read
= generic_file_aio_read
,
83 .aio_write
= generic_file_aio_write
,
84 .mmap
= generic_file_mmap
,
85 .open
= generic_file_open
,
86 .release
= exofs_release_file
,
87 .fsync
= exofs_file_fsync
,
89 .splice_read
= generic_file_splice_read
,
90 .splice_write
= generic_file_splice_write
,
93 const struct inode_operations exofs_file_inode_operations
= {
94 .setattr
= exofs_setattr
,