2 * Copyright (c) International Business Machines Corp., 2000-2002
3 * Portions Copyright (c) Christoph Hellwig, 2001-2002
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "jfs_incore.h"
23 #include "jfs_txnmgr.h"
24 #include "jfs_xattr.h"
26 #include "jfs_debug.h"
29 extern int jfs_commit_inode(struct inode
*, int);
30 extern void jfs_truncate(struct inode
*);
32 int jfs_fsync(struct file
*file
, struct dentry
*dentry
, int datasync
)
34 struct inode
*inode
= dentry
->d_inode
;
37 if (!(inode
->i_state
& I_DIRTY
))
39 if (datasync
&& !(inode
->i_state
& I_DIRTY_DATASYNC
))
42 rc
|= jfs_commit_inode(inode
, 1);
47 static int jfs_open(struct inode
*inode
, struct file
*file
)
51 if ((rc
= generic_file_open(inode
, file
)))
55 * We attempt to allow only one "active" file open per aggregate
56 * group. Otherwise, appending to files in parallel can cause
57 * fragmentation within the files.
59 * If the file is empty, it was probably just created and going
60 * to be written to. If it has a size, we'll hold off until the
61 * file is actually grown.
63 if (S_ISREG(inode
->i_mode
) && file
->f_mode
& FMODE_WRITE
&&
64 (inode
->i_size
== 0)) {
65 struct jfs_inode_info
*ji
= JFS_IP(inode
);
66 if (ji
->active_ag
== -1) {
67 ji
->active_ag
= ji
->agno
;
69 &JFS_SBI(inode
->i_sb
)->bmap
->db_active
[ji
->agno
]);
75 static int jfs_release(struct inode
*inode
, struct file
*file
)
77 struct jfs_inode_info
*ji
= JFS_IP(inode
);
79 if (ji
->active_ag
!= -1) {
80 struct bmap
*bmap
= JFS_SBI(inode
->i_sb
)->bmap
;
81 atomic_dec(&bmap
->db_active
[ji
->active_ag
]);
88 struct inode_operations jfs_file_inode_operations
= {
89 .truncate
= jfs_truncate
,
90 .setxattr
= jfs_setxattr
,
91 .getxattr
= jfs_getxattr
,
92 .listxattr
= jfs_listxattr
,
93 .removexattr
= jfs_removexattr
,
94 #ifdef CONFIG_JFS_POSIX_ACL
95 .setattr
= jfs_setattr
,
96 .permission
= jfs_permission
,
100 struct file_operations jfs_file_operations
= {
102 .llseek
= generic_file_llseek
,
103 .write
= generic_file_write
,
104 .read
= generic_file_read
,
105 .aio_read
= generic_file_aio_read
,
106 .aio_write
= generic_file_aio_write
,
107 .mmap
= generic_file_mmap
,
108 .readv
= generic_file_readv
,
109 .writev
= generic_file_writev
,
110 .sendfile
= generic_file_sendfile
,
112 .release
= jfs_release
,