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"
22 #include "jfs_inode.h"
24 #include "jfs_txnmgr.h"
25 #include "jfs_xattr.h"
27 #include "jfs_debug.h"
29 int jfs_fsync(struct file *file, struct dentry *dentry, int datasync)
31 struct inode *inode = dentry->d_inode;
34 if (!(inode->i_state & I_DIRTY) ||
35 (datasync && !(inode->i_state & I_DIRTY_DATASYNC))) {
36 /* Make sure committed changes hit the disk */
37 jfs_flush_journal(JFS_SBI(inode->i_sb)->log, 1);
41 rc |= jfs_commit_inode(inode, 1);
46 static int jfs_open(struct inode *inode, struct file *file)
50 if ((rc = generic_file_open(inode, file)))
54 * We attempt to allow only one "active" file open per aggregate
55 * group. Otherwise, appending to files in parallel can cause
56 * fragmentation within the files.
58 * If the file is empty, it was probably just created and going
59 * to be written to. If it has a size, we'll hold off until the
60 * file is actually grown.
62 if (S_ISREG(inode->i_mode) && file->f_mode & FMODE_WRITE &&
63 (inode->i_size == 0)) {
64 struct jfs_inode_info *ji = JFS_IP(inode);
65 spin_lock_irq(&ji->ag_lock);
66 if (ji->active_ag == -1) {
67 ji->active_ag = ji->agno;
69 &JFS_SBI(inode->i_sb)->bmap->db_active[ji->agno]);
71 spin_unlock_irq(&ji->ag_lock);
76 static int jfs_release(struct inode *inode, struct file *file)
78 struct jfs_inode_info *ji = JFS_IP(inode);
80 spin_lock_irq(&ji->ag_lock);
81 if (ji->active_ag != -1) {
82 struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap;
83 atomic_dec(&bmap->db_active[ji->active_ag]);
86 spin_unlock_irq(&ji->ag_lock);
91 const struct inode_operations jfs_file_inode_operations = {
92 .truncate = jfs_truncate,
93 .setxattr = jfs_setxattr,
94 .getxattr = jfs_getxattr,
95 .listxattr = jfs_listxattr,
96 .removexattr = jfs_removexattr,
97 #ifdef CONFIG_JFS_POSIX_ACL
98 .setattr = jfs_setattr,
99 .check_acl = jfs_check_acl,
103 const struct file_operations jfs_file_operations = {
105 .llseek = generic_file_llseek,
106 .write = do_sync_write,
107 .read = do_sync_read,
108 .aio_read = generic_file_aio_read,
109 .aio_write = generic_file_aio_write,
110 .mmap = generic_file_mmap,
111 .splice_read = generic_file_splice_read,
112 .splice_write = generic_file_splice_write,
114 .release = jfs_release,
115 .unlocked_ioctl = jfs_ioctl,
117 .compat_ioctl = jfs_compat_ioctl,