1 /*
2 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18 #include "xfs.h"
19 #include "xfs_fs.h"
20 #include "xfs_types.h"
21 #include "xfs_log.h"
22 #include "xfs_trans.h"
23 #include "xfs_sb.h"
24 #include "xfs_ag.h"
25 #include "xfs_mount.h"
26 #include "xfs_bmap_btree.h"
27 #include "xfs_alloc_btree.h"
28 #include "xfs_ialloc_btree.h"
29 #include "xfs_dinode.h"
30 #include "xfs_inode.h"
31 #include "xfs_btree.h"
32 #include "xfs_trans_priv.h"
33 #include "xfs_inode_item.h"
34 #include "xfs_trace.h"
35
36 /*
37 * Add a locked inode to the transaction.
38 *
39 * The inode must be locked, and it cannot be associated with any transaction.
40 * If lock_flags is non-zero the inode will be unlocked on transaction commit.
41 */
42 void
xfs_trans_ijoin(struct xfs_trans * tp,struct xfs_inode * ip,uint lock_flags)43 xfs_trans_ijoin(
44 struct xfs_trans *tp,
45 struct xfs_inode *ip,
46 uint lock_flags)
47 {
48 xfs_inode_log_item_t *iip;
49
50 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
51 if (ip->i_itemp == NULL)
52 xfs_inode_item_init(ip, ip->i_mount);
53 iip = ip->i_itemp;
54
55 ASSERT(iip->ili_lock_flags == 0);
56 iip->ili_lock_flags = lock_flags;
57
58 /*
59 * Get a log_item_desc to point at the new item.
60 */
61 xfs_trans_add_item(tp, &iip->ili_item);
62 }
63
64 /*
65 * Transactional inode timestamp update. Requires the inode to be locked and
66 * joined to the transaction supplied. Relies on the transaction subsystem to
67 * track dirty state and update/writeback the inode accordingly.
68 */
69 void
xfs_trans_ichgtime(struct xfs_trans * tp,struct xfs_inode * ip,int flags)70 xfs_trans_ichgtime(
71 struct xfs_trans *tp,
72 struct xfs_inode *ip,
73 int flags)
74 {
75 struct inode *inode = VFS_I(ip);
76 timespec_t tv;
77
78 ASSERT(tp);
79 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
80
81 tv = current_fs_time(inode->i_sb);
82
83 if ((flags & XFS_ICHGTIME_MOD) &&
84 !timespec_equal(&inode->i_mtime, &tv)) {
85 inode->i_mtime = tv;
86 ip->i_d.di_mtime.t_sec = tv.tv_sec;
87 ip->i_d.di_mtime.t_nsec = tv.tv_nsec;
88 }
89 if ((flags & XFS_ICHGTIME_CHG) &&
90 !timespec_equal(&inode->i_ctime, &tv)) {
91 inode->i_ctime = tv;
92 ip->i_d.di_ctime.t_sec = tv.tv_sec;
93 ip->i_d.di_ctime.t_nsec = tv.tv_nsec;
94 }
95 }
96
97 /*
98 * This is called to mark the fields indicated in fieldmask as needing
99 * to be logged when the transaction is committed. The inode must
100 * already be associated with the given transaction.
101 *
102 * The values for fieldmask are defined in xfs_inode_item.h. We always
103 * log all of the core inode if any of it has changed, and we always log
104 * all of the inline data/extents/b-tree root if any of them has changed.
105 */
106 void
xfs_trans_log_inode(xfs_trans_t * tp,xfs_inode_t * ip,uint flags)107 xfs_trans_log_inode(
108 xfs_trans_t *tp,
109 xfs_inode_t *ip,
110 uint flags)
111 {
112 ASSERT(ip->i_itemp != NULL);
113 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
114
115 tp->t_flags |= XFS_TRANS_DIRTY;
116 ip->i_itemp->ili_item.li_desc->lid_flags |= XFS_LID_DIRTY;
117
118 /*
119 * Always OR in the bits from the ili_last_fields field.
120 * This is to coordinate with the xfs_iflush() and xfs_iflush_done()
121 * routines in the eventual clearing of the ili_fields bits.
122 * See the big comment in xfs_iflush() for an explanation of
123 * this coordination mechanism.
124 */
125 flags |= ip->i_itemp->ili_last_fields;
126 ip->i_itemp->ili_fields |= flags;
127 }
128