2 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
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.
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.
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
20 #include "xfs_shared.h"
21 #include "xfs_format.h"
22 #include "xfs_log_format.h"
23 #include "xfs_trans_resv.h"
24 #include "xfs_mount.h"
25 #include "xfs_inode.h"
26 #include "xfs_trans.h"
27 #include "xfs_trans_priv.h"
28 #include "xfs_inode_item.h"
29 #include "xfs_trace.h"
32 * Add a locked inode to the transaction.
34 * The inode must be locked, and it cannot be associated with any transaction.
35 * If lock_flags is non-zero the inode will be unlocked on transaction commit.
43 xfs_inode_log_item_t *iip;
45 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
46 if (ip->i_itemp == NULL)
47 xfs_inode_item_init(ip, ip->i_mount);
50 ASSERT(iip->ili_lock_flags == 0);
51 iip->ili_lock_flags = lock_flags;
54 * Get a log_item_desc to point at the new item.
56 xfs_trans_add_item(tp, &iip->ili_item);
60 * Transactional inode timestamp update. Requires the inode to be locked and
61 * joined to the transaction supplied. Relies on the transaction subsystem to
62 * track dirty state and update/writeback the inode accordingly.
70 struct inode *inode = VFS_I(ip);
74 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
76 tv = current_time(inode);
78 if (flags & XFS_ICHGTIME_MOD)
80 if (flags & XFS_ICHGTIME_CHG)
85 * This is called to mark the fields indicated in fieldmask as needing
86 * to be logged when the transaction is committed. The inode must
87 * already be associated with the given transaction.
89 * The values for fieldmask are defined in xfs_inode_item.h. We always
90 * log all of the core inode if any of it has changed, and we always log
91 * all of the inline data/extents/b-tree root if any of them has changed.
99 ASSERT(ip->i_itemp != NULL);
100 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
103 * Record the specific change for fdatasync optimisation. This
104 * allows fdatasync to skip log forces for inodes that are only
105 * timestamp dirty. We do this before the change count so that
106 * the core being logged in this case does not impact on fdatasync
109 ip->i_itemp->ili_fsync_fields |= flags;
112 * First time we log the inode in a transaction, bump the inode change
113 * counter if it is configured for this to occur. We don't use
114 * inode_inc_version() because there is no need for extra locking around
115 * i_version as we already hold the inode locked exclusively for
116 * metadata modification.
118 if (!(ip->i_itemp->ili_item.li_desc->lid_flags & XFS_LID_DIRTY) &&
119 IS_I_VERSION(VFS_I(ip))) {
120 VFS_I(ip)->i_version++;
121 flags |= XFS_ILOG_CORE;
124 tp->t_flags |= XFS_TRANS_DIRTY;
125 ip->i_itemp->ili_item.li_desc->lid_flags |= XFS_LID_DIRTY;
128 * Always OR in the bits from the ili_last_fields field.
129 * This is to coordinate with the xfs_iflush() and xfs_iflush_done()
130 * routines in the eventual clearing of the ili_fields bits.
131 * See the big comment in xfs_iflush() for an explanation of
132 * this coordination mechanism.
134 flags |= ip->i_itemp->ili_last_fields;
135 ip->i_itemp->ili_fields |= flags;