1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6 #include "xfs.h"
7 #include "xfs_fs.h"
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
12 #include "xfs_mount.h"
13 #include "xfs_inode.h"
14 #include "xfs_trans.h"
15 #include "xfs_trans_priv.h"
16 #include "xfs_inode_item.h"
17
18 #include <linux/iversion.h>
19
20 /*
21 * Add a locked inode to the transaction.
22 *
23 * The inode must be locked, and it cannot be associated with any transaction.
24 * If lock_flags is non-zero the inode will be unlocked on transaction commit.
25 */
26 void
xfs_trans_ijoin(struct xfs_trans * tp,struct xfs_inode * ip,uint lock_flags)27 xfs_trans_ijoin(
28 struct xfs_trans *tp,
29 struct xfs_inode *ip,
30 uint lock_flags)
31 {
32 struct xfs_inode_log_item *iip;
33
34 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
35 if (ip->i_itemp == NULL)
36 xfs_inode_item_init(ip, ip->i_mount);
37 iip = ip->i_itemp;
38
39 ASSERT(iip->ili_lock_flags == 0);
40 iip->ili_lock_flags = lock_flags;
41 ASSERT(!xfs_iflags_test(ip, XFS_ISTALE));
42
43 /* Reset the per-tx dirty context and add the item to the tx. */
44 iip->ili_dirty_flags = 0;
45 xfs_trans_add_item(tp, &iip->ili_item);
46 }
47
48 /*
49 * Transactional inode timestamp update. Requires the inode to be locked and
50 * joined to the transaction supplied. Relies on the transaction subsystem to
51 * track dirty state and update/writeback the inode accordingly.
52 */
53 void
xfs_trans_ichgtime(struct xfs_trans * tp,struct xfs_inode * ip,int flags)54 xfs_trans_ichgtime(
55 struct xfs_trans *tp,
56 struct xfs_inode *ip,
57 int flags)
58 {
59 struct inode *inode = VFS_I(ip);
60 struct timespec64 tv;
61
62 ASSERT(tp);
63 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
64
65 tv = current_time(inode);
66
67 if (flags & XFS_ICHGTIME_MOD)
68 inode->i_mtime = tv;
69 if (flags & XFS_ICHGTIME_CHG)
70 inode_set_ctime_to_ts(inode, tv);
71 if (flags & XFS_ICHGTIME_CREATE)
72 ip->i_crtime = tv;
73 }
74
75 /*
76 * This is called to mark the fields indicated in fieldmask as needing to be
77 * logged when the transaction is committed. The inode must already be
78 * associated with the given transaction. All we do here is record where the
79 * inode was dirtied and mark the transaction and inode log item dirty;
80 * everything else is done in the ->precommit log item operation after the
81 * changes in the transaction have been completed.
82 */
83 void
xfs_trans_log_inode(struct xfs_trans * tp,struct xfs_inode * ip,uint flags)84 xfs_trans_log_inode(
85 struct xfs_trans *tp,
86 struct xfs_inode *ip,
87 uint flags)
88 {
89 struct xfs_inode_log_item *iip = ip->i_itemp;
90 struct inode *inode = VFS_I(ip);
91
92 ASSERT(iip);
93 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
94 ASSERT(!xfs_iflags_test(ip, XFS_ISTALE));
95
96 tp->t_flags |= XFS_TRANS_DIRTY;
97
98 /*
99 * First time we log the inode in a transaction, bump the inode change
100 * counter if it is configured for this to occur. While we have the
101 * inode locked exclusively for metadata modification, we can usually
102 * avoid setting XFS_ILOG_CORE if no one has queried the value since
103 * the last time it was incremented. If we have XFS_ILOG_CORE already
104 * set however, then go ahead and bump the i_version counter
105 * unconditionally.
106 */
107 if (!test_and_set_bit(XFS_LI_DIRTY, &iip->ili_item.li_flags)) {
108 if (IS_I_VERSION(inode) &&
109 inode_maybe_inc_iversion(inode, flags & XFS_ILOG_CORE))
110 flags |= XFS_ILOG_IVERSION;
111 }
112
113 iip->ili_dirty_flags |= flags;
114 }
115
116 int
xfs_trans_roll_inode(struct xfs_trans ** tpp,struct xfs_inode * ip)117 xfs_trans_roll_inode(
118 struct xfs_trans **tpp,
119 struct xfs_inode *ip)
120 {
121 int error;
122
123 xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE);
124 error = xfs_trans_roll(tpp);
125 if (!error)
126 xfs_trans_ijoin(*tpp, ip, 0);
127 return error;
128 }
129