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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000,2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 | 6 | #include "xfs.h" |
a844f451 | 7 | #include "xfs_fs.h" |
70a9883c | 8 | #include "xfs_shared.h" |
a4fbe6ab | 9 | #include "xfs_format.h" |
239880ef | 10 | #include "xfs_log_format.h" |
298f7bec DC |
11 | #include "xfs_trans_resv.h" |
12 | #include "xfs_mount.h" | |
1da177e4 | 13 | #include "xfs_inode.h" |
239880ef | 14 | #include "xfs_trans.h" |
a844f451 NS |
15 | #include "xfs_trans_priv.h" |
16 | #include "xfs_inode_item.h" | |
1da177e4 | 17 | |
f0e28280 JL |
18 | #include <linux/iversion.h> |
19 | ||
1da177e4 | 20 | /* |
898621d5 CH |
21 | * Add a locked inode to the transaction. |
22 | * | |
23 | * The inode must be locked, and it cannot be associated with any transaction. | |
ddc3415a | 24 | * If lock_flags is non-zero the inode will be unlocked on transaction commit. |
1da177e4 LT |
25 | */ |
26 | void | |
27 | xfs_trans_ijoin( | |
898621d5 | 28 | struct xfs_trans *tp, |
ddc3415a CH |
29 | struct xfs_inode *ip, |
30 | uint lock_flags) | |
1da177e4 | 31 | { |
fd9cbe51 | 32 | struct xfs_inode_log_item *iip; |
1da177e4 | 33 | |
579aa9ca | 34 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
35 | if (ip->i_itemp == NULL) |
36 | xfs_inode_item_init(ip, ip->i_mount); | |
37 | iip = ip->i_itemp; | |
ddc3415a | 38 | |
898621d5 | 39 | ASSERT(iip->ili_lock_flags == 0); |
ddc3415a | 40 | iip->ili_lock_flags = lock_flags; |
96355d5a | 41 | ASSERT(!xfs_iflags_test(ip, XFS_ISTALE)); |
1da177e4 LT |
42 | |
43 | /* | |
44 | * Get a log_item_desc to point at the new item. | |
45 | */ | |
e98c414f | 46 | xfs_trans_add_item(tp, &iip->ili_item); |
1da177e4 LT |
47 | } |
48 | ||
dcd79a14 DC |
49 | /* |
50 | * Transactional inode timestamp update. Requires the inode to be locked and | |
51 | * joined to the transaction supplied. Relies on the transaction subsystem to | |
52 | * track dirty state and update/writeback the inode accordingly. | |
53 | */ | |
54 | void | |
55 | xfs_trans_ichgtime( | |
56 | struct xfs_trans *tp, | |
57 | struct xfs_inode *ip, | |
58 | int flags) | |
59 | { | |
60 | struct inode *inode = VFS_I(ip); | |
8d2d878d | 61 | struct timespec64 tv; |
dcd79a14 DC |
62 | |
63 | ASSERT(tp); | |
64 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
dcd79a14 | 65 | |
c2050a45 | 66 | tv = current_time(inode); |
dcd79a14 | 67 | |
3987848c | 68 | if (flags & XFS_ICHGTIME_MOD) |
dcd79a14 | 69 | inode->i_mtime = tv; |
3987848c | 70 | if (flags & XFS_ICHGTIME_CHG) |
dcd79a14 | 71 | inode->i_ctime = tv; |
8d2d878d CH |
72 | if (flags & XFS_ICHGTIME_CREATE) |
73 | ip->i_d.di_crtime = tv; | |
dcd79a14 DC |
74 | } |
75 | ||
1da177e4 | 76 | /* |
298f7bec DC |
77 | * This is called to mark the fields indicated in fieldmask as needing to be |
78 | * logged when the transaction is committed. The inode must already be | |
79 | * associated with the given transaction. | |
1da177e4 | 80 | * |
298f7bec DC |
81 | * The values for fieldmask are defined in xfs_inode_item.h. We always log all |
82 | * of the core inode if any of it has changed, and we always log all of the | |
83 | * inline data/extents/b-tree root if any of them has changed. | |
84 | * | |
85 | * Grab and pin the cluster buffer associated with this inode to avoid RMW | |
86 | * cycles at inode writeback time. Avoid the need to add error handling to every | |
87 | * xfs_trans_log_inode() call by shutting down on read error. This will cause | |
88 | * transactions to fail and everything to error out, just like if we return a | |
89 | * read error in a dirty transaction and cancel it. | |
1da177e4 LT |
90 | */ |
91 | void | |
92 | xfs_trans_log_inode( | |
1319ebef DC |
93 | struct xfs_trans *tp, |
94 | struct xfs_inode *ip, | |
95 | uint flags) | |
1da177e4 | 96 | { |
1319ebef DC |
97 | struct xfs_inode_log_item *iip = ip->i_itemp; |
98 | struct inode *inode = VFS_I(ip); | |
99 | uint iversion_flags = 0; | |
c3b1b131 | 100 | |
1319ebef | 101 | ASSERT(iip); |
579aa9ca | 102 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
96355d5a | 103 | ASSERT(!xfs_iflags_test(ip, XFS_ISTALE)); |
1da177e4 | 104 | |
1319ebef DC |
105 | tp->t_flags |= XFS_TRANS_DIRTY; |
106 | ||
c3b1b131 CH |
107 | /* |
108 | * Don't bother with i_lock for the I_DIRTY_TIME check here, as races | |
109 | * don't matter - we either will need an extra transaction in 24 hours | |
110 | * to log the timestamps, or will clear already cleared fields in the | |
111 | * worst case. | |
112 | */ | |
5fcd5750 | 113 | if (inode->i_state & I_DIRTY_TIME) { |
c3b1b131 | 114 | spin_lock(&inode->i_lock); |
5fcd5750 | 115 | inode->i_state &= ~I_DIRTY_TIME; |
c3b1b131 CH |
116 | spin_unlock(&inode->i_lock); |
117 | } | |
118 | ||
dc037ad7 DC |
119 | /* |
120 | * First time we log the inode in a transaction, bump the inode change | |
d17260fd JL |
121 | * counter if it is configured for this to occur. While we have the |
122 | * inode locked exclusively for metadata modification, we can usually | |
123 | * avoid setting XFS_ILOG_CORE if no one has queried the value since | |
124 | * the last time it was incremented. If we have XFS_ILOG_CORE already | |
125 | * set however, then go ahead and bump the i_version counter | |
126 | * unconditionally. | |
dc037ad7 | 127 | */ |
1319ebef DC |
128 | if (!test_and_set_bit(XFS_LI_DIRTY, &iip->ili_item.li_flags)) { |
129 | if (IS_I_VERSION(inode) && | |
130 | inode_maybe_inc_iversion(inode, flags & XFS_ILOG_CORE)) | |
131 | iversion_flags = XFS_ILOG_CORE; | |
dc037ad7 DC |
132 | } |
133 | ||
1319ebef DC |
134 | /* |
135 | * Record the specific change for fdatasync optimisation. This allows | |
136 | * fdatasync to skip log forces for inodes that are only timestamp | |
137 | * dirty. | |
138 | */ | |
139 | spin_lock(&iip->ili_lock); | |
140 | iip->ili_fsync_fields |= flags; | |
1da177e4 | 141 | |
298f7bec DC |
142 | if (!iip->ili_item.li_buf) { |
143 | struct xfs_buf *bp; | |
144 | int error; | |
145 | ||
146 | /* | |
147 | * We hold the ILOCK here, so this inode is not going to be | |
148 | * flushed while we are here. Further, because there is no | |
149 | * buffer attached to the item, we know that there is no IO in | |
150 | * progress, so nothing will clear the ili_fields while we read | |
151 | * in the buffer. Hence we can safely drop the spin lock and | |
152 | * read the buffer knowing that the state will not change from | |
153 | * here. | |
154 | */ | |
155 | spin_unlock(&iip->ili_lock); | |
156 | error = xfs_imap_to_bp(ip->i_mount, tp, &ip->i_imap, NULL, | |
157 | &bp, 0); | |
158 | if (error) { | |
159 | xfs_force_shutdown(ip->i_mount, SHUTDOWN_META_IO_ERROR); | |
160 | return; | |
161 | } | |
162 | ||
163 | /* | |
164 | * We need an explicit buffer reference for the log item but | |
165 | * don't want the buffer to remain attached to the transaction. | |
48d55e2a DC |
166 | * Hold the buffer but release the transaction reference once |
167 | * we've attached the inode log item to the buffer log item | |
168 | * list. | |
298f7bec DC |
169 | */ |
170 | xfs_buf_hold(bp); | |
298f7bec DC |
171 | spin_lock(&iip->ili_lock); |
172 | iip->ili_item.li_buf = bp; | |
48d55e2a DC |
173 | bp->b_flags |= _XBF_INODES; |
174 | list_add_tail(&iip->ili_item.li_bio_list, &bp->b_li_list); | |
175 | xfs_trans_brelse(tp, bp); | |
298f7bec DC |
176 | } |
177 | ||
1da177e4 | 178 | /* |
1319ebef | 179 | * Always OR in the bits from the ili_last_fields field. This is to |
664ffb8a CH |
180 | * coordinate with the xfs_iflush() and xfs_buf_inode_iodone() routines |
181 | * in the eventual clearing of the ili_fields bits. See the big comment | |
182 | * in xfs_iflush() for an explanation of this coordination mechanism. | |
1da177e4 | 183 | */ |
1319ebef DC |
184 | iip->ili_fields |= (flags | iip->ili_last_fields | iversion_flags); |
185 | spin_unlock(&iip->ili_lock); | |
1da177e4 | 186 | } |
411350df CH |
187 | |
188 | int | |
189 | xfs_trans_roll_inode( | |
190 | struct xfs_trans **tpp, | |
191 | struct xfs_inode *ip) | |
192 | { | |
193 | int error; | |
194 | ||
195 | xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE); | |
196 | error = xfs_trans_roll(tpp); | |
197 | if (!error) | |
198 | xfs_trans_ijoin(*tpp, ip, 0); | |
199 | return error; | |
200 | } |