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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
Nathan Scotta844f452005-11-02 14:38:42 +110019#include "xfs_fs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include "xfs_types.h"
Nathan Scotta844f452005-11-02 14:38:42 +110021#include "xfs_bit.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include "xfs_log.h"
Nathan Scotta844f452005-11-02 14:38:42 +110023#include "xfs_inum.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include "xfs_trans.h"
25#include "xfs_sb.h"
26#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include "xfs_mount.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include "xfs_bmap_btree.h"
Nathan Scotta844f452005-11-02 14:38:42 +110029#include "xfs_alloc_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include "xfs_ialloc_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include "xfs_dinode.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include "xfs_inode.h"
Nathan Scotta844f452005-11-02 14:38:42 +110033#include "xfs_btree.h"
Nathan Scotta844f452005-11-02 14:38:42 +110034#include "xfs_trans_priv.h"
35#include "xfs_inode_item.h"
Christoph Hellwig898621d2010-06-24 11:36:58 +100036#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
38#ifdef XFS_TRANS_DEBUG
39STATIC void
40xfs_trans_inode_broot_debug(
41 xfs_inode_t *ip);
42#else
43#define xfs_trans_inode_broot_debug(ip)
44#endif
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046/*
Christoph Hellwigaa72a5c2009-08-31 21:51:52 -030047 * Get an inode and join it to the transaction.
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 */
49int
50xfs_trans_iget(
51 xfs_mount_t *mp,
52 xfs_trans_t *tp,
53 xfs_ino_t ino,
54 uint flags,
55 uint lock_flags,
56 xfs_inode_t **ipp)
57{
58 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
Dave Chinner7b6259e2010-06-24 11:35:17 +100060 error = xfs_iget(mp, tp, ino, flags, lock_flags, ipp);
Christoph Hellwig898621d2010-06-24 11:36:58 +100061 if (!error && tp) {
62 xfs_trans_ijoin(tp, *ipp);
63 (*ipp)->i_itemp->ili_lock_flags = lock_flags;
64 }
Christoph Hellwigaa72a5c2009-08-31 21:51:52 -030065 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070066}
67
68/*
Christoph Hellwig898621d2010-06-24 11:36:58 +100069 * Add a locked inode to the transaction.
70 *
71 * The inode must be locked, and it cannot be associated with any transaction.
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 */
73void
74xfs_trans_ijoin(
Christoph Hellwig898621d2010-06-24 11:36:58 +100075 struct xfs_trans *tp,
76 struct xfs_inode *ip)
Linus Torvalds1da177e2005-04-16 15:20:36 -070077{
78 xfs_inode_log_item_t *iip;
79
80 ASSERT(ip->i_transp == NULL);
Christoph Hellwig579aa9c2008-04-22 17:34:00 +100081 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 if (ip->i_itemp == NULL)
83 xfs_inode_item_init(ip, ip->i_mount);
84 iip = ip->i_itemp;
Christoph Hellwig898621d2010-06-24 11:36:58 +100085 ASSERT(iip->ili_lock_flags == 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
87 /*
88 * Get a log_item_desc to point at the new item.
89 */
Christoph Hellwige98c4142010-06-23 18:11:15 +100090 xfs_trans_add_item(tp, &iip->ili_item);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92 xfs_trans_inode_broot_debug(ip);
93
94 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 * Initialize i_transp so we can find it with xfs_inode_incore()
96 * in xfs_trans_iget() above.
97 */
98 ip->i_transp = tp;
99}
100
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101/*
Christoph Hellwig898621d2010-06-24 11:36:58 +1000102 * Add a locked inode to the transaction.
103 *
104 *
105 * Grabs a reference to the inode which will be dropped when the transaction
106 * is commited. The inode will also be unlocked at that point. The inode
107 * must be locked, and it cannot be associated with any transaction.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109void
Christoph Hellwig898621d2010-06-24 11:36:58 +1000110xfs_trans_ijoin_ref(
111 struct xfs_trans *tp,
112 struct xfs_inode *ip,
113 uint lock_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114{
Christoph Hellwig898621d2010-06-24 11:36:58 +1000115 xfs_trans_ijoin(tp, ip);
116 IHOLD(ip);
117 ip->i_itemp->ili_lock_flags = lock_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118}
119
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120/*
121 * This is called to mark the fields indicated in fieldmask as needing
122 * to be logged when the transaction is committed. The inode must
123 * already be associated with the given transaction.
124 *
125 * The values for fieldmask are defined in xfs_inode_item.h. We always
126 * log all of the core inode if any of it has changed, and we always log
127 * all of the inline data/extents/b-tree root if any of them has changed.
128 */
129void
130xfs_trans_log_inode(
131 xfs_trans_t *tp,
132 xfs_inode_t *ip,
133 uint flags)
134{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 ASSERT(ip->i_transp == tp);
136 ASSERT(ip->i_itemp != NULL);
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000137 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 tp->t_flags |= XFS_TRANS_DIRTY;
Christoph Hellwige98c4142010-06-23 18:11:15 +1000140 ip->i_itemp->ili_item.li_desc->lid_flags |= XFS_LID_DIRTY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
142 /*
143 * Always OR in the bits from the ili_last_fields field.
144 * This is to coordinate with the xfs_iflush() and xfs_iflush_done()
145 * routines in the eventual clearing of the ilf_fields bits.
146 * See the big comment in xfs_iflush() for an explanation of
Nathan Scottc41564b2006-03-29 08:55:14 +1000147 * this coordination mechanism.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 */
149 flags |= ip->i_itemp->ili_last_fields;
150 ip->i_itemp->ili_format.ilf_fields |= flags;
151}
152
153#ifdef XFS_TRANS_DEBUG
154/*
155 * Keep track of the state of the inode btree root to make sure we
156 * log it properly.
157 */
158STATIC void
159xfs_trans_inode_broot_debug(
160 xfs_inode_t *ip)
161{
162 xfs_inode_log_item_t *iip;
163
164 ASSERT(ip->i_itemp != NULL);
165 iip = ip->i_itemp;
166 if (iip->ili_root_size != 0) {
167 ASSERT(iip->ili_orig_root != NULL);
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000168 kmem_free(iip->ili_orig_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 iip->ili_root_size = 0;
170 iip->ili_orig_root = NULL;
171 }
172 if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
173 ASSERT((ip->i_df.if_broot != NULL) &&
174 (ip->i_df.if_broot_bytes > 0));
175 iip->ili_root_size = ip->i_df.if_broot_bytes;
176 iip->ili_orig_root =
177 (char*)kmem_alloc(iip->ili_root_size, KM_SLEEP);
178 memcpy(iip->ili_orig_root, (char*)(ip->i_df.if_broot),
179 iip->ili_root_size);
180 }
181}
182#endif