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_bit.h" 22#include "xfs_log.h" 23#include "xfs_inum.h" 24#include "xfs_trans.h" 25#include "xfs_sb.h" 26#include "xfs_ag.h" 27#include "xfs_mount.h" 28#include "xfs_bmap_btree.h" 29#include "xfs_alloc_btree.h" 30#include "xfs_ialloc_btree.h" 31#include "xfs_dinode.h" 32#include "xfs_inode.h" 33#include "xfs_btree.h" 34#include "xfs_trans_priv.h" 35#include "xfs_inode_item.h" 36#include "xfs_trace.h" 37 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 46/* 47 * Get an inode and join it to the transaction. 48 */ 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; 59 60 error = xfs_iget(mp, tp, ino, flags, lock_flags, ipp); 61 if (!error && tp) { 62 xfs_trans_ijoin(tp, *ipp); 63 (*ipp)->i_itemp->ili_lock_flags = lock_flags; 64 } 65 return error; 66} 67 68/* 69 * Add a locked inode to the transaction. 70 * 71 * The inode must be locked, and it cannot be associated with any transaction. 72 */ 73void 74xfs_trans_ijoin( 75 struct xfs_trans *tp, 76 struct xfs_inode *ip) 77{ 78 xfs_inode_log_item_t *iip; 79 80 ASSERT(ip->i_transp == NULL); 81 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 82 if (ip->i_itemp == NULL) 83 xfs_inode_item_init(ip, ip->i_mount); 84 iip = ip->i_itemp; 85 ASSERT(iip->ili_lock_flags == 0); 86 87 /* 88 * Get a log_item_desc to point at the new item. 89 */ 90 xfs_trans_add_item(tp, &iip->ili_item); 91 92 xfs_trans_inode_broot_debug(ip); 93 94 /* 95 * 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} 100 101/* 102 * 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. 108 */ 109void 110xfs_trans_ijoin_ref( 111 struct xfs_trans *tp, 112 struct xfs_inode *ip, 113 uint lock_flags) 114{ 115 xfs_trans_ijoin(tp, ip); 116 IHOLD(ip); 117 ip->i_itemp->ili_lock_flags = lock_flags; 118} 119 120/* 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{ 135 ASSERT(ip->i_transp == tp); 136 ASSERT(ip->i_itemp != NULL); 137 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 138 139 tp->t_flags |= XFS_TRANS_DIRTY; 140 ip->i_itemp->ili_item.li_desc->lid_flags |= XFS_LID_DIRTY; 141 142 /* 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 147 * this coordination mechanism. 148 */ 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); 168 kmem_free(iip->ili_orig_root); 169 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 183