1 /* 2 * Copyright (c) 2008-2010, 2013 Dave Chinner 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_trans.h" 24 #include "xfs_sb.h" 25 #include "xfs_ag.h" 26 #include "xfs_mount.h" 27 #include "xfs_trans_priv.h" 28 #include "xfs_error.h" 29 #include "xfs_icreate_item.h" 30 31 kmem_zone_t *xfs_icreate_zone; /* inode create item zone */ 32 33 static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip) 34 { 35 return container_of(lip, struct xfs_icreate_item, ic_item); 36 } 37 38 /* 39 * This returns the number of iovecs needed to log the given inode item. 40 * 41 * We only need one iovec for the icreate log structure. 42 */ 43 STATIC void 44 xfs_icreate_item_size( 45 struct xfs_log_item *lip, 46 int *nvecs, 47 int *nbytes) 48 { 49 *nvecs += 1; 50 *nbytes += sizeof(struct xfs_icreate_log); 51 } 52 53 /* 54 * This is called to fill in the vector of log iovecs for the 55 * given inode create log item. 56 */ 57 STATIC void 58 xfs_icreate_item_format( 59 struct xfs_log_item *lip, 60 struct xfs_log_iovec *log_vector) 61 { 62 struct xfs_icreate_item *icp = ICR_ITEM(lip); 63 64 log_vector->i_addr = (xfs_caddr_t)&icp->ic_format; 65 log_vector->i_len = sizeof(struct xfs_icreate_log); 66 log_vector->i_type = XLOG_REG_TYPE_ICREATE; 67 } 68 69 70 /* Pinning has no meaning for the create item, so just return. */ 71 STATIC void 72 xfs_icreate_item_pin( 73 struct xfs_log_item *lip) 74 { 75 } 76 77 78 /* pinning has no meaning for the create item, so just return. */ 79 STATIC void 80 xfs_icreate_item_unpin( 81 struct xfs_log_item *lip, 82 int remove) 83 { 84 } 85 86 STATIC void 87 xfs_icreate_item_unlock( 88 struct xfs_log_item *lip) 89 { 90 struct xfs_icreate_item *icp = ICR_ITEM(lip); 91 92 if (icp->ic_item.li_flags & XFS_LI_ABORTED) 93 kmem_zone_free(xfs_icreate_zone, icp); 94 return; 95 } 96 97 /* 98 * Because we have ordered buffers being tracked in the AIL for the inode 99 * creation, we don't need the create item after this. Hence we can free 100 * the log item and return -1 to tell the caller we're done with the item. 101 */ 102 STATIC xfs_lsn_t 103 xfs_icreate_item_committed( 104 struct xfs_log_item *lip, 105 xfs_lsn_t lsn) 106 { 107 struct xfs_icreate_item *icp = ICR_ITEM(lip); 108 109 kmem_zone_free(xfs_icreate_zone, icp); 110 return (xfs_lsn_t)-1; 111 } 112 113 /* item can never get into the AIL */ 114 STATIC uint 115 xfs_icreate_item_push( 116 struct xfs_log_item *lip, 117 struct list_head *buffer_list) 118 { 119 ASSERT(0); 120 return XFS_ITEM_SUCCESS; 121 } 122 123 /* Ordered buffers do the dependency tracking here, so this does nothing. */ 124 STATIC void 125 xfs_icreate_item_committing( 126 struct xfs_log_item *lip, 127 xfs_lsn_t lsn) 128 { 129 } 130 131 /* 132 * This is the ops vector shared by all buf log items. 133 */ 134 static struct xfs_item_ops xfs_icreate_item_ops = { 135 .iop_size = xfs_icreate_item_size, 136 .iop_format = xfs_icreate_item_format, 137 .iop_pin = xfs_icreate_item_pin, 138 .iop_unpin = xfs_icreate_item_unpin, 139 .iop_push = xfs_icreate_item_push, 140 .iop_unlock = xfs_icreate_item_unlock, 141 .iop_committed = xfs_icreate_item_committed, 142 .iop_committing = xfs_icreate_item_committing, 143 }; 144 145 146 /* 147 * Initialize the inode log item for a newly allocated (in-core) inode. 148 * 149 * Inode extents can only reside within an AG. Hence specify the starting 150 * block for the inode chunk by offset within an AG as well as the 151 * length of the allocated extent. 152 * 153 * This joins the item to the transaction and marks it dirty so 154 * that we don't need a separate call to do this, nor does the 155 * caller need to know anything about the icreate item. 156 */ 157 void 158 xfs_icreate_log( 159 struct xfs_trans *tp, 160 xfs_agnumber_t agno, 161 xfs_agblock_t agbno, 162 unsigned int count, 163 unsigned int inode_size, 164 xfs_agblock_t length, 165 unsigned int generation) 166 { 167 struct xfs_icreate_item *icp; 168 169 icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP); 170 171 xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE, 172 &xfs_icreate_item_ops); 173 174 icp->ic_format.icl_type = XFS_LI_ICREATE; 175 icp->ic_format.icl_size = 1; /* single vector */ 176 icp->ic_format.icl_ag = cpu_to_be32(agno); 177 icp->ic_format.icl_agbno = cpu_to_be32(agbno); 178 icp->ic_format.icl_count = cpu_to_be32(count); 179 icp->ic_format.icl_isize = cpu_to_be32(inode_size); 180 icp->ic_format.icl_length = cpu_to_be32(length); 181 icp->ic_format.icl_gen = cpu_to_be32(generation); 182 183 xfs_trans_add_item(tp, &icp->ic_item); 184 tp->t_flags |= XFS_TRANS_DIRTY; 185 icp->ic_item.li_desc->lid_flags |= XFS_LID_DIRTY; 186 } 187