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_shared.h" 21 #include "xfs_log_format.h" 22 #include "xfs_trans_resv.h" 23 #include "xfs_bit.h" 24 #include "xfs_sb.h" 25 #include "xfs_ag.h" 26 #include "xfs_mount.h" 27 #include "xfs_trans.h" 28 #include "xfs_trans_priv.h" 29 #include "xfs_error.h" 30 #include "xfs_icreate_item.h" 31 #include "xfs_log.h" 32 33 kmem_zone_t *xfs_icreate_zone; /* inode create item zone */ 34 35 static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip) 36 { 37 return container_of(lip, struct xfs_icreate_item, ic_item); 38 } 39 40 /* 41 * This returns the number of iovecs needed to log the given inode item. 42 * 43 * We only need one iovec for the icreate log structure. 44 */ 45 STATIC void 46 xfs_icreate_item_size( 47 struct xfs_log_item *lip, 48 int *nvecs, 49 int *nbytes) 50 { 51 *nvecs += 1; 52 *nbytes += sizeof(struct xfs_icreate_log); 53 } 54 55 /* 56 * This is called to fill in the vector of log iovecs for the 57 * given inode create log item. 58 */ 59 STATIC void 60 xfs_icreate_item_format( 61 struct xfs_log_item *lip, 62 struct xfs_log_vec *lv) 63 { 64 struct xfs_icreate_item *icp = ICR_ITEM(lip); 65 struct xfs_log_iovec *vecp = NULL; 66 67 xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE, 68 &icp->ic_format, 69 sizeof(struct xfs_icreate_log)); 70 } 71 72 73 /* Pinning has no meaning for the create item, so just return. */ 74 STATIC void 75 xfs_icreate_item_pin( 76 struct xfs_log_item *lip) 77 { 78 } 79 80 81 /* pinning has no meaning for the create item, so just return. */ 82 STATIC void 83 xfs_icreate_item_unpin( 84 struct xfs_log_item *lip, 85 int remove) 86 { 87 } 88 89 STATIC void 90 xfs_icreate_item_unlock( 91 struct xfs_log_item *lip) 92 { 93 struct xfs_icreate_item *icp = ICR_ITEM(lip); 94 95 if (icp->ic_item.li_flags & XFS_LI_ABORTED) 96 kmem_zone_free(xfs_icreate_zone, icp); 97 return; 98 } 99 100 /* 101 * Because we have ordered buffers being tracked in the AIL for the inode 102 * creation, we don't need the create item after this. Hence we can free 103 * the log item and return -1 to tell the caller we're done with the item. 104 */ 105 STATIC xfs_lsn_t 106 xfs_icreate_item_committed( 107 struct xfs_log_item *lip, 108 xfs_lsn_t lsn) 109 { 110 struct xfs_icreate_item *icp = ICR_ITEM(lip); 111 112 kmem_zone_free(xfs_icreate_zone, icp); 113 return (xfs_lsn_t)-1; 114 } 115 116 /* item can never get into the AIL */ 117 STATIC uint 118 xfs_icreate_item_push( 119 struct xfs_log_item *lip, 120 struct list_head *buffer_list) 121 { 122 ASSERT(0); 123 return XFS_ITEM_SUCCESS; 124 } 125 126 /* Ordered buffers do the dependency tracking here, so this does nothing. */ 127 STATIC void 128 xfs_icreate_item_committing( 129 struct xfs_log_item *lip, 130 xfs_lsn_t lsn) 131 { 132 } 133 134 /* 135 * This is the ops vector shared by all buf log items. 136 */ 137 static struct xfs_item_ops xfs_icreate_item_ops = { 138 .iop_size = xfs_icreate_item_size, 139 .iop_format = xfs_icreate_item_format, 140 .iop_pin = xfs_icreate_item_pin, 141 .iop_unpin = xfs_icreate_item_unpin, 142 .iop_push = xfs_icreate_item_push, 143 .iop_unlock = xfs_icreate_item_unlock, 144 .iop_committed = xfs_icreate_item_committed, 145 .iop_committing = xfs_icreate_item_committing, 146 }; 147 148 149 /* 150 * Initialize the inode log item for a newly allocated (in-core) inode. 151 * 152 * Inode extents can only reside within an AG. Hence specify the starting 153 * block for the inode chunk by offset within an AG as well as the 154 * length of the allocated extent. 155 * 156 * This joins the item to the transaction and marks it dirty so 157 * that we don't need a separate call to do this, nor does the 158 * caller need to know anything about the icreate item. 159 */ 160 void 161 xfs_icreate_log( 162 struct xfs_trans *tp, 163 xfs_agnumber_t agno, 164 xfs_agblock_t agbno, 165 unsigned int count, 166 unsigned int inode_size, 167 xfs_agblock_t length, 168 unsigned int generation) 169 { 170 struct xfs_icreate_item *icp; 171 172 icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP); 173 174 xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE, 175 &xfs_icreate_item_ops); 176 177 icp->ic_format.icl_type = XFS_LI_ICREATE; 178 icp->ic_format.icl_size = 1; /* single vector */ 179 icp->ic_format.icl_ag = cpu_to_be32(agno); 180 icp->ic_format.icl_agbno = cpu_to_be32(agbno); 181 icp->ic_format.icl_count = cpu_to_be32(count); 182 icp->ic_format.icl_isize = cpu_to_be32(inode_size); 183 icp->ic_format.icl_length = cpu_to_be32(length); 184 icp->ic_format.icl_gen = cpu_to_be32(generation); 185 186 xfs_trans_add_item(tp, &icp->ic_item); 187 tp->t_flags |= XFS_TRANS_DIRTY; 188 icp->ic_item.li_desc->lid_flags |= XFS_LID_DIRTY; 189 } 190