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_inum.h" 24 #include "xfs_trans.h" 25 #include "xfs_buf_item.h" 26 #include "xfs_sb.h" 27 #include "xfs_ag.h" 28 #include "xfs_dir2.h" 29 #include "xfs_mount.h" 30 #include "xfs_trans_priv.h" 31 #include "xfs_bmap_btree.h" 32 #include "xfs_alloc_btree.h" 33 #include "xfs_ialloc_btree.h" 34 #include "xfs_attr_sf.h" 35 #include "xfs_dinode.h" 36 #include "xfs_inode.h" 37 #include "xfs_inode_item.h" 38 #include "xfs_btree.h" 39 #include "xfs_ialloc.h" 40 #include "xfs_error.h" 41 #include "xfs_icreate_item.h" 42 43 kmem_zone_t *xfs_icreate_zone; /* inode create item zone */ 44 45 static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip) 46 { 47 return container_of(lip, struct xfs_icreate_item, ic_item); 48 } 49 50 /* 51 * This returns the number of iovecs needed to log the given inode item. 52 * 53 * We only need one iovec for the icreate log structure. 54 */ 55 STATIC uint 56 xfs_icreate_item_size( 57 struct xfs_log_item *lip) 58 { 59 return 1; 60 } 61 62 /* 63 * This is called to fill in the vector of log iovecs for the 64 * given inode create log item. 65 */ 66 STATIC void 67 xfs_icreate_item_format( 68 struct xfs_log_item *lip, 69 struct xfs_log_iovec *log_vector) 70 { 71 struct xfs_icreate_item *icp = ICR_ITEM(lip); 72 73 log_vector->i_addr = (xfs_caddr_t)&icp->ic_format; 74 log_vector->i_len = sizeof(struct xfs_icreate_log); 75 log_vector->i_type = XLOG_REG_TYPE_ICREATE; 76 } 77 78 79 /* Pinning has no meaning for the create item, so just return. */ 80 STATIC void 81 xfs_icreate_item_pin( 82 struct xfs_log_item *lip) 83 { 84 } 85 86 87 /* pinning has no meaning for the create item, so just return. */ 88 STATIC void 89 xfs_icreate_item_unpin( 90 struct xfs_log_item *lip, 91 int remove) 92 { 93 } 94 95 STATIC void 96 xfs_icreate_item_unlock( 97 struct xfs_log_item *lip) 98 { 99 struct xfs_icreate_item *icp = ICR_ITEM(lip); 100 101 if (icp->ic_item.li_flags & XFS_LI_ABORTED) 102 kmem_zone_free(xfs_icreate_zone, icp); 103 return; 104 } 105 106 /* 107 * Because we have ordered buffers being tracked in the AIL for the inode 108 * creation, we don't need the create item after this. Hence we can free 109 * the log item and return -1 to tell the caller we're done with the item. 110 */ 111 STATIC xfs_lsn_t 112 xfs_icreate_item_committed( 113 struct xfs_log_item *lip, 114 xfs_lsn_t lsn) 115 { 116 struct xfs_icreate_item *icp = ICR_ITEM(lip); 117 118 kmem_zone_free(xfs_icreate_zone, icp); 119 return (xfs_lsn_t)-1; 120 } 121 122 /* item can never get into the AIL */ 123 STATIC uint 124 xfs_icreate_item_push( 125 struct xfs_log_item *lip, 126 struct list_head *buffer_list) 127 { 128 ASSERT(0); 129 return XFS_ITEM_SUCCESS; 130 } 131 132 /* Ordered buffers do the dependency tracking here, so this does nothing. */ 133 STATIC void 134 xfs_icreate_item_committing( 135 struct xfs_log_item *lip, 136 xfs_lsn_t lsn) 137 { 138 } 139 140 /* 141 * This is the ops vector shared by all buf log items. 142 */ 143 static struct xfs_item_ops xfs_icreate_item_ops = { 144 .iop_size = xfs_icreate_item_size, 145 .iop_format = xfs_icreate_item_format, 146 .iop_pin = xfs_icreate_item_pin, 147 .iop_unpin = xfs_icreate_item_unpin, 148 .iop_push = xfs_icreate_item_push, 149 .iop_unlock = xfs_icreate_item_unlock, 150 .iop_committed = xfs_icreate_item_committed, 151 .iop_committing = xfs_icreate_item_committing, 152 }; 153 154 155 /* 156 * Initialize the inode log item for a newly allocated (in-core) inode. 157 * 158 * Inode extents can only reside within an AG. Hence specify the starting 159 * block for the inode chunk by offset within an AG as well as the 160 * length of the allocated extent. 161 * 162 * This joins the item to the transaction and marks it dirty so 163 * that we don't need a separate call to do this, nor does the 164 * caller need to know anything about the icreate item. 165 */ 166 void 167 xfs_icreate_log( 168 struct xfs_trans *tp, 169 xfs_agnumber_t agno, 170 xfs_agblock_t agbno, 171 unsigned int count, 172 unsigned int inode_size, 173 xfs_agblock_t length, 174 unsigned int generation) 175 { 176 struct xfs_icreate_item *icp; 177 178 icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP); 179 180 xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE, 181 &xfs_icreate_item_ops); 182 183 icp->ic_format.icl_type = XFS_LI_ICREATE; 184 icp->ic_format.icl_size = 1; /* single vector */ 185 icp->ic_format.icl_ag = cpu_to_be32(agno); 186 icp->ic_format.icl_agbno = cpu_to_be32(agbno); 187 icp->ic_format.icl_count = cpu_to_be32(count); 188 icp->ic_format.icl_isize = cpu_to_be32(inode_size); 189 icp->ic_format.icl_length = cpu_to_be32(length); 190 icp->ic_format.icl_gen = cpu_to_be32(generation); 191 192 xfs_trans_add_item(tp, &icp->ic_item); 193 tp->t_flags |= XFS_TRANS_DIRTY; 194 icp->ic_item.li_desc->lid_flags |= XFS_LID_DIRTY; 195 } 196