Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 19 | #include "xfs_fs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include "xfs_types.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 21 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include "xfs_log.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 23 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include "xfs_trans.h" |
| 25 | #include "xfs_sb.h" |
| 26 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "xfs_dir2.h" |
| 28 | #include "xfs_dmapi.h" |
| 29 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include "xfs_bmap_btree.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 31 | #include "xfs_alloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "xfs_ialloc_btree.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 33 | #include "xfs_dir2_sf.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_alloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include "xfs_btree.h" |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 40 | #include "xfs_btree_trace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include "xfs_ialloc.h" |
| 42 | #include "xfs_itable.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include "xfs_bmap.h" |
| 44 | #include "xfs_error.h" |
| 45 | #include "xfs_quota.h" |
| 46 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | /* |
| 48 | * Prototypes for internal btree functions. |
| 49 | */ |
| 50 | |
| 51 | |
| 52 | STATIC int xfs_bmbt_killroot(xfs_btree_cur_t *); |
| 53 | STATIC void xfs_bmbt_log_keys(xfs_btree_cur_t *, xfs_buf_t *, int, int); |
| 54 | STATIC void xfs_bmbt_log_ptrs(xfs_btree_cur_t *, xfs_buf_t *, int, int); |
| 55 | STATIC int xfs_bmbt_lshift(xfs_btree_cur_t *, int, int *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | STATIC int xfs_bmbt_split(xfs_btree_cur_t *, int, xfs_fsblock_t *, |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 57 | __uint64_t *, xfs_btree_cur_t **, int *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #undef EXIT |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 60 | |
| 61 | #define ENTRY XBT_ENTRY |
| 62 | #define ERROR XBT_ERROR |
| 63 | #define EXIT XBT_EXIT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | /* |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 66 | * Keep the XFS_BMBT_TRACE_ names around for now until all code using them |
| 67 | * is converted to be generic and thus switches to the XFS_BTREE_TRACE_ names. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | */ |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 69 | #define XFS_BMBT_TRACE_ARGBI(c,b,i) \ |
| 70 | XFS_BTREE_TRACE_ARGBI(c,b,i) |
| 71 | #define XFS_BMBT_TRACE_ARGBII(c,b,i,j) \ |
| 72 | XFS_BTREE_TRACE_ARGBII(c,b,i,j) |
| 73 | #define XFS_BMBT_TRACE_ARGFFFI(c,o,b,i,j) \ |
| 74 | XFS_BTREE_TRACE_ARGFFFI(c,o,b,i,j) |
| 75 | #define XFS_BMBT_TRACE_ARGI(c,i) \ |
| 76 | XFS_BTREE_TRACE_ARGI(c,i) |
| 77 | #define XFS_BMBT_TRACE_ARGIFK(c,i,f,s) \ |
| 78 | XFS_BTREE_TRACE_ARGIPK(c,i,(union xfs_btree_ptr)f,s) |
| 79 | #define XFS_BMBT_TRACE_ARGIFR(c,i,f,r) \ |
| 80 | XFS_BTREE_TRACE_ARGIPR(c,i, \ |
| 81 | (union xfs_btree_ptr)f, (union xfs_btree_rec *)r) |
| 82 | #define XFS_BMBT_TRACE_ARGIK(c,i,k) \ |
| 83 | XFS_BTREE_TRACE_ARGIK(c,i,(union xfs_btree_key *)k) |
| 84 | #define XFS_BMBT_TRACE_CURSOR(c,s) \ |
| 85 | XFS_BTREE_TRACE_CURSOR(c,s) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | |
| 88 | /* |
| 89 | * Internal functions. |
| 90 | */ |
| 91 | |
| 92 | /* |
| 93 | * Delete record pointed to by cur/level. |
| 94 | */ |
| 95 | STATIC int /* error */ |
| 96 | xfs_bmbt_delrec( |
| 97 | xfs_btree_cur_t *cur, |
| 98 | int level, |
| 99 | int *stat) /* success/failure */ |
| 100 | { |
| 101 | xfs_bmbt_block_t *block; /* bmap btree block */ |
| 102 | xfs_fsblock_t bno; /* fs-relative block number */ |
| 103 | xfs_buf_t *bp; /* buffer for block */ |
| 104 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | int i; /* loop counter */ |
| 106 | int j; /* temp state */ |
| 107 | xfs_bmbt_key_t key; /* bmap btree key */ |
| 108 | xfs_bmbt_key_t *kp=NULL; /* pointer to bmap btree key */ |
| 109 | xfs_fsblock_t lbno; /* left sibling block number */ |
| 110 | xfs_buf_t *lbp; /* left buffer pointer */ |
| 111 | xfs_bmbt_block_t *left; /* left btree block */ |
| 112 | xfs_bmbt_key_t *lkp; /* left btree key */ |
| 113 | xfs_bmbt_ptr_t *lpp; /* left address pointer */ |
| 114 | int lrecs=0; /* left record count */ |
| 115 | xfs_bmbt_rec_t *lrp; /* left record pointer */ |
| 116 | xfs_mount_t *mp; /* file system mount point */ |
| 117 | xfs_bmbt_ptr_t *pp; /* pointer to bmap block addr */ |
| 118 | int ptr; /* key/record index */ |
| 119 | xfs_fsblock_t rbno; /* right sibling block number */ |
| 120 | xfs_buf_t *rbp; /* right buffer pointer */ |
| 121 | xfs_bmbt_block_t *right; /* right btree block */ |
| 122 | xfs_bmbt_key_t *rkp; /* right btree key */ |
| 123 | xfs_bmbt_rec_t *rp; /* pointer to bmap btree rec */ |
| 124 | xfs_bmbt_ptr_t *rpp; /* right address pointer */ |
| 125 | xfs_bmbt_block_t *rrblock; /* right-right btree block */ |
| 126 | xfs_buf_t *rrbp; /* right-right buffer pointer */ |
| 127 | int rrecs=0; /* right record count */ |
| 128 | xfs_bmbt_rec_t *rrp; /* right record pointer */ |
| 129 | xfs_btree_cur_t *tcur; /* temporary btree cursor */ |
| 130 | int numrecs; /* temporary numrec count */ |
| 131 | int numlrecs, numrrecs; |
| 132 | |
| 133 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 134 | XFS_BMBT_TRACE_ARGI(cur, level); |
| 135 | ptr = cur->bc_ptrs[level]; |
Nathan Scott | 1121b21 | 2006-09-28 10:58:40 +1000 | [diff] [blame] | 136 | tcur = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | if (ptr == 0) { |
| 138 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 139 | *stat = 0; |
| 140 | return 0; |
| 141 | } |
| 142 | block = xfs_bmbt_get_block(cur, level, &bp); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 143 | numrecs = be16_to_cpu(block->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | #ifdef DEBUG |
| 145 | if ((error = xfs_btree_check_lblock(cur, block, level, bp))) { |
| 146 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 147 | goto error0; |
| 148 | } |
| 149 | #endif |
| 150 | if (ptr > numrecs) { |
| 151 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 152 | *stat = 0; |
| 153 | return 0; |
| 154 | } |
| 155 | XFS_STATS_INC(xs_bmbt_delrec); |
| 156 | if (level > 0) { |
| 157 | kp = XFS_BMAP_KEY_IADDR(block, 1, cur); |
| 158 | pp = XFS_BMAP_PTR_IADDR(block, 1, cur); |
| 159 | #ifdef DEBUG |
| 160 | for (i = ptr; i < numrecs; i++) { |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 161 | if ((error = xfs_btree_check_lptr_disk(cur, pp[i], level))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 163 | goto error0; |
| 164 | } |
| 165 | } |
| 166 | #endif |
| 167 | if (ptr < numrecs) { |
| 168 | memmove(&kp[ptr - 1], &kp[ptr], |
| 169 | (numrecs - ptr) * sizeof(*kp)); |
Christoph Hellwig | d580ef6 | 2007-08-16 16:23:11 +1000 | [diff] [blame] | 170 | memmove(&pp[ptr - 1], &pp[ptr], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | (numrecs - ptr) * sizeof(*pp)); |
| 172 | xfs_bmbt_log_ptrs(cur, bp, ptr, numrecs - 1); |
| 173 | xfs_bmbt_log_keys(cur, bp, ptr, numrecs - 1); |
| 174 | } |
| 175 | } else { |
| 176 | rp = XFS_BMAP_REC_IADDR(block, 1, cur); |
| 177 | if (ptr < numrecs) { |
| 178 | memmove(&rp[ptr - 1], &rp[ptr], |
| 179 | (numrecs - ptr) * sizeof(*rp)); |
| 180 | xfs_bmbt_log_recs(cur, bp, ptr, numrecs - 1); |
| 181 | } |
| 182 | if (ptr == 1) { |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 183 | key.br_startoff = |
| 184 | cpu_to_be64(xfs_bmbt_disk_get_startoff(rp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | kp = &key; |
| 186 | } |
| 187 | } |
| 188 | numrecs--; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 189 | block->bb_numrecs = cpu_to_be16(numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | xfs_bmbt_log_block(cur, bp, XFS_BB_NUMRECS); |
| 191 | /* |
| 192 | * We're at the root level. |
| 193 | * First, shrink the root block in-memory. |
| 194 | * Try to get rid of the next level down. |
| 195 | * If we can't then there's nothing left to do. |
| 196 | */ |
| 197 | if (level == cur->bc_nlevels - 1) { |
| 198 | xfs_iroot_realloc(cur->bc_private.b.ip, -1, |
| 199 | cur->bc_private.b.whichfork); |
| 200 | if ((error = xfs_bmbt_killroot(cur))) { |
| 201 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 202 | goto error0; |
| 203 | } |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 204 | if (level > 0 && (error = xfs_btree_decrement(cur, level, &j))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 206 | goto error0; |
| 207 | } |
| 208 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 209 | *stat = 1; |
| 210 | return 0; |
| 211 | } |
Christoph Hellwig | 38bb742 | 2008-10-30 16:56:22 +1100 | [diff] [blame] | 212 | if (ptr == 1 && (error = xfs_btree_updkey(cur, (union xfs_btree_key *)kp, level + 1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 214 | goto error0; |
| 215 | } |
| 216 | if (numrecs >= XFS_BMAP_BLOCK_IMINRECS(level, cur)) { |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 217 | if (level > 0 && (error = xfs_btree_decrement(cur, level, &j))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 219 | goto error0; |
| 220 | } |
| 221 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 222 | *stat = 1; |
| 223 | return 0; |
| 224 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 225 | rbno = be64_to_cpu(block->bb_rightsib); |
| 226 | lbno = be64_to_cpu(block->bb_leftsib); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | /* |
| 228 | * One child of root, need to get a chance to copy its contents |
| 229 | * into the root and delete it. Can't go up to next level, |
| 230 | * there's nothing to delete there. |
| 231 | */ |
| 232 | if (lbno == NULLFSBLOCK && rbno == NULLFSBLOCK && |
| 233 | level == cur->bc_nlevels - 2) { |
| 234 | if ((error = xfs_bmbt_killroot(cur))) { |
| 235 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 236 | goto error0; |
| 237 | } |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 238 | if (level > 0 && (error = xfs_btree_decrement(cur, level, &i))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 240 | goto error0; |
| 241 | } |
| 242 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 243 | *stat = 1; |
| 244 | return 0; |
| 245 | } |
| 246 | ASSERT(rbno != NULLFSBLOCK || lbno != NULLFSBLOCK); |
| 247 | if ((error = xfs_btree_dup_cursor(cur, &tcur))) { |
| 248 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 249 | goto error0; |
| 250 | } |
| 251 | bno = NULLFSBLOCK; |
| 252 | if (rbno != NULLFSBLOCK) { |
| 253 | i = xfs_btree_lastrec(tcur, level); |
| 254 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); |
Christoph Hellwig | 637aa50 | 2008-10-30 16:55:45 +1100 | [diff] [blame] | 255 | if ((error = xfs_btree_increment(tcur, level, &i))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 257 | goto error0; |
| 258 | } |
| 259 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); |
| 260 | i = xfs_btree_lastrec(tcur, level); |
| 261 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); |
| 262 | rbp = tcur->bc_bufs[level]; |
| 263 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); |
| 264 | #ifdef DEBUG |
| 265 | if ((error = xfs_btree_check_lblock(cur, right, level, rbp))) { |
| 266 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 267 | goto error0; |
| 268 | } |
| 269 | #endif |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 270 | bno = be64_to_cpu(right->bb_leftsib); |
| 271 | if (be16_to_cpu(right->bb_numrecs) - 1 >= |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | XFS_BMAP_BLOCK_IMINRECS(level, cur)) { |
| 273 | if ((error = xfs_bmbt_lshift(tcur, level, &i))) { |
| 274 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 275 | goto error0; |
| 276 | } |
| 277 | if (i) { |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 278 | ASSERT(be16_to_cpu(block->bb_numrecs) >= |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | XFS_BMAP_BLOCK_IMINRECS(level, tcur)); |
| 280 | xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); |
| 281 | tcur = NULL; |
| 282 | if (level > 0) { |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 283 | if ((error = xfs_btree_decrement(cur, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | level, &i))) { |
| 285 | XFS_BMBT_TRACE_CURSOR(cur, |
| 286 | ERROR); |
| 287 | goto error0; |
| 288 | } |
| 289 | } |
| 290 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 291 | *stat = 1; |
| 292 | return 0; |
| 293 | } |
| 294 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 295 | rrecs = be16_to_cpu(right->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | if (lbno != NULLFSBLOCK) { |
| 297 | i = xfs_btree_firstrec(tcur, level); |
| 298 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 299 | if ((error = xfs_btree_decrement(tcur, level, &i))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 301 | goto error0; |
| 302 | } |
| 303 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); |
| 304 | } |
| 305 | } |
| 306 | if (lbno != NULLFSBLOCK) { |
| 307 | i = xfs_btree_firstrec(tcur, level); |
| 308 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); |
| 309 | /* |
| 310 | * decrement to last in block |
| 311 | */ |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 312 | if ((error = xfs_btree_decrement(tcur, level, &i))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 314 | goto error0; |
| 315 | } |
| 316 | i = xfs_btree_firstrec(tcur, level); |
| 317 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); |
| 318 | lbp = tcur->bc_bufs[level]; |
| 319 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); |
| 320 | #ifdef DEBUG |
| 321 | if ((error = xfs_btree_check_lblock(cur, left, level, lbp))) { |
| 322 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 323 | goto error0; |
| 324 | } |
| 325 | #endif |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 326 | bno = be64_to_cpu(left->bb_rightsib); |
| 327 | if (be16_to_cpu(left->bb_numrecs) - 1 >= |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | XFS_BMAP_BLOCK_IMINRECS(level, cur)) { |
Christoph Hellwig | 9eaead5 | 2008-10-30 16:56:43 +1100 | [diff] [blame^] | 329 | if ((error = xfs_btree_rshift(tcur, level, &i))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 331 | goto error0; |
| 332 | } |
| 333 | if (i) { |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 334 | ASSERT(be16_to_cpu(block->bb_numrecs) >= |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | XFS_BMAP_BLOCK_IMINRECS(level, tcur)); |
| 336 | xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); |
| 337 | tcur = NULL; |
| 338 | if (level == 0) |
| 339 | cur->bc_ptrs[0]++; |
| 340 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 341 | *stat = 1; |
| 342 | return 0; |
| 343 | } |
| 344 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 345 | lrecs = be16_to_cpu(left->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | } |
| 347 | xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); |
| 348 | tcur = NULL; |
| 349 | mp = cur->bc_mp; |
| 350 | ASSERT(bno != NULLFSBLOCK); |
| 351 | if (lbno != NULLFSBLOCK && |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 352 | lrecs + be16_to_cpu(block->bb_numrecs) <= XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | rbno = bno; |
| 354 | right = block; |
| 355 | rbp = bp; |
| 356 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, lbno, 0, &lbp, |
| 357 | XFS_BMAP_BTREE_REF))) { |
| 358 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 359 | goto error0; |
| 360 | } |
| 361 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); |
| 362 | if ((error = xfs_btree_check_lblock(cur, left, level, lbp))) { |
| 363 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 364 | goto error0; |
| 365 | } |
| 366 | } else if (rbno != NULLFSBLOCK && |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 367 | rrecs + be16_to_cpu(block->bb_numrecs) <= |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { |
| 369 | lbno = bno; |
| 370 | left = block; |
| 371 | lbp = bp; |
| 372 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, rbno, 0, &rbp, |
| 373 | XFS_BMAP_BTREE_REF))) { |
| 374 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 375 | goto error0; |
| 376 | } |
| 377 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); |
| 378 | if ((error = xfs_btree_check_lblock(cur, right, level, rbp))) { |
| 379 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 380 | goto error0; |
| 381 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 382 | lrecs = be16_to_cpu(left->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | } else { |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 384 | if (level > 0 && (error = xfs_btree_decrement(cur, level, &i))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 386 | goto error0; |
| 387 | } |
| 388 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 389 | *stat = 1; |
| 390 | return 0; |
| 391 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 392 | numlrecs = be16_to_cpu(left->bb_numrecs); |
| 393 | numrrecs = be16_to_cpu(right->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | if (level > 0) { |
| 395 | lkp = XFS_BMAP_KEY_IADDR(left, numlrecs + 1, cur); |
| 396 | lpp = XFS_BMAP_PTR_IADDR(left, numlrecs + 1, cur); |
| 397 | rkp = XFS_BMAP_KEY_IADDR(right, 1, cur); |
| 398 | rpp = XFS_BMAP_PTR_IADDR(right, 1, cur); |
| 399 | #ifdef DEBUG |
| 400 | for (i = 0; i < numrrecs; i++) { |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 401 | if ((error = xfs_btree_check_lptr_disk(cur, rpp[i], level))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 403 | goto error0; |
| 404 | } |
| 405 | } |
| 406 | #endif |
| 407 | memcpy(lkp, rkp, numrrecs * sizeof(*lkp)); |
| 408 | memcpy(lpp, rpp, numrrecs * sizeof(*lpp)); |
| 409 | xfs_bmbt_log_keys(cur, lbp, numlrecs + 1, numlrecs + numrrecs); |
| 410 | xfs_bmbt_log_ptrs(cur, lbp, numlrecs + 1, numlrecs + numrrecs); |
| 411 | } else { |
| 412 | lrp = XFS_BMAP_REC_IADDR(left, numlrecs + 1, cur); |
| 413 | rrp = XFS_BMAP_REC_IADDR(right, 1, cur); |
| 414 | memcpy(lrp, rrp, numrrecs * sizeof(*lrp)); |
| 415 | xfs_bmbt_log_recs(cur, lbp, numlrecs + 1, numlrecs + numrrecs); |
| 416 | } |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 417 | be16_add_cpu(&left->bb_numrecs, numrrecs); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 418 | left->bb_rightsib = right->bb_rightsib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | xfs_bmbt_log_block(cur, lbp, XFS_BB_RIGHTSIB | XFS_BB_NUMRECS); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 420 | if (be64_to_cpu(left->bb_rightsib) != NULLDFSBNO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 422 | be64_to_cpu(left->bb_rightsib), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | 0, &rrbp, XFS_BMAP_BTREE_REF))) { |
| 424 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 425 | goto error0; |
| 426 | } |
| 427 | rrblock = XFS_BUF_TO_BMBT_BLOCK(rrbp); |
| 428 | if ((error = xfs_btree_check_lblock(cur, rrblock, level, rrbp))) { |
| 429 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 430 | goto error0; |
| 431 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 432 | rrblock->bb_leftsib = cpu_to_be64(lbno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | xfs_bmbt_log_block(cur, rrbp, XFS_BB_LEFTSIB); |
| 434 | } |
| 435 | xfs_bmap_add_free(XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(rbp)), 1, |
| 436 | cur->bc_private.b.flist, mp); |
| 437 | cur->bc_private.b.ip->i_d.di_nblocks--; |
| 438 | xfs_trans_log_inode(cur->bc_tp, cur->bc_private.b.ip, XFS_ILOG_CORE); |
| 439 | XFS_TRANS_MOD_DQUOT_BYINO(mp, cur->bc_tp, cur->bc_private.b.ip, |
| 440 | XFS_TRANS_DQ_BCOUNT, -1L); |
| 441 | xfs_trans_binval(cur->bc_tp, rbp); |
| 442 | if (bp != lbp) { |
| 443 | cur->bc_bufs[level] = lbp; |
| 444 | cur->bc_ptrs[level] += lrecs; |
| 445 | cur->bc_ra[level] = 0; |
Christoph Hellwig | 637aa50 | 2008-10-30 16:55:45 +1100 | [diff] [blame] | 446 | } else if ((error = xfs_btree_increment(cur, level + 1, &i))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 448 | goto error0; |
| 449 | } |
| 450 | if (level > 0) |
| 451 | cur->bc_ptrs[level]--; |
| 452 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 453 | *stat = 2; |
| 454 | return 0; |
| 455 | |
| 456 | error0: |
| 457 | if (tcur) |
| 458 | xfs_btree_del_cursor(tcur, XFS_BTREE_ERROR); |
| 459 | return error; |
| 460 | } |
| 461 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | /* |
| 463 | * Insert one record/level. Return information to the caller |
| 464 | * allowing the next level up to proceed if necessary. |
| 465 | */ |
| 466 | STATIC int /* error */ |
| 467 | xfs_bmbt_insrec( |
| 468 | xfs_btree_cur_t *cur, |
| 469 | int level, |
| 470 | xfs_fsblock_t *bnop, |
| 471 | xfs_bmbt_rec_t *recp, |
| 472 | xfs_btree_cur_t **curp, |
| 473 | int *stat) /* no-go/done/continue */ |
| 474 | { |
| 475 | xfs_bmbt_block_t *block; /* bmap btree block */ |
| 476 | xfs_buf_t *bp; /* buffer for block */ |
| 477 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | int i; /* loop index */ |
| 479 | xfs_bmbt_key_t key; /* bmap btree key */ |
| 480 | xfs_bmbt_key_t *kp=NULL; /* pointer to bmap btree key */ |
| 481 | int logflags; /* inode logging flags */ |
| 482 | xfs_fsblock_t nbno; /* new block number */ |
| 483 | struct xfs_btree_cur *ncur; /* new btree cursor */ |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 484 | __uint64_t startoff; /* new btree key value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | xfs_bmbt_rec_t nrec; /* new record count */ |
| 486 | int optr; /* old key/record index */ |
| 487 | xfs_bmbt_ptr_t *pp; /* pointer to bmap block addr */ |
| 488 | int ptr; /* key/record index */ |
| 489 | xfs_bmbt_rec_t *rp=NULL; /* pointer to bmap btree rec */ |
| 490 | int numrecs; |
| 491 | |
| 492 | ASSERT(level < cur->bc_nlevels); |
| 493 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 494 | XFS_BMBT_TRACE_ARGIFR(cur, level, *bnop, recp); |
Nathan Scott | 1121b21 | 2006-09-28 10:58:40 +1000 | [diff] [blame] | 495 | ncur = NULL; |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 496 | key.br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(recp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | optr = ptr = cur->bc_ptrs[level]; |
| 498 | if (ptr == 0) { |
| 499 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 500 | *stat = 0; |
| 501 | return 0; |
| 502 | } |
| 503 | XFS_STATS_INC(xs_bmbt_insrec); |
| 504 | block = xfs_bmbt_get_block(cur, level, &bp); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 505 | numrecs = be16_to_cpu(block->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | #ifdef DEBUG |
| 507 | if ((error = xfs_btree_check_lblock(cur, block, level, bp))) { |
| 508 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 509 | return error; |
| 510 | } |
| 511 | if (ptr <= numrecs) { |
| 512 | if (level == 0) { |
| 513 | rp = XFS_BMAP_REC_IADDR(block, ptr, cur); |
| 514 | xfs_btree_check_rec(XFS_BTNUM_BMAP, recp, rp); |
| 515 | } else { |
| 516 | kp = XFS_BMAP_KEY_IADDR(block, ptr, cur); |
| 517 | xfs_btree_check_key(XFS_BTNUM_BMAP, &key, kp); |
| 518 | } |
| 519 | } |
| 520 | #endif |
| 521 | nbno = NULLFSBLOCK; |
| 522 | if (numrecs == XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { |
| 523 | if (numrecs < XFS_BMAP_BLOCK_DMAXRECS(level, cur)) { |
| 524 | /* |
| 525 | * A root block, that can be made bigger. |
| 526 | */ |
| 527 | xfs_iroot_realloc(cur->bc_private.b.ip, 1, |
| 528 | cur->bc_private.b.whichfork); |
| 529 | block = xfs_bmbt_get_block(cur, level, &bp); |
| 530 | } else if (level == cur->bc_nlevels - 1) { |
| 531 | if ((error = xfs_bmbt_newroot(cur, &logflags, stat)) || |
| 532 | *stat == 0) { |
| 533 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 534 | return error; |
| 535 | } |
| 536 | xfs_trans_log_inode(cur->bc_tp, cur->bc_private.b.ip, |
| 537 | logflags); |
| 538 | block = xfs_bmbt_get_block(cur, level, &bp); |
| 539 | } else { |
Christoph Hellwig | 9eaead5 | 2008-10-30 16:56:43 +1100 | [diff] [blame^] | 540 | if ((error = xfs_btree_rshift(cur, level, &i))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 542 | return error; |
| 543 | } |
| 544 | if (i) { |
| 545 | /* nothing */ |
| 546 | } else { |
| 547 | if ((error = xfs_bmbt_lshift(cur, level, &i))) { |
| 548 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 549 | return error; |
| 550 | } |
| 551 | if (i) { |
| 552 | optr = ptr = cur->bc_ptrs[level]; |
| 553 | } else { |
| 554 | if ((error = xfs_bmbt_split(cur, level, |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 555 | &nbno, &startoff, &ncur, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | &i))) { |
| 557 | XFS_BMBT_TRACE_CURSOR(cur, |
| 558 | ERROR); |
| 559 | return error; |
| 560 | } |
| 561 | if (i) { |
| 562 | block = xfs_bmbt_get_block( |
| 563 | cur, level, &bp); |
| 564 | #ifdef DEBUG |
| 565 | if ((error = |
| 566 | xfs_btree_check_lblock(cur, |
| 567 | block, level, bp))) { |
| 568 | XFS_BMBT_TRACE_CURSOR( |
| 569 | cur, ERROR); |
| 570 | return error; |
| 571 | } |
| 572 | #endif |
| 573 | ptr = cur->bc_ptrs[level]; |
| 574 | xfs_bmbt_disk_set_allf(&nrec, |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 575 | startoff, 0, 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | XFS_EXT_NORM); |
| 577 | } else { |
| 578 | XFS_BMBT_TRACE_CURSOR(cur, |
| 579 | EXIT); |
| 580 | *stat = 0; |
| 581 | return 0; |
| 582 | } |
| 583 | } |
| 584 | } |
| 585 | } |
| 586 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 587 | numrecs = be16_to_cpu(block->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | if (level > 0) { |
| 589 | kp = XFS_BMAP_KEY_IADDR(block, 1, cur); |
| 590 | pp = XFS_BMAP_PTR_IADDR(block, 1, cur); |
| 591 | #ifdef DEBUG |
| 592 | for (i = numrecs; i >= ptr; i--) { |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 593 | if ((error = xfs_btree_check_lptr_disk(cur, pp[i - 1], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | level))) { |
| 595 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 596 | return error; |
| 597 | } |
| 598 | } |
| 599 | #endif |
| 600 | memmove(&kp[ptr], &kp[ptr - 1], |
| 601 | (numrecs - ptr + 1) * sizeof(*kp)); |
Christoph Hellwig | d580ef6 | 2007-08-16 16:23:11 +1000 | [diff] [blame] | 602 | memmove(&pp[ptr], &pp[ptr - 1], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | (numrecs - ptr + 1) * sizeof(*pp)); |
| 604 | #ifdef DEBUG |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 605 | if ((error = xfs_btree_check_lptr(cur, *bnop, level))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 607 | return error; |
| 608 | } |
| 609 | #endif |
| 610 | kp[ptr - 1] = key; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 611 | pp[ptr - 1] = cpu_to_be64(*bnop); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | numrecs++; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 613 | block->bb_numrecs = cpu_to_be16(numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | xfs_bmbt_log_keys(cur, bp, ptr, numrecs); |
| 615 | xfs_bmbt_log_ptrs(cur, bp, ptr, numrecs); |
| 616 | } else { |
| 617 | rp = XFS_BMAP_REC_IADDR(block, 1, cur); |
| 618 | memmove(&rp[ptr], &rp[ptr - 1], |
| 619 | (numrecs - ptr + 1) * sizeof(*rp)); |
| 620 | rp[ptr - 1] = *recp; |
| 621 | numrecs++; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 622 | block->bb_numrecs = cpu_to_be16(numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | xfs_bmbt_log_recs(cur, bp, ptr, numrecs); |
| 624 | } |
| 625 | xfs_bmbt_log_block(cur, bp, XFS_BB_NUMRECS); |
| 626 | #ifdef DEBUG |
| 627 | if (ptr < numrecs) { |
| 628 | if (level == 0) |
| 629 | xfs_btree_check_rec(XFS_BTNUM_BMAP, rp + ptr - 1, |
| 630 | rp + ptr); |
| 631 | else |
| 632 | xfs_btree_check_key(XFS_BTNUM_BMAP, kp + ptr - 1, |
| 633 | kp + ptr); |
| 634 | } |
| 635 | #endif |
Christoph Hellwig | 38bb742 | 2008-10-30 16:56:22 +1100 | [diff] [blame] | 636 | if (optr == 1 && (error = xfs_btree_updkey(cur, (union xfs_btree_key *)&key, level + 1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 638 | return error; |
| 639 | } |
| 640 | *bnop = nbno; |
| 641 | if (nbno != NULLFSBLOCK) { |
| 642 | *recp = nrec; |
| 643 | *curp = ncur; |
| 644 | } |
| 645 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 646 | *stat = 1; |
| 647 | return 0; |
| 648 | } |
| 649 | |
| 650 | STATIC int |
| 651 | xfs_bmbt_killroot( |
| 652 | xfs_btree_cur_t *cur) |
| 653 | { |
| 654 | xfs_bmbt_block_t *block; |
| 655 | xfs_bmbt_block_t *cblock; |
| 656 | xfs_buf_t *cbp; |
| 657 | xfs_bmbt_key_t *ckp; |
| 658 | xfs_bmbt_ptr_t *cpp; |
| 659 | #ifdef DEBUG |
| 660 | int error; |
| 661 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | int i; |
| 663 | xfs_bmbt_key_t *kp; |
| 664 | xfs_inode_t *ip; |
| 665 | xfs_ifork_t *ifp; |
| 666 | int level; |
| 667 | xfs_bmbt_ptr_t *pp; |
| 668 | |
| 669 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 670 | level = cur->bc_nlevels - 1; |
| 671 | ASSERT(level >= 1); |
| 672 | /* |
| 673 | * Don't deal with the root block needs to be a leaf case. |
| 674 | * We're just going to turn the thing back into extents anyway. |
| 675 | */ |
| 676 | if (level == 1) { |
| 677 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 678 | return 0; |
| 679 | } |
| 680 | block = xfs_bmbt_get_block(cur, level, &cbp); |
| 681 | /* |
| 682 | * Give up if the root has multiple children. |
| 683 | */ |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 684 | if (be16_to_cpu(block->bb_numrecs) != 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 686 | return 0; |
| 687 | } |
| 688 | /* |
| 689 | * Only do this if the next level will fit. |
| 690 | * Then the data must be copied up to the inode, |
| 691 | * instead of freeing the root you free the next level. |
| 692 | */ |
| 693 | cbp = cur->bc_bufs[level - 1]; |
| 694 | cblock = XFS_BUF_TO_BMBT_BLOCK(cbp); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 695 | if (be16_to_cpu(cblock->bb_numrecs) > XFS_BMAP_BLOCK_DMAXRECS(level, cur)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 697 | return 0; |
| 698 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 699 | ASSERT(be64_to_cpu(cblock->bb_leftsib) == NULLDFSBNO); |
| 700 | ASSERT(be64_to_cpu(cblock->bb_rightsib) == NULLDFSBNO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | ip = cur->bc_private.b.ip; |
| 702 | ifp = XFS_IFORK_PTR(ip, cur->bc_private.b.whichfork); |
| 703 | ASSERT(XFS_BMAP_BLOCK_IMAXRECS(level, cur) == |
| 704 | XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes)); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 705 | i = (int)(be16_to_cpu(cblock->bb_numrecs) - XFS_BMAP_BLOCK_IMAXRECS(level, cur)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | if (i) { |
| 707 | xfs_iroot_realloc(ip, i, cur->bc_private.b.whichfork); |
| 708 | block = ifp->if_broot; |
| 709 | } |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 710 | be16_add_cpu(&block->bb_numrecs, i); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 711 | ASSERT(block->bb_numrecs == cblock->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | kp = XFS_BMAP_KEY_IADDR(block, 1, cur); |
| 713 | ckp = XFS_BMAP_KEY_IADDR(cblock, 1, cur); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 714 | memcpy(kp, ckp, be16_to_cpu(block->bb_numrecs) * sizeof(*kp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | pp = XFS_BMAP_PTR_IADDR(block, 1, cur); |
| 716 | cpp = XFS_BMAP_PTR_IADDR(cblock, 1, cur); |
| 717 | #ifdef DEBUG |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 718 | for (i = 0; i < be16_to_cpu(cblock->bb_numrecs); i++) { |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 719 | if ((error = xfs_btree_check_lptr_disk(cur, cpp[i], level - 1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 721 | return error; |
| 722 | } |
| 723 | } |
| 724 | #endif |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 725 | memcpy(pp, cpp, be16_to_cpu(block->bb_numrecs) * sizeof(*pp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | xfs_bmap_add_free(XFS_DADDR_TO_FSB(cur->bc_mp, XFS_BUF_ADDR(cbp)), 1, |
| 727 | cur->bc_private.b.flist, cur->bc_mp); |
| 728 | ip->i_d.di_nblocks--; |
| 729 | XFS_TRANS_MOD_DQUOT_BYINO(cur->bc_mp, cur->bc_tp, ip, |
| 730 | XFS_TRANS_DQ_BCOUNT, -1L); |
| 731 | xfs_trans_binval(cur->bc_tp, cbp); |
| 732 | cur->bc_bufs[level - 1] = NULL; |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 733 | be16_add_cpu(&block->bb_level, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | xfs_trans_log_inode(cur->bc_tp, ip, |
| 735 | XFS_ILOG_CORE | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); |
| 736 | cur->bc_nlevels--; |
| 737 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 738 | return 0; |
| 739 | } |
| 740 | |
| 741 | /* |
| 742 | * Log key values from the btree block. |
| 743 | */ |
| 744 | STATIC void |
| 745 | xfs_bmbt_log_keys( |
| 746 | xfs_btree_cur_t *cur, |
| 747 | xfs_buf_t *bp, |
| 748 | int kfirst, |
| 749 | int klast) |
| 750 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | xfs_trans_t *tp; |
| 752 | |
| 753 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 754 | XFS_BMBT_TRACE_ARGBII(cur, bp, kfirst, klast); |
| 755 | tp = cur->bc_tp; |
| 756 | if (bp) { |
| 757 | xfs_bmbt_block_t *block; |
| 758 | int first; |
| 759 | xfs_bmbt_key_t *kp; |
| 760 | int last; |
| 761 | |
| 762 | block = XFS_BUF_TO_BMBT_BLOCK(bp); |
| 763 | kp = XFS_BMAP_KEY_DADDR(block, 1, cur); |
| 764 | first = (int)((xfs_caddr_t)&kp[kfirst - 1] - (xfs_caddr_t)block); |
| 765 | last = (int)(((xfs_caddr_t)&kp[klast] - 1) - (xfs_caddr_t)block); |
| 766 | xfs_trans_log_buf(tp, bp, first, last); |
| 767 | } else { |
| 768 | xfs_inode_t *ip; |
| 769 | |
| 770 | ip = cur->bc_private.b.ip; |
| 771 | xfs_trans_log_inode(tp, ip, |
| 772 | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); |
| 773 | } |
| 774 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 775 | } |
| 776 | |
| 777 | /* |
| 778 | * Log pointer values from the btree block. |
| 779 | */ |
| 780 | STATIC void |
| 781 | xfs_bmbt_log_ptrs( |
| 782 | xfs_btree_cur_t *cur, |
| 783 | xfs_buf_t *bp, |
| 784 | int pfirst, |
| 785 | int plast) |
| 786 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | xfs_trans_t *tp; |
| 788 | |
| 789 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 790 | XFS_BMBT_TRACE_ARGBII(cur, bp, pfirst, plast); |
| 791 | tp = cur->bc_tp; |
| 792 | if (bp) { |
| 793 | xfs_bmbt_block_t *block; |
| 794 | int first; |
| 795 | int last; |
| 796 | xfs_bmbt_ptr_t *pp; |
| 797 | |
| 798 | block = XFS_BUF_TO_BMBT_BLOCK(bp); |
| 799 | pp = XFS_BMAP_PTR_DADDR(block, 1, cur); |
| 800 | first = (int)((xfs_caddr_t)&pp[pfirst - 1] - (xfs_caddr_t)block); |
| 801 | last = (int)(((xfs_caddr_t)&pp[plast] - 1) - (xfs_caddr_t)block); |
| 802 | xfs_trans_log_buf(tp, bp, first, last); |
| 803 | } else { |
| 804 | xfs_inode_t *ip; |
| 805 | |
| 806 | ip = cur->bc_private.b.ip; |
| 807 | xfs_trans_log_inode(tp, ip, |
| 808 | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); |
| 809 | } |
| 810 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 811 | } |
| 812 | |
| 813 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | * Move 1 record left from cur/level if possible. |
| 815 | * Update cur to reflect the new path. |
| 816 | */ |
| 817 | STATIC int /* error */ |
| 818 | xfs_bmbt_lshift( |
| 819 | xfs_btree_cur_t *cur, |
| 820 | int level, |
| 821 | int *stat) /* success/failure */ |
| 822 | { |
| 823 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | #ifdef DEBUG |
| 825 | int i; /* loop counter */ |
| 826 | #endif |
| 827 | xfs_bmbt_key_t key; /* bmap btree key */ |
| 828 | xfs_buf_t *lbp; /* left buffer pointer */ |
| 829 | xfs_bmbt_block_t *left; /* left btree block */ |
| 830 | xfs_bmbt_key_t *lkp=NULL; /* left btree key */ |
| 831 | xfs_bmbt_ptr_t *lpp; /* left address pointer */ |
| 832 | int lrecs; /* left record count */ |
| 833 | xfs_bmbt_rec_t *lrp=NULL; /* left record pointer */ |
| 834 | xfs_mount_t *mp; /* file system mount point */ |
| 835 | xfs_buf_t *rbp; /* right buffer pointer */ |
| 836 | xfs_bmbt_block_t *right; /* right btree block */ |
| 837 | xfs_bmbt_key_t *rkp=NULL; /* right btree key */ |
| 838 | xfs_bmbt_ptr_t *rpp=NULL; /* right address pointer */ |
| 839 | xfs_bmbt_rec_t *rrp=NULL; /* right record pointer */ |
| 840 | int rrecs; /* right record count */ |
| 841 | |
| 842 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 843 | XFS_BMBT_TRACE_ARGI(cur, level); |
| 844 | if (level == cur->bc_nlevels - 1) { |
| 845 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 846 | *stat = 0; |
| 847 | return 0; |
| 848 | } |
| 849 | rbp = cur->bc_bufs[level]; |
| 850 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); |
| 851 | #ifdef DEBUG |
| 852 | if ((error = xfs_btree_check_lblock(cur, right, level, rbp))) { |
| 853 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 854 | return error; |
| 855 | } |
| 856 | #endif |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 857 | if (be64_to_cpu(right->bb_leftsib) == NULLDFSBNO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 859 | *stat = 0; |
| 860 | return 0; |
| 861 | } |
| 862 | if (cur->bc_ptrs[level] <= 1) { |
| 863 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 864 | *stat = 0; |
| 865 | return 0; |
| 866 | } |
| 867 | mp = cur->bc_mp; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 868 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, be64_to_cpu(right->bb_leftsib), 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | &lbp, XFS_BMAP_BTREE_REF))) { |
| 870 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 871 | return error; |
| 872 | } |
| 873 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); |
| 874 | if ((error = xfs_btree_check_lblock(cur, left, level, lbp))) { |
| 875 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 876 | return error; |
| 877 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 878 | if (be16_to_cpu(left->bb_numrecs) == XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 880 | *stat = 0; |
| 881 | return 0; |
| 882 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 883 | lrecs = be16_to_cpu(left->bb_numrecs) + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | if (level > 0) { |
| 885 | lkp = XFS_BMAP_KEY_IADDR(left, lrecs, cur); |
| 886 | rkp = XFS_BMAP_KEY_IADDR(right, 1, cur); |
| 887 | *lkp = *rkp; |
| 888 | xfs_bmbt_log_keys(cur, lbp, lrecs, lrecs); |
| 889 | lpp = XFS_BMAP_PTR_IADDR(left, lrecs, cur); |
| 890 | rpp = XFS_BMAP_PTR_IADDR(right, 1, cur); |
| 891 | #ifdef DEBUG |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 892 | if ((error = xfs_btree_check_lptr_disk(cur, *rpp, level))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 894 | return error; |
| 895 | } |
| 896 | #endif |
Christoph Hellwig | d580ef6 | 2007-08-16 16:23:11 +1000 | [diff] [blame] | 897 | *lpp = *rpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | xfs_bmbt_log_ptrs(cur, lbp, lrecs, lrecs); |
| 899 | } else { |
| 900 | lrp = XFS_BMAP_REC_IADDR(left, lrecs, cur); |
| 901 | rrp = XFS_BMAP_REC_IADDR(right, 1, cur); |
| 902 | *lrp = *rrp; |
| 903 | xfs_bmbt_log_recs(cur, lbp, lrecs, lrecs); |
| 904 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 905 | left->bb_numrecs = cpu_to_be16(lrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | xfs_bmbt_log_block(cur, lbp, XFS_BB_NUMRECS); |
| 907 | #ifdef DEBUG |
| 908 | if (level > 0) |
| 909 | xfs_btree_check_key(XFS_BTNUM_BMAP, lkp - 1, lkp); |
| 910 | else |
| 911 | xfs_btree_check_rec(XFS_BTNUM_BMAP, lrp - 1, lrp); |
| 912 | #endif |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 913 | rrecs = be16_to_cpu(right->bb_numrecs) - 1; |
| 914 | right->bb_numrecs = cpu_to_be16(rrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | xfs_bmbt_log_block(cur, rbp, XFS_BB_NUMRECS); |
| 916 | if (level > 0) { |
| 917 | #ifdef DEBUG |
| 918 | for (i = 0; i < rrecs; i++) { |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 919 | if ((error = xfs_btree_check_lptr_disk(cur, rpp[i + 1], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | level))) { |
| 921 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 922 | return error; |
| 923 | } |
| 924 | } |
| 925 | #endif |
| 926 | memmove(rkp, rkp + 1, rrecs * sizeof(*rkp)); |
| 927 | memmove(rpp, rpp + 1, rrecs * sizeof(*rpp)); |
| 928 | xfs_bmbt_log_keys(cur, rbp, 1, rrecs); |
| 929 | xfs_bmbt_log_ptrs(cur, rbp, 1, rrecs); |
| 930 | } else { |
| 931 | memmove(rrp, rrp + 1, rrecs * sizeof(*rrp)); |
| 932 | xfs_bmbt_log_recs(cur, rbp, 1, rrecs); |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 933 | key.br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(rrp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | rkp = &key; |
| 935 | } |
Christoph Hellwig | 38bb742 | 2008-10-30 16:56:22 +1100 | [diff] [blame] | 936 | if ((error = xfs_btree_updkey(cur, (union xfs_btree_key *)rkp, level + 1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 938 | return error; |
| 939 | } |
| 940 | cur->bc_ptrs[level]--; |
| 941 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 942 | *stat = 1; |
| 943 | return 0; |
| 944 | } |
| 945 | |
| 946 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | * Determine the extent state. |
| 948 | */ |
| 949 | /* ARGSUSED */ |
| 950 | STATIC xfs_exntst_t |
| 951 | xfs_extent_state( |
| 952 | xfs_filblks_t blks, |
| 953 | int extent_flag) |
| 954 | { |
| 955 | if (extent_flag) { |
| 956 | ASSERT(blks != 0); /* saved for DMIG */ |
| 957 | return XFS_EXT_UNWRITTEN; |
| 958 | } |
| 959 | return XFS_EXT_NORM; |
| 960 | } |
| 961 | |
| 962 | |
| 963 | /* |
| 964 | * Split cur/level block in half. |
| 965 | * Return new block number and its first record (to be inserted into parent). |
| 966 | */ |
| 967 | STATIC int /* error */ |
| 968 | xfs_bmbt_split( |
| 969 | xfs_btree_cur_t *cur, |
| 970 | int level, |
| 971 | xfs_fsblock_t *bnop, |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 972 | __uint64_t *startoff, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | xfs_btree_cur_t **curp, |
| 974 | int *stat) /* success/failure */ |
| 975 | { |
| 976 | xfs_alloc_arg_t args; /* block allocation args */ |
| 977 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | int i; /* loop counter */ |
| 979 | xfs_fsblock_t lbno; /* left sibling block number */ |
| 980 | xfs_buf_t *lbp; /* left buffer pointer */ |
| 981 | xfs_bmbt_block_t *left; /* left btree block */ |
| 982 | xfs_bmbt_key_t *lkp; /* left btree key */ |
| 983 | xfs_bmbt_ptr_t *lpp; /* left address pointer */ |
| 984 | xfs_bmbt_rec_t *lrp; /* left record pointer */ |
| 985 | xfs_buf_t *rbp; /* right buffer pointer */ |
| 986 | xfs_bmbt_block_t *right; /* right btree block */ |
| 987 | xfs_bmbt_key_t *rkp; /* right btree key */ |
| 988 | xfs_bmbt_ptr_t *rpp; /* right address pointer */ |
| 989 | xfs_bmbt_block_t *rrblock; /* right-right btree block */ |
| 990 | xfs_buf_t *rrbp; /* right-right buffer pointer */ |
| 991 | xfs_bmbt_rec_t *rrp; /* right record pointer */ |
| 992 | |
| 993 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 994 | // disable until merged into common code |
| 995 | // XFS_BMBT_TRACE_ARGIFK(cur, level, *bnop, *startoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | args.tp = cur->bc_tp; |
| 997 | args.mp = cur->bc_mp; |
| 998 | lbp = cur->bc_bufs[level]; |
| 999 | lbno = XFS_DADDR_TO_FSB(args.mp, XFS_BUF_ADDR(lbp)); |
| 1000 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); |
| 1001 | args.fsbno = cur->bc_private.b.firstblock; |
Yingping Lu | d210a28 | 2006-06-09 14:55:18 +1000 | [diff] [blame] | 1002 | args.firstblock = args.fsbno; |
Lachlan McIlroy | 4ddd8bb | 2008-06-27 13:32:53 +1000 | [diff] [blame] | 1003 | args.minleft = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | if (args.fsbno == NULLFSBLOCK) { |
| 1005 | args.fsbno = lbno; |
| 1006 | args.type = XFS_ALLOCTYPE_START_BNO; |
Lachlan McIlroy | 4ddd8bb | 2008-06-27 13:32:53 +1000 | [diff] [blame] | 1007 | /* |
| 1008 | * Make sure there is sufficient room left in the AG to |
| 1009 | * complete a full tree split for an extent insert. If |
| 1010 | * we are converting the middle part of an extent then |
| 1011 | * we may need space for two tree splits. |
| 1012 | * |
| 1013 | * We are relying on the caller to make the correct block |
| 1014 | * reservation for this operation to succeed. If the |
| 1015 | * reservation amount is insufficient then we may fail a |
| 1016 | * block allocation here and corrupt the filesystem. |
| 1017 | */ |
| 1018 | args.minleft = xfs_trans_get_block_res(args.tp); |
Lachlan McIlroy | b877e3d | 2008-06-27 13:33:03 +1000 | [diff] [blame] | 1019 | } else if (cur->bc_private.b.flist->xbf_low) |
| 1020 | args.type = XFS_ALLOCTYPE_START_BNO; |
| 1021 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | args.type = XFS_ALLOCTYPE_NEAR_BNO; |
Lachlan McIlroy | 4ddd8bb | 2008-06-27 13:32:53 +1000 | [diff] [blame] | 1023 | args.mod = args.alignment = args.total = args.isfl = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | args.userdata = args.minalignslop = 0; |
| 1025 | args.minlen = args.maxlen = args.prod = 1; |
| 1026 | args.wasdel = cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL; |
| 1027 | if (!args.wasdel && xfs_trans_get_block_res(args.tp) == 0) { |
| 1028 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1029 | return XFS_ERROR(ENOSPC); |
| 1030 | } |
| 1031 | if ((error = xfs_alloc_vextent(&args))) { |
| 1032 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1033 | return error; |
| 1034 | } |
Lachlan McIlroy | 313b5c7 | 2008-06-27 13:33:11 +1000 | [diff] [blame] | 1035 | if (args.fsbno == NULLFSBLOCK && args.minleft) { |
| 1036 | /* |
| 1037 | * Could not find an AG with enough free space to satisfy |
| 1038 | * a full btree split. Try again without minleft and if |
| 1039 | * successful activate the lowspace algorithm. |
| 1040 | */ |
| 1041 | args.fsbno = 0; |
| 1042 | args.type = XFS_ALLOCTYPE_FIRST_AG; |
| 1043 | args.minleft = 0; |
| 1044 | if ((error = xfs_alloc_vextent(&args))) { |
| 1045 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1046 | return error; |
| 1047 | } |
| 1048 | cur->bc_private.b.flist->xbf_low = 1; |
| 1049 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | if (args.fsbno == NULLFSBLOCK) { |
| 1051 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 1052 | *stat = 0; |
| 1053 | return 0; |
| 1054 | } |
| 1055 | ASSERT(args.len == 1); |
| 1056 | cur->bc_private.b.firstblock = args.fsbno; |
| 1057 | cur->bc_private.b.allocated++; |
| 1058 | cur->bc_private.b.ip->i_d.di_nblocks++; |
| 1059 | xfs_trans_log_inode(args.tp, cur->bc_private.b.ip, XFS_ILOG_CORE); |
| 1060 | XFS_TRANS_MOD_DQUOT_BYINO(args.mp, args.tp, cur->bc_private.b.ip, |
| 1061 | XFS_TRANS_DQ_BCOUNT, 1L); |
| 1062 | rbp = xfs_btree_get_bufl(args.mp, args.tp, args.fsbno, 0); |
| 1063 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); |
| 1064 | #ifdef DEBUG |
| 1065 | if ((error = xfs_btree_check_lblock(cur, left, level, rbp))) { |
| 1066 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1067 | return error; |
| 1068 | } |
| 1069 | #endif |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1070 | right->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC); |
| 1071 | right->bb_level = left->bb_level; |
| 1072 | right->bb_numrecs = cpu_to_be16(be16_to_cpu(left->bb_numrecs) / 2); |
| 1073 | if ((be16_to_cpu(left->bb_numrecs) & 1) && |
| 1074 | cur->bc_ptrs[level] <= be16_to_cpu(right->bb_numrecs) + 1) |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1075 | be16_add_cpu(&right->bb_numrecs, 1); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1076 | i = be16_to_cpu(left->bb_numrecs) - be16_to_cpu(right->bb_numrecs) + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | if (level > 0) { |
| 1078 | lkp = XFS_BMAP_KEY_IADDR(left, i, cur); |
| 1079 | lpp = XFS_BMAP_PTR_IADDR(left, i, cur); |
| 1080 | rkp = XFS_BMAP_KEY_IADDR(right, 1, cur); |
| 1081 | rpp = XFS_BMAP_PTR_IADDR(right, 1, cur); |
| 1082 | #ifdef DEBUG |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1083 | for (i = 0; i < be16_to_cpu(right->bb_numrecs); i++) { |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 1084 | if ((error = xfs_btree_check_lptr_disk(cur, lpp[i], level))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1086 | return error; |
| 1087 | } |
| 1088 | } |
| 1089 | #endif |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1090 | memcpy(rkp, lkp, be16_to_cpu(right->bb_numrecs) * sizeof(*rkp)); |
| 1091 | memcpy(rpp, lpp, be16_to_cpu(right->bb_numrecs) * sizeof(*rpp)); |
| 1092 | xfs_bmbt_log_keys(cur, rbp, 1, be16_to_cpu(right->bb_numrecs)); |
| 1093 | xfs_bmbt_log_ptrs(cur, rbp, 1, be16_to_cpu(right->bb_numrecs)); |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 1094 | *startoff = be64_to_cpu(rkp->br_startoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | } else { |
| 1096 | lrp = XFS_BMAP_REC_IADDR(left, i, cur); |
| 1097 | rrp = XFS_BMAP_REC_IADDR(right, 1, cur); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1098 | memcpy(rrp, lrp, be16_to_cpu(right->bb_numrecs) * sizeof(*rrp)); |
| 1099 | xfs_bmbt_log_recs(cur, rbp, 1, be16_to_cpu(right->bb_numrecs)); |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 1100 | *startoff = xfs_bmbt_disk_get_startoff(rrp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | } |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1102 | be16_add_cpu(&left->bb_numrecs, -(be16_to_cpu(right->bb_numrecs))); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1103 | right->bb_rightsib = left->bb_rightsib; |
| 1104 | left->bb_rightsib = cpu_to_be64(args.fsbno); |
| 1105 | right->bb_leftsib = cpu_to_be64(lbno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | xfs_bmbt_log_block(cur, rbp, XFS_BB_ALL_BITS); |
| 1107 | xfs_bmbt_log_block(cur, lbp, XFS_BB_NUMRECS | XFS_BB_RIGHTSIB); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1108 | if (be64_to_cpu(right->bb_rightsib) != NULLDFSBNO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | if ((error = xfs_btree_read_bufl(args.mp, args.tp, |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1110 | be64_to_cpu(right->bb_rightsib), 0, &rrbp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | XFS_BMAP_BTREE_REF))) { |
| 1112 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1113 | return error; |
| 1114 | } |
| 1115 | rrblock = XFS_BUF_TO_BMBT_BLOCK(rrbp); |
| 1116 | if ((error = xfs_btree_check_lblock(cur, rrblock, level, rrbp))) { |
| 1117 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1118 | return error; |
| 1119 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1120 | rrblock->bb_leftsib = cpu_to_be64(args.fsbno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | xfs_bmbt_log_block(cur, rrbp, XFS_BB_LEFTSIB); |
| 1122 | } |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1123 | if (cur->bc_ptrs[level] > be16_to_cpu(left->bb_numrecs) + 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | xfs_btree_setbuf(cur, level, rbp); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1125 | cur->bc_ptrs[level] -= be16_to_cpu(left->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | } |
| 1127 | if (level + 1 < cur->bc_nlevels) { |
| 1128 | if ((error = xfs_btree_dup_cursor(cur, curp))) { |
| 1129 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1130 | return error; |
| 1131 | } |
| 1132 | (*curp)->bc_ptrs[level + 1]++; |
| 1133 | } |
| 1134 | *bnop = args.fsbno; |
| 1135 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 1136 | *stat = 1; |
| 1137 | return 0; |
| 1138 | } |
| 1139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | /* |
| 1141 | * Convert on-disk form of btree root to in-memory form. |
| 1142 | */ |
| 1143 | void |
| 1144 | xfs_bmdr_to_bmbt( |
| 1145 | xfs_bmdr_block_t *dblock, |
| 1146 | int dblocklen, |
| 1147 | xfs_bmbt_block_t *rblock, |
| 1148 | int rblocklen) |
| 1149 | { |
| 1150 | int dmxr; |
| 1151 | xfs_bmbt_key_t *fkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1152 | __be64 *fpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | xfs_bmbt_key_t *tkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1154 | __be64 *tpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1156 | rblock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC); |
| 1157 | rblock->bb_level = dblock->bb_level; |
| 1158 | ASSERT(be16_to_cpu(rblock->bb_level) > 0); |
| 1159 | rblock->bb_numrecs = dblock->bb_numrecs; |
| 1160 | rblock->bb_leftsib = cpu_to_be64(NULLDFSBNO); |
| 1161 | rblock->bb_rightsib = cpu_to_be64(NULLDFSBNO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | dmxr = (int)XFS_BTREE_BLOCK_MAXRECS(dblocklen, xfs_bmdr, 0); |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 1163 | fkp = XFS_BTREE_KEY_ADDR(xfs_bmdr, dblock, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | tkp = XFS_BMAP_BROOT_KEY_ADDR(rblock, 1, rblocklen); |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 1165 | fpp = XFS_BTREE_PTR_ADDR(xfs_bmdr, dblock, 1, dmxr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | tpp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, rblocklen); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1167 | dmxr = be16_to_cpu(dblock->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | memcpy(tkp, fkp, sizeof(*fkp) * dmxr); |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1169 | memcpy(tpp, fpp, sizeof(*fpp) * dmxr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | * Delete the record pointed to by cur. |
| 1174 | */ |
| 1175 | int /* error */ |
| 1176 | xfs_bmbt_delete( |
| 1177 | xfs_btree_cur_t *cur, |
| 1178 | int *stat) /* success/failure */ |
| 1179 | { |
| 1180 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | int i; |
| 1182 | int level; |
| 1183 | |
| 1184 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 1185 | for (level = 0, i = 2; i == 2; level++) { |
| 1186 | if ((error = xfs_bmbt_delrec(cur, level, &i))) { |
| 1187 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1188 | return error; |
| 1189 | } |
| 1190 | } |
| 1191 | if (i == 0) { |
| 1192 | for (level = 1; level < cur->bc_nlevels; level++) { |
| 1193 | if (cur->bc_ptrs[level] == 0) { |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 1194 | if ((error = xfs_btree_decrement(cur, level, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | &i))) { |
| 1196 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1197 | return error; |
| 1198 | } |
| 1199 | break; |
| 1200 | } |
| 1201 | } |
| 1202 | } |
| 1203 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 1204 | *stat = i; |
| 1205 | return 0; |
| 1206 | } |
| 1207 | |
| 1208 | /* |
| 1209 | * Convert a compressed bmap extent record to an uncompressed form. |
| 1210 | * This code must be in sync with the routines xfs_bmbt_get_startoff, |
| 1211 | * xfs_bmbt_get_startblock, xfs_bmbt_get_blockcount and xfs_bmbt_get_state. |
| 1212 | */ |
| 1213 | |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 1214 | STATIC_INLINE void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | __xfs_bmbt_get_all( |
| 1216 | __uint64_t l0, |
| 1217 | __uint64_t l1, |
| 1218 | xfs_bmbt_irec_t *s) |
| 1219 | { |
| 1220 | int ext_flag; |
| 1221 | xfs_exntst_t st; |
| 1222 | |
| 1223 | ext_flag = (int)(l0 >> (64 - BMBT_EXNTFLAG_BITLEN)); |
| 1224 | s->br_startoff = ((xfs_fileoff_t)l0 & |
| 1225 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
| 1226 | #if XFS_BIG_BLKNOS |
| 1227 | s->br_startblock = (((xfs_fsblock_t)l0 & XFS_MASK64LO(9)) << 43) | |
| 1228 | (((xfs_fsblock_t)l1) >> 21); |
| 1229 | #else |
| 1230 | #ifdef DEBUG |
| 1231 | { |
| 1232 | xfs_dfsbno_t b; |
| 1233 | |
| 1234 | b = (((xfs_dfsbno_t)l0 & XFS_MASK64LO(9)) << 43) | |
| 1235 | (((xfs_dfsbno_t)l1) >> 21); |
| 1236 | ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b)); |
| 1237 | s->br_startblock = (xfs_fsblock_t)b; |
| 1238 | } |
| 1239 | #else /* !DEBUG */ |
| 1240 | s->br_startblock = (xfs_fsblock_t)(((xfs_dfsbno_t)l1) >> 21); |
| 1241 | #endif /* DEBUG */ |
| 1242 | #endif /* XFS_BIG_BLKNOS */ |
| 1243 | s->br_blockcount = (xfs_filblks_t)(l1 & XFS_MASK64LO(21)); |
| 1244 | /* This is xfs_extent_state() in-line */ |
| 1245 | if (ext_flag) { |
| 1246 | ASSERT(s->br_blockcount != 0); /* saved for DMIG */ |
| 1247 | st = XFS_EXT_UNWRITTEN; |
| 1248 | } else |
| 1249 | st = XFS_EXT_NORM; |
| 1250 | s->br_state = st; |
| 1251 | } |
| 1252 | |
| 1253 | void |
| 1254 | xfs_bmbt_get_all( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1255 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | xfs_bmbt_irec_t *s) |
| 1257 | { |
| 1258 | __xfs_bmbt_get_all(r->l0, r->l1, s); |
| 1259 | } |
| 1260 | |
| 1261 | /* |
| 1262 | * Get the block pointer for the given level of the cursor. |
| 1263 | * Fill in the buffer pointer, if applicable. |
| 1264 | */ |
| 1265 | xfs_bmbt_block_t * |
| 1266 | xfs_bmbt_get_block( |
| 1267 | xfs_btree_cur_t *cur, |
| 1268 | int level, |
| 1269 | xfs_buf_t **bpp) |
| 1270 | { |
| 1271 | xfs_ifork_t *ifp; |
| 1272 | xfs_bmbt_block_t *rval; |
| 1273 | |
| 1274 | if (level < cur->bc_nlevels - 1) { |
| 1275 | *bpp = cur->bc_bufs[level]; |
| 1276 | rval = XFS_BUF_TO_BMBT_BLOCK(*bpp); |
| 1277 | } else { |
| 1278 | *bpp = NULL; |
| 1279 | ifp = XFS_IFORK_PTR(cur->bc_private.b.ip, |
| 1280 | cur->bc_private.b.whichfork); |
| 1281 | rval = ifp->if_broot; |
| 1282 | } |
| 1283 | return rval; |
| 1284 | } |
| 1285 | |
| 1286 | /* |
| 1287 | * Extract the blockcount field from an in memory bmap extent record. |
| 1288 | */ |
| 1289 | xfs_filblks_t |
| 1290 | xfs_bmbt_get_blockcount( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1291 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | { |
| 1293 | return (xfs_filblks_t)(r->l1 & XFS_MASK64LO(21)); |
| 1294 | } |
| 1295 | |
| 1296 | /* |
| 1297 | * Extract the startblock field from an in memory bmap extent record. |
| 1298 | */ |
| 1299 | xfs_fsblock_t |
| 1300 | xfs_bmbt_get_startblock( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1301 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | { |
| 1303 | #if XFS_BIG_BLKNOS |
| 1304 | return (((xfs_fsblock_t)r->l0 & XFS_MASK64LO(9)) << 43) | |
| 1305 | (((xfs_fsblock_t)r->l1) >> 21); |
| 1306 | #else |
| 1307 | #ifdef DEBUG |
| 1308 | xfs_dfsbno_t b; |
| 1309 | |
| 1310 | b = (((xfs_dfsbno_t)r->l0 & XFS_MASK64LO(9)) << 43) | |
| 1311 | (((xfs_dfsbno_t)r->l1) >> 21); |
| 1312 | ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b)); |
| 1313 | return (xfs_fsblock_t)b; |
| 1314 | #else /* !DEBUG */ |
| 1315 | return (xfs_fsblock_t)(((xfs_dfsbno_t)r->l1) >> 21); |
| 1316 | #endif /* DEBUG */ |
| 1317 | #endif /* XFS_BIG_BLKNOS */ |
| 1318 | } |
| 1319 | |
| 1320 | /* |
| 1321 | * Extract the startoff field from an in memory bmap extent record. |
| 1322 | */ |
| 1323 | xfs_fileoff_t |
| 1324 | xfs_bmbt_get_startoff( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1325 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1326 | { |
| 1327 | return ((xfs_fileoff_t)r->l0 & |
| 1328 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
| 1329 | } |
| 1330 | |
| 1331 | xfs_exntst_t |
| 1332 | xfs_bmbt_get_state( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1333 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | { |
| 1335 | int ext_flag; |
| 1336 | |
| 1337 | ext_flag = (int)((r->l0) >> (64 - BMBT_EXNTFLAG_BITLEN)); |
| 1338 | return xfs_extent_state(xfs_bmbt_get_blockcount(r), |
| 1339 | ext_flag); |
| 1340 | } |
| 1341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | /* Endian flipping versions of the bmbt extraction functions */ |
| 1343 | void |
| 1344 | xfs_bmbt_disk_get_all( |
| 1345 | xfs_bmbt_rec_t *r, |
| 1346 | xfs_bmbt_irec_t *s) |
| 1347 | { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1348 | __xfs_bmbt_get_all(be64_to_cpu(r->l0), be64_to_cpu(r->l1), s); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | } |
| 1350 | |
| 1351 | /* |
| 1352 | * Extract the blockcount field from an on disk bmap extent record. |
| 1353 | */ |
| 1354 | xfs_filblks_t |
| 1355 | xfs_bmbt_disk_get_blockcount( |
| 1356 | xfs_bmbt_rec_t *r) |
| 1357 | { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1358 | return (xfs_filblks_t)(be64_to_cpu(r->l1) & XFS_MASK64LO(21)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | } |
| 1360 | |
| 1361 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | * Extract the startoff field from a disk format bmap extent record. |
| 1363 | */ |
| 1364 | xfs_fileoff_t |
| 1365 | xfs_bmbt_disk_get_startoff( |
| 1366 | xfs_bmbt_rec_t *r) |
| 1367 | { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1368 | return ((xfs_fileoff_t)be64_to_cpu(r->l0) & |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
| 1370 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | |
| 1372 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | * Insert the current record at the point referenced by cur. |
David Chinner | 59a33f9 | 2008-03-27 18:00:45 +1100 | [diff] [blame] | 1374 | * |
| 1375 | * A multi-level split of the tree on insert will invalidate the original |
Lachlan McIlroy | ddea2d5 | 2008-06-23 13:25:53 +1000 | [diff] [blame] | 1376 | * cursor. All callers of this function should assume that the cursor is |
| 1377 | * no longer valid and revalidate it. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | */ |
| 1379 | int /* error */ |
| 1380 | xfs_bmbt_insert( |
| 1381 | xfs_btree_cur_t *cur, |
| 1382 | int *stat) /* success/failure */ |
| 1383 | { |
| 1384 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | int i; |
| 1386 | int level; |
| 1387 | xfs_fsblock_t nbno; |
| 1388 | xfs_btree_cur_t *ncur; |
| 1389 | xfs_bmbt_rec_t nrec; |
| 1390 | xfs_btree_cur_t *pcur; |
| 1391 | |
| 1392 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 1393 | level = 0; |
| 1394 | nbno = NULLFSBLOCK; |
| 1395 | xfs_bmbt_disk_set_all(&nrec, &cur->bc_rec.b); |
Nathan Scott | 1121b21 | 2006-09-28 10:58:40 +1000 | [diff] [blame] | 1396 | ncur = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | pcur = cur; |
| 1398 | do { |
| 1399 | if ((error = xfs_bmbt_insrec(pcur, level++, &nbno, &nrec, &ncur, |
| 1400 | &i))) { |
| 1401 | if (pcur != cur) |
| 1402 | xfs_btree_del_cursor(pcur, XFS_BTREE_ERROR); |
Lachlan McIlroy | ddea2d5 | 2008-06-23 13:25:53 +1000 | [diff] [blame] | 1403 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1404 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | } |
| 1406 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); |
| 1407 | if (pcur != cur && (ncur || nbno == NULLFSBLOCK)) { |
| 1408 | cur->bc_nlevels = pcur->bc_nlevels; |
| 1409 | cur->bc_private.b.allocated += |
| 1410 | pcur->bc_private.b.allocated; |
| 1411 | pcur->bc_private.b.allocated = 0; |
| 1412 | ASSERT((cur->bc_private.b.firstblock != NULLFSBLOCK) || |
Eric Sandeen | 71ddabb | 2007-11-23 16:29:42 +1100 | [diff] [blame] | 1413 | XFS_IS_REALTIME_INODE(cur->bc_private.b.ip)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | cur->bc_private.b.firstblock = |
| 1415 | pcur->bc_private.b.firstblock; |
| 1416 | ASSERT(cur->bc_private.b.flist == |
| 1417 | pcur->bc_private.b.flist); |
| 1418 | xfs_btree_del_cursor(pcur, XFS_BTREE_NOERROR); |
| 1419 | } |
| 1420 | if (ncur) { |
| 1421 | pcur = ncur; |
Nathan Scott | 1121b21 | 2006-09-28 10:58:40 +1000 | [diff] [blame] | 1422 | ncur = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | } |
| 1424 | } while (nbno != NULLFSBLOCK); |
| 1425 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 1426 | *stat = i; |
| 1427 | return 0; |
| 1428 | error0: |
| 1429 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1430 | return error; |
| 1431 | } |
| 1432 | |
| 1433 | /* |
| 1434 | * Log fields from the btree block header. |
| 1435 | */ |
| 1436 | void |
| 1437 | xfs_bmbt_log_block( |
| 1438 | xfs_btree_cur_t *cur, |
| 1439 | xfs_buf_t *bp, |
| 1440 | int fields) |
| 1441 | { |
| 1442 | int first; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | int last; |
| 1444 | xfs_trans_t *tp; |
| 1445 | static const short offsets[] = { |
| 1446 | offsetof(xfs_bmbt_block_t, bb_magic), |
| 1447 | offsetof(xfs_bmbt_block_t, bb_level), |
| 1448 | offsetof(xfs_bmbt_block_t, bb_numrecs), |
| 1449 | offsetof(xfs_bmbt_block_t, bb_leftsib), |
| 1450 | offsetof(xfs_bmbt_block_t, bb_rightsib), |
| 1451 | sizeof(xfs_bmbt_block_t) |
| 1452 | }; |
| 1453 | |
| 1454 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 1455 | XFS_BMBT_TRACE_ARGBI(cur, bp, fields); |
| 1456 | tp = cur->bc_tp; |
| 1457 | if (bp) { |
| 1458 | xfs_btree_offsets(fields, offsets, XFS_BB_NUM_BITS, &first, |
| 1459 | &last); |
| 1460 | xfs_trans_log_buf(tp, bp, first, last); |
| 1461 | } else |
| 1462 | xfs_trans_log_inode(tp, cur->bc_private.b.ip, |
| 1463 | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); |
| 1464 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 1465 | } |
| 1466 | |
| 1467 | /* |
| 1468 | * Log record values from the btree block. |
| 1469 | */ |
| 1470 | void |
| 1471 | xfs_bmbt_log_recs( |
| 1472 | xfs_btree_cur_t *cur, |
| 1473 | xfs_buf_t *bp, |
| 1474 | int rfirst, |
| 1475 | int rlast) |
| 1476 | { |
| 1477 | xfs_bmbt_block_t *block; |
| 1478 | int first; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | int last; |
| 1480 | xfs_bmbt_rec_t *rp; |
| 1481 | xfs_trans_t *tp; |
| 1482 | |
| 1483 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 1484 | XFS_BMBT_TRACE_ARGBII(cur, bp, rfirst, rlast); |
| 1485 | ASSERT(bp); |
| 1486 | tp = cur->bc_tp; |
| 1487 | block = XFS_BUF_TO_BMBT_BLOCK(bp); |
| 1488 | rp = XFS_BMAP_REC_DADDR(block, 1, cur); |
| 1489 | first = (int)((xfs_caddr_t)&rp[rfirst - 1] - (xfs_caddr_t)block); |
| 1490 | last = (int)(((xfs_caddr_t)&rp[rlast] - 1) - (xfs_caddr_t)block); |
| 1491 | xfs_trans_log_buf(tp, bp, first, last); |
| 1492 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 1493 | } |
| 1494 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | /* |
| 1496 | * Give the bmap btree a new root block. Copy the old broot contents |
| 1497 | * down into a real block and make the broot point to it. |
| 1498 | */ |
| 1499 | int /* error */ |
| 1500 | xfs_bmbt_newroot( |
| 1501 | xfs_btree_cur_t *cur, /* btree cursor */ |
| 1502 | int *logflags, /* logging flags for inode */ |
| 1503 | int *stat) /* return status - 0 fail */ |
| 1504 | { |
| 1505 | xfs_alloc_arg_t args; /* allocation arguments */ |
| 1506 | xfs_bmbt_block_t *block; /* bmap btree block */ |
| 1507 | xfs_buf_t *bp; /* buffer for block */ |
| 1508 | xfs_bmbt_block_t *cblock; /* child btree block */ |
| 1509 | xfs_bmbt_key_t *ckp; /* child key pointer */ |
| 1510 | xfs_bmbt_ptr_t *cpp; /* child ptr pointer */ |
| 1511 | int error; /* error return code */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | #ifdef DEBUG |
| 1513 | int i; /* loop counter */ |
| 1514 | #endif |
| 1515 | xfs_bmbt_key_t *kp; /* pointer to bmap btree key */ |
| 1516 | int level; /* btree level */ |
| 1517 | xfs_bmbt_ptr_t *pp; /* pointer to bmap block addr */ |
| 1518 | |
| 1519 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 1520 | level = cur->bc_nlevels - 1; |
| 1521 | block = xfs_bmbt_get_block(cur, level, &bp); |
| 1522 | /* |
| 1523 | * Copy the root into a real block. |
| 1524 | */ |
| 1525 | args.mp = cur->bc_mp; |
| 1526 | pp = XFS_BMAP_PTR_IADDR(block, 1, cur); |
| 1527 | args.tp = cur->bc_tp; |
| 1528 | args.fsbno = cur->bc_private.b.firstblock; |
| 1529 | args.mod = args.minleft = args.alignment = args.total = args.isfl = |
| 1530 | args.userdata = args.minalignslop = 0; |
| 1531 | args.minlen = args.maxlen = args.prod = 1; |
| 1532 | args.wasdel = cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL; |
Yingping Lu | d210a28 | 2006-06-09 14:55:18 +1000 | [diff] [blame] | 1533 | args.firstblock = args.fsbno; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | if (args.fsbno == NULLFSBLOCK) { |
| 1535 | #ifdef DEBUG |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 1536 | if ((error = xfs_btree_check_lptr_disk(cur, *pp, level))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1538 | return error; |
| 1539 | } |
| 1540 | #endif |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1541 | args.fsbno = be64_to_cpu(*pp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | args.type = XFS_ALLOCTYPE_START_BNO; |
Lachlan McIlroy | b877e3d | 2008-06-27 13:33:03 +1000 | [diff] [blame] | 1543 | } else if (cur->bc_private.b.flist->xbf_low) |
| 1544 | args.type = XFS_ALLOCTYPE_START_BNO; |
| 1545 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | args.type = XFS_ALLOCTYPE_NEAR_BNO; |
| 1547 | if ((error = xfs_alloc_vextent(&args))) { |
| 1548 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1549 | return error; |
| 1550 | } |
| 1551 | if (args.fsbno == NULLFSBLOCK) { |
| 1552 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 1553 | *stat = 0; |
| 1554 | return 0; |
| 1555 | } |
| 1556 | ASSERT(args.len == 1); |
| 1557 | cur->bc_private.b.firstblock = args.fsbno; |
| 1558 | cur->bc_private.b.allocated++; |
| 1559 | cur->bc_private.b.ip->i_d.di_nblocks++; |
| 1560 | XFS_TRANS_MOD_DQUOT_BYINO(args.mp, args.tp, cur->bc_private.b.ip, |
| 1561 | XFS_TRANS_DQ_BCOUNT, 1L); |
| 1562 | bp = xfs_btree_get_bufl(args.mp, cur->bc_tp, args.fsbno, 0); |
| 1563 | cblock = XFS_BUF_TO_BMBT_BLOCK(bp); |
| 1564 | *cblock = *block; |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1565 | be16_add_cpu(&block->bb_level, 1); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1566 | block->bb_numrecs = cpu_to_be16(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | cur->bc_nlevels++; |
| 1568 | cur->bc_ptrs[level + 1] = 1; |
| 1569 | kp = XFS_BMAP_KEY_IADDR(block, 1, cur); |
| 1570 | ckp = XFS_BMAP_KEY_IADDR(cblock, 1, cur); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1571 | memcpy(ckp, kp, be16_to_cpu(cblock->bb_numrecs) * sizeof(*kp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | cpp = XFS_BMAP_PTR_IADDR(cblock, 1, cur); |
| 1573 | #ifdef DEBUG |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1574 | for (i = 0; i < be16_to_cpu(cblock->bb_numrecs); i++) { |
Christoph Hellwig | b113bcb | 2006-09-28 10:57:42 +1000 | [diff] [blame] | 1575 | if ((error = xfs_btree_check_lptr_disk(cur, pp[i], level))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1577 | return error; |
| 1578 | } |
| 1579 | } |
| 1580 | #endif |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1581 | memcpy(cpp, pp, be16_to_cpu(cblock->bb_numrecs) * sizeof(*pp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | #ifdef DEBUG |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1583 | if ((error = xfs_btree_check_lptr(cur, args.fsbno, level))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
| 1585 | return error; |
| 1586 | } |
| 1587 | #endif |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1588 | *pp = cpu_to_be64(args.fsbno); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1589 | xfs_iroot_realloc(cur->bc_private.b.ip, 1 - be16_to_cpu(cblock->bb_numrecs), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | cur->bc_private.b.whichfork); |
| 1591 | xfs_btree_setbuf(cur, level, bp); |
| 1592 | /* |
| 1593 | * Do all this logging at the end so that |
| 1594 | * the root is at the right level. |
| 1595 | */ |
| 1596 | xfs_bmbt_log_block(cur, bp, XFS_BB_ALL_BITS); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1597 | xfs_bmbt_log_keys(cur, bp, 1, be16_to_cpu(cblock->bb_numrecs)); |
| 1598 | xfs_bmbt_log_ptrs(cur, bp, 1, be16_to_cpu(cblock->bb_numrecs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 1600 | *logflags |= |
| 1601 | XFS_ILOG_CORE | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork); |
| 1602 | *stat = 1; |
| 1603 | return 0; |
| 1604 | } |
| 1605 | |
| 1606 | /* |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1607 | * Set all the fields in a bmap extent record from the arguments. |
| 1608 | */ |
| 1609 | void |
| 1610 | xfs_bmbt_set_allf( |
| 1611 | xfs_bmbt_rec_host_t *r, |
| 1612 | xfs_fileoff_t startoff, |
| 1613 | xfs_fsblock_t startblock, |
| 1614 | xfs_filblks_t blockcount, |
| 1615 | xfs_exntst_t state) |
| 1616 | { |
| 1617 | int extent_flag = (state == XFS_EXT_NORM) ? 0 : 1; |
| 1618 | |
| 1619 | ASSERT(state == XFS_EXT_NORM || state == XFS_EXT_UNWRITTEN); |
| 1620 | ASSERT((startoff & XFS_MASK64HI(64-BMBT_STARTOFF_BITLEN)) == 0); |
| 1621 | ASSERT((blockcount & XFS_MASK64HI(64-BMBT_BLOCKCOUNT_BITLEN)) == 0); |
| 1622 | |
| 1623 | #if XFS_BIG_BLKNOS |
| 1624 | ASSERT((startblock & XFS_MASK64HI(64-BMBT_STARTBLOCK_BITLEN)) == 0); |
| 1625 | |
| 1626 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 1627 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 1628 | ((xfs_bmbt_rec_base_t)startblock >> 43); |
| 1629 | r->l1 = ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 1630 | ((xfs_bmbt_rec_base_t)blockcount & |
| 1631 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 1632 | #else /* !XFS_BIG_BLKNOS */ |
Michal Piotrowski | ddc6d3b | 2007-08-23 16:20:10 +1000 | [diff] [blame] | 1633 | if (ISNULLSTARTBLOCK(startblock)) { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1634 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 1635 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 1636 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(9); |
| 1637 | r->l1 = XFS_MASK64HI(11) | |
| 1638 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 1639 | ((xfs_bmbt_rec_base_t)blockcount & |
| 1640 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 1641 | } else { |
| 1642 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 1643 | ((xfs_bmbt_rec_base_t)startoff << 9); |
| 1644 | r->l1 = ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 1645 | ((xfs_bmbt_rec_base_t)blockcount & |
| 1646 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 1647 | } |
| 1648 | #endif /* XFS_BIG_BLKNOS */ |
| 1649 | } |
| 1650 | |
| 1651 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | * Set all the fields in a bmap extent record from the uncompressed form. |
| 1653 | */ |
| 1654 | void |
| 1655 | xfs_bmbt_set_all( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1656 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | xfs_bmbt_irec_t *s) |
| 1658 | { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1659 | xfs_bmbt_set_allf(r, s->br_startoff, s->br_startblock, |
| 1660 | s->br_blockcount, s->br_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | } |
| 1662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | /* |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1665 | * Set all the fields in a disk format bmap extent record from the arguments. |
| 1666 | */ |
| 1667 | void |
| 1668 | xfs_bmbt_disk_set_allf( |
| 1669 | xfs_bmbt_rec_t *r, |
| 1670 | xfs_fileoff_t startoff, |
| 1671 | xfs_fsblock_t startblock, |
| 1672 | xfs_filblks_t blockcount, |
| 1673 | xfs_exntst_t state) |
| 1674 | { |
| 1675 | int extent_flag = (state == XFS_EXT_NORM) ? 0 : 1; |
| 1676 | |
| 1677 | ASSERT(state == XFS_EXT_NORM || state == XFS_EXT_UNWRITTEN); |
| 1678 | ASSERT((startoff & XFS_MASK64HI(64-BMBT_STARTOFF_BITLEN)) == 0); |
| 1679 | ASSERT((blockcount & XFS_MASK64HI(64-BMBT_BLOCKCOUNT_BITLEN)) == 0); |
| 1680 | |
| 1681 | #if XFS_BIG_BLKNOS |
| 1682 | ASSERT((startblock & XFS_MASK64HI(64-BMBT_STARTBLOCK_BITLEN)) == 0); |
| 1683 | |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1684 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1685 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 1686 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 1687 | ((xfs_bmbt_rec_base_t)startblock >> 43)); |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1688 | r->l1 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1689 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 1690 | ((xfs_bmbt_rec_base_t)blockcount & |
| 1691 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); |
| 1692 | #else /* !XFS_BIG_BLKNOS */ |
Michal Piotrowski | ddc6d3b | 2007-08-23 16:20:10 +1000 | [diff] [blame] | 1693 | if (ISNULLSTARTBLOCK(startblock)) { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1694 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1695 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 1696 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 1697 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(9)); |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1698 | r->l1 = cpu_to_be64(XFS_MASK64HI(11) | |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1699 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 1700 | ((xfs_bmbt_rec_base_t)blockcount & |
| 1701 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); |
| 1702 | } else { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1703 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1704 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 1705 | ((xfs_bmbt_rec_base_t)startoff << 9)); |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 1706 | r->l1 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1707 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 1708 | ((xfs_bmbt_rec_base_t)blockcount & |
| 1709 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); |
| 1710 | } |
| 1711 | #endif /* XFS_BIG_BLKNOS */ |
| 1712 | } |
| 1713 | |
| 1714 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | * Set all the fields in a bmap extent record from the uncompressed form. |
| 1716 | */ |
| 1717 | void |
| 1718 | xfs_bmbt_disk_set_all( |
| 1719 | xfs_bmbt_rec_t *r, |
| 1720 | xfs_bmbt_irec_t *s) |
| 1721 | { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 1722 | xfs_bmbt_disk_set_allf(r, s->br_startoff, s->br_startblock, |
| 1723 | s->br_blockcount, s->br_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | |
| 1726 | /* |
| 1727 | * Set the blockcount field in a bmap extent record. |
| 1728 | */ |
| 1729 | void |
| 1730 | xfs_bmbt_set_blockcount( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1731 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1732 | xfs_filblks_t v) |
| 1733 | { |
| 1734 | ASSERT((v & XFS_MASK64HI(43)) == 0); |
| 1735 | r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64HI(43)) | |
| 1736 | (xfs_bmbt_rec_base_t)(v & XFS_MASK64LO(21)); |
| 1737 | } |
| 1738 | |
| 1739 | /* |
| 1740 | * Set the startblock field in a bmap extent record. |
| 1741 | */ |
| 1742 | void |
| 1743 | xfs_bmbt_set_startblock( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1744 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | xfs_fsblock_t v) |
| 1746 | { |
| 1747 | #if XFS_BIG_BLKNOS |
| 1748 | ASSERT((v & XFS_MASK64HI(12)) == 0); |
| 1749 | r->l0 = (r->l0 & (xfs_bmbt_rec_base_t)XFS_MASK64HI(55)) | |
| 1750 | (xfs_bmbt_rec_base_t)(v >> 43); |
| 1751 | r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)) | |
| 1752 | (xfs_bmbt_rec_base_t)(v << 21); |
| 1753 | #else /* !XFS_BIG_BLKNOS */ |
| 1754 | if (ISNULLSTARTBLOCK(v)) { |
| 1755 | r->l0 |= (xfs_bmbt_rec_base_t)XFS_MASK64LO(9); |
| 1756 | r->l1 = (xfs_bmbt_rec_base_t)XFS_MASK64HI(11) | |
| 1757 | ((xfs_bmbt_rec_base_t)v << 21) | |
| 1758 | (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 1759 | } else { |
| 1760 | r->l0 &= ~(xfs_bmbt_rec_base_t)XFS_MASK64LO(9); |
| 1761 | r->l1 = ((xfs_bmbt_rec_base_t)v << 21) | |
| 1762 | (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 1763 | } |
| 1764 | #endif /* XFS_BIG_BLKNOS */ |
| 1765 | } |
| 1766 | |
| 1767 | /* |
| 1768 | * Set the startoff field in a bmap extent record. |
| 1769 | */ |
| 1770 | void |
| 1771 | xfs_bmbt_set_startoff( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1772 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | xfs_fileoff_t v) |
| 1774 | { |
| 1775 | ASSERT((v & XFS_MASK64HI(9)) == 0); |
| 1776 | r->l0 = (r->l0 & (xfs_bmbt_rec_base_t) XFS_MASK64HI(1)) | |
| 1777 | ((xfs_bmbt_rec_base_t)v << 9) | |
| 1778 | (r->l0 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(9)); |
| 1779 | } |
| 1780 | |
| 1781 | /* |
| 1782 | * Set the extent state field in a bmap extent record. |
| 1783 | */ |
| 1784 | void |
| 1785 | xfs_bmbt_set_state( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1786 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | xfs_exntst_t v) |
| 1788 | { |
| 1789 | ASSERT(v == XFS_EXT_NORM || v == XFS_EXT_UNWRITTEN); |
| 1790 | if (v == XFS_EXT_NORM) |
| 1791 | r->l0 &= XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN); |
| 1792 | else |
| 1793 | r->l0 |= XFS_MASK64HI(BMBT_EXNTFLAG_BITLEN); |
| 1794 | } |
| 1795 | |
| 1796 | /* |
| 1797 | * Convert in-memory form of btree root to on-disk form. |
| 1798 | */ |
| 1799 | void |
| 1800 | xfs_bmbt_to_bmdr( |
| 1801 | xfs_bmbt_block_t *rblock, |
| 1802 | int rblocklen, |
| 1803 | xfs_bmdr_block_t *dblock, |
| 1804 | int dblocklen) |
| 1805 | { |
| 1806 | int dmxr; |
| 1807 | xfs_bmbt_key_t *fkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1808 | __be64 *fpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | xfs_bmbt_key_t *tkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1810 | __be64 *tpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1812 | ASSERT(be32_to_cpu(rblock->bb_magic) == XFS_BMAP_MAGIC); |
| 1813 | ASSERT(be64_to_cpu(rblock->bb_leftsib) == NULLDFSBNO); |
| 1814 | ASSERT(be64_to_cpu(rblock->bb_rightsib) == NULLDFSBNO); |
| 1815 | ASSERT(be16_to_cpu(rblock->bb_level) > 0); |
| 1816 | dblock->bb_level = rblock->bb_level; |
| 1817 | dblock->bb_numrecs = rblock->bb_numrecs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | dmxr = (int)XFS_BTREE_BLOCK_MAXRECS(dblocklen, xfs_bmdr, 0); |
| 1819 | fkp = XFS_BMAP_BROOT_KEY_ADDR(rblock, 1, rblocklen); |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 1820 | tkp = XFS_BTREE_KEY_ADDR(xfs_bmdr, dblock, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1821 | fpp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, rblocklen); |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 1822 | tpp = XFS_BTREE_PTR_ADDR(xfs_bmdr, dblock, 1, dmxr); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 1823 | dmxr = be16_to_cpu(dblock->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | memcpy(tkp, fkp, sizeof(*fkp) * dmxr); |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 1825 | memcpy(tpp, fpp, sizeof(*fpp) * dmxr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | } |
| 1827 | |
| 1828 | /* |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 1829 | * Check extent records, which have just been read, for |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | * any bit in the extent flag field. ASSERT on debug |
| 1831 | * kernels, as this condition should not occur. |
| 1832 | * Return an error condition (1) if any flags found, |
| 1833 | * otherwise return 0. |
| 1834 | */ |
| 1835 | |
| 1836 | int |
| 1837 | xfs_check_nostate_extents( |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 1838 | xfs_ifork_t *ifp, |
| 1839 | xfs_extnum_t idx, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | xfs_extnum_t num) |
| 1841 | { |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 1842 | for (; num > 0; num--, idx++) { |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1843 | xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | if ((ep->l0 >> |
| 1845 | (64 - BMBT_EXNTFLAG_BITLEN)) != 0) { |
| 1846 | ASSERT(0); |
| 1847 | return 1; |
| 1848 | } |
| 1849 | } |
| 1850 | return 0; |
| 1851 | } |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 1852 | |
| 1853 | |
| 1854 | STATIC struct xfs_btree_cur * |
| 1855 | xfs_bmbt_dup_cursor( |
| 1856 | struct xfs_btree_cur *cur) |
| 1857 | { |
| 1858 | struct xfs_btree_cur *new; |
| 1859 | |
| 1860 | new = xfs_bmbt_init_cursor(cur->bc_mp, cur->bc_tp, |
| 1861 | cur->bc_private.b.ip, cur->bc_private.b.whichfork); |
| 1862 | |
| 1863 | /* |
| 1864 | * Copy the firstblock, flist, and flags values, |
| 1865 | * since init cursor doesn't get them. |
| 1866 | */ |
| 1867 | new->bc_private.b.firstblock = cur->bc_private.b.firstblock; |
| 1868 | new->bc_private.b.flist = cur->bc_private.b.flist; |
| 1869 | new->bc_private.b.flags = cur->bc_private.b.flags; |
| 1870 | |
| 1871 | return new; |
| 1872 | } |
| 1873 | |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 1874 | STATIC int |
| 1875 | xfs_bmbt_get_maxrecs( |
| 1876 | struct xfs_btree_cur *cur, |
| 1877 | int level) |
| 1878 | { |
| 1879 | return XFS_BMAP_BLOCK_IMAXRECS(level, cur); |
| 1880 | } |
| 1881 | |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 1882 | STATIC void |
| 1883 | xfs_bmbt_init_key_from_rec( |
| 1884 | union xfs_btree_key *key, |
| 1885 | union xfs_btree_rec *rec) |
| 1886 | { |
| 1887 | key->bmbt.br_startoff = |
| 1888 | cpu_to_be64(xfs_bmbt_disk_get_startoff(&rec->bmbt)); |
| 1889 | } |
| 1890 | |
| 1891 | STATIC void |
| 1892 | xfs_bmbt_init_ptr_from_cur( |
| 1893 | struct xfs_btree_cur *cur, |
| 1894 | union xfs_btree_ptr *ptr) |
| 1895 | { |
| 1896 | ptr->l = 0; |
| 1897 | } |
| 1898 | |
| 1899 | STATIC __int64_t |
| 1900 | xfs_bmbt_key_diff( |
| 1901 | struct xfs_btree_cur *cur, |
| 1902 | union xfs_btree_key *key) |
| 1903 | { |
| 1904 | return (__int64_t)be64_to_cpu(key->bmbt.br_startoff) - |
| 1905 | cur->bc_rec.b.br_startoff; |
| 1906 | } |
| 1907 | |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 1908 | #ifdef XFS_BTREE_TRACE |
| 1909 | ktrace_t *xfs_bmbt_trace_buf; |
| 1910 | |
| 1911 | STATIC void |
| 1912 | xfs_bmbt_trace_enter( |
| 1913 | struct xfs_btree_cur *cur, |
| 1914 | const char *func, |
| 1915 | char *s, |
| 1916 | int type, |
| 1917 | int line, |
| 1918 | __psunsigned_t a0, |
| 1919 | __psunsigned_t a1, |
| 1920 | __psunsigned_t a2, |
| 1921 | __psunsigned_t a3, |
| 1922 | __psunsigned_t a4, |
| 1923 | __psunsigned_t a5, |
| 1924 | __psunsigned_t a6, |
| 1925 | __psunsigned_t a7, |
| 1926 | __psunsigned_t a8, |
| 1927 | __psunsigned_t a9, |
| 1928 | __psunsigned_t a10) |
| 1929 | { |
| 1930 | struct xfs_inode *ip = cur->bc_private.b.ip; |
| 1931 | int whichfork = cur->bc_private.b.whichfork; |
| 1932 | |
| 1933 | ktrace_enter(xfs_bmbt_trace_buf, |
| 1934 | (void *)((__psint_t)type | (whichfork << 8) | (line << 16)), |
| 1935 | (void *)func, (void *)s, (void *)ip, (void *)cur, |
| 1936 | (void *)a0, (void *)a1, (void *)a2, (void *)a3, |
| 1937 | (void *)a4, (void *)a5, (void *)a6, (void *)a7, |
| 1938 | (void *)a8, (void *)a9, (void *)a10); |
| 1939 | ktrace_enter(ip->i_btrace, |
| 1940 | (void *)((__psint_t)type | (whichfork << 8) | (line << 16)), |
| 1941 | (void *)func, (void *)s, (void *)ip, (void *)cur, |
| 1942 | (void *)a0, (void *)a1, (void *)a2, (void *)a3, |
| 1943 | (void *)a4, (void *)a5, (void *)a6, (void *)a7, |
| 1944 | (void *)a8, (void *)a9, (void *)a10); |
| 1945 | } |
| 1946 | |
| 1947 | STATIC void |
| 1948 | xfs_bmbt_trace_cursor( |
| 1949 | struct xfs_btree_cur *cur, |
| 1950 | __uint32_t *s0, |
| 1951 | __uint64_t *l0, |
| 1952 | __uint64_t *l1) |
| 1953 | { |
| 1954 | struct xfs_bmbt_rec_host r; |
| 1955 | |
| 1956 | xfs_bmbt_set_all(&r, &cur->bc_rec.b); |
| 1957 | |
| 1958 | *s0 = (cur->bc_nlevels << 24) | |
| 1959 | (cur->bc_private.b.flags << 16) | |
| 1960 | cur->bc_private.b.allocated; |
| 1961 | *l0 = r.l0; |
| 1962 | *l1 = r.l1; |
| 1963 | } |
| 1964 | |
| 1965 | STATIC void |
| 1966 | xfs_bmbt_trace_key( |
| 1967 | struct xfs_btree_cur *cur, |
| 1968 | union xfs_btree_key *key, |
| 1969 | __uint64_t *l0, |
| 1970 | __uint64_t *l1) |
| 1971 | { |
| 1972 | *l0 = be64_to_cpu(key->bmbt.br_startoff); |
| 1973 | *l1 = 0; |
| 1974 | } |
| 1975 | |
| 1976 | STATIC void |
| 1977 | xfs_bmbt_trace_record( |
| 1978 | struct xfs_btree_cur *cur, |
| 1979 | union xfs_btree_rec *rec, |
| 1980 | __uint64_t *l0, |
| 1981 | __uint64_t *l1, |
| 1982 | __uint64_t *l2) |
| 1983 | { |
| 1984 | struct xfs_bmbt_irec irec; |
| 1985 | |
| 1986 | xfs_bmbt_disk_get_all(&rec->bmbt, &irec); |
| 1987 | *l0 = irec.br_startoff; |
| 1988 | *l1 = irec.br_startblock; |
| 1989 | *l2 = irec.br_blockcount; |
| 1990 | } |
| 1991 | #endif /* XFS_BTREE_TRACE */ |
| 1992 | |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 1993 | static const struct xfs_btree_ops xfs_bmbt_ops = { |
Christoph Hellwig | 65f1eae | 2008-10-30 16:55:34 +1100 | [diff] [blame] | 1994 | .rec_len = sizeof(xfs_bmbt_rec_t), |
| 1995 | .key_len = sizeof(xfs_bmbt_key_t), |
| 1996 | |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 1997 | .dup_cursor = xfs_bmbt_dup_cursor, |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 1998 | .get_maxrecs = xfs_bmbt_get_maxrecs, |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 1999 | .init_key_from_rec = xfs_bmbt_init_key_from_rec, |
| 2000 | .init_ptr_from_cur = xfs_bmbt_init_ptr_from_cur, |
| 2001 | .key_diff = xfs_bmbt_key_diff, |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 2002 | |
| 2003 | #ifdef XFS_BTREE_TRACE |
| 2004 | .trace_enter = xfs_bmbt_trace_enter, |
| 2005 | .trace_cursor = xfs_bmbt_trace_cursor, |
| 2006 | .trace_key = xfs_bmbt_trace_key, |
| 2007 | .trace_record = xfs_bmbt_trace_record, |
| 2008 | #endif |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 2009 | }; |
| 2010 | |
| 2011 | /* |
| 2012 | * Allocate a new bmap btree cursor. |
| 2013 | */ |
| 2014 | struct xfs_btree_cur * /* new bmap btree cursor */ |
| 2015 | xfs_bmbt_init_cursor( |
| 2016 | struct xfs_mount *mp, /* file system mount point */ |
| 2017 | struct xfs_trans *tp, /* transaction pointer */ |
| 2018 | struct xfs_inode *ip, /* inode owning the btree */ |
| 2019 | int whichfork) /* data or attr fork */ |
| 2020 | { |
| 2021 | struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); |
| 2022 | struct xfs_btree_cur *cur; |
| 2023 | |
| 2024 | cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP); |
| 2025 | |
| 2026 | cur->bc_tp = tp; |
| 2027 | cur->bc_mp = mp; |
| 2028 | cur->bc_nlevels = be16_to_cpu(ifp->if_broot->bb_level) + 1; |
| 2029 | cur->bc_btnum = XFS_BTNUM_BMAP; |
| 2030 | cur->bc_blocklog = mp->m_sb.sb_blocklog; |
| 2031 | |
| 2032 | cur->bc_ops = &xfs_bmbt_ops; |
Christoph Hellwig | e99ab90 | 2008-10-30 16:54:33 +1100 | [diff] [blame] | 2033 | cur->bc_flags = XFS_BTREE_LONG_PTRS | XFS_BTREE_ROOT_IN_INODE; |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 2034 | |
| 2035 | cur->bc_private.b.forksize = XFS_IFORK_SIZE(ip, whichfork); |
| 2036 | cur->bc_private.b.ip = ip; |
| 2037 | cur->bc_private.b.firstblock = NULLFSBLOCK; |
| 2038 | cur->bc_private.b.flist = NULL; |
| 2039 | cur->bc_private.b.allocated = 0; |
| 2040 | cur->bc_private.b.flags = 0; |
| 2041 | cur->bc_private.b.whichfork = whichfork; |
| 2042 | |
| 2043 | return cur; |
| 2044 | } |