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 | #undef EXIT |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 48 | |
| 49 | #define ENTRY XBT_ENTRY |
| 50 | #define ERROR XBT_ERROR |
| 51 | #define EXIT XBT_EXIT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | /* |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 54 | * Keep the XFS_BMBT_TRACE_ names around for now until all code using them |
| 55 | * 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] | 56 | */ |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 57 | #define XFS_BMBT_TRACE_ARGBI(c,b,i) \ |
| 58 | XFS_BTREE_TRACE_ARGBI(c,b,i) |
| 59 | #define XFS_BMBT_TRACE_ARGBII(c,b,i,j) \ |
| 60 | XFS_BTREE_TRACE_ARGBII(c,b,i,j) |
| 61 | #define XFS_BMBT_TRACE_ARGFFFI(c,o,b,i,j) \ |
| 62 | XFS_BTREE_TRACE_ARGFFFI(c,o,b,i,j) |
| 63 | #define XFS_BMBT_TRACE_ARGI(c,i) \ |
| 64 | XFS_BTREE_TRACE_ARGI(c,i) |
| 65 | #define XFS_BMBT_TRACE_ARGIFK(c,i,f,s) \ |
| 66 | XFS_BTREE_TRACE_ARGIPK(c,i,(union xfs_btree_ptr)f,s) |
| 67 | #define XFS_BMBT_TRACE_ARGIFR(c,i,f,r) \ |
| 68 | XFS_BTREE_TRACE_ARGIPR(c,i, \ |
| 69 | (union xfs_btree_ptr)f, (union xfs_btree_rec *)r) |
| 70 | #define XFS_BMBT_TRACE_ARGIK(c,i,k) \ |
| 71 | XFS_BTREE_TRACE_ARGIK(c,i,(union xfs_btree_key *)k) |
| 72 | #define XFS_BMBT_TRACE_CURSOR(c,s) \ |
| 73 | XFS_BTREE_TRACE_CURSOR(c,s) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | * Determine the extent state. |
| 77 | */ |
| 78 | /* ARGSUSED */ |
| 79 | STATIC xfs_exntst_t |
| 80 | xfs_extent_state( |
| 81 | xfs_filblks_t blks, |
| 82 | int extent_flag) |
| 83 | { |
| 84 | if (extent_flag) { |
| 85 | ASSERT(blks != 0); /* saved for DMIG */ |
| 86 | return XFS_EXT_UNWRITTEN; |
| 87 | } |
| 88 | return XFS_EXT_NORM; |
| 89 | } |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | /* |
| 92 | * Convert on-disk form of btree root to in-memory form. |
| 93 | */ |
| 94 | void |
| 95 | xfs_bmdr_to_bmbt( |
| 96 | xfs_bmdr_block_t *dblock, |
| 97 | int dblocklen, |
| 98 | xfs_bmbt_block_t *rblock, |
| 99 | int rblocklen) |
| 100 | { |
| 101 | int dmxr; |
| 102 | xfs_bmbt_key_t *fkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 103 | __be64 *fpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | xfs_bmbt_key_t *tkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 105 | __be64 *tpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 107 | rblock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC); |
| 108 | rblock->bb_level = dblock->bb_level; |
| 109 | ASSERT(be16_to_cpu(rblock->bb_level) > 0); |
| 110 | rblock->bb_numrecs = dblock->bb_numrecs; |
| 111 | rblock->bb_leftsib = cpu_to_be64(NULLDFSBNO); |
| 112 | rblock->bb_rightsib = cpu_to_be64(NULLDFSBNO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | dmxr = (int)XFS_BTREE_BLOCK_MAXRECS(dblocklen, xfs_bmdr, 0); |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 114 | fkp = XFS_BTREE_KEY_ADDR(xfs_bmdr, dblock, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | tkp = XFS_BMAP_BROOT_KEY_ADDR(rblock, 1, rblocklen); |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 116 | fpp = XFS_BTREE_PTR_ADDR(xfs_bmdr, dblock, 1, dmxr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | tpp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, rblocklen); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 118 | dmxr = be16_to_cpu(dblock->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | memcpy(tkp, fkp, sizeof(*fkp) * dmxr); |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 120 | memcpy(tpp, fpp, sizeof(*fpp) * dmxr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | * Convert a compressed bmap extent record to an uncompressed form. |
| 125 | * This code must be in sync with the routines xfs_bmbt_get_startoff, |
| 126 | * xfs_bmbt_get_startblock, xfs_bmbt_get_blockcount and xfs_bmbt_get_state. |
| 127 | */ |
| 128 | |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 129 | STATIC_INLINE void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | __xfs_bmbt_get_all( |
| 131 | __uint64_t l0, |
| 132 | __uint64_t l1, |
| 133 | xfs_bmbt_irec_t *s) |
| 134 | { |
| 135 | int ext_flag; |
| 136 | xfs_exntst_t st; |
| 137 | |
| 138 | ext_flag = (int)(l0 >> (64 - BMBT_EXNTFLAG_BITLEN)); |
| 139 | s->br_startoff = ((xfs_fileoff_t)l0 & |
| 140 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
| 141 | #if XFS_BIG_BLKNOS |
| 142 | s->br_startblock = (((xfs_fsblock_t)l0 & XFS_MASK64LO(9)) << 43) | |
| 143 | (((xfs_fsblock_t)l1) >> 21); |
| 144 | #else |
| 145 | #ifdef DEBUG |
| 146 | { |
| 147 | xfs_dfsbno_t b; |
| 148 | |
| 149 | b = (((xfs_dfsbno_t)l0 & XFS_MASK64LO(9)) << 43) | |
| 150 | (((xfs_dfsbno_t)l1) >> 21); |
| 151 | ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b)); |
| 152 | s->br_startblock = (xfs_fsblock_t)b; |
| 153 | } |
| 154 | #else /* !DEBUG */ |
| 155 | s->br_startblock = (xfs_fsblock_t)(((xfs_dfsbno_t)l1) >> 21); |
| 156 | #endif /* DEBUG */ |
| 157 | #endif /* XFS_BIG_BLKNOS */ |
| 158 | s->br_blockcount = (xfs_filblks_t)(l1 & XFS_MASK64LO(21)); |
| 159 | /* This is xfs_extent_state() in-line */ |
| 160 | if (ext_flag) { |
| 161 | ASSERT(s->br_blockcount != 0); /* saved for DMIG */ |
| 162 | st = XFS_EXT_UNWRITTEN; |
| 163 | } else |
| 164 | st = XFS_EXT_NORM; |
| 165 | s->br_state = st; |
| 166 | } |
| 167 | |
| 168 | void |
| 169 | xfs_bmbt_get_all( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 170 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | xfs_bmbt_irec_t *s) |
| 172 | { |
| 173 | __xfs_bmbt_get_all(r->l0, r->l1, s); |
| 174 | } |
| 175 | |
| 176 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | * Extract the blockcount field from an in memory bmap extent record. |
| 178 | */ |
| 179 | xfs_filblks_t |
| 180 | xfs_bmbt_get_blockcount( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 181 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | { |
| 183 | return (xfs_filblks_t)(r->l1 & XFS_MASK64LO(21)); |
| 184 | } |
| 185 | |
| 186 | /* |
| 187 | * Extract the startblock field from an in memory bmap extent record. |
| 188 | */ |
| 189 | xfs_fsblock_t |
| 190 | xfs_bmbt_get_startblock( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 191 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | { |
| 193 | #if XFS_BIG_BLKNOS |
| 194 | return (((xfs_fsblock_t)r->l0 & XFS_MASK64LO(9)) << 43) | |
| 195 | (((xfs_fsblock_t)r->l1) >> 21); |
| 196 | #else |
| 197 | #ifdef DEBUG |
| 198 | xfs_dfsbno_t b; |
| 199 | |
| 200 | b = (((xfs_dfsbno_t)r->l0 & XFS_MASK64LO(9)) << 43) | |
| 201 | (((xfs_dfsbno_t)r->l1) >> 21); |
| 202 | ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b)); |
| 203 | return (xfs_fsblock_t)b; |
| 204 | #else /* !DEBUG */ |
| 205 | return (xfs_fsblock_t)(((xfs_dfsbno_t)r->l1) >> 21); |
| 206 | #endif /* DEBUG */ |
| 207 | #endif /* XFS_BIG_BLKNOS */ |
| 208 | } |
| 209 | |
| 210 | /* |
| 211 | * Extract the startoff field from an in memory bmap extent record. |
| 212 | */ |
| 213 | xfs_fileoff_t |
| 214 | xfs_bmbt_get_startoff( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 215 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | { |
| 217 | return ((xfs_fileoff_t)r->l0 & |
| 218 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
| 219 | } |
| 220 | |
| 221 | xfs_exntst_t |
| 222 | xfs_bmbt_get_state( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 223 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | { |
| 225 | int ext_flag; |
| 226 | |
| 227 | ext_flag = (int)((r->l0) >> (64 - BMBT_EXNTFLAG_BITLEN)); |
| 228 | return xfs_extent_state(xfs_bmbt_get_blockcount(r), |
| 229 | ext_flag); |
| 230 | } |
| 231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | /* Endian flipping versions of the bmbt extraction functions */ |
| 233 | void |
| 234 | xfs_bmbt_disk_get_all( |
| 235 | xfs_bmbt_rec_t *r, |
| 236 | xfs_bmbt_irec_t *s) |
| 237 | { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 238 | __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] | 239 | } |
| 240 | |
| 241 | /* |
| 242 | * Extract the blockcount field from an on disk bmap extent record. |
| 243 | */ |
| 244 | xfs_filblks_t |
| 245 | xfs_bmbt_disk_get_blockcount( |
| 246 | xfs_bmbt_rec_t *r) |
| 247 | { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 248 | return (xfs_filblks_t)(be64_to_cpu(r->l1) & XFS_MASK64LO(21)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | * Extract the startoff field from a disk format bmap extent record. |
| 253 | */ |
| 254 | xfs_fileoff_t |
| 255 | xfs_bmbt_disk_get_startoff( |
| 256 | xfs_bmbt_rec_t *r) |
| 257 | { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 258 | return ((xfs_fileoff_t)be64_to_cpu(r->l0) & |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
| 260 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | * Log fields from the btree block header. |
| 264 | */ |
| 265 | void |
| 266 | xfs_bmbt_log_block( |
| 267 | xfs_btree_cur_t *cur, |
| 268 | xfs_buf_t *bp, |
| 269 | int fields) |
| 270 | { |
| 271 | int first; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | int last; |
| 273 | xfs_trans_t *tp; |
| 274 | static const short offsets[] = { |
| 275 | offsetof(xfs_bmbt_block_t, bb_magic), |
| 276 | offsetof(xfs_bmbt_block_t, bb_level), |
| 277 | offsetof(xfs_bmbt_block_t, bb_numrecs), |
| 278 | offsetof(xfs_bmbt_block_t, bb_leftsib), |
| 279 | offsetof(xfs_bmbt_block_t, bb_rightsib), |
| 280 | sizeof(xfs_bmbt_block_t) |
| 281 | }; |
| 282 | |
| 283 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 284 | XFS_BMBT_TRACE_ARGBI(cur, bp, fields); |
| 285 | tp = cur->bc_tp; |
| 286 | if (bp) { |
| 287 | xfs_btree_offsets(fields, offsets, XFS_BB_NUM_BITS, &first, |
| 288 | &last); |
| 289 | xfs_trans_log_buf(tp, bp, first, last); |
| 290 | } else |
| 291 | xfs_trans_log_inode(tp, cur->bc_private.b.ip, |
| 292 | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); |
| 293 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 294 | } |
| 295 | |
| 296 | /* |
| 297 | * Log record values from the btree block. |
| 298 | */ |
| 299 | void |
| 300 | xfs_bmbt_log_recs( |
| 301 | xfs_btree_cur_t *cur, |
| 302 | xfs_buf_t *bp, |
| 303 | int rfirst, |
| 304 | int rlast) |
| 305 | { |
| 306 | xfs_bmbt_block_t *block; |
| 307 | int first; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | int last; |
| 309 | xfs_bmbt_rec_t *rp; |
| 310 | xfs_trans_t *tp; |
| 311 | |
| 312 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); |
| 313 | XFS_BMBT_TRACE_ARGBII(cur, bp, rfirst, rlast); |
| 314 | ASSERT(bp); |
| 315 | tp = cur->bc_tp; |
| 316 | block = XFS_BUF_TO_BMBT_BLOCK(bp); |
| 317 | rp = XFS_BMAP_REC_DADDR(block, 1, cur); |
| 318 | first = (int)((xfs_caddr_t)&rp[rfirst - 1] - (xfs_caddr_t)block); |
| 319 | last = (int)(((xfs_caddr_t)&rp[rlast] - 1) - (xfs_caddr_t)block); |
| 320 | xfs_trans_log_buf(tp, bp, first, last); |
| 321 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
| 322 | } |
| 323 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | /* |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 325 | * Set all the fields in a bmap extent record from the arguments. |
| 326 | */ |
| 327 | void |
| 328 | xfs_bmbt_set_allf( |
| 329 | xfs_bmbt_rec_host_t *r, |
| 330 | xfs_fileoff_t startoff, |
| 331 | xfs_fsblock_t startblock, |
| 332 | xfs_filblks_t blockcount, |
| 333 | xfs_exntst_t state) |
| 334 | { |
| 335 | int extent_flag = (state == XFS_EXT_NORM) ? 0 : 1; |
| 336 | |
| 337 | ASSERT(state == XFS_EXT_NORM || state == XFS_EXT_UNWRITTEN); |
| 338 | ASSERT((startoff & XFS_MASK64HI(64-BMBT_STARTOFF_BITLEN)) == 0); |
| 339 | ASSERT((blockcount & XFS_MASK64HI(64-BMBT_BLOCKCOUNT_BITLEN)) == 0); |
| 340 | |
| 341 | #if XFS_BIG_BLKNOS |
| 342 | ASSERT((startblock & XFS_MASK64HI(64-BMBT_STARTBLOCK_BITLEN)) == 0); |
| 343 | |
| 344 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 345 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 346 | ((xfs_bmbt_rec_base_t)startblock >> 43); |
| 347 | r->l1 = ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 348 | ((xfs_bmbt_rec_base_t)blockcount & |
| 349 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 350 | #else /* !XFS_BIG_BLKNOS */ |
Michal Piotrowski | ddc6d3b | 2007-08-23 16:20:10 +1000 | [diff] [blame] | 351 | if (ISNULLSTARTBLOCK(startblock)) { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 352 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 353 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 354 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(9); |
| 355 | r->l1 = XFS_MASK64HI(11) | |
| 356 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 357 | ((xfs_bmbt_rec_base_t)blockcount & |
| 358 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 359 | } else { |
| 360 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 361 | ((xfs_bmbt_rec_base_t)startoff << 9); |
| 362 | r->l1 = ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 363 | ((xfs_bmbt_rec_base_t)blockcount & |
| 364 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 365 | } |
| 366 | #endif /* XFS_BIG_BLKNOS */ |
| 367 | } |
| 368 | |
| 369 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | * Set all the fields in a bmap extent record from the uncompressed form. |
| 371 | */ |
| 372 | void |
| 373 | xfs_bmbt_set_all( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 374 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | xfs_bmbt_irec_t *s) |
| 376 | { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 377 | xfs_bmbt_set_allf(r, s->br_startoff, s->br_startblock, |
| 378 | s->br_blockcount, s->br_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | } |
| 380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | /* |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 383 | * Set all the fields in a disk format bmap extent record from the arguments. |
| 384 | */ |
| 385 | void |
| 386 | xfs_bmbt_disk_set_allf( |
| 387 | xfs_bmbt_rec_t *r, |
| 388 | xfs_fileoff_t startoff, |
| 389 | xfs_fsblock_t startblock, |
| 390 | xfs_filblks_t blockcount, |
| 391 | xfs_exntst_t state) |
| 392 | { |
| 393 | int extent_flag = (state == XFS_EXT_NORM) ? 0 : 1; |
| 394 | |
| 395 | ASSERT(state == XFS_EXT_NORM || state == XFS_EXT_UNWRITTEN); |
| 396 | ASSERT((startoff & XFS_MASK64HI(64-BMBT_STARTOFF_BITLEN)) == 0); |
| 397 | ASSERT((blockcount & XFS_MASK64HI(64-BMBT_BLOCKCOUNT_BITLEN)) == 0); |
| 398 | |
| 399 | #if XFS_BIG_BLKNOS |
| 400 | ASSERT((startblock & XFS_MASK64HI(64-BMBT_STARTBLOCK_BITLEN)) == 0); |
| 401 | |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 402 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 403 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 404 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 405 | ((xfs_bmbt_rec_base_t)startblock >> 43)); |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 406 | r->l1 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 407 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 408 | ((xfs_bmbt_rec_base_t)blockcount & |
| 409 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); |
| 410 | #else /* !XFS_BIG_BLKNOS */ |
Michal Piotrowski | ddc6d3b | 2007-08-23 16:20:10 +1000 | [diff] [blame] | 411 | if (ISNULLSTARTBLOCK(startblock)) { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 412 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 413 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 414 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 415 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(9)); |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 416 | r->l1 = cpu_to_be64(XFS_MASK64HI(11) | |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 417 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 418 | ((xfs_bmbt_rec_base_t)blockcount & |
| 419 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); |
| 420 | } else { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 421 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 422 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 423 | ((xfs_bmbt_rec_base_t)startoff << 9)); |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 424 | r->l1 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 425 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 426 | ((xfs_bmbt_rec_base_t)blockcount & |
| 427 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); |
| 428 | } |
| 429 | #endif /* XFS_BIG_BLKNOS */ |
| 430 | } |
| 431 | |
| 432 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | * Set all the fields in a bmap extent record from the uncompressed form. |
| 434 | */ |
| 435 | void |
| 436 | xfs_bmbt_disk_set_all( |
| 437 | xfs_bmbt_rec_t *r, |
| 438 | xfs_bmbt_irec_t *s) |
| 439 | { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 440 | xfs_bmbt_disk_set_allf(r, s->br_startoff, s->br_startblock, |
| 441 | s->br_blockcount, s->br_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
| 444 | /* |
| 445 | * Set the blockcount field in a bmap extent record. |
| 446 | */ |
| 447 | void |
| 448 | xfs_bmbt_set_blockcount( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 449 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | xfs_filblks_t v) |
| 451 | { |
| 452 | ASSERT((v & XFS_MASK64HI(43)) == 0); |
| 453 | r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64HI(43)) | |
| 454 | (xfs_bmbt_rec_base_t)(v & XFS_MASK64LO(21)); |
| 455 | } |
| 456 | |
| 457 | /* |
| 458 | * Set the startblock field in a bmap extent record. |
| 459 | */ |
| 460 | void |
| 461 | xfs_bmbt_set_startblock( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 462 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | xfs_fsblock_t v) |
| 464 | { |
| 465 | #if XFS_BIG_BLKNOS |
| 466 | ASSERT((v & XFS_MASK64HI(12)) == 0); |
| 467 | r->l0 = (r->l0 & (xfs_bmbt_rec_base_t)XFS_MASK64HI(55)) | |
| 468 | (xfs_bmbt_rec_base_t)(v >> 43); |
| 469 | r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)) | |
| 470 | (xfs_bmbt_rec_base_t)(v << 21); |
| 471 | #else /* !XFS_BIG_BLKNOS */ |
| 472 | if (ISNULLSTARTBLOCK(v)) { |
| 473 | r->l0 |= (xfs_bmbt_rec_base_t)XFS_MASK64LO(9); |
| 474 | r->l1 = (xfs_bmbt_rec_base_t)XFS_MASK64HI(11) | |
| 475 | ((xfs_bmbt_rec_base_t)v << 21) | |
| 476 | (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 477 | } else { |
| 478 | r->l0 &= ~(xfs_bmbt_rec_base_t)XFS_MASK64LO(9); |
| 479 | r->l1 = ((xfs_bmbt_rec_base_t)v << 21) | |
| 480 | (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); |
| 481 | } |
| 482 | #endif /* XFS_BIG_BLKNOS */ |
| 483 | } |
| 484 | |
| 485 | /* |
| 486 | * Set the startoff field in a bmap extent record. |
| 487 | */ |
| 488 | void |
| 489 | xfs_bmbt_set_startoff( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 490 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | xfs_fileoff_t v) |
| 492 | { |
| 493 | ASSERT((v & XFS_MASK64HI(9)) == 0); |
| 494 | r->l0 = (r->l0 & (xfs_bmbt_rec_base_t) XFS_MASK64HI(1)) | |
| 495 | ((xfs_bmbt_rec_base_t)v << 9) | |
| 496 | (r->l0 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(9)); |
| 497 | } |
| 498 | |
| 499 | /* |
| 500 | * Set the extent state field in a bmap extent record. |
| 501 | */ |
| 502 | void |
| 503 | xfs_bmbt_set_state( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 504 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | xfs_exntst_t v) |
| 506 | { |
| 507 | ASSERT(v == XFS_EXT_NORM || v == XFS_EXT_UNWRITTEN); |
| 508 | if (v == XFS_EXT_NORM) |
| 509 | r->l0 &= XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN); |
| 510 | else |
| 511 | r->l0 |= XFS_MASK64HI(BMBT_EXNTFLAG_BITLEN); |
| 512 | } |
| 513 | |
| 514 | /* |
| 515 | * Convert in-memory form of btree root to on-disk form. |
| 516 | */ |
| 517 | void |
| 518 | xfs_bmbt_to_bmdr( |
| 519 | xfs_bmbt_block_t *rblock, |
| 520 | int rblocklen, |
| 521 | xfs_bmdr_block_t *dblock, |
| 522 | int dblocklen) |
| 523 | { |
| 524 | int dmxr; |
| 525 | xfs_bmbt_key_t *fkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 526 | __be64 *fpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | xfs_bmbt_key_t *tkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 528 | __be64 *tpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 530 | ASSERT(be32_to_cpu(rblock->bb_magic) == XFS_BMAP_MAGIC); |
| 531 | ASSERT(be64_to_cpu(rblock->bb_leftsib) == NULLDFSBNO); |
| 532 | ASSERT(be64_to_cpu(rblock->bb_rightsib) == NULLDFSBNO); |
| 533 | ASSERT(be16_to_cpu(rblock->bb_level) > 0); |
| 534 | dblock->bb_level = rblock->bb_level; |
| 535 | dblock->bb_numrecs = rblock->bb_numrecs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | dmxr = (int)XFS_BTREE_BLOCK_MAXRECS(dblocklen, xfs_bmdr, 0); |
| 537 | fkp = XFS_BMAP_BROOT_KEY_ADDR(rblock, 1, rblocklen); |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 538 | tkp = XFS_BTREE_KEY_ADDR(xfs_bmdr, dblock, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | fpp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, rblocklen); |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 540 | tpp = XFS_BTREE_PTR_ADDR(xfs_bmdr, dblock, 1, dmxr); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 541 | dmxr = be16_to_cpu(dblock->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | memcpy(tkp, fkp, sizeof(*fkp) * dmxr); |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 543 | memcpy(tpp, fpp, sizeof(*fpp) * dmxr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | } |
| 545 | |
| 546 | /* |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 547 | * Check extent records, which have just been read, for |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | * any bit in the extent flag field. ASSERT on debug |
| 549 | * kernels, as this condition should not occur. |
| 550 | * Return an error condition (1) if any flags found, |
| 551 | * otherwise return 0. |
| 552 | */ |
| 553 | |
| 554 | int |
| 555 | xfs_check_nostate_extents( |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 556 | xfs_ifork_t *ifp, |
| 557 | xfs_extnum_t idx, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | xfs_extnum_t num) |
| 559 | { |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 560 | for (; num > 0; num--, idx++) { |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 561 | xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | if ((ep->l0 >> |
| 563 | (64 - BMBT_EXNTFLAG_BITLEN)) != 0) { |
| 564 | ASSERT(0); |
| 565 | return 1; |
| 566 | } |
| 567 | } |
| 568 | return 0; |
| 569 | } |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 570 | |
| 571 | |
| 572 | STATIC struct xfs_btree_cur * |
| 573 | xfs_bmbt_dup_cursor( |
| 574 | struct xfs_btree_cur *cur) |
| 575 | { |
| 576 | struct xfs_btree_cur *new; |
| 577 | |
| 578 | new = xfs_bmbt_init_cursor(cur->bc_mp, cur->bc_tp, |
| 579 | cur->bc_private.b.ip, cur->bc_private.b.whichfork); |
| 580 | |
| 581 | /* |
| 582 | * Copy the firstblock, flist, and flags values, |
| 583 | * since init cursor doesn't get them. |
| 584 | */ |
| 585 | new->bc_private.b.firstblock = cur->bc_private.b.firstblock; |
| 586 | new->bc_private.b.flist = cur->bc_private.b.flist; |
| 587 | new->bc_private.b.flags = cur->bc_private.b.flags; |
| 588 | |
| 589 | return new; |
| 590 | } |
| 591 | |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 592 | STATIC void |
| 593 | xfs_bmbt_update_cursor( |
| 594 | struct xfs_btree_cur *src, |
| 595 | struct xfs_btree_cur *dst) |
| 596 | { |
| 597 | ASSERT((dst->bc_private.b.firstblock != NULLFSBLOCK) || |
| 598 | (dst->bc_private.b.ip->i_d.di_flags & XFS_DIFLAG_REALTIME)); |
| 599 | ASSERT(dst->bc_private.b.flist == src->bc_private.b.flist); |
| 600 | |
| 601 | dst->bc_private.b.allocated += src->bc_private.b.allocated; |
| 602 | dst->bc_private.b.firstblock = src->bc_private.b.firstblock; |
| 603 | |
| 604 | src->bc_private.b.allocated = 0; |
| 605 | } |
| 606 | |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 607 | STATIC int |
Christoph Hellwig | f5eb8e7 | 2008-10-30 16:57:03 +1100 | [diff] [blame] | 608 | xfs_bmbt_alloc_block( |
| 609 | struct xfs_btree_cur *cur, |
| 610 | union xfs_btree_ptr *start, |
| 611 | union xfs_btree_ptr *new, |
| 612 | int length, |
| 613 | int *stat) |
| 614 | { |
| 615 | xfs_alloc_arg_t args; /* block allocation args */ |
| 616 | int error; /* error return value */ |
| 617 | |
| 618 | memset(&args, 0, sizeof(args)); |
| 619 | args.tp = cur->bc_tp; |
| 620 | args.mp = cur->bc_mp; |
| 621 | args.fsbno = cur->bc_private.b.firstblock; |
| 622 | args.firstblock = args.fsbno; |
| 623 | |
| 624 | if (args.fsbno == NULLFSBLOCK) { |
| 625 | args.fsbno = be64_to_cpu(start->l); |
| 626 | args.type = XFS_ALLOCTYPE_START_BNO; |
| 627 | /* |
| 628 | * Make sure there is sufficient room left in the AG to |
| 629 | * complete a full tree split for an extent insert. If |
| 630 | * we are converting the middle part of an extent then |
| 631 | * we may need space for two tree splits. |
| 632 | * |
| 633 | * We are relying on the caller to make the correct block |
| 634 | * reservation for this operation to succeed. If the |
| 635 | * reservation amount is insufficient then we may fail a |
| 636 | * block allocation here and corrupt the filesystem. |
| 637 | */ |
| 638 | args.minleft = xfs_trans_get_block_res(args.tp); |
| 639 | } else if (cur->bc_private.b.flist->xbf_low) { |
| 640 | args.type = XFS_ALLOCTYPE_START_BNO; |
| 641 | } else { |
| 642 | args.type = XFS_ALLOCTYPE_NEAR_BNO; |
| 643 | } |
| 644 | |
| 645 | args.minlen = args.maxlen = args.prod = 1; |
| 646 | args.wasdel = cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL; |
| 647 | if (!args.wasdel && xfs_trans_get_block_res(args.tp) == 0) { |
| 648 | error = XFS_ERROR(ENOSPC); |
| 649 | goto error0; |
| 650 | } |
| 651 | error = xfs_alloc_vextent(&args); |
| 652 | if (error) |
| 653 | goto error0; |
| 654 | |
| 655 | if (args.fsbno == NULLFSBLOCK && args.minleft) { |
| 656 | /* |
| 657 | * Could not find an AG with enough free space to satisfy |
| 658 | * a full btree split. Try again without minleft and if |
| 659 | * successful activate the lowspace algorithm. |
| 660 | */ |
| 661 | args.fsbno = 0; |
| 662 | args.type = XFS_ALLOCTYPE_FIRST_AG; |
| 663 | args.minleft = 0; |
| 664 | error = xfs_alloc_vextent(&args); |
| 665 | if (error) |
| 666 | goto error0; |
| 667 | cur->bc_private.b.flist->xbf_low = 1; |
| 668 | } |
| 669 | if (args.fsbno == NULLFSBLOCK) { |
| 670 | XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT); |
| 671 | *stat = 0; |
| 672 | return 0; |
| 673 | } |
| 674 | ASSERT(args.len == 1); |
| 675 | cur->bc_private.b.firstblock = args.fsbno; |
| 676 | cur->bc_private.b.allocated++; |
| 677 | cur->bc_private.b.ip->i_d.di_nblocks++; |
| 678 | xfs_trans_log_inode(args.tp, cur->bc_private.b.ip, XFS_ILOG_CORE); |
| 679 | XFS_TRANS_MOD_DQUOT_BYINO(args.mp, args.tp, cur->bc_private.b.ip, |
| 680 | XFS_TRANS_DQ_BCOUNT, 1L); |
| 681 | |
| 682 | new->l = cpu_to_be64(args.fsbno); |
| 683 | |
| 684 | XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT); |
| 685 | *stat = 1; |
| 686 | return 0; |
| 687 | |
| 688 | error0: |
| 689 | XFS_BTREE_TRACE_CURSOR(cur, XBT_ERROR); |
| 690 | return error; |
| 691 | } |
| 692 | |
| 693 | STATIC int |
Christoph Hellwig | d4b3a4b | 2008-10-30 16:57:51 +1100 | [diff] [blame] | 694 | xfs_bmbt_free_block( |
| 695 | struct xfs_btree_cur *cur, |
| 696 | struct xfs_buf *bp) |
| 697 | { |
| 698 | struct xfs_mount *mp = cur->bc_mp; |
| 699 | struct xfs_inode *ip = cur->bc_private.b.ip; |
| 700 | struct xfs_trans *tp = cur->bc_tp; |
| 701 | xfs_fsblock_t fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp)); |
| 702 | |
| 703 | xfs_bmap_add_free(fsbno, 1, cur->bc_private.b.flist, mp); |
| 704 | ip->i_d.di_nblocks--; |
| 705 | |
| 706 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 707 | XFS_TRANS_MOD_DQUOT_BYINO(mp, tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); |
| 708 | xfs_trans_binval(tp, bp); |
| 709 | return 0; |
| 710 | } |
| 711 | |
| 712 | STATIC int |
Christoph Hellwig | 91cca5df | 2008-10-30 16:58:01 +1100 | [diff] [blame^] | 713 | xfs_bmbt_get_minrecs( |
| 714 | struct xfs_btree_cur *cur, |
| 715 | int level) |
| 716 | { |
| 717 | return XFS_BMAP_BLOCK_IMINRECS(level, cur); |
| 718 | } |
| 719 | |
| 720 | STATIC int |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 721 | xfs_bmbt_get_maxrecs( |
| 722 | struct xfs_btree_cur *cur, |
| 723 | int level) |
| 724 | { |
| 725 | return XFS_BMAP_BLOCK_IMAXRECS(level, cur); |
| 726 | } |
| 727 | |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 728 | /* |
| 729 | * Get the maximum records we could store in the on-disk format. |
| 730 | * |
| 731 | * For non-root nodes this is equivalent to xfs_bmbt_get_maxrecs, but |
| 732 | * for the root node this checks the available space in the dinode fork |
| 733 | * so that we can resize the in-memory buffer to match it. After a |
| 734 | * resize to the maximum size this function returns the same value |
| 735 | * as xfs_bmbt_get_maxrecs for the root node, too. |
| 736 | */ |
| 737 | STATIC int |
| 738 | xfs_bmbt_get_dmaxrecs( |
| 739 | struct xfs_btree_cur *cur, |
| 740 | int level) |
| 741 | { |
| 742 | return XFS_BMAP_BLOCK_DMAXRECS(level, cur); |
| 743 | } |
| 744 | |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 745 | STATIC void |
| 746 | xfs_bmbt_init_key_from_rec( |
| 747 | union xfs_btree_key *key, |
| 748 | union xfs_btree_rec *rec) |
| 749 | { |
| 750 | key->bmbt.br_startoff = |
| 751 | cpu_to_be64(xfs_bmbt_disk_get_startoff(&rec->bmbt)); |
| 752 | } |
| 753 | |
| 754 | STATIC void |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 755 | xfs_bmbt_init_rec_from_key( |
| 756 | union xfs_btree_key *key, |
| 757 | union xfs_btree_rec *rec) |
| 758 | { |
| 759 | ASSERT(key->bmbt.br_startoff != 0); |
| 760 | |
| 761 | xfs_bmbt_disk_set_allf(&rec->bmbt, be64_to_cpu(key->bmbt.br_startoff), |
| 762 | 0, 0, XFS_EXT_NORM); |
| 763 | } |
| 764 | |
| 765 | STATIC void |
| 766 | xfs_bmbt_init_rec_from_cur( |
| 767 | struct xfs_btree_cur *cur, |
| 768 | union xfs_btree_rec *rec) |
| 769 | { |
| 770 | xfs_bmbt_disk_set_all(&rec->bmbt, &cur->bc_rec.b); |
| 771 | } |
| 772 | |
| 773 | STATIC void |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 774 | xfs_bmbt_init_ptr_from_cur( |
| 775 | struct xfs_btree_cur *cur, |
| 776 | union xfs_btree_ptr *ptr) |
| 777 | { |
| 778 | ptr->l = 0; |
| 779 | } |
| 780 | |
| 781 | STATIC __int64_t |
| 782 | xfs_bmbt_key_diff( |
| 783 | struct xfs_btree_cur *cur, |
| 784 | union xfs_btree_key *key) |
| 785 | { |
| 786 | return (__int64_t)be64_to_cpu(key->bmbt.br_startoff) - |
| 787 | cur->bc_rec.b.br_startoff; |
| 788 | } |
| 789 | |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 790 | #ifdef XFS_BTREE_TRACE |
| 791 | ktrace_t *xfs_bmbt_trace_buf; |
| 792 | |
| 793 | STATIC void |
| 794 | xfs_bmbt_trace_enter( |
| 795 | struct xfs_btree_cur *cur, |
| 796 | const char *func, |
| 797 | char *s, |
| 798 | int type, |
| 799 | int line, |
| 800 | __psunsigned_t a0, |
| 801 | __psunsigned_t a1, |
| 802 | __psunsigned_t a2, |
| 803 | __psunsigned_t a3, |
| 804 | __psunsigned_t a4, |
| 805 | __psunsigned_t a5, |
| 806 | __psunsigned_t a6, |
| 807 | __psunsigned_t a7, |
| 808 | __psunsigned_t a8, |
| 809 | __psunsigned_t a9, |
| 810 | __psunsigned_t a10) |
| 811 | { |
| 812 | struct xfs_inode *ip = cur->bc_private.b.ip; |
| 813 | int whichfork = cur->bc_private.b.whichfork; |
| 814 | |
| 815 | ktrace_enter(xfs_bmbt_trace_buf, |
| 816 | (void *)((__psint_t)type | (whichfork << 8) | (line << 16)), |
| 817 | (void *)func, (void *)s, (void *)ip, (void *)cur, |
| 818 | (void *)a0, (void *)a1, (void *)a2, (void *)a3, |
| 819 | (void *)a4, (void *)a5, (void *)a6, (void *)a7, |
| 820 | (void *)a8, (void *)a9, (void *)a10); |
| 821 | ktrace_enter(ip->i_btrace, |
| 822 | (void *)((__psint_t)type | (whichfork << 8) | (line << 16)), |
| 823 | (void *)func, (void *)s, (void *)ip, (void *)cur, |
| 824 | (void *)a0, (void *)a1, (void *)a2, (void *)a3, |
| 825 | (void *)a4, (void *)a5, (void *)a6, (void *)a7, |
| 826 | (void *)a8, (void *)a9, (void *)a10); |
| 827 | } |
| 828 | |
| 829 | STATIC void |
| 830 | xfs_bmbt_trace_cursor( |
| 831 | struct xfs_btree_cur *cur, |
| 832 | __uint32_t *s0, |
| 833 | __uint64_t *l0, |
| 834 | __uint64_t *l1) |
| 835 | { |
| 836 | struct xfs_bmbt_rec_host r; |
| 837 | |
| 838 | xfs_bmbt_set_all(&r, &cur->bc_rec.b); |
| 839 | |
| 840 | *s0 = (cur->bc_nlevels << 24) | |
| 841 | (cur->bc_private.b.flags << 16) | |
| 842 | cur->bc_private.b.allocated; |
| 843 | *l0 = r.l0; |
| 844 | *l1 = r.l1; |
| 845 | } |
| 846 | |
| 847 | STATIC void |
| 848 | xfs_bmbt_trace_key( |
| 849 | struct xfs_btree_cur *cur, |
| 850 | union xfs_btree_key *key, |
| 851 | __uint64_t *l0, |
| 852 | __uint64_t *l1) |
| 853 | { |
| 854 | *l0 = be64_to_cpu(key->bmbt.br_startoff); |
| 855 | *l1 = 0; |
| 856 | } |
| 857 | |
| 858 | STATIC void |
| 859 | xfs_bmbt_trace_record( |
| 860 | struct xfs_btree_cur *cur, |
| 861 | union xfs_btree_rec *rec, |
| 862 | __uint64_t *l0, |
| 863 | __uint64_t *l1, |
| 864 | __uint64_t *l2) |
| 865 | { |
| 866 | struct xfs_bmbt_irec irec; |
| 867 | |
| 868 | xfs_bmbt_disk_get_all(&rec->bmbt, &irec); |
| 869 | *l0 = irec.br_startoff; |
| 870 | *l1 = irec.br_startblock; |
| 871 | *l2 = irec.br_blockcount; |
| 872 | } |
| 873 | #endif /* XFS_BTREE_TRACE */ |
| 874 | |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 875 | static const struct xfs_btree_ops xfs_bmbt_ops = { |
Christoph Hellwig | 65f1eae | 2008-10-30 16:55:34 +1100 | [diff] [blame] | 876 | .rec_len = sizeof(xfs_bmbt_rec_t), |
| 877 | .key_len = sizeof(xfs_bmbt_key_t), |
| 878 | |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 879 | .dup_cursor = xfs_bmbt_dup_cursor, |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 880 | .update_cursor = xfs_bmbt_update_cursor, |
Christoph Hellwig | f5eb8e7 | 2008-10-30 16:57:03 +1100 | [diff] [blame] | 881 | .alloc_block = xfs_bmbt_alloc_block, |
Christoph Hellwig | d4b3a4b | 2008-10-30 16:57:51 +1100 | [diff] [blame] | 882 | .free_block = xfs_bmbt_free_block, |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 883 | .get_maxrecs = xfs_bmbt_get_maxrecs, |
Christoph Hellwig | 91cca5df | 2008-10-30 16:58:01 +1100 | [diff] [blame^] | 884 | .get_minrecs = xfs_bmbt_get_minrecs, |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 885 | .get_dmaxrecs = xfs_bmbt_get_dmaxrecs, |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 886 | .init_key_from_rec = xfs_bmbt_init_key_from_rec, |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 887 | .init_rec_from_key = xfs_bmbt_init_rec_from_key, |
| 888 | .init_rec_from_cur = xfs_bmbt_init_rec_from_cur, |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 889 | .init_ptr_from_cur = xfs_bmbt_init_ptr_from_cur, |
| 890 | .key_diff = xfs_bmbt_key_diff, |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 891 | |
| 892 | #ifdef XFS_BTREE_TRACE |
| 893 | .trace_enter = xfs_bmbt_trace_enter, |
| 894 | .trace_cursor = xfs_bmbt_trace_cursor, |
| 895 | .trace_key = xfs_bmbt_trace_key, |
| 896 | .trace_record = xfs_bmbt_trace_record, |
| 897 | #endif |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 898 | }; |
| 899 | |
| 900 | /* |
| 901 | * Allocate a new bmap btree cursor. |
| 902 | */ |
| 903 | struct xfs_btree_cur * /* new bmap btree cursor */ |
| 904 | xfs_bmbt_init_cursor( |
| 905 | struct xfs_mount *mp, /* file system mount point */ |
| 906 | struct xfs_trans *tp, /* transaction pointer */ |
| 907 | struct xfs_inode *ip, /* inode owning the btree */ |
| 908 | int whichfork) /* data or attr fork */ |
| 909 | { |
| 910 | struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); |
| 911 | struct xfs_btree_cur *cur; |
| 912 | |
| 913 | cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP); |
| 914 | |
| 915 | cur->bc_tp = tp; |
| 916 | cur->bc_mp = mp; |
| 917 | cur->bc_nlevels = be16_to_cpu(ifp->if_broot->bb_level) + 1; |
| 918 | cur->bc_btnum = XFS_BTNUM_BMAP; |
| 919 | cur->bc_blocklog = mp->m_sb.sb_blocklog; |
| 920 | |
| 921 | cur->bc_ops = &xfs_bmbt_ops; |
Christoph Hellwig | e99ab90 | 2008-10-30 16:54:33 +1100 | [diff] [blame] | 922 | cur->bc_flags = XFS_BTREE_LONG_PTRS | XFS_BTREE_ROOT_IN_INODE; |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 923 | |
| 924 | cur->bc_private.b.forksize = XFS_IFORK_SIZE(ip, whichfork); |
| 925 | cur->bc_private.b.ip = ip; |
| 926 | cur->bc_private.b.firstblock = NULLFSBLOCK; |
| 927 | cur->bc_private.b.flist = NULL; |
| 928 | cur->bc_private.b.allocated = 0; |
| 929 | cur->bc_private.b.flags = 0; |
| 930 | cur->bc_private.b.whichfork = whichfork; |
| 931 | |
| 932 | return cur; |
| 933 | } |