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 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | * Determine the extent state. |
| 49 | */ |
| 50 | /* ARGSUSED */ |
| 51 | STATIC xfs_exntst_t |
| 52 | xfs_extent_state( |
| 53 | xfs_filblks_t blks, |
| 54 | int extent_flag) |
| 55 | { |
| 56 | if (extent_flag) { |
| 57 | ASSERT(blks != 0); /* saved for DMIG */ |
| 58 | return XFS_EXT_UNWRITTEN; |
| 59 | } |
| 60 | return XFS_EXT_NORM; |
| 61 | } |
| 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | /* |
| 64 | * Convert on-disk form of btree root to in-memory form. |
| 65 | */ |
| 66 | void |
| 67 | xfs_bmdr_to_bmbt( |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 68 | struct xfs_mount *mp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | xfs_bmdr_block_t *dblock, |
| 70 | int dblocklen, |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 71 | struct xfs_btree_block *rblock, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | int rblocklen) |
| 73 | { |
| 74 | int dmxr; |
| 75 | xfs_bmbt_key_t *fkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 76 | __be64 *fpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | xfs_bmbt_key_t *tkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 78 | __be64 *tpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 80 | rblock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC); |
| 81 | rblock->bb_level = dblock->bb_level; |
| 82 | ASSERT(be16_to_cpu(rblock->bb_level) > 0); |
| 83 | rblock->bb_numrecs = dblock->bb_numrecs; |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 84 | rblock->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO); |
| 85 | rblock->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO); |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 86 | dmxr = xfs_bmdr_maxrecs(mp, dblocklen, 0); |
Christoph Hellwig | 136341b | 2008-10-30 17:11:40 +1100 | [diff] [blame] | 87 | fkp = XFS_BMDR_KEY_ADDR(dblock, 1); |
| 88 | tkp = XFS_BMBT_KEY_ADDR(mp, rblock, 1); |
| 89 | fpp = XFS_BMDR_PTR_ADDR(dblock, 1, dmxr); |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 90 | tpp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, rblocklen); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 91 | dmxr = be16_to_cpu(dblock->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | memcpy(tkp, fkp, sizeof(*fkp) * dmxr); |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 93 | memcpy(tpp, fpp, sizeof(*fpp) * dmxr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | } |
| 95 | |
| 96 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | * Convert a compressed bmap extent record to an uncompressed form. |
| 98 | * This code must be in sync with the routines xfs_bmbt_get_startoff, |
| 99 | * xfs_bmbt_get_startblock, xfs_bmbt_get_blockcount and xfs_bmbt_get_state. |
| 100 | */ |
| 101 | |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 102 | STATIC_INLINE void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | __xfs_bmbt_get_all( |
| 104 | __uint64_t l0, |
| 105 | __uint64_t l1, |
| 106 | xfs_bmbt_irec_t *s) |
| 107 | { |
| 108 | int ext_flag; |
| 109 | xfs_exntst_t st; |
| 110 | |
| 111 | ext_flag = (int)(l0 >> (64 - BMBT_EXNTFLAG_BITLEN)); |
| 112 | s->br_startoff = ((xfs_fileoff_t)l0 & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 113 | xfs_mask64lo(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | #if XFS_BIG_BLKNOS |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 115 | s->br_startblock = (((xfs_fsblock_t)l0 & xfs_mask64lo(9)) << 43) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | (((xfs_fsblock_t)l1) >> 21); |
| 117 | #else |
| 118 | #ifdef DEBUG |
| 119 | { |
| 120 | xfs_dfsbno_t b; |
| 121 | |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 122 | b = (((xfs_dfsbno_t)l0 & xfs_mask64lo(9)) << 43) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | (((xfs_dfsbno_t)l1) >> 21); |
Eric Sandeen | b6e3222 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 124 | ASSERT((b >> 32) == 0 || isnulldstartblock(b)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | s->br_startblock = (xfs_fsblock_t)b; |
| 126 | } |
| 127 | #else /* !DEBUG */ |
| 128 | s->br_startblock = (xfs_fsblock_t)(((xfs_dfsbno_t)l1) >> 21); |
| 129 | #endif /* DEBUG */ |
| 130 | #endif /* XFS_BIG_BLKNOS */ |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 131 | s->br_blockcount = (xfs_filblks_t)(l1 & xfs_mask64lo(21)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | /* This is xfs_extent_state() in-line */ |
| 133 | if (ext_flag) { |
| 134 | ASSERT(s->br_blockcount != 0); /* saved for DMIG */ |
| 135 | st = XFS_EXT_UNWRITTEN; |
| 136 | } else |
| 137 | st = XFS_EXT_NORM; |
| 138 | s->br_state = st; |
| 139 | } |
| 140 | |
| 141 | void |
| 142 | xfs_bmbt_get_all( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 143 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | xfs_bmbt_irec_t *s) |
| 145 | { |
| 146 | __xfs_bmbt_get_all(r->l0, r->l1, s); |
| 147 | } |
| 148 | |
| 149 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | * Extract the blockcount field from an in memory bmap extent record. |
| 151 | */ |
| 152 | xfs_filblks_t |
| 153 | xfs_bmbt_get_blockcount( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 154 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | { |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 156 | return (xfs_filblks_t)(r->l1 & xfs_mask64lo(21)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | /* |
| 160 | * Extract the startblock field from an in memory bmap extent record. |
| 161 | */ |
| 162 | xfs_fsblock_t |
| 163 | xfs_bmbt_get_startblock( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 164 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | { |
| 166 | #if XFS_BIG_BLKNOS |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 167 | return (((xfs_fsblock_t)r->l0 & xfs_mask64lo(9)) << 43) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | (((xfs_fsblock_t)r->l1) >> 21); |
| 169 | #else |
| 170 | #ifdef DEBUG |
| 171 | xfs_dfsbno_t b; |
| 172 | |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 173 | b = (((xfs_dfsbno_t)r->l0 & xfs_mask64lo(9)) << 43) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | (((xfs_dfsbno_t)r->l1) >> 21); |
Eric Sandeen | b6e3222 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 175 | ASSERT((b >> 32) == 0 || isnulldstartblock(b)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | return (xfs_fsblock_t)b; |
| 177 | #else /* !DEBUG */ |
| 178 | return (xfs_fsblock_t)(((xfs_dfsbno_t)r->l1) >> 21); |
| 179 | #endif /* DEBUG */ |
| 180 | #endif /* XFS_BIG_BLKNOS */ |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * Extract the startoff field from an in memory bmap extent record. |
| 185 | */ |
| 186 | xfs_fileoff_t |
| 187 | xfs_bmbt_get_startoff( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 188 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | { |
| 190 | return ((xfs_fileoff_t)r->l0 & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 191 | xfs_mask64lo(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | xfs_exntst_t |
| 195 | xfs_bmbt_get_state( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 196 | xfs_bmbt_rec_host_t *r) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | { |
| 198 | int ext_flag; |
| 199 | |
| 200 | ext_flag = (int)((r->l0) >> (64 - BMBT_EXNTFLAG_BITLEN)); |
| 201 | return xfs_extent_state(xfs_bmbt_get_blockcount(r), |
| 202 | ext_flag); |
| 203 | } |
| 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | /* Endian flipping versions of the bmbt extraction functions */ |
| 206 | void |
| 207 | xfs_bmbt_disk_get_all( |
| 208 | xfs_bmbt_rec_t *r, |
| 209 | xfs_bmbt_irec_t *s) |
| 210 | { |
Christoph Hellwig | ad1ad96 | 2008-12-22 09:59:06 -0500 | [diff] [blame] | 211 | __xfs_bmbt_get_all(get_unaligned_be64(&r->l0), |
| 212 | get_unaligned_be64(&r->l1), s); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | /* |
| 216 | * Extract the blockcount field from an on disk bmap extent record. |
| 217 | */ |
| 218 | xfs_filblks_t |
| 219 | xfs_bmbt_disk_get_blockcount( |
| 220 | xfs_bmbt_rec_t *r) |
| 221 | { |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 222 | return (xfs_filblks_t)(be64_to_cpu(r->l1) & xfs_mask64lo(21)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | * Extract the startoff field from a disk format bmap extent record. |
| 227 | */ |
| 228 | xfs_fileoff_t |
| 229 | xfs_bmbt_disk_get_startoff( |
| 230 | xfs_bmbt_rec_t *r) |
| 231 | { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 232 | return ((xfs_fileoff_t)be64_to_cpu(r->l0) & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 233 | xfs_mask64lo(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | /* |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 238 | * Set all the fields in a bmap extent record from the arguments. |
| 239 | */ |
| 240 | void |
| 241 | xfs_bmbt_set_allf( |
| 242 | xfs_bmbt_rec_host_t *r, |
| 243 | xfs_fileoff_t startoff, |
| 244 | xfs_fsblock_t startblock, |
| 245 | xfs_filblks_t blockcount, |
| 246 | xfs_exntst_t state) |
| 247 | { |
| 248 | int extent_flag = (state == XFS_EXT_NORM) ? 0 : 1; |
| 249 | |
| 250 | ASSERT(state == XFS_EXT_NORM || state == XFS_EXT_UNWRITTEN); |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 251 | ASSERT((startoff & xfs_mask64hi(64-BMBT_STARTOFF_BITLEN)) == 0); |
| 252 | ASSERT((blockcount & xfs_mask64hi(64-BMBT_BLOCKCOUNT_BITLEN)) == 0); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 253 | |
| 254 | #if XFS_BIG_BLKNOS |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 255 | ASSERT((startblock & xfs_mask64hi(64-BMBT_STARTBLOCK_BITLEN)) == 0); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 256 | |
| 257 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 258 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 259 | ((xfs_bmbt_rec_base_t)startblock >> 43); |
| 260 | r->l1 = ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 261 | ((xfs_bmbt_rec_base_t)blockcount & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 262 | (xfs_bmbt_rec_base_t)xfs_mask64lo(21)); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 263 | #else /* !XFS_BIG_BLKNOS */ |
Eric Sandeen | b6e3222 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 264 | if (isnullstartblock(startblock)) { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 265 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 266 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 267 | (xfs_bmbt_rec_base_t)xfs_mask64lo(9); |
| 268 | r->l1 = xfs_mask64hi(11) | |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 269 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 270 | ((xfs_bmbt_rec_base_t)blockcount & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 271 | (xfs_bmbt_rec_base_t)xfs_mask64lo(21)); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 272 | } else { |
| 273 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 274 | ((xfs_bmbt_rec_base_t)startoff << 9); |
| 275 | r->l1 = ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 276 | ((xfs_bmbt_rec_base_t)blockcount & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 277 | (xfs_bmbt_rec_base_t)xfs_mask64lo(21)); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 278 | } |
| 279 | #endif /* XFS_BIG_BLKNOS */ |
| 280 | } |
| 281 | |
| 282 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | * Set all the fields in a bmap extent record from the uncompressed form. |
| 284 | */ |
| 285 | void |
| 286 | xfs_bmbt_set_all( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 287 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | xfs_bmbt_irec_t *s) |
| 289 | { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 290 | xfs_bmbt_set_allf(r, s->br_startoff, s->br_startblock, |
| 291 | s->br_blockcount, s->br_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | /* |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 296 | * Set all the fields in a disk format bmap extent record from the arguments. |
| 297 | */ |
| 298 | void |
| 299 | xfs_bmbt_disk_set_allf( |
| 300 | xfs_bmbt_rec_t *r, |
| 301 | xfs_fileoff_t startoff, |
| 302 | xfs_fsblock_t startblock, |
| 303 | xfs_filblks_t blockcount, |
| 304 | xfs_exntst_t state) |
| 305 | { |
| 306 | int extent_flag = (state == XFS_EXT_NORM) ? 0 : 1; |
| 307 | |
| 308 | ASSERT(state == XFS_EXT_NORM || state == XFS_EXT_UNWRITTEN); |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 309 | ASSERT((startoff & xfs_mask64hi(64-BMBT_STARTOFF_BITLEN)) == 0); |
| 310 | ASSERT((blockcount & xfs_mask64hi(64-BMBT_BLOCKCOUNT_BITLEN)) == 0); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 311 | |
| 312 | #if XFS_BIG_BLKNOS |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 313 | ASSERT((startblock & xfs_mask64hi(64-BMBT_STARTBLOCK_BITLEN)) == 0); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 314 | |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 315 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 316 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 317 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
| 318 | ((xfs_bmbt_rec_base_t)startblock >> 43)); |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 319 | r->l1 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 320 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 321 | ((xfs_bmbt_rec_base_t)blockcount & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 322 | (xfs_bmbt_rec_base_t)xfs_mask64lo(21))); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 323 | #else /* !XFS_BIG_BLKNOS */ |
Eric Sandeen | b6e3222 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 324 | if (isnullstartblock(startblock)) { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 325 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 326 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 327 | ((xfs_bmbt_rec_base_t)startoff << 9) | |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 328 | (xfs_bmbt_rec_base_t)xfs_mask64lo(9)); |
| 329 | r->l1 = cpu_to_be64(xfs_mask64hi(11) | |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 330 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 331 | ((xfs_bmbt_rec_base_t)blockcount & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 332 | (xfs_bmbt_rec_base_t)xfs_mask64lo(21))); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 333 | } else { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 334 | r->l0 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 335 | ((xfs_bmbt_rec_base_t)extent_flag << 63) | |
| 336 | ((xfs_bmbt_rec_base_t)startoff << 9)); |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame] | 337 | r->l1 = cpu_to_be64( |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 338 | ((xfs_bmbt_rec_base_t)startblock << 21) | |
| 339 | ((xfs_bmbt_rec_base_t)blockcount & |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 340 | (xfs_bmbt_rec_base_t)xfs_mask64lo(21))); |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 341 | } |
| 342 | #endif /* XFS_BIG_BLKNOS */ |
| 343 | } |
| 344 | |
| 345 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | * Set all the fields in a bmap extent record from the uncompressed form. |
| 347 | */ |
| 348 | void |
| 349 | xfs_bmbt_disk_set_all( |
| 350 | xfs_bmbt_rec_t *r, |
| 351 | xfs_bmbt_irec_t *s) |
| 352 | { |
Christoph Hellwig | 8cba434 | 2007-08-16 16:23:53 +1000 | [diff] [blame] | 353 | xfs_bmbt_disk_set_allf(r, s->br_startoff, s->br_startblock, |
| 354 | s->br_blockcount, s->br_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | |
| 357 | /* |
| 358 | * Set the blockcount field in a bmap extent record. |
| 359 | */ |
| 360 | void |
| 361 | xfs_bmbt_set_blockcount( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 362 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | xfs_filblks_t v) |
| 364 | { |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 365 | ASSERT((v & xfs_mask64hi(43)) == 0); |
| 366 | r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64hi(43)) | |
| 367 | (xfs_bmbt_rec_base_t)(v & xfs_mask64lo(21)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | /* |
| 371 | * Set the startblock field in a bmap extent record. |
| 372 | */ |
| 373 | void |
| 374 | xfs_bmbt_set_startblock( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 375 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | xfs_fsblock_t v) |
| 377 | { |
| 378 | #if XFS_BIG_BLKNOS |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 379 | ASSERT((v & xfs_mask64hi(12)) == 0); |
| 380 | r->l0 = (r->l0 & (xfs_bmbt_rec_base_t)xfs_mask64hi(55)) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | (xfs_bmbt_rec_base_t)(v >> 43); |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 382 | r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64lo(21)) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | (xfs_bmbt_rec_base_t)(v << 21); |
| 384 | #else /* !XFS_BIG_BLKNOS */ |
Eric Sandeen | b6e3222 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 385 | if (isnullstartblock(v)) { |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 386 | r->l0 |= (xfs_bmbt_rec_base_t)xfs_mask64lo(9); |
| 387 | r->l1 = (xfs_bmbt_rec_base_t)xfs_mask64hi(11) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | ((xfs_bmbt_rec_base_t)v << 21) | |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 389 | (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64lo(21)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | } else { |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 391 | r->l0 &= ~(xfs_bmbt_rec_base_t)xfs_mask64lo(9); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | r->l1 = ((xfs_bmbt_rec_base_t)v << 21) | |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 393 | (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64lo(21)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
| 395 | #endif /* XFS_BIG_BLKNOS */ |
| 396 | } |
| 397 | |
| 398 | /* |
| 399 | * Set the startoff field in a bmap extent record. |
| 400 | */ |
| 401 | void |
| 402 | xfs_bmbt_set_startoff( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 403 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | xfs_fileoff_t v) |
| 405 | { |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 406 | ASSERT((v & xfs_mask64hi(9)) == 0); |
| 407 | r->l0 = (r->l0 & (xfs_bmbt_rec_base_t) xfs_mask64hi(1)) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | ((xfs_bmbt_rec_base_t)v << 9) | |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 409 | (r->l0 & (xfs_bmbt_rec_base_t)xfs_mask64lo(9)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Set the extent state field in a bmap extent record. |
| 414 | */ |
| 415 | void |
| 416 | xfs_bmbt_set_state( |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 417 | xfs_bmbt_rec_host_t *r, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | xfs_exntst_t v) |
| 419 | { |
| 420 | ASSERT(v == XFS_EXT_NORM || v == XFS_EXT_UNWRITTEN); |
| 421 | if (v == XFS_EXT_NORM) |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 422 | r->l0 &= xfs_mask64lo(64 - BMBT_EXNTFLAG_BITLEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | else |
Eric Sandeen | fb82557 | 2009-01-09 15:53:54 +1100 | [diff] [blame] | 424 | r->l0 |= xfs_mask64hi(BMBT_EXNTFLAG_BITLEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | } |
| 426 | |
| 427 | /* |
| 428 | * Convert in-memory form of btree root to on-disk form. |
| 429 | */ |
| 430 | void |
| 431 | xfs_bmbt_to_bmdr( |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 432 | struct xfs_mount *mp, |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 433 | struct xfs_btree_block *rblock, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | int rblocklen, |
| 435 | xfs_bmdr_block_t *dblock, |
| 436 | int dblocklen) |
| 437 | { |
| 438 | int dmxr; |
| 439 | xfs_bmbt_key_t *fkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 440 | __be64 *fpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | xfs_bmbt_key_t *tkp; |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 442 | __be64 *tpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 444 | ASSERT(be32_to_cpu(rblock->bb_magic) == XFS_BMAP_MAGIC); |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 445 | ASSERT(be64_to_cpu(rblock->bb_u.l.bb_leftsib) == NULLDFSBNO); |
| 446 | ASSERT(be64_to_cpu(rblock->bb_u.l.bb_rightsib) == NULLDFSBNO); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 447 | ASSERT(be16_to_cpu(rblock->bb_level) > 0); |
| 448 | dblock->bb_level = rblock->bb_level; |
| 449 | dblock->bb_numrecs = rblock->bb_numrecs; |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 450 | dmxr = xfs_bmdr_maxrecs(mp, dblocklen, 0); |
Christoph Hellwig | 136341b | 2008-10-30 17:11:40 +1100 | [diff] [blame] | 451 | fkp = XFS_BMBT_KEY_ADDR(mp, rblock, 1); |
| 452 | tkp = XFS_BMDR_KEY_ADDR(dblock, 1); |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 453 | fpp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, rblocklen); |
Christoph Hellwig | 136341b | 2008-10-30 17:11:40 +1100 | [diff] [blame] | 454 | tpp = XFS_BMDR_PTR_ADDR(dblock, 1, dmxr); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 455 | dmxr = be16_to_cpu(dblock->bb_numrecs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | memcpy(tkp, fkp, sizeof(*fkp) * dmxr); |
Christoph Hellwig | 576039c | 2006-09-28 10:58:06 +1000 | [diff] [blame] | 457 | memcpy(tpp, fpp, sizeof(*fpp) * dmxr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | } |
| 459 | |
| 460 | /* |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 461 | * Check extent records, which have just been read, for |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | * any bit in the extent flag field. ASSERT on debug |
| 463 | * kernels, as this condition should not occur. |
| 464 | * Return an error condition (1) if any flags found, |
| 465 | * otherwise return 0. |
| 466 | */ |
| 467 | |
| 468 | int |
| 469 | xfs_check_nostate_extents( |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 470 | xfs_ifork_t *ifp, |
| 471 | xfs_extnum_t idx, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | xfs_extnum_t num) |
| 473 | { |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 474 | for (; num > 0; num--, idx++) { |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 475 | xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | if ((ep->l0 >> |
| 477 | (64 - BMBT_EXNTFLAG_BITLEN)) != 0) { |
| 478 | ASSERT(0); |
| 479 | return 1; |
| 480 | } |
| 481 | } |
| 482 | return 0; |
| 483 | } |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 484 | |
| 485 | |
| 486 | STATIC struct xfs_btree_cur * |
| 487 | xfs_bmbt_dup_cursor( |
| 488 | struct xfs_btree_cur *cur) |
| 489 | { |
| 490 | struct xfs_btree_cur *new; |
| 491 | |
| 492 | new = xfs_bmbt_init_cursor(cur->bc_mp, cur->bc_tp, |
| 493 | cur->bc_private.b.ip, cur->bc_private.b.whichfork); |
| 494 | |
| 495 | /* |
| 496 | * Copy the firstblock, flist, and flags values, |
| 497 | * since init cursor doesn't get them. |
| 498 | */ |
| 499 | new->bc_private.b.firstblock = cur->bc_private.b.firstblock; |
| 500 | new->bc_private.b.flist = cur->bc_private.b.flist; |
| 501 | new->bc_private.b.flags = cur->bc_private.b.flags; |
| 502 | |
| 503 | return new; |
| 504 | } |
| 505 | |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 506 | STATIC void |
| 507 | xfs_bmbt_update_cursor( |
| 508 | struct xfs_btree_cur *src, |
| 509 | struct xfs_btree_cur *dst) |
| 510 | { |
| 511 | ASSERT((dst->bc_private.b.firstblock != NULLFSBLOCK) || |
| 512 | (dst->bc_private.b.ip->i_d.di_flags & XFS_DIFLAG_REALTIME)); |
| 513 | ASSERT(dst->bc_private.b.flist == src->bc_private.b.flist); |
| 514 | |
| 515 | dst->bc_private.b.allocated += src->bc_private.b.allocated; |
| 516 | dst->bc_private.b.firstblock = src->bc_private.b.firstblock; |
| 517 | |
| 518 | src->bc_private.b.allocated = 0; |
| 519 | } |
| 520 | |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 521 | STATIC int |
Christoph Hellwig | f5eb8e7 | 2008-10-30 16:57:03 +1100 | [diff] [blame] | 522 | xfs_bmbt_alloc_block( |
| 523 | struct xfs_btree_cur *cur, |
| 524 | union xfs_btree_ptr *start, |
| 525 | union xfs_btree_ptr *new, |
| 526 | int length, |
| 527 | int *stat) |
| 528 | { |
| 529 | xfs_alloc_arg_t args; /* block allocation args */ |
| 530 | int error; /* error return value */ |
| 531 | |
| 532 | memset(&args, 0, sizeof(args)); |
| 533 | args.tp = cur->bc_tp; |
| 534 | args.mp = cur->bc_mp; |
| 535 | args.fsbno = cur->bc_private.b.firstblock; |
| 536 | args.firstblock = args.fsbno; |
| 537 | |
| 538 | if (args.fsbno == NULLFSBLOCK) { |
| 539 | args.fsbno = be64_to_cpu(start->l); |
| 540 | args.type = XFS_ALLOCTYPE_START_BNO; |
| 541 | /* |
| 542 | * Make sure there is sufficient room left in the AG to |
| 543 | * complete a full tree split for an extent insert. If |
| 544 | * we are converting the middle part of an extent then |
| 545 | * we may need space for two tree splits. |
| 546 | * |
| 547 | * We are relying on the caller to make the correct block |
| 548 | * reservation for this operation to succeed. If the |
| 549 | * reservation amount is insufficient then we may fail a |
| 550 | * block allocation here and corrupt the filesystem. |
| 551 | */ |
| 552 | args.minleft = xfs_trans_get_block_res(args.tp); |
| 553 | } else if (cur->bc_private.b.flist->xbf_low) { |
| 554 | args.type = XFS_ALLOCTYPE_START_BNO; |
| 555 | } else { |
| 556 | args.type = XFS_ALLOCTYPE_NEAR_BNO; |
| 557 | } |
| 558 | |
| 559 | args.minlen = args.maxlen = args.prod = 1; |
| 560 | args.wasdel = cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL; |
| 561 | if (!args.wasdel && xfs_trans_get_block_res(args.tp) == 0) { |
| 562 | error = XFS_ERROR(ENOSPC); |
| 563 | goto error0; |
| 564 | } |
| 565 | error = xfs_alloc_vextent(&args); |
| 566 | if (error) |
| 567 | goto error0; |
| 568 | |
| 569 | if (args.fsbno == NULLFSBLOCK && args.minleft) { |
| 570 | /* |
| 571 | * Could not find an AG with enough free space to satisfy |
| 572 | * a full btree split. Try again without minleft and if |
| 573 | * successful activate the lowspace algorithm. |
| 574 | */ |
| 575 | args.fsbno = 0; |
| 576 | args.type = XFS_ALLOCTYPE_FIRST_AG; |
| 577 | args.minleft = 0; |
| 578 | error = xfs_alloc_vextent(&args); |
| 579 | if (error) |
| 580 | goto error0; |
| 581 | cur->bc_private.b.flist->xbf_low = 1; |
| 582 | } |
| 583 | if (args.fsbno == NULLFSBLOCK) { |
| 584 | XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT); |
| 585 | *stat = 0; |
| 586 | return 0; |
| 587 | } |
| 588 | ASSERT(args.len == 1); |
| 589 | cur->bc_private.b.firstblock = args.fsbno; |
| 590 | cur->bc_private.b.allocated++; |
| 591 | cur->bc_private.b.ip->i_d.di_nblocks++; |
| 592 | xfs_trans_log_inode(args.tp, cur->bc_private.b.ip, XFS_ILOG_CORE); |
| 593 | XFS_TRANS_MOD_DQUOT_BYINO(args.mp, args.tp, cur->bc_private.b.ip, |
| 594 | XFS_TRANS_DQ_BCOUNT, 1L); |
| 595 | |
| 596 | new->l = cpu_to_be64(args.fsbno); |
| 597 | |
| 598 | XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT); |
| 599 | *stat = 1; |
| 600 | return 0; |
| 601 | |
| 602 | error0: |
| 603 | XFS_BTREE_TRACE_CURSOR(cur, XBT_ERROR); |
| 604 | return error; |
| 605 | } |
| 606 | |
| 607 | STATIC int |
Christoph Hellwig | d4b3a4b | 2008-10-30 16:57:51 +1100 | [diff] [blame] | 608 | xfs_bmbt_free_block( |
| 609 | struct xfs_btree_cur *cur, |
| 610 | struct xfs_buf *bp) |
| 611 | { |
| 612 | struct xfs_mount *mp = cur->bc_mp; |
| 613 | struct xfs_inode *ip = cur->bc_private.b.ip; |
| 614 | struct xfs_trans *tp = cur->bc_tp; |
| 615 | xfs_fsblock_t fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp)); |
| 616 | |
| 617 | xfs_bmap_add_free(fsbno, 1, cur->bc_private.b.flist, mp); |
| 618 | ip->i_d.di_nblocks--; |
| 619 | |
| 620 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 621 | XFS_TRANS_MOD_DQUOT_BYINO(mp, tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); |
| 622 | xfs_trans_binval(tp, bp); |
| 623 | return 0; |
| 624 | } |
| 625 | |
| 626 | STATIC int |
Christoph Hellwig | 91cca5d | 2008-10-30 16:58:01 +1100 | [diff] [blame] | 627 | xfs_bmbt_get_minrecs( |
| 628 | struct xfs_btree_cur *cur, |
| 629 | int level) |
| 630 | { |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 631 | if (level == cur->bc_nlevels - 1) { |
| 632 | struct xfs_ifork *ifp; |
| 633 | |
| 634 | ifp = XFS_IFORK_PTR(cur->bc_private.b.ip, |
| 635 | cur->bc_private.b.whichfork); |
| 636 | |
| 637 | return xfs_bmbt_maxrecs(cur->bc_mp, |
| 638 | ifp->if_broot_bytes, level == 0) / 2; |
| 639 | } |
| 640 | |
| 641 | return cur->bc_mp->m_bmap_dmnr[level != 0]; |
Christoph Hellwig | 91cca5d | 2008-10-30 16:58:01 +1100 | [diff] [blame] | 642 | } |
| 643 | |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 644 | int |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 645 | xfs_bmbt_get_maxrecs( |
| 646 | struct xfs_btree_cur *cur, |
| 647 | int level) |
| 648 | { |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 649 | if (level == cur->bc_nlevels - 1) { |
| 650 | struct xfs_ifork *ifp; |
| 651 | |
| 652 | ifp = XFS_IFORK_PTR(cur->bc_private.b.ip, |
| 653 | cur->bc_private.b.whichfork); |
| 654 | |
| 655 | return xfs_bmbt_maxrecs(cur->bc_mp, |
| 656 | ifp->if_broot_bytes, level == 0); |
| 657 | } |
| 658 | |
| 659 | return cur->bc_mp->m_bmap_dmxr[level != 0]; |
| 660 | |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 661 | } |
| 662 | |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 663 | /* |
| 664 | * Get the maximum records we could store in the on-disk format. |
| 665 | * |
| 666 | * For non-root nodes this is equivalent to xfs_bmbt_get_maxrecs, but |
| 667 | * for the root node this checks the available space in the dinode fork |
| 668 | * so that we can resize the in-memory buffer to match it. After a |
| 669 | * resize to the maximum size this function returns the same value |
| 670 | * as xfs_bmbt_get_maxrecs for the root node, too. |
| 671 | */ |
| 672 | STATIC int |
| 673 | xfs_bmbt_get_dmaxrecs( |
| 674 | struct xfs_btree_cur *cur, |
| 675 | int level) |
| 676 | { |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 677 | if (level != cur->bc_nlevels - 1) |
| 678 | return cur->bc_mp->m_bmap_dmxr[level != 0]; |
| 679 | return xfs_bmdr_maxrecs(cur->bc_mp, cur->bc_private.b.forksize, |
| 680 | level == 0); |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 681 | } |
| 682 | |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 683 | STATIC void |
| 684 | xfs_bmbt_init_key_from_rec( |
| 685 | union xfs_btree_key *key, |
| 686 | union xfs_btree_rec *rec) |
| 687 | { |
| 688 | key->bmbt.br_startoff = |
| 689 | cpu_to_be64(xfs_bmbt_disk_get_startoff(&rec->bmbt)); |
| 690 | } |
| 691 | |
| 692 | STATIC void |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 693 | xfs_bmbt_init_rec_from_key( |
| 694 | union xfs_btree_key *key, |
| 695 | union xfs_btree_rec *rec) |
| 696 | { |
| 697 | ASSERT(key->bmbt.br_startoff != 0); |
| 698 | |
| 699 | xfs_bmbt_disk_set_allf(&rec->bmbt, be64_to_cpu(key->bmbt.br_startoff), |
| 700 | 0, 0, XFS_EXT_NORM); |
| 701 | } |
| 702 | |
| 703 | STATIC void |
| 704 | xfs_bmbt_init_rec_from_cur( |
| 705 | struct xfs_btree_cur *cur, |
| 706 | union xfs_btree_rec *rec) |
| 707 | { |
| 708 | xfs_bmbt_disk_set_all(&rec->bmbt, &cur->bc_rec.b); |
| 709 | } |
| 710 | |
| 711 | STATIC void |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 712 | xfs_bmbt_init_ptr_from_cur( |
| 713 | struct xfs_btree_cur *cur, |
| 714 | union xfs_btree_ptr *ptr) |
| 715 | { |
| 716 | ptr->l = 0; |
| 717 | } |
| 718 | |
| 719 | STATIC __int64_t |
| 720 | xfs_bmbt_key_diff( |
| 721 | struct xfs_btree_cur *cur, |
| 722 | union xfs_btree_key *key) |
| 723 | { |
| 724 | return (__int64_t)be64_to_cpu(key->bmbt.br_startoff) - |
| 725 | cur->bc_rec.b.br_startoff; |
| 726 | } |
| 727 | |
Christoph Hellwig | 4a26e66 | 2008-10-30 16:58:32 +1100 | [diff] [blame] | 728 | #ifdef DEBUG |
| 729 | STATIC int |
| 730 | xfs_bmbt_keys_inorder( |
| 731 | struct xfs_btree_cur *cur, |
| 732 | union xfs_btree_key *k1, |
| 733 | union xfs_btree_key *k2) |
| 734 | { |
| 735 | return be64_to_cpu(k1->bmbt.br_startoff) < |
| 736 | be64_to_cpu(k2->bmbt.br_startoff); |
| 737 | } |
| 738 | |
| 739 | STATIC int |
| 740 | xfs_bmbt_recs_inorder( |
| 741 | struct xfs_btree_cur *cur, |
| 742 | union xfs_btree_rec *r1, |
| 743 | union xfs_btree_rec *r2) |
| 744 | { |
| 745 | return xfs_bmbt_disk_get_startoff(&r1->bmbt) + |
| 746 | xfs_bmbt_disk_get_blockcount(&r1->bmbt) <= |
| 747 | xfs_bmbt_disk_get_startoff(&r2->bmbt); |
| 748 | } |
| 749 | #endif /* DEBUG */ |
| 750 | |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 751 | #ifdef XFS_BTREE_TRACE |
| 752 | ktrace_t *xfs_bmbt_trace_buf; |
| 753 | |
| 754 | STATIC void |
| 755 | xfs_bmbt_trace_enter( |
| 756 | struct xfs_btree_cur *cur, |
| 757 | const char *func, |
| 758 | char *s, |
| 759 | int type, |
| 760 | int line, |
| 761 | __psunsigned_t a0, |
| 762 | __psunsigned_t a1, |
| 763 | __psunsigned_t a2, |
| 764 | __psunsigned_t a3, |
| 765 | __psunsigned_t a4, |
| 766 | __psunsigned_t a5, |
| 767 | __psunsigned_t a6, |
| 768 | __psunsigned_t a7, |
| 769 | __psunsigned_t a8, |
| 770 | __psunsigned_t a9, |
| 771 | __psunsigned_t a10) |
| 772 | { |
| 773 | struct xfs_inode *ip = cur->bc_private.b.ip; |
| 774 | int whichfork = cur->bc_private.b.whichfork; |
| 775 | |
| 776 | ktrace_enter(xfs_bmbt_trace_buf, |
| 777 | (void *)((__psint_t)type | (whichfork << 8) | (line << 16)), |
| 778 | (void *)func, (void *)s, (void *)ip, (void *)cur, |
| 779 | (void *)a0, (void *)a1, (void *)a2, (void *)a3, |
| 780 | (void *)a4, (void *)a5, (void *)a6, (void *)a7, |
| 781 | (void *)a8, (void *)a9, (void *)a10); |
| 782 | ktrace_enter(ip->i_btrace, |
| 783 | (void *)((__psint_t)type | (whichfork << 8) | (line << 16)), |
| 784 | (void *)func, (void *)s, (void *)ip, (void *)cur, |
| 785 | (void *)a0, (void *)a1, (void *)a2, (void *)a3, |
| 786 | (void *)a4, (void *)a5, (void *)a6, (void *)a7, |
| 787 | (void *)a8, (void *)a9, (void *)a10); |
| 788 | } |
| 789 | |
| 790 | STATIC void |
| 791 | xfs_bmbt_trace_cursor( |
| 792 | struct xfs_btree_cur *cur, |
| 793 | __uint32_t *s0, |
| 794 | __uint64_t *l0, |
| 795 | __uint64_t *l1) |
| 796 | { |
| 797 | struct xfs_bmbt_rec_host r; |
| 798 | |
| 799 | xfs_bmbt_set_all(&r, &cur->bc_rec.b); |
| 800 | |
| 801 | *s0 = (cur->bc_nlevels << 24) | |
| 802 | (cur->bc_private.b.flags << 16) | |
| 803 | cur->bc_private.b.allocated; |
| 804 | *l0 = r.l0; |
| 805 | *l1 = r.l1; |
| 806 | } |
| 807 | |
| 808 | STATIC void |
| 809 | xfs_bmbt_trace_key( |
| 810 | struct xfs_btree_cur *cur, |
| 811 | union xfs_btree_key *key, |
| 812 | __uint64_t *l0, |
| 813 | __uint64_t *l1) |
| 814 | { |
| 815 | *l0 = be64_to_cpu(key->bmbt.br_startoff); |
| 816 | *l1 = 0; |
| 817 | } |
| 818 | |
| 819 | STATIC void |
| 820 | xfs_bmbt_trace_record( |
| 821 | struct xfs_btree_cur *cur, |
| 822 | union xfs_btree_rec *rec, |
| 823 | __uint64_t *l0, |
| 824 | __uint64_t *l1, |
| 825 | __uint64_t *l2) |
| 826 | { |
| 827 | struct xfs_bmbt_irec irec; |
| 828 | |
| 829 | xfs_bmbt_disk_get_all(&rec->bmbt, &irec); |
| 830 | *l0 = irec.br_startoff; |
| 831 | *l1 = irec.br_startblock; |
| 832 | *l2 = irec.br_blockcount; |
| 833 | } |
| 834 | #endif /* XFS_BTREE_TRACE */ |
| 835 | |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 836 | static const struct xfs_btree_ops xfs_bmbt_ops = { |
Christoph Hellwig | 65f1eae | 2008-10-30 16:55:34 +1100 | [diff] [blame] | 837 | .rec_len = sizeof(xfs_bmbt_rec_t), |
| 838 | .key_len = sizeof(xfs_bmbt_key_t), |
| 839 | |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 840 | .dup_cursor = xfs_bmbt_dup_cursor, |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 841 | .update_cursor = xfs_bmbt_update_cursor, |
Christoph Hellwig | f5eb8e7 | 2008-10-30 16:57:03 +1100 | [diff] [blame] | 842 | .alloc_block = xfs_bmbt_alloc_block, |
Christoph Hellwig | d4b3a4b | 2008-10-30 16:57:51 +1100 | [diff] [blame] | 843 | .free_block = xfs_bmbt_free_block, |
Christoph Hellwig | ce5e42d | 2008-10-30 16:55:23 +1100 | [diff] [blame] | 844 | .get_maxrecs = xfs_bmbt_get_maxrecs, |
Christoph Hellwig | 91cca5d | 2008-10-30 16:58:01 +1100 | [diff] [blame] | 845 | .get_minrecs = xfs_bmbt_get_minrecs, |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 846 | .get_dmaxrecs = xfs_bmbt_get_dmaxrecs, |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 847 | .init_key_from_rec = xfs_bmbt_init_key_from_rec, |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 848 | .init_rec_from_key = xfs_bmbt_init_rec_from_key, |
| 849 | .init_rec_from_cur = xfs_bmbt_init_rec_from_cur, |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 850 | .init_ptr_from_cur = xfs_bmbt_init_ptr_from_cur, |
| 851 | .key_diff = xfs_bmbt_key_diff, |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 852 | |
Christoph Hellwig | 4a26e66 | 2008-10-30 16:58:32 +1100 | [diff] [blame] | 853 | #ifdef DEBUG |
| 854 | .keys_inorder = xfs_bmbt_keys_inorder, |
| 855 | .recs_inorder = xfs_bmbt_recs_inorder, |
| 856 | #endif |
| 857 | |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 858 | #ifdef XFS_BTREE_TRACE |
| 859 | .trace_enter = xfs_bmbt_trace_enter, |
| 860 | .trace_cursor = xfs_bmbt_trace_cursor, |
| 861 | .trace_key = xfs_bmbt_trace_key, |
| 862 | .trace_record = xfs_bmbt_trace_record, |
| 863 | #endif |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 864 | }; |
| 865 | |
| 866 | /* |
| 867 | * Allocate a new bmap btree cursor. |
| 868 | */ |
| 869 | struct xfs_btree_cur * /* new bmap btree cursor */ |
| 870 | xfs_bmbt_init_cursor( |
| 871 | struct xfs_mount *mp, /* file system mount point */ |
| 872 | struct xfs_trans *tp, /* transaction pointer */ |
| 873 | struct xfs_inode *ip, /* inode owning the btree */ |
| 874 | int whichfork) /* data or attr fork */ |
| 875 | { |
| 876 | struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); |
| 877 | struct xfs_btree_cur *cur; |
| 878 | |
| 879 | cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP); |
| 880 | |
| 881 | cur->bc_tp = tp; |
| 882 | cur->bc_mp = mp; |
| 883 | cur->bc_nlevels = be16_to_cpu(ifp->if_broot->bb_level) + 1; |
| 884 | cur->bc_btnum = XFS_BTNUM_BMAP; |
| 885 | cur->bc_blocklog = mp->m_sb.sb_blocklog; |
| 886 | |
| 887 | cur->bc_ops = &xfs_bmbt_ops; |
Christoph Hellwig | e99ab90 | 2008-10-30 16:54:33 +1100 | [diff] [blame] | 888 | cur->bc_flags = XFS_BTREE_LONG_PTRS | XFS_BTREE_ROOT_IN_INODE; |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 889 | |
| 890 | cur->bc_private.b.forksize = XFS_IFORK_SIZE(ip, whichfork); |
| 891 | cur->bc_private.b.ip = ip; |
| 892 | cur->bc_private.b.firstblock = NULLFSBLOCK; |
| 893 | cur->bc_private.b.flist = NULL; |
| 894 | cur->bc_private.b.allocated = 0; |
| 895 | cur->bc_private.b.flags = 0; |
| 896 | cur->bc_private.b.whichfork = whichfork; |
| 897 | |
| 898 | return cur; |
| 899 | } |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 900 | |
| 901 | /* |
| 902 | * Calculate number of records in a bmap btree block. |
| 903 | */ |
| 904 | int |
| 905 | xfs_bmbt_maxrecs( |
| 906 | struct xfs_mount *mp, |
| 907 | int blocklen, |
| 908 | int leaf) |
| 909 | { |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 910 | blocklen -= XFS_BMBT_BLOCK_LEN(mp); |
Christoph Hellwig | 60197e8 | 2008-10-30 17:11:19 +1100 | [diff] [blame] | 911 | |
| 912 | if (leaf) |
| 913 | return blocklen / sizeof(xfs_bmbt_rec_t); |
| 914 | return blocklen / (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)); |
| 915 | } |
| 916 | |
| 917 | /* |
| 918 | * Calculate number of records in a bmap btree inode root. |
| 919 | */ |
| 920 | int |
| 921 | xfs_bmdr_maxrecs( |
| 922 | struct xfs_mount *mp, |
| 923 | int blocklen, |
| 924 | int leaf) |
| 925 | { |
| 926 | blocklen -= sizeof(xfs_bmdr_block_t); |
| 927 | |
| 928 | if (leaf) |
| 929 | return blocklen / sizeof(xfs_bmdr_rec_t); |
| 930 | return blocklen / (sizeof(xfs_bmdr_key_t) + sizeof(xfs_bmdr_ptr_t)); |
| 931 | } |