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) 2000-2005 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_inum.h" |
| 23 | #include "xfs_log.h" |
| 24 | #include "xfs_trans.h" |
| 25 | #include "xfs_sb.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 26 | #include "xfs_ag.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 27 | #include "xfs_dir2.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_btree.h" |
| 39 | #include "xfs_error.h" |
| 40 | #include "xfs_alloc.h" |
| 41 | #include "xfs_ialloc.h" |
| 42 | #include "xfs_fsops.h" |
| 43 | #include "xfs_itable.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include "xfs_trans_space.h" |
| 45 | #include "xfs_rtalloc.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 46 | #include "xfs_rw.h" |
David Chinner | 2a82b8b | 2007-07-11 11:09:12 +1000 | [diff] [blame] | 47 | #include "xfs_filestream.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | /* |
| 50 | * File system operations |
| 51 | */ |
| 52 | |
| 53 | int |
| 54 | xfs_fs_geometry( |
| 55 | xfs_mount_t *mp, |
| 56 | xfs_fsop_geom_t *geo, |
| 57 | int new_version) |
| 58 | { |
| 59 | geo->blocksize = mp->m_sb.sb_blocksize; |
| 60 | geo->rtextsize = mp->m_sb.sb_rextsize; |
| 61 | geo->agblocks = mp->m_sb.sb_agblocks; |
| 62 | geo->agcount = mp->m_sb.sb_agcount; |
| 63 | geo->logblocks = mp->m_sb.sb_logblocks; |
| 64 | geo->sectsize = mp->m_sb.sb_sectsize; |
| 65 | geo->inodesize = mp->m_sb.sb_inodesize; |
| 66 | geo->imaxpct = mp->m_sb.sb_imax_pct; |
| 67 | geo->datablocks = mp->m_sb.sb_dblocks; |
| 68 | geo->rtblocks = mp->m_sb.sb_rblocks; |
| 69 | geo->rtextents = mp->m_sb.sb_rextents; |
| 70 | geo->logstart = mp->m_sb.sb_logstart; |
| 71 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); |
| 72 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); |
| 73 | if (new_version >= 2) { |
| 74 | geo->sunit = mp->m_sb.sb_unit; |
| 75 | geo->swidth = mp->m_sb.sb_width; |
| 76 | } |
| 77 | if (new_version >= 3) { |
| 78 | geo->version = XFS_FSOP_GEOM_VERSION; |
| 79 | geo->flags = |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 80 | (xfs_sb_version_hasattr(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 82 | (xfs_sb_version_hasnlink(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | XFS_FSOP_GEOM_FLAGS_NLINK : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 84 | (xfs_sb_version_hasquota(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 86 | (xfs_sb_version_hasalign(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 88 | (xfs_sb_version_hasdalign(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 90 | (xfs_sb_version_hasshared(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | XFS_FSOP_GEOM_FLAGS_SHARED : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 92 | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 94 | (xfs_sb_version_hasdirv2(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 96 | (xfs_sb_version_hassector(&mp->m_sb) ? |
Nathan Scott | d8cc890 | 2005-11-02 10:34:53 +1100 | [diff] [blame] | 97 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
Barry Naujok | 189f4bf | 2008-05-21 16:58:55 +1000 | [diff] [blame] | 98 | (xfs_sb_version_hasasciici(&mp->m_sb) ? |
| 99 | XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) | |
David Chinner | 92821e2 | 2007-05-24 15:26:31 +1000 | [diff] [blame] | 100 | (xfs_sb_version_haslazysbcount(&mp->m_sb) ? |
| 101 | XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 102 | (xfs_sb_version_hasattr2(&mp->m_sb) ? |
Nathan Scott | d8cc890 | 2005-11-02 10:34:53 +1100 | [diff] [blame] | 103 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0); |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 104 | geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | mp->m_sb.sb_logsectsize : BBSIZE; |
| 106 | geo->rtsectsize = mp->m_sb.sb_blocksize; |
| 107 | geo->dirblocksize = mp->m_dirblksize; |
| 108 | } |
| 109 | if (new_version >= 4) { |
| 110 | geo->flags |= |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 111 | (xfs_sb_version_haslogv2(&mp->m_sb) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); |
| 113 | geo->logsunit = mp->m_sb.sb_logsunit; |
| 114 | } |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | static int |
| 119 | xfs_growfs_data_private( |
| 120 | xfs_mount_t *mp, /* mount point for filesystem */ |
| 121 | xfs_growfs_data_t *in) /* growfs data input struct */ |
| 122 | { |
| 123 | xfs_agf_t *agf; |
| 124 | xfs_agi_t *agi; |
| 125 | xfs_agnumber_t agno; |
| 126 | xfs_extlen_t agsize; |
| 127 | xfs_extlen_t tmpsize; |
| 128 | xfs_alloc_rec_t *arec; |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 129 | struct xfs_btree_block *block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | xfs_buf_t *bp; |
| 131 | int bucket; |
| 132 | int dpct; |
| 133 | int error; |
| 134 | xfs_agnumber_t nagcount; |
| 135 | xfs_agnumber_t nagimax = 0; |
| 136 | xfs_rfsblock_t nb, nb_mod; |
| 137 | xfs_rfsblock_t new; |
| 138 | xfs_rfsblock_t nfree; |
| 139 | xfs_agnumber_t oagcount; |
| 140 | int pct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | xfs_trans_t *tp; |
| 142 | |
| 143 | nb = in->newblocks; |
| 144 | pct = in->imaxpct; |
| 145 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) |
| 146 | return XFS_ERROR(EINVAL); |
Nathan Scott | 4cc929e | 2007-05-14 18:24:02 +1000 | [diff] [blame] | 147 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
| 148 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | dpct = pct - mp->m_sb.sb_imax_pct; |
| 150 | error = xfs_read_buf(mp, mp->m_ddev_targp, |
| 151 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
| 152 | XFS_FSS_TO_BB(mp, 1), 0, &bp); |
| 153 | if (error) |
| 154 | return error; |
| 155 | ASSERT(bp); |
| 156 | xfs_buf_relse(bp); |
| 157 | |
| 158 | new = nb; /* use new as a temporary here */ |
| 159 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); |
| 160 | nagcount = new + (nb_mod != 0); |
| 161 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { |
| 162 | nagcount--; |
| 163 | nb = nagcount * mp->m_sb.sb_agblocks; |
| 164 | if (nb < mp->m_sb.sb_dblocks) |
| 165 | return XFS_ERROR(EINVAL); |
| 166 | } |
| 167 | new = nb - mp->m_sb.sb_dblocks; |
| 168 | oagcount = mp->m_sb.sb_agcount; |
| 169 | if (nagcount > oagcount) { |
David Chinner | 2a82b8b | 2007-07-11 11:09:12 +1000 | [diff] [blame] | 170 | xfs_filestream_flush(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | down_write(&mp->m_peraglock); |
| 172 | mp->m_perag = kmem_realloc(mp->m_perag, |
| 173 | sizeof(xfs_perag_t) * nagcount, |
| 174 | sizeof(xfs_perag_t) * oagcount, |
| 175 | KM_SLEEP); |
| 176 | memset(&mp->m_perag[oagcount], 0, |
| 177 | (nagcount - oagcount) * sizeof(xfs_perag_t)); |
| 178 | mp->m_flags |= XFS_MOUNT_32BITINODES; |
Christoph Hellwig | b267ce9 | 2007-08-30 17:21:30 +1000 | [diff] [blame] | 179 | nagimax = xfs_initialize_perag(mp, nagcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | up_write(&mp->m_peraglock); |
| 181 | } |
| 182 | tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); |
David Chinner | 84e1e99 | 2007-06-18 16:50:27 +1000 | [diff] [blame] | 183 | tp->t_flags |= XFS_TRANS_RESERVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp), |
| 185 | XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) { |
| 186 | xfs_trans_cancel(tp, 0); |
| 187 | return error; |
| 188 | } |
| 189 | |
| 190 | nfree = 0; |
| 191 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { |
| 192 | /* |
| 193 | * AG freelist header block |
| 194 | */ |
| 195 | bp = xfs_buf_get(mp->m_ddev_targp, |
| 196 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), |
| 197 | XFS_FSS_TO_BB(mp, 1), 0); |
| 198 | agf = XFS_BUF_TO_AGF(bp); |
| 199 | memset(agf, 0, mp->m_sb.sb_sectsize); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 200 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
| 201 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); |
| 202 | agf->agf_seqno = cpu_to_be32(agno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | if (agno == nagcount - 1) |
| 204 | agsize = |
| 205 | nb - |
| 206 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); |
| 207 | else |
| 208 | agsize = mp->m_sb.sb_agblocks; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 209 | agf->agf_length = cpu_to_be32(agsize); |
| 210 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); |
| 211 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); |
| 212 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); |
| 213 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | agf->agf_flfirst = 0; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 215 | agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | agf->agf_flcount = 0; |
| 217 | tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 218 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
| 219 | agf->agf_longest = cpu_to_be32(tmpsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | error = xfs_bwrite(mp, bp); |
| 221 | if (error) { |
| 222 | goto error0; |
| 223 | } |
| 224 | /* |
| 225 | * AG inode header block |
| 226 | */ |
| 227 | bp = xfs_buf_get(mp->m_ddev_targp, |
| 228 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), |
| 229 | XFS_FSS_TO_BB(mp, 1), 0); |
| 230 | agi = XFS_BUF_TO_AGI(bp); |
| 231 | memset(agi, 0, mp->m_sb.sb_sectsize); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 232 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
| 233 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); |
| 234 | agi->agi_seqno = cpu_to_be32(agno); |
| 235 | agi->agi_length = cpu_to_be32(agsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | agi->agi_count = 0; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 237 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
| 238 | agi->agi_level = cpu_to_be32(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | agi->agi_freecount = 0; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 240 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
| 241 | agi->agi_dirino = cpu_to_be32(NULLAGINO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 243 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | error = xfs_bwrite(mp, bp); |
| 245 | if (error) { |
| 246 | goto error0; |
| 247 | } |
| 248 | /* |
| 249 | * BNO btree root block |
| 250 | */ |
| 251 | bp = xfs_buf_get(mp->m_ddev_targp, |
| 252 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), |
| 253 | BTOBB(mp->m_sb.sb_blocksize), 0); |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 254 | block = XFS_BUF_TO_BLOCK(bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | memset(block, 0, mp->m_sb.sb_blocksize); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 256 | block->bb_magic = cpu_to_be32(XFS_ABTB_MAGIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | block->bb_level = 0; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 258 | block->bb_numrecs = cpu_to_be16(1); |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 259 | block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK); |
| 260 | block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK); |
Christoph Hellwig | 136341b | 2008-10-30 17:11:40 +1100 | [diff] [blame] | 261 | arec = XFS_ALLOC_REC_ADDR(mp, block, 1); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 262 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
| 263 | arec->ar_blockcount = cpu_to_be32( |
| 264 | agsize - be32_to_cpu(arec->ar_startblock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | error = xfs_bwrite(mp, bp); |
| 266 | if (error) { |
| 267 | goto error0; |
| 268 | } |
| 269 | /* |
| 270 | * CNT btree root block |
| 271 | */ |
| 272 | bp = xfs_buf_get(mp->m_ddev_targp, |
| 273 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), |
| 274 | BTOBB(mp->m_sb.sb_blocksize), 0); |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 275 | block = XFS_BUF_TO_BLOCK(bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | memset(block, 0, mp->m_sb.sb_blocksize); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 277 | block->bb_magic = cpu_to_be32(XFS_ABTC_MAGIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | block->bb_level = 0; |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 279 | block->bb_numrecs = cpu_to_be16(1); |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 280 | block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK); |
| 281 | block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK); |
Christoph Hellwig | 136341b | 2008-10-30 17:11:40 +1100 | [diff] [blame] | 282 | arec = XFS_ALLOC_REC_ADDR(mp, block, 1); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 283 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
| 284 | arec->ar_blockcount = cpu_to_be32( |
| 285 | agsize - be32_to_cpu(arec->ar_startblock)); |
| 286 | nfree += be32_to_cpu(arec->ar_blockcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | error = xfs_bwrite(mp, bp); |
| 288 | if (error) { |
| 289 | goto error0; |
| 290 | } |
| 291 | /* |
| 292 | * INO btree root block |
| 293 | */ |
| 294 | bp = xfs_buf_get(mp->m_ddev_targp, |
| 295 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), |
| 296 | BTOBB(mp->m_sb.sb_blocksize), 0); |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 297 | block = XFS_BUF_TO_BLOCK(bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | memset(block, 0, mp->m_sb.sb_blocksize); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 299 | block->bb_magic = cpu_to_be32(XFS_IBT_MAGIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | block->bb_level = 0; |
| 301 | block->bb_numrecs = 0; |
Christoph Hellwig | 7cc95a8 | 2008-10-30 17:14:34 +1100 | [diff] [blame] | 302 | block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK); |
| 303 | block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | error = xfs_bwrite(mp, bp); |
| 305 | if (error) { |
| 306 | goto error0; |
| 307 | } |
| 308 | } |
| 309 | xfs_trans_agblocks_delta(tp, nfree); |
| 310 | /* |
| 311 | * There are new blocks in the old last a.g. |
| 312 | */ |
| 313 | if (new) { |
| 314 | /* |
| 315 | * Change the agi length. |
| 316 | */ |
| 317 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); |
| 318 | if (error) { |
| 319 | goto error0; |
| 320 | } |
| 321 | ASSERT(bp); |
| 322 | agi = XFS_BUF_TO_AGI(bp); |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 323 | be32_add_cpu(&agi->agi_length, new); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | ASSERT(nagcount == oagcount || |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 325 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
| 327 | /* |
| 328 | * Change agf length. |
| 329 | */ |
| 330 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); |
| 331 | if (error) { |
| 332 | goto error0; |
| 333 | } |
| 334 | ASSERT(bp); |
| 335 | agf = XFS_BUF_TO_AGF(bp); |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 336 | be32_add_cpu(&agf->agf_length, new); |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 337 | ASSERT(be32_to_cpu(agf->agf_length) == |
| 338 | be32_to_cpu(agi->agi_length)); |
Tim Shimmin | 0164af5 | 2007-06-18 16:50:08 +1000 | [diff] [blame] | 339 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | /* |
| 341 | * Free the new space. |
| 342 | */ |
| 343 | error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno, |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 344 | be32_to_cpu(agf->agf_length) - new), new); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | if (error) { |
| 346 | goto error0; |
| 347 | } |
| 348 | } |
| 349 | if (nagcount > oagcount) |
| 350 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); |
| 351 | if (nb > mp->m_sb.sb_dblocks) |
| 352 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, |
| 353 | nb - mp->m_sb.sb_dblocks); |
| 354 | if (nfree) |
| 355 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); |
| 356 | if (dpct) |
| 357 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); |
Eric Sandeen | 1c72bf9 | 2007-05-08 13:48:42 +1000 | [diff] [blame] | 358 | error = xfs_trans_commit(tp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | if (error) { |
| 360 | return error; |
| 361 | } |
| 362 | /* New allocation groups fully initialized, so update mount struct */ |
| 363 | if (nagimax) |
| 364 | mp->m_maxagi = nagimax; |
| 365 | if (mp->m_sb.sb_imax_pct) { |
| 366 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; |
| 367 | do_div(icount, 100); |
| 368 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; |
| 369 | } else |
| 370 | mp->m_maxicount = 0; |
| 371 | for (agno = 1; agno < nagcount; agno++) { |
| 372 | error = xfs_read_buf(mp, mp->m_ddev_targp, |
| 373 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
| 374 | XFS_FSS_TO_BB(mp, 1), 0, &bp); |
| 375 | if (error) { |
| 376 | xfs_fs_cmn_err(CE_WARN, mp, |
| 377 | "error %d reading secondary superblock for ag %d", |
| 378 | error, agno); |
| 379 | break; |
| 380 | } |
Christoph Hellwig | 2bdf7cd | 2007-08-28 13:58:06 +1000 | [diff] [blame] | 381 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | /* |
| 383 | * If we get an error writing out the alternate superblocks, |
| 384 | * just issue a warning and continue. The real work is |
| 385 | * already done and committed. |
| 386 | */ |
| 387 | if (!(error = xfs_bwrite(mp, bp))) { |
| 388 | continue; |
| 389 | } else { |
| 390 | xfs_fs_cmn_err(CE_WARN, mp, |
| 391 | "write error %d updating secondary superblock for ag %d", |
| 392 | error, agno); |
| 393 | break; /* no point in continuing */ |
| 394 | } |
| 395 | } |
| 396 | return 0; |
| 397 | |
| 398 | error0: |
| 399 | xfs_trans_cancel(tp, XFS_TRANS_ABORT); |
| 400 | return error; |
| 401 | } |
| 402 | |
| 403 | static int |
| 404 | xfs_growfs_log_private( |
| 405 | xfs_mount_t *mp, /* mount point for filesystem */ |
| 406 | xfs_growfs_log_t *in) /* growfs log input struct */ |
| 407 | { |
| 408 | xfs_extlen_t nb; |
| 409 | |
| 410 | nb = in->newblocks; |
| 411 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) |
| 412 | return XFS_ERROR(EINVAL); |
| 413 | if (nb == mp->m_sb.sb_logblocks && |
| 414 | in->isint == (mp->m_sb.sb_logstart != 0)) |
| 415 | return XFS_ERROR(EINVAL); |
| 416 | /* |
| 417 | * Moving the log is hard, need new interfaces to sync |
| 418 | * the log first, hold off all activity while moving it. |
| 419 | * Can have shorter or longer log in the same space, |
| 420 | * or transform internal to external log or vice versa. |
| 421 | */ |
| 422 | return XFS_ERROR(ENOSYS); |
| 423 | } |
| 424 | |
| 425 | /* |
| 426 | * protected versions of growfs function acquire and release locks on the mount |
| 427 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, |
| 428 | * XFS_IOC_FSGROWFSRT |
| 429 | */ |
| 430 | |
| 431 | |
| 432 | int |
| 433 | xfs_growfs_data( |
| 434 | xfs_mount_t *mp, |
| 435 | xfs_growfs_data_t *in) |
| 436 | { |
| 437 | int error; |
Christoph Hellwig | cc92e7a | 2007-08-30 17:21:54 +1000 | [diff] [blame] | 438 | if (!mutex_trylock(&mp->m_growlock)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | return XFS_ERROR(EWOULDBLOCK); |
| 440 | error = xfs_growfs_data_private(mp, in); |
Christoph Hellwig | cc92e7a | 2007-08-30 17:21:54 +1000 | [diff] [blame] | 441 | mutex_unlock(&mp->m_growlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | return error; |
| 443 | } |
| 444 | |
| 445 | int |
| 446 | xfs_growfs_log( |
| 447 | xfs_mount_t *mp, |
| 448 | xfs_growfs_log_t *in) |
| 449 | { |
| 450 | int error; |
Christoph Hellwig | cc92e7a | 2007-08-30 17:21:54 +1000 | [diff] [blame] | 451 | if (!mutex_trylock(&mp->m_growlock)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | return XFS_ERROR(EWOULDBLOCK); |
| 453 | error = xfs_growfs_log_private(mp, in); |
Christoph Hellwig | cc92e7a | 2007-08-30 17:21:54 +1000 | [diff] [blame] | 454 | mutex_unlock(&mp->m_growlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | return error; |
| 456 | } |
| 457 | |
| 458 | /* |
| 459 | * exported through ioctl XFS_IOC_FSCOUNTS |
| 460 | */ |
| 461 | |
| 462 | int |
| 463 | xfs_fs_counts( |
| 464 | xfs_mount_t *mp, |
| 465 | xfs_fsop_counts_t *cnt) |
| 466 | { |
Christoph Hellwig | d4d90b5 | 2008-04-22 17:34:37 +1000 | [diff] [blame] | 467 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 468 | spin_lock(&mp->m_sb_lock); |
David Chinner | 4be536d | 2006-09-07 14:26:50 +1000 | [diff] [blame] | 469 | cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | cnt->freertx = mp->m_sb.sb_frextents; |
| 471 | cnt->freeino = mp->m_sb.sb_ifree; |
| 472 | cnt->allocino = mp->m_sb.sb_icount; |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 473 | spin_unlock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | return 0; |
| 475 | } |
| 476 | |
| 477 | /* |
| 478 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS |
| 479 | * |
| 480 | * xfs_reserve_blocks is called to set m_resblks |
| 481 | * in the in-core mount table. The number of unused reserved blocks |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 482 | * is kept in m_resblks_avail. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | * |
| 484 | * Reserve the requested number of blocks if available. Otherwise return |
| 485 | * as many as possible to satisfy the request. The actual number |
| 486 | * reserved are returned in outval |
| 487 | * |
| 488 | * A null inval pointer indicates that only the current reserved blocks |
| 489 | * available should be returned no settings are changed. |
| 490 | */ |
| 491 | |
| 492 | int |
| 493 | xfs_reserve_blocks( |
| 494 | xfs_mount_t *mp, |
| 495 | __uint64_t *inval, |
| 496 | xfs_fsop_resblks_t *outval) |
| 497 | { |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 498 | __int64_t lcounter, delta, fdblks_delta; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | __uint64_t request; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
| 501 | /* If inval is null, report current values and return */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | if (inval == (__uint64_t *)NULL) { |
David Chinner | 84e1e99 | 2007-06-18 16:50:27 +1000 | [diff] [blame] | 503 | if (!outval) |
| 504 | return EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | outval->resblks = mp->m_resblks; |
| 506 | outval->resblks_avail = mp->m_resblks_avail; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 507 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | request = *inval; |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 511 | |
| 512 | /* |
| 513 | * With per-cpu counters, this becomes an interesting |
| 514 | * problem. we needto work out if we are freeing or allocation |
| 515 | * blocks first, then we can do the modification as necessary. |
| 516 | * |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 517 | * We do this under the m_sb_lock so that if we are near |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 518 | * ENOSPC, we will hold out any changes while we work out |
| 519 | * what to do. This means that the amount of free space can |
| 520 | * change while we do this, so we need to retry if we end up |
| 521 | * trying to reserve more space than is available. |
| 522 | * |
| 523 | * We also use the xfs_mod_incore_sb() interface so that we |
| 524 | * don't have to care about whether per cpu counter are |
| 525 | * enabled, disabled or even compiled in.... |
| 526 | */ |
| 527 | retry: |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 528 | spin_lock(&mp->m_sb_lock); |
Christoph Hellwig | d4d90b5 | 2008-04-22 17:34:37 +1000 | [diff] [blame] | 529 | xfs_icsb_sync_counters_locked(mp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
| 531 | /* |
| 532 | * If our previous reservation was larger than the current value, |
| 533 | * then move any unused blocks back to the free pool. |
| 534 | */ |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 535 | fdblks_delta = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | if (mp->m_resblks > request) { |
| 537 | lcounter = mp->m_resblks_avail - request; |
| 538 | if (lcounter > 0) { /* release unused blocks */ |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 539 | fdblks_delta = lcounter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | mp->m_resblks_avail -= lcounter; |
| 541 | } |
| 542 | mp->m_resblks = request; |
| 543 | } else { |
David Chinner | 4be536d | 2006-09-07 14:26:50 +1000 | [diff] [blame] | 544 | __int64_t free; |
| 545 | |
| 546 | free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 547 | if (!free) |
| 548 | goto out; /* ENOSPC and fdblks_delta = 0 */ |
| 549 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | delta = request - mp->m_resblks; |
David Chinner | 4be536d | 2006-09-07 14:26:50 +1000 | [diff] [blame] | 551 | lcounter = free - delta; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | if (lcounter < 0) { |
| 553 | /* We can't satisfy the request, just get what we can */ |
David Chinner | 4be536d | 2006-09-07 14:26:50 +1000 | [diff] [blame] | 554 | mp->m_resblks += free; |
| 555 | mp->m_resblks_avail += free; |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 556 | fdblks_delta = -free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | } else { |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 558 | fdblks_delta = -delta; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | mp->m_resblks = request; |
| 560 | mp->m_resblks_avail += delta; |
| 561 | } |
| 562 | } |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 563 | out: |
David Chinner | 84e1e99 | 2007-06-18 16:50:27 +1000 | [diff] [blame] | 564 | if (outval) { |
| 565 | outval->resblks = mp->m_resblks; |
| 566 | outval->resblks_avail = mp->m_resblks_avail; |
| 567 | } |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 568 | spin_unlock(&mp->m_sb_lock); |
David Chinner | dbcabad | 2007-02-10 18:36:17 +1100 | [diff] [blame] | 569 | |
| 570 | if (fdblks_delta) { |
| 571 | /* |
| 572 | * If we are putting blocks back here, m_resblks_avail is |
| 573 | * already at it's max so this will put it in the free pool. |
| 574 | * |
| 575 | * If we need space, we'll either succeed in getting it |
| 576 | * from the free block count or we'll get an enospc. If |
| 577 | * we get a ENOSPC, it means things changed while we were |
| 578 | * calculating fdblks_delta and so we should try again to |
| 579 | * see if there is anything left to reserve. |
| 580 | * |
| 581 | * Don't set the reserved flag here - we don't want to reserve |
| 582 | * the extra reserve blocks from the reserve..... |
| 583 | */ |
| 584 | int error; |
| 585 | error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, fdblks_delta, 0); |
| 586 | if (error == ENOSPC) |
| 587 | goto retry; |
| 588 | } |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 589 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | } |
| 591 | |
Christoph Hellwig | e13a73f | 2006-01-11 15:30:08 +1100 | [diff] [blame] | 592 | void |
Nathan Scott | 421ad13 | 2006-06-09 17:12:46 +1000 | [diff] [blame] | 593 | xfs_fs_log_dummy( |
| 594 | xfs_mount_t *mp) |
Christoph Hellwig | e13a73f | 2006-01-11 15:30:08 +1100 | [diff] [blame] | 595 | { |
Nathan Scott | 421ad13 | 2006-06-09 17:12:46 +1000 | [diff] [blame] | 596 | xfs_trans_t *tp; |
| 597 | xfs_inode_t *ip; |
Christoph Hellwig | e13a73f | 2006-01-11 15:30:08 +1100 | [diff] [blame] | 598 | |
| 599 | tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1); |
Christoph Hellwig | e13a73f | 2006-01-11 15:30:08 +1100 | [diff] [blame] | 600 | if (xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0)) { |
| 601 | xfs_trans_cancel(tp, 0); |
| 602 | return; |
| 603 | } |
| 604 | |
| 605 | ip = mp->m_rootip; |
| 606 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 607 | |
| 608 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); |
| 609 | xfs_trans_ihold(tp, ip); |
| 610 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 611 | xfs_trans_set_sync(tp); |
Eric Sandeen | 1c72bf9 | 2007-05-08 13:48:42 +1000 | [diff] [blame] | 612 | xfs_trans_commit(tp, 0); |
Christoph Hellwig | e13a73f | 2006-01-11 15:30:08 +1100 | [diff] [blame] | 613 | |
| 614 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 615 | } |
| 616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | int |
| 618 | xfs_fs_goingdown( |
| 619 | xfs_mount_t *mp, |
| 620 | __uint32_t inflags) |
| 621 | { |
| 622 | switch (inflags) { |
| 623 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { |
Christoph Hellwig | b267ce9 | 2007-08-30 17:21:30 +1000 | [diff] [blame] | 624 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
Christoph Hellwig | f33c679 | 2005-11-25 16:41:47 +1100 | [diff] [blame] | 626 | if (sb && !IS_ERR(sb)) { |
Nathan Scott | 7d04a33 | 2006-06-09 14:58:38 +1000 | [diff] [blame] | 627 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | thaw_bdev(sb->s_bdev, sb); |
| 629 | } |
Barry Naujok | 189f4bf | 2008-05-21 16:58:55 +1000 | [diff] [blame] | 630 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | break; |
| 632 | } |
| 633 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: |
Nathan Scott | 7d04a33 | 2006-06-09 14:58:38 +1000 | [diff] [blame] | 634 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | break; |
| 636 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: |
Nathan Scott | 7d04a33 | 2006-06-09 14:58:38 +1000 | [diff] [blame] | 637 | xfs_force_shutdown(mp, |
| 638 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | break; |
| 640 | default: |
| 641 | return XFS_ERROR(EINVAL); |
| 642 | } |
| 643 | |
| 644 | return 0; |
| 645 | } |