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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_fs.h" |
70a9883c | 20 | #include "xfs_shared.h" |
239880ef | 21 | #include "xfs_format.h" |
a4fbe6ab | 22 | #include "xfs_log_format.h" |
239880ef | 23 | #include "xfs_trans_resv.h" |
1da177e4 | 24 | #include "xfs_sb.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
3ab78df2 | 26 | #include "xfs_defer.h" |
8f66193c DC |
27 | #include "xfs_da_format.h" |
28 | #include "xfs_da_btree.h" | |
a844f451 | 29 | #include "xfs_inode.h" |
239880ef | 30 | #include "xfs_trans.h" |
a844f451 | 31 | #include "xfs_inode_item.h" |
1da177e4 | 32 | #include "xfs_error.h" |
a4fbe6ab DC |
33 | #include "xfs_btree.h" |
34 | #include "xfs_alloc_btree.h" | |
1da177e4 | 35 | #include "xfs_alloc.h" |
e70d829f | 36 | #include "xfs_rmap_btree.h" |
1da177e4 LT |
37 | #include "xfs_ialloc.h" |
38 | #include "xfs_fsops.h" | |
39 | #include "xfs_itable.h" | |
1da177e4 LT |
40 | #include "xfs_trans_space.h" |
41 | #include "xfs_rtalloc.h" | |
0b1b213f | 42 | #include "xfs_trace.h" |
239880ef | 43 | #include "xfs_log.h" |
a4fbe6ab | 44 | #include "xfs_filestream.h" |
340785cc | 45 | #include "xfs_rmap.h" |
84d69619 | 46 | #include "xfs_ag_resv.h" |
1da177e4 LT |
47 | |
48 | /* | |
49 | * File system operations | |
50 | */ | |
51 | ||
52 | int | |
53 | xfs_fs_geometry( | |
54 | xfs_mount_t *mp, | |
55 | xfs_fsop_geom_t *geo, | |
56 | int new_version) | |
57 | { | |
c4d0c3b0 DR |
58 | |
59 | memset(geo, 0, sizeof(*geo)); | |
60 | ||
1da177e4 LT |
61 | geo->blocksize = mp->m_sb.sb_blocksize; |
62 | geo->rtextsize = mp->m_sb.sb_rextsize; | |
63 | geo->agblocks = mp->m_sb.sb_agblocks; | |
64 | geo->agcount = mp->m_sb.sb_agcount; | |
65 | geo->logblocks = mp->m_sb.sb_logblocks; | |
66 | geo->sectsize = mp->m_sb.sb_sectsize; | |
67 | geo->inodesize = mp->m_sb.sb_inodesize; | |
68 | geo->imaxpct = mp->m_sb.sb_imax_pct; | |
69 | geo->datablocks = mp->m_sb.sb_dblocks; | |
70 | geo->rtblocks = mp->m_sb.sb_rblocks; | |
71 | geo->rtextents = mp->m_sb.sb_rextents; | |
72 | geo->logstart = mp->m_sb.sb_logstart; | |
73 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); | |
74 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); | |
75 | if (new_version >= 2) { | |
76 | geo->sunit = mp->m_sb.sb_unit; | |
77 | geo->swidth = mp->m_sb.sb_width; | |
78 | } | |
79 | if (new_version >= 3) { | |
80 | geo->version = XFS_FSOP_GEOM_VERSION; | |
263997a6 | 81 | geo->flags = XFS_FSOP_GEOM_FLAGS_NLINK | |
5d074a4f | 82 | XFS_FSOP_GEOM_FLAGS_DIRV2 | |
62118709 | 83 | (xfs_sb_version_hasattr(&mp->m_sb) ? |
1da177e4 | 84 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | |
62118709 | 85 | (xfs_sb_version_hasquota(&mp->m_sb) ? |
1da177e4 | 86 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | |
62118709 | 87 | (xfs_sb_version_hasalign(&mp->m_sb) ? |
1da177e4 | 88 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | |
62118709 | 89 | (xfs_sb_version_hasdalign(&mp->m_sb) ? |
1da177e4 | 90 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | |
62118709 | 91 | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? |
1da177e4 | 92 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | |
62118709 | 93 | (xfs_sb_version_hassector(&mp->m_sb) ? |
d8cc890d | 94 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
189f4bf2 BN |
95 | (xfs_sb_version_hasasciici(&mp->m_sb) ? |
96 | XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) | | |
92821e2b DC |
97 | (xfs_sb_version_haslazysbcount(&mp->m_sb) ? |
98 | XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) | | |
62118709 | 99 | (xfs_sb_version_hasattr2(&mp->m_sb) ? |
69a58a43 ES |
100 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) | |
101 | (xfs_sb_version_hasprojid32bit(&mp->m_sb) ? | |
74137fff DC |
102 | XFS_FSOP_GEOM_FLAGS_PROJID32 : 0) | |
103 | (xfs_sb_version_hascrc(&mp->m_sb) ? | |
2900a579 MT |
104 | XFS_FSOP_GEOM_FLAGS_V5SB : 0) | |
105 | (xfs_sb_version_hasftype(&mp->m_sb) ? | |
0c153c1e BF |
106 | XFS_FSOP_GEOM_FLAGS_FTYPE : 0) | |
107 | (xfs_sb_version_hasfinobt(&mp->m_sb) ? | |
502a4e72 BF |
108 | XFS_FSOP_GEOM_FLAGS_FINOBT : 0) | |
109 | (xfs_sb_version_hassparseinodes(&mp->m_sb) ? | |
5d650e90 DW |
110 | XFS_FSOP_GEOM_FLAGS_SPINODES : 0) | |
111 | (xfs_sb_version_hasrmapbt(&mp->m_sb) ? | |
f0ec1b8e DW |
112 | XFS_FSOP_GEOM_FLAGS_RMAPBT : 0) | |
113 | (xfs_sb_version_hasreflink(&mp->m_sb) ? | |
114 | XFS_FSOP_GEOM_FLAGS_REFLINK : 0); | |
62118709 | 115 | geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? |
1da177e4 LT |
116 | mp->m_sb.sb_logsectsize : BBSIZE; |
117 | geo->rtsectsize = mp->m_sb.sb_blocksize; | |
8f66193c | 118 | geo->dirblocksize = mp->m_dir_geo->blksize; |
1da177e4 LT |
119 | } |
120 | if (new_version >= 4) { | |
121 | geo->flags |= | |
62118709 | 122 | (xfs_sb_version_haslogv2(&mp->m_sb) ? |
1da177e4 LT |
123 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); |
124 | geo->logsunit = mp->m_sb.sb_logsunit; | |
125 | } | |
126 | return 0; | |
127 | } | |
128 | ||
fd23683c DC |
129 | static struct xfs_buf * |
130 | xfs_growfs_get_hdr_buf( | |
131 | struct xfs_mount *mp, | |
132 | xfs_daddr_t blkno, | |
133 | size_t numblks, | |
1813dd64 DC |
134 | int flags, |
135 | const struct xfs_buf_ops *ops) | |
fd23683c DC |
136 | { |
137 | struct xfs_buf *bp; | |
138 | ||
139 | bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); | |
140 | if (!bp) | |
141 | return NULL; | |
142 | ||
143 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); | |
144 | bp->b_bn = blkno; | |
145 | bp->b_maps[0].bm_bn = blkno; | |
1813dd64 | 146 | bp->b_ops = ops; |
fd23683c DC |
147 | |
148 | return bp; | |
149 | } | |
150 | ||
1da177e4 LT |
151 | static int |
152 | xfs_growfs_data_private( | |
153 | xfs_mount_t *mp, /* mount point for filesystem */ | |
154 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
155 | { | |
156 | xfs_agf_t *agf; | |
de497688 | 157 | struct xfs_agfl *agfl; |
1da177e4 LT |
158 | xfs_agi_t *agi; |
159 | xfs_agnumber_t agno; | |
160 | xfs_extlen_t agsize; | |
161 | xfs_extlen_t tmpsize; | |
162 | xfs_alloc_rec_t *arec; | |
1da177e4 LT |
163 | xfs_buf_t *bp; |
164 | int bucket; | |
165 | int dpct; | |
59e5a0e8 | 166 | int error, saved_error = 0; |
1da177e4 LT |
167 | xfs_agnumber_t nagcount; |
168 | xfs_agnumber_t nagimax = 0; | |
169 | xfs_rfsblock_t nb, nb_mod; | |
170 | xfs_rfsblock_t new; | |
171 | xfs_rfsblock_t nfree; | |
172 | xfs_agnumber_t oagcount; | |
173 | int pct; | |
1da177e4 LT |
174 | xfs_trans_t *tp; |
175 | ||
176 | nb = in->newblocks; | |
177 | pct = in->imaxpct; | |
178 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
2451337d | 179 | return -EINVAL; |
4cc929ee NS |
180 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
181 | return error; | |
1da177e4 | 182 | dpct = pct - mp->m_sb.sb_imax_pct; |
ba372674 | 183 | error = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 184 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
ba372674 DC |
185 | XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL); |
186 | if (error) | |
eab4e633 | 187 | return error; |
1da177e4 LT |
188 | xfs_buf_relse(bp); |
189 | ||
190 | new = nb; /* use new as a temporary here */ | |
191 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
192 | nagcount = new + (nb_mod != 0); | |
193 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
194 | nagcount--; | |
e6da7c9f | 195 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 | 196 | if (nb < mp->m_sb.sb_dblocks) |
2451337d | 197 | return -EINVAL; |
1da177e4 LT |
198 | } |
199 | new = nb - mp->m_sb.sb_dblocks; | |
200 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 201 | |
1c1c6ebc DC |
202 | /* allocate the new per-ag structures */ |
203 | if (nagcount > oagcount) { | |
204 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
205 | if (error) | |
206 | return error; | |
1da177e4 | 207 | } |
1c1c6ebc | 208 | |
253f4911 CH |
209 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_growdata, |
210 | XFS_GROWFS_SPACE_RES(mp), 0, XFS_TRANS_RESERVE, &tp); | |
211 | if (error) | |
1da177e4 | 212 | return error; |
1da177e4 | 213 | |
1c1c6ebc DC |
214 | /* |
215 | * Write new AG headers to disk. Non-transactional, but written | |
216 | * synchronously so they are completed prior to the growfs transaction | |
217 | * being logged. | |
218 | */ | |
1da177e4 LT |
219 | nfree = 0; |
220 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
f94c4457 DC |
221 | __be32 *agfl_bno; |
222 | ||
1da177e4 | 223 | /* |
de497688 | 224 | * AG freespace header block |
1da177e4 | 225 | */ |
fd23683c DC |
226 | bp = xfs_growfs_get_hdr_buf(mp, |
227 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
1813dd64 DC |
228 | XFS_FSS_TO_BB(mp, 1), 0, |
229 | &xfs_agf_buf_ops); | |
b522950f | 230 | if (!bp) { |
2451337d | 231 | error = -ENOMEM; |
b522950f CS |
232 | goto error0; |
233 | } | |
fd23683c | 234 | |
1da177e4 | 235 | agf = XFS_BUF_TO_AGF(bp); |
16259e7d CH |
236 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
237 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
238 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
239 | if (agno == nagcount - 1) |
240 | agsize = | |
241 | nb - | |
242 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
243 | else | |
244 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
245 | agf->agf_length = cpu_to_be32(agsize); |
246 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
247 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
248 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
249 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
e70d829f DW |
250 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { |
251 | agf->agf_roots[XFS_BTNUM_RMAPi] = | |
252 | cpu_to_be32(XFS_RMAP_BLOCK(mp)); | |
253 | agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1); | |
f32866fd | 254 | agf->agf_rmap_blocks = cpu_to_be32(1); |
e70d829f DW |
255 | } |
256 | ||
ad747e3b DC |
257 | agf->agf_flfirst = cpu_to_be32(1); |
258 | agf->agf_fllast = 0; | |
1da177e4 | 259 | agf->agf_flcount = 0; |
8018026e | 260 | tmpsize = agsize - mp->m_ag_prealloc_blocks; |
16259e7d CH |
261 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
262 | agf->agf_longest = cpu_to_be32(tmpsize); | |
4e0e6040 | 263 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
ac383de2 | 264 | uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid); |
ac4fef69 DW |
265 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { |
266 | agf->agf_refcount_root = cpu_to_be32( | |
267 | xfs_refc_block(mp)); | |
268 | agf->agf_refcount_level = cpu_to_be32(1); | |
269 | agf->agf_refcount_blocks = cpu_to_be32(1); | |
270 | } | |
4e0e6040 | 271 | |
c2b006c1 CH |
272 | error = xfs_bwrite(bp); |
273 | xfs_buf_relse(bp); | |
274 | if (error) | |
1da177e4 | 275 | goto error0; |
c2b006c1 | 276 | |
de497688 DC |
277 | /* |
278 | * AG freelist header block | |
279 | */ | |
280 | bp = xfs_growfs_get_hdr_buf(mp, | |
281 | XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), | |
1813dd64 DC |
282 | XFS_FSS_TO_BB(mp, 1), 0, |
283 | &xfs_agfl_buf_ops); | |
de497688 | 284 | if (!bp) { |
2451337d | 285 | error = -ENOMEM; |
de497688 DC |
286 | goto error0; |
287 | } | |
288 | ||
289 | agfl = XFS_BUF_TO_AGFL(bp); | |
77c95bba CH |
290 | if (xfs_sb_version_hascrc(&mp->m_sb)) { |
291 | agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); | |
292 | agfl->agfl_seqno = cpu_to_be32(agno); | |
ac383de2 | 293 | uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid); |
77c95bba | 294 | } |
f94c4457 DC |
295 | |
296 | agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); | |
de497688 | 297 | for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++) |
f94c4457 | 298 | agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); |
de497688 DC |
299 | |
300 | error = xfs_bwrite(bp); | |
301 | xfs_buf_relse(bp); | |
302 | if (error) | |
303 | goto error0; | |
304 | ||
1da177e4 LT |
305 | /* |
306 | * AG inode header block | |
307 | */ | |
fd23683c DC |
308 | bp = xfs_growfs_get_hdr_buf(mp, |
309 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
1813dd64 DC |
310 | XFS_FSS_TO_BB(mp, 1), 0, |
311 | &xfs_agi_buf_ops); | |
b522950f | 312 | if (!bp) { |
2451337d | 313 | error = -ENOMEM; |
b522950f CS |
314 | goto error0; |
315 | } | |
fd23683c | 316 | |
1da177e4 | 317 | agi = XFS_BUF_TO_AGI(bp); |
16259e7d CH |
318 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
319 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
320 | agi->agi_seqno = cpu_to_be32(agno); | |
321 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 322 | agi->agi_count = 0; |
16259e7d CH |
323 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
324 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 325 | agi->agi_freecount = 0; |
16259e7d CH |
326 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
327 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
983d09ff | 328 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
ac383de2 | 329 | uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid); |
a3fa516d BF |
330 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { |
331 | agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp)); | |
332 | agi->agi_free_level = cpu_to_be32(1); | |
333 | } | |
1da177e4 | 334 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 335 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
983d09ff | 336 | |
c2b006c1 CH |
337 | error = xfs_bwrite(bp); |
338 | xfs_buf_relse(bp); | |
339 | if (error) | |
1da177e4 | 340 | goto error0; |
c2b006c1 | 341 | |
1da177e4 LT |
342 | /* |
343 | * BNO btree root block | |
344 | */ | |
fd23683c DC |
345 | bp = xfs_growfs_get_hdr_buf(mp, |
346 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
1813dd64 DC |
347 | BTOBB(mp->m_sb.sb_blocksize), 0, |
348 | &xfs_allocbt_buf_ops); | |
fd23683c | 349 | |
b522950f | 350 | if (!bp) { |
2451337d | 351 | error = -ENOMEM; |
b522950f CS |
352 | goto error0; |
353 | } | |
b64f3a39 | 354 | |
ee1a47ab CH |
355 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
356 | xfs_btree_init_block(mp, bp, XFS_ABTB_CRC_MAGIC, 0, 1, | |
357 | agno, XFS_BTREE_CRC_BLOCKS); | |
358 | else | |
359 | xfs_btree_init_block(mp, bp, XFS_ABTB_MAGIC, 0, 1, | |
360 | agno, 0); | |
361 | ||
b64f3a39 | 362 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
8018026e | 363 | arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); |
16259e7d CH |
364 | arec->ar_blockcount = cpu_to_be32( |
365 | agsize - be32_to_cpu(arec->ar_startblock)); | |
b64f3a39 | 366 | |
c2b006c1 CH |
367 | error = xfs_bwrite(bp); |
368 | xfs_buf_relse(bp); | |
369 | if (error) | |
1da177e4 | 370 | goto error0; |
c2b006c1 | 371 | |
1da177e4 LT |
372 | /* |
373 | * CNT btree root block | |
374 | */ | |
fd23683c DC |
375 | bp = xfs_growfs_get_hdr_buf(mp, |
376 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
1813dd64 DC |
377 | BTOBB(mp->m_sb.sb_blocksize), 0, |
378 | &xfs_allocbt_buf_ops); | |
b522950f | 379 | if (!bp) { |
2451337d | 380 | error = -ENOMEM; |
b522950f CS |
381 | goto error0; |
382 | } | |
b64f3a39 | 383 | |
ee1a47ab CH |
384 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
385 | xfs_btree_init_block(mp, bp, XFS_ABTC_CRC_MAGIC, 0, 1, | |
386 | agno, XFS_BTREE_CRC_BLOCKS); | |
387 | else | |
388 | xfs_btree_init_block(mp, bp, XFS_ABTC_MAGIC, 0, 1, | |
389 | agno, 0); | |
390 | ||
b64f3a39 | 391 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
8018026e | 392 | arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); |
16259e7d CH |
393 | arec->ar_blockcount = cpu_to_be32( |
394 | agsize - be32_to_cpu(arec->ar_startblock)); | |
395 | nfree += be32_to_cpu(arec->ar_blockcount); | |
b64f3a39 | 396 | |
c2b006c1 CH |
397 | error = xfs_bwrite(bp); |
398 | xfs_buf_relse(bp); | |
399 | if (error) | |
1da177e4 | 400 | goto error0; |
c2b006c1 | 401 | |
e70d829f DW |
402 | /* RMAP btree root block */ |
403 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { | |
404 | struct xfs_rmap_rec *rrec; | |
405 | struct xfs_btree_block *block; | |
406 | ||
407 | bp = xfs_growfs_get_hdr_buf(mp, | |
408 | XFS_AGB_TO_DADDR(mp, agno, XFS_RMAP_BLOCK(mp)), | |
409 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
410 | &xfs_rmapbt_buf_ops); | |
411 | if (!bp) { | |
412 | error = -ENOMEM; | |
413 | goto error0; | |
414 | } | |
415 | ||
416 | xfs_btree_init_block(mp, bp, XFS_RMAP_CRC_MAGIC, 0, 0, | |
417 | agno, XFS_BTREE_CRC_BLOCKS); | |
418 | block = XFS_BUF_TO_BLOCK(bp); | |
419 | ||
420 | ||
421 | /* | |
422 | * mark the AG header regions as static metadata The BNO | |
423 | * btree block is the first block after the headers, so | |
424 | * it's location defines the size of region the static | |
425 | * metadata consumes. | |
426 | * | |
427 | * Note: unlike mkfs, we never have to account for log | |
428 | * space when growing the data regions | |
429 | */ | |
430 | rrec = XFS_RMAP_REC_ADDR(block, 1); | |
431 | rrec->rm_startblock = 0; | |
432 | rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
433 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS); | |
434 | rrec->rm_offset = 0; | |
435 | be16_add_cpu(&block->bb_numrecs, 1); | |
436 | ||
437 | /* account freespace btree root blocks */ | |
438 | rrec = XFS_RMAP_REC_ADDR(block, 2); | |
439 | rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
440 | rrec->rm_blockcount = cpu_to_be32(2); | |
441 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); | |
442 | rrec->rm_offset = 0; | |
443 | be16_add_cpu(&block->bb_numrecs, 1); | |
444 | ||
445 | /* account inode btree root blocks */ | |
446 | rrec = XFS_RMAP_REC_ADDR(block, 3); | |
447 | rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp)); | |
448 | rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) - | |
449 | XFS_IBT_BLOCK(mp)); | |
450 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT); | |
451 | rrec->rm_offset = 0; | |
452 | be16_add_cpu(&block->bb_numrecs, 1); | |
453 | ||
454 | /* account for rmap btree root */ | |
455 | rrec = XFS_RMAP_REC_ADDR(block, 4); | |
456 | rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp)); | |
457 | rrec->rm_blockcount = cpu_to_be32(1); | |
458 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); | |
459 | rrec->rm_offset = 0; | |
460 | be16_add_cpu(&block->bb_numrecs, 1); | |
461 | ||
ac4fef69 DW |
462 | /* account for refc btree root */ |
463 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { | |
464 | rrec = XFS_RMAP_REC_ADDR(block, 5); | |
465 | rrec->rm_startblock = cpu_to_be32( | |
466 | xfs_refc_block(mp)); | |
467 | rrec->rm_blockcount = cpu_to_be32(1); | |
468 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_REFC); | |
469 | rrec->rm_offset = 0; | |
470 | be16_add_cpu(&block->bb_numrecs, 1); | |
471 | } | |
472 | ||
e70d829f DW |
473 | error = xfs_bwrite(bp); |
474 | xfs_buf_relse(bp); | |
475 | if (error) | |
476 | goto error0; | |
477 | } | |
478 | ||
1da177e4 LT |
479 | /* |
480 | * INO btree root block | |
481 | */ | |
fd23683c DC |
482 | bp = xfs_growfs_get_hdr_buf(mp, |
483 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
1813dd64 DC |
484 | BTOBB(mp->m_sb.sb_blocksize), 0, |
485 | &xfs_inobt_buf_ops); | |
b522950f | 486 | if (!bp) { |
2451337d | 487 | error = -ENOMEM; |
b522950f CS |
488 | goto error0; |
489 | } | |
fd23683c | 490 | |
ee1a47ab CH |
491 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
492 | xfs_btree_init_block(mp, bp, XFS_IBT_CRC_MAGIC, 0, 0, | |
493 | agno, XFS_BTREE_CRC_BLOCKS); | |
494 | else | |
495 | xfs_btree_init_block(mp, bp, XFS_IBT_MAGIC, 0, 0, | |
496 | agno, 0); | |
b64f3a39 | 497 | |
c2b006c1 CH |
498 | error = xfs_bwrite(bp); |
499 | xfs_buf_relse(bp); | |
500 | if (error) | |
1da177e4 | 501 | goto error0; |
a3fa516d BF |
502 | |
503 | /* | |
504 | * FINO btree root block | |
505 | */ | |
506 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { | |
507 | bp = xfs_growfs_get_hdr_buf(mp, | |
508 | XFS_AGB_TO_DADDR(mp, agno, XFS_FIBT_BLOCK(mp)), | |
509 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
510 | &xfs_inobt_buf_ops); | |
511 | if (!bp) { | |
2451337d | 512 | error = -ENOMEM; |
a3fa516d BF |
513 | goto error0; |
514 | } | |
515 | ||
516 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
517 | xfs_btree_init_block(mp, bp, XFS_FIBT_CRC_MAGIC, | |
518 | 0, 0, agno, | |
519 | XFS_BTREE_CRC_BLOCKS); | |
520 | else | |
521 | xfs_btree_init_block(mp, bp, XFS_FIBT_MAGIC, 0, | |
522 | 0, agno, 0); | |
523 | ||
524 | error = xfs_bwrite(bp); | |
525 | xfs_buf_relse(bp); | |
526 | if (error) | |
527 | goto error0; | |
528 | } | |
529 | ||
ac4fef69 DW |
530 | /* |
531 | * refcount btree root block | |
532 | */ | |
533 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { | |
534 | bp = xfs_growfs_get_hdr_buf(mp, | |
535 | XFS_AGB_TO_DADDR(mp, agno, xfs_refc_block(mp)), | |
536 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
537 | &xfs_refcountbt_buf_ops); | |
538 | if (!bp) { | |
539 | error = -ENOMEM; | |
540 | goto error0; | |
541 | } | |
542 | ||
543 | xfs_btree_init_block(mp, bp, XFS_REFC_CRC_MAGIC, | |
544 | 0, 0, agno, | |
545 | XFS_BTREE_CRC_BLOCKS); | |
546 | ||
547 | error = xfs_bwrite(bp); | |
548 | xfs_buf_relse(bp); | |
549 | if (error) | |
550 | goto error0; | |
551 | } | |
1da177e4 LT |
552 | } |
553 | xfs_trans_agblocks_delta(tp, nfree); | |
554 | /* | |
555 | * There are new blocks in the old last a.g. | |
556 | */ | |
557 | if (new) { | |
340785cc DW |
558 | struct xfs_owner_info oinfo; |
559 | ||
1da177e4 LT |
560 | /* |
561 | * Change the agi length. | |
562 | */ | |
563 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
564 | if (error) { | |
565 | goto error0; | |
566 | } | |
567 | ASSERT(bp); | |
568 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 569 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 570 | ASSERT(nagcount == oagcount || |
16259e7d | 571 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
572 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
573 | /* | |
574 | * Change agf length. | |
575 | */ | |
576 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
577 | if (error) { | |
578 | goto error0; | |
579 | } | |
580 | ASSERT(bp); | |
581 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 582 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
583 | ASSERT(be32_to_cpu(agf->agf_length) == |
584 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 585 | |
0164af51 | 586 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
340785cc | 587 | |
1da177e4 LT |
588 | /* |
589 | * Free the new space. | |
340785cc DW |
590 | * |
591 | * XFS_RMAP_OWN_NULL is used here to tell the rmap btree that | |
592 | * this doesn't actually exist in the rmap btree. | |
1da177e4 | 593 | */ |
340785cc DW |
594 | xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_NULL); |
595 | error = xfs_free_extent(tp, | |
596 | XFS_AGB_TO_FSB(mp, agno, | |
597 | be32_to_cpu(agf->agf_length) - new), | |
3fd129b6 | 598 | new, &oinfo, XFS_AG_RESV_NONE); |
340785cc | 599 | if (error) |
1da177e4 | 600 | goto error0; |
1da177e4 | 601 | } |
1c1c6ebc DC |
602 | |
603 | /* | |
604 | * Update changed superblock fields transactionally. These are not | |
605 | * seen by the rest of the world until the transaction commit applies | |
606 | * them atomically to the superblock. | |
607 | */ | |
1da177e4 LT |
608 | if (nagcount > oagcount) |
609 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
610 | if (nb > mp->m_sb.sb_dblocks) | |
611 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
612 | nb - mp->m_sb.sb_dblocks); | |
613 | if (nfree) | |
614 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
615 | if (dpct) | |
616 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
f8079b85 | 617 | xfs_trans_set_sync(tp); |
70393313 | 618 | error = xfs_trans_commit(tp); |
1c1c6ebc | 619 | if (error) |
1da177e4 | 620 | return error; |
1c1c6ebc | 621 | |
1da177e4 LT |
622 | /* New allocation groups fully initialized, so update mount struct */ |
623 | if (nagimax) | |
624 | mp->m_maxagi = nagimax; | |
625 | if (mp->m_sb.sb_imax_pct) { | |
626 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
627 | do_div(icount, 100); | |
628 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
629 | } else | |
630 | mp->m_maxicount = 0; | |
055388a3 | 631 | xfs_set_low_space_thresholds(mp); |
52548852 | 632 | mp->m_alloc_set_aside = xfs_alloc_set_aside(mp); |
1c1c6ebc | 633 | |
20e73b00 DW |
634 | /* |
635 | * If we expanded the last AG, free the per-AG reservation | |
636 | * so we can reinitialize it with the new size. | |
637 | */ | |
638 | if (new) { | |
639 | struct xfs_perag *pag; | |
640 | ||
641 | pag = xfs_perag_get(mp, agno); | |
642 | error = xfs_ag_resv_free(pag); | |
643 | xfs_perag_put(pag); | |
644 | if (error) | |
645 | goto out; | |
646 | } | |
647 | ||
84d69619 DW |
648 | /* Reserve AG metadata blocks. */ |
649 | error = xfs_fs_reserve_ag_blocks(mp); | |
650 | if (error && error != -ENOSPC) | |
651 | goto out; | |
652 | ||
1c1c6ebc | 653 | /* update secondary superblocks. */ |
1da177e4 | 654 | for (agno = 1; agno < nagcount; agno++) { |
1375cb65 DC |
655 | error = 0; |
656 | /* | |
657 | * new secondary superblocks need to be zeroed, not read from | |
658 | * disk as the contents of the new area we are growing into is | |
659 | * completely unknown. | |
660 | */ | |
661 | if (agno < oagcount) { | |
662 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1da177e4 | 663 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
98021821 | 664 | XFS_FSS_TO_BB(mp, 1), 0, &bp, |
1813dd64 | 665 | &xfs_sb_buf_ops); |
1375cb65 DC |
666 | } else { |
667 | bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, | |
668 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
669 | XFS_FSS_TO_BB(mp, 1), 0); | |
b0f539de | 670 | if (bp) { |
1813dd64 | 671 | bp->b_ops = &xfs_sb_buf_ops; |
1375cb65 | 672 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); |
b0f539de | 673 | } else |
2451337d | 674 | error = -ENOMEM; |
1375cb65 DC |
675 | } |
676 | ||
59e5a0e8 ES |
677 | /* |
678 | * If we get an error reading or writing alternate superblocks, | |
679 | * continue. xfs_repair chooses the "best" superblock based | |
680 | * on most matches; if we break early, we'll leave more | |
681 | * superblocks un-updated than updated, and xfs_repair may | |
682 | * pick them over the properly-updated primary. | |
683 | */ | |
1da177e4 | 684 | if (error) { |
53487786 DC |
685 | xfs_warn(mp, |
686 | "error %d reading secondary superblock for ag %d", | |
1da177e4 | 687 | error, agno); |
59e5a0e8 ES |
688 | saved_error = error; |
689 | continue; | |
1da177e4 | 690 | } |
4d11a402 | 691 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); |
98021821 | 692 | |
c2b006c1 CH |
693 | error = xfs_bwrite(bp); |
694 | xfs_buf_relse(bp); | |
695 | if (error) { | |
53487786 | 696 | xfs_warn(mp, |
1da177e4 LT |
697 | "write error %d updating secondary superblock for ag %d", |
698 | error, agno); | |
59e5a0e8 ES |
699 | saved_error = error; |
700 | continue; | |
1da177e4 LT |
701 | } |
702 | } | |
84d69619 DW |
703 | |
704 | out: | |
59e5a0e8 | 705 | return saved_error ? saved_error : error; |
1da177e4 LT |
706 | |
707 | error0: | |
4906e215 | 708 | xfs_trans_cancel(tp); |
1da177e4 LT |
709 | return error; |
710 | } | |
711 | ||
712 | static int | |
713 | xfs_growfs_log_private( | |
714 | xfs_mount_t *mp, /* mount point for filesystem */ | |
715 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
716 | { | |
717 | xfs_extlen_t nb; | |
718 | ||
719 | nb = in->newblocks; | |
720 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
2451337d | 721 | return -EINVAL; |
1da177e4 LT |
722 | if (nb == mp->m_sb.sb_logblocks && |
723 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
2451337d | 724 | return -EINVAL; |
1da177e4 LT |
725 | /* |
726 | * Moving the log is hard, need new interfaces to sync | |
727 | * the log first, hold off all activity while moving it. | |
728 | * Can have shorter or longer log in the same space, | |
729 | * or transform internal to external log or vice versa. | |
730 | */ | |
2451337d | 731 | return -ENOSYS; |
1da177e4 LT |
732 | } |
733 | ||
734 | /* | |
735 | * protected versions of growfs function acquire and release locks on the mount | |
736 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
737 | * XFS_IOC_FSGROWFSRT | |
738 | */ | |
739 | ||
740 | ||
741 | int | |
742 | xfs_growfs_data( | |
743 | xfs_mount_t *mp, | |
744 | xfs_growfs_data_t *in) | |
745 | { | |
746 | int error; | |
743bb465 | 747 | |
748 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 749 | return -EPERM; |
cc92e7ac | 750 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 751 | return -EWOULDBLOCK; |
1da177e4 | 752 | error = xfs_growfs_data_private(mp, in); |
52785112 CH |
753 | /* |
754 | * Increment the generation unconditionally, the error could be from | |
755 | * updating the secondary superblocks, in which case the new size | |
756 | * is live already. | |
757 | */ | |
758 | mp->m_generation++; | |
cc92e7ac | 759 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
760 | return error; |
761 | } | |
762 | ||
763 | int | |
764 | xfs_growfs_log( | |
765 | xfs_mount_t *mp, | |
766 | xfs_growfs_log_t *in) | |
767 | { | |
768 | int error; | |
743bb465 | 769 | |
770 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 771 | return -EPERM; |
cc92e7ac | 772 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 773 | return -EWOULDBLOCK; |
1da177e4 | 774 | error = xfs_growfs_log_private(mp, in); |
cc92e7ac | 775 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
776 | return error; |
777 | } | |
778 | ||
779 | /* | |
780 | * exported through ioctl XFS_IOC_FSCOUNTS | |
781 | */ | |
782 | ||
783 | int | |
784 | xfs_fs_counts( | |
785 | xfs_mount_t *mp, | |
786 | xfs_fsop_counts_t *cnt) | |
787 | { | |
501ab323 | 788 | cnt->allocino = percpu_counter_read_positive(&mp->m_icount); |
e88b64ea | 789 | cnt->freeino = percpu_counter_read_positive(&mp->m_ifree); |
0d485ada | 790 | cnt->freedata = percpu_counter_read_positive(&mp->m_fdblocks) - |
52548852 | 791 | mp->m_alloc_set_aside; |
501ab323 | 792 | |
3685c2a1 | 793 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 794 | cnt->freertx = mp->m_sb.sb_frextents; |
3685c2a1 | 795 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
796 | return 0; |
797 | } | |
798 | ||
799 | /* | |
800 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
801 | * | |
802 | * xfs_reserve_blocks is called to set m_resblks | |
803 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 804 | * is kept in m_resblks_avail. |
1da177e4 LT |
805 | * |
806 | * Reserve the requested number of blocks if available. Otherwise return | |
807 | * as many as possible to satisfy the request. The actual number | |
808 | * reserved are returned in outval | |
809 | * | |
810 | * A null inval pointer indicates that only the current reserved blocks | |
811 | * available should be returned no settings are changed. | |
812 | */ | |
813 | ||
814 | int | |
815 | xfs_reserve_blocks( | |
816 | xfs_mount_t *mp, | |
817 | __uint64_t *inval, | |
818 | xfs_fsop_resblks_t *outval) | |
819 | { | |
408fd484 BF |
820 | __int64_t lcounter, delta; |
821 | __int64_t fdblks_delta = 0; | |
1da177e4 | 822 | __uint64_t request; |
408fd484 BF |
823 | __int64_t free; |
824 | int error = 0; | |
1da177e4 LT |
825 | |
826 | /* If inval is null, report current values and return */ | |
1da177e4 | 827 | if (inval == (__uint64_t *)NULL) { |
84e1e99f | 828 | if (!outval) |
2451337d | 829 | return -EINVAL; |
1da177e4 LT |
830 | outval->resblks = mp->m_resblks; |
831 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 832 | return 0; |
1da177e4 LT |
833 | } |
834 | ||
835 | request = *inval; | |
dbcabad1 DC |
836 | |
837 | /* | |
408fd484 BF |
838 | * With per-cpu counters, this becomes an interesting problem. we need |
839 | * to work out if we are freeing or allocation blocks first, then we can | |
840 | * do the modification as necessary. | |
dbcabad1 | 841 | * |
408fd484 BF |
842 | * We do this under the m_sb_lock so that if we are near ENOSPC, we will |
843 | * hold out any changes while we work out what to do. This means that | |
844 | * the amount of free space can change while we do this, so we need to | |
845 | * retry if we end up trying to reserve more space than is available. | |
dbcabad1 | 846 | */ |
3685c2a1 | 847 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
848 | |
849 | /* | |
850 | * If our previous reservation was larger than the current value, | |
408fd484 BF |
851 | * then move any unused blocks back to the free pool. Modify the resblks |
852 | * counters directly since we shouldn't have any problems unreserving | |
853 | * space. | |
1da177e4 | 854 | */ |
1da177e4 LT |
855 | if (mp->m_resblks > request) { |
856 | lcounter = mp->m_resblks_avail - request; | |
857 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 858 | fdblks_delta = lcounter; |
1da177e4 LT |
859 | mp->m_resblks_avail -= lcounter; |
860 | } | |
861 | mp->m_resblks = request; | |
408fd484 BF |
862 | if (fdblks_delta) { |
863 | spin_unlock(&mp->m_sb_lock); | |
864 | error = xfs_mod_fdblocks(mp, fdblks_delta, 0); | |
865 | spin_lock(&mp->m_sb_lock); | |
866 | } | |
867 | ||
868 | goto out; | |
869 | } | |
4be536de | 870 | |
408fd484 BF |
871 | /* |
872 | * If the request is larger than the current reservation, reserve the | |
873 | * blocks before we update the reserve counters. Sample m_fdblocks and | |
874 | * perform a partial reservation if the request exceeds free space. | |
875 | */ | |
876 | error = -ENOSPC; | |
877 | do { | |
0d485ada | 878 | free = percpu_counter_sum(&mp->m_fdblocks) - |
52548852 | 879 | mp->m_alloc_set_aside; |
dbcabad1 | 880 | if (!free) |
408fd484 | 881 | break; |
dbcabad1 | 882 | |
1da177e4 | 883 | delta = request - mp->m_resblks; |
4be536de | 884 | lcounter = free - delta; |
408fd484 | 885 | if (lcounter < 0) |
1da177e4 | 886 | /* We can't satisfy the request, just get what we can */ |
408fd484 BF |
887 | fdblks_delta = free; |
888 | else | |
889 | fdblks_delta = delta; | |
dbcabad1 | 890 | |
dbcabad1 | 891 | /* |
408fd484 BF |
892 | * We'll either succeed in getting space from the free block |
893 | * count or we'll get an ENOSPC. If we get a ENOSPC, it means | |
894 | * things changed while we were calculating fdblks_delta and so | |
895 | * we should try again to see if there is anything left to | |
896 | * reserve. | |
dbcabad1 DC |
897 | * |
898 | * Don't set the reserved flag here - we don't want to reserve | |
899 | * the extra reserve blocks from the reserve..... | |
900 | */ | |
408fd484 BF |
901 | spin_unlock(&mp->m_sb_lock); |
902 | error = xfs_mod_fdblocks(mp, -fdblks_delta, 0); | |
903 | spin_lock(&mp->m_sb_lock); | |
904 | } while (error == -ENOSPC); | |
905 | ||
906 | /* | |
907 | * Update the reserve counters if blocks have been successfully | |
908 | * allocated. | |
909 | */ | |
910 | if (!error && fdblks_delta) { | |
911 | mp->m_resblks += fdblks_delta; | |
912 | mp->m_resblks_avail += fdblks_delta; | |
dbcabad1 | 913 | } |
408fd484 BF |
914 | |
915 | out: | |
916 | if (outval) { | |
917 | outval->resblks = mp->m_resblks; | |
918 | outval->resblks_avail = mp->m_resblks_avail; | |
919 | } | |
920 | ||
921 | spin_unlock(&mp->m_sb_lock); | |
922 | return error; | |
1da177e4 LT |
923 | } |
924 | ||
1da177e4 LT |
925 | int |
926 | xfs_fs_goingdown( | |
927 | xfs_mount_t *mp, | |
928 | __uint32_t inflags) | |
929 | { | |
930 | switch (inflags) { | |
931 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 932 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 933 | |
f33c6797 | 934 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 935 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
936 | thaw_bdev(sb->s_bdev, sb); |
937 | } | |
189f4bf2 | 938 | |
1da177e4 LT |
939 | break; |
940 | } | |
941 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 942 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
943 | break; |
944 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
945 | xfs_force_shutdown(mp, |
946 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
947 | break; |
948 | default: | |
2451337d | 949 | return -EINVAL; |
1da177e4 LT |
950 | } |
951 | ||
952 | return 0; | |
953 | } | |
2af51f3a DC |
954 | |
955 | /* | |
956 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
957 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
958 | * that absolutely nothing persistent happens to this filesystem after this | |
959 | * point. | |
960 | */ | |
961 | void | |
962 | xfs_do_force_shutdown( | |
963 | xfs_mount_t *mp, | |
964 | int flags, | |
965 | char *fname, | |
966 | int lnnum) | |
967 | { | |
968 | int logerror; | |
969 | ||
970 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
971 | ||
972 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
973 | xfs_notice(mp, | |
974 | "%s(0x%x) called from line %d of file %s. Return address = 0x%p", | |
975 | __func__, flags, lnnum, fname, __return_address); | |
976 | } | |
977 | /* | |
978 | * No need to duplicate efforts. | |
979 | */ | |
980 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
981 | return; | |
982 | ||
983 | /* | |
984 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
985 | * queue up anybody new on the log reservations, and wakes up | |
986 | * everybody who's sleeping on log reservations to tell them | |
987 | * the bad news. | |
988 | */ | |
989 | if (xfs_log_force_umount(mp, logerror)) | |
990 | return; | |
991 | ||
992 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
993 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
994 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
995 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
996 | xfs_stack_trace(); | |
997 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
998 | if (logerror) { | |
999 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
1000 | "Log I/O Error Detected. Shutting down filesystem"); | |
1001 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
1002 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
1003 | "All device paths lost. Shutting down filesystem"); | |
1004 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
1005 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
1006 | "I/O Error Detected. Shutting down filesystem"); | |
1007 | } | |
1008 | } | |
1009 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
1010 | xfs_alert(mp, | |
1011 | "Please umount the filesystem and rectify the problem(s)"); | |
1012 | } | |
1013 | } | |
84d69619 DW |
1014 | |
1015 | /* | |
1016 | * Reserve free space for per-AG metadata. | |
1017 | */ | |
1018 | int | |
1019 | xfs_fs_reserve_ag_blocks( | |
1020 | struct xfs_mount *mp) | |
1021 | { | |
1022 | xfs_agnumber_t agno; | |
1023 | struct xfs_perag *pag; | |
1024 | int error = 0; | |
1025 | int err2; | |
1026 | ||
1027 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
1028 | pag = xfs_perag_get(mp, agno); | |
1029 | err2 = xfs_ag_resv_init(pag); | |
1030 | xfs_perag_put(pag); | |
1031 | if (err2 && !error) | |
1032 | error = err2; | |
1033 | } | |
1034 | ||
1035 | if (error && error != -ENOSPC) { | |
1036 | xfs_warn(mp, | |
1037 | "Error %d reserving per-AG metadata reserve pool.", error); | |
1038 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
1039 | } | |
1040 | ||
1041 | return error; | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * Free space reserved for per-AG metadata. | |
1046 | */ | |
1047 | int | |
1048 | xfs_fs_unreserve_ag_blocks( | |
1049 | struct xfs_mount *mp) | |
1050 | { | |
1051 | xfs_agnumber_t agno; | |
1052 | struct xfs_perag *pag; | |
1053 | int error = 0; | |
1054 | int err2; | |
1055 | ||
1056 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
1057 | pag = xfs_perag_get(mp, agno); | |
1058 | err2 = xfs_ag_resv_free(pag); | |
1059 | xfs_perag_put(pag); | |
1060 | if (err2 && !error) | |
1061 | error = err2; | |
1062 | } | |
1063 | ||
1064 | if (error) | |
1065 | xfs_warn(mp, | |
1066 | "Error %d freeing per-AG metadata reserve pool.", error); | |
1067 | ||
1068 | return error; | |
1069 | } |