Commit | Line | Data |
---|---|---|
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 | ||
fd23683c DC |
52 | static struct xfs_buf * |
53 | xfs_growfs_get_hdr_buf( | |
54 | struct xfs_mount *mp, | |
55 | xfs_daddr_t blkno, | |
56 | size_t numblks, | |
1813dd64 DC |
57 | int flags, |
58 | const struct xfs_buf_ops *ops) | |
fd23683c DC |
59 | { |
60 | struct xfs_buf *bp; | |
61 | ||
62 | bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); | |
63 | if (!bp) | |
64 | return NULL; | |
65 | ||
66 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); | |
67 | bp->b_bn = blkno; | |
68 | bp->b_maps[0].bm_bn = blkno; | |
1813dd64 | 69 | bp->b_ops = ops; |
fd23683c DC |
70 | |
71 | return bp; | |
72 | } | |
73 | ||
1da177e4 LT |
74 | static int |
75 | xfs_growfs_data_private( | |
76 | xfs_mount_t *mp, /* mount point for filesystem */ | |
77 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
78 | { | |
79 | xfs_agf_t *agf; | |
de497688 | 80 | struct xfs_agfl *agfl; |
1da177e4 LT |
81 | xfs_agi_t *agi; |
82 | xfs_agnumber_t agno; | |
83 | xfs_extlen_t agsize; | |
84 | xfs_extlen_t tmpsize; | |
85 | xfs_alloc_rec_t *arec; | |
1da177e4 LT |
86 | xfs_buf_t *bp; |
87 | int bucket; | |
88 | int dpct; | |
59e5a0e8 | 89 | int error, saved_error = 0; |
1da177e4 LT |
90 | xfs_agnumber_t nagcount; |
91 | xfs_agnumber_t nagimax = 0; | |
92 | xfs_rfsblock_t nb, nb_mod; | |
93 | xfs_rfsblock_t new; | |
94 | xfs_rfsblock_t nfree; | |
95 | xfs_agnumber_t oagcount; | |
96 | int pct; | |
1da177e4 LT |
97 | xfs_trans_t *tp; |
98 | ||
99 | nb = in->newblocks; | |
100 | pct = in->imaxpct; | |
101 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
2451337d | 102 | return -EINVAL; |
4cc929ee NS |
103 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
104 | return error; | |
1da177e4 | 105 | dpct = pct - mp->m_sb.sb_imax_pct; |
ba372674 | 106 | error = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 107 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
ba372674 DC |
108 | XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL); |
109 | if (error) | |
eab4e633 | 110 | return error; |
1da177e4 LT |
111 | xfs_buf_relse(bp); |
112 | ||
113 | new = nb; /* use new as a temporary here */ | |
114 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
115 | nagcount = new + (nb_mod != 0); | |
116 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
117 | nagcount--; | |
e6da7c9f | 118 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 | 119 | if (nb < mp->m_sb.sb_dblocks) |
2451337d | 120 | return -EINVAL; |
1da177e4 LT |
121 | } |
122 | new = nb - mp->m_sb.sb_dblocks; | |
123 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 124 | |
1c1c6ebc DC |
125 | /* allocate the new per-ag structures */ |
126 | if (nagcount > oagcount) { | |
127 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
128 | if (error) | |
129 | return error; | |
1da177e4 | 130 | } |
1c1c6ebc | 131 | |
253f4911 CH |
132 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_growdata, |
133 | XFS_GROWFS_SPACE_RES(mp), 0, XFS_TRANS_RESERVE, &tp); | |
134 | if (error) | |
1da177e4 | 135 | return error; |
1da177e4 | 136 | |
1c1c6ebc DC |
137 | /* |
138 | * Write new AG headers to disk. Non-transactional, but written | |
139 | * synchronously so they are completed prior to the growfs transaction | |
140 | * being logged. | |
141 | */ | |
1da177e4 LT |
142 | nfree = 0; |
143 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
f94c4457 DC |
144 | __be32 *agfl_bno; |
145 | ||
1da177e4 | 146 | /* |
de497688 | 147 | * AG freespace header block |
1da177e4 | 148 | */ |
fd23683c DC |
149 | bp = xfs_growfs_get_hdr_buf(mp, |
150 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
1813dd64 DC |
151 | XFS_FSS_TO_BB(mp, 1), 0, |
152 | &xfs_agf_buf_ops); | |
b522950f | 153 | if (!bp) { |
2451337d | 154 | error = -ENOMEM; |
b522950f CS |
155 | goto error0; |
156 | } | |
fd23683c | 157 | |
1da177e4 | 158 | agf = XFS_BUF_TO_AGF(bp); |
16259e7d CH |
159 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
160 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
161 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
162 | if (agno == nagcount - 1) |
163 | agsize = | |
164 | nb - | |
165 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
166 | else | |
167 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
168 | agf->agf_length = cpu_to_be32(agsize); |
169 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
170 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
171 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
172 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
e70d829f DW |
173 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { |
174 | agf->agf_roots[XFS_BTNUM_RMAPi] = | |
175 | cpu_to_be32(XFS_RMAP_BLOCK(mp)); | |
176 | agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1); | |
f32866fd | 177 | agf->agf_rmap_blocks = cpu_to_be32(1); |
e70d829f DW |
178 | } |
179 | ||
ad747e3b DC |
180 | agf->agf_flfirst = cpu_to_be32(1); |
181 | agf->agf_fllast = 0; | |
1da177e4 | 182 | agf->agf_flcount = 0; |
8018026e | 183 | tmpsize = agsize - mp->m_ag_prealloc_blocks; |
16259e7d CH |
184 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
185 | agf->agf_longest = cpu_to_be32(tmpsize); | |
4e0e6040 | 186 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
ac383de2 | 187 | uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid); |
ac4fef69 DW |
188 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { |
189 | agf->agf_refcount_root = cpu_to_be32( | |
190 | xfs_refc_block(mp)); | |
191 | agf->agf_refcount_level = cpu_to_be32(1); | |
192 | agf->agf_refcount_blocks = cpu_to_be32(1); | |
193 | } | |
4e0e6040 | 194 | |
c2b006c1 CH |
195 | error = xfs_bwrite(bp); |
196 | xfs_buf_relse(bp); | |
197 | if (error) | |
1da177e4 | 198 | goto error0; |
c2b006c1 | 199 | |
de497688 DC |
200 | /* |
201 | * AG freelist header block | |
202 | */ | |
203 | bp = xfs_growfs_get_hdr_buf(mp, | |
204 | XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), | |
1813dd64 DC |
205 | XFS_FSS_TO_BB(mp, 1), 0, |
206 | &xfs_agfl_buf_ops); | |
de497688 | 207 | if (!bp) { |
2451337d | 208 | error = -ENOMEM; |
de497688 DC |
209 | goto error0; |
210 | } | |
211 | ||
212 | agfl = XFS_BUF_TO_AGFL(bp); | |
77c95bba CH |
213 | if (xfs_sb_version_hascrc(&mp->m_sb)) { |
214 | agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); | |
215 | agfl->agfl_seqno = cpu_to_be32(agno); | |
ac383de2 | 216 | uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid); |
77c95bba | 217 | } |
f94c4457 DC |
218 | |
219 | agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); | |
a78ee256 | 220 | for (bucket = 0; bucket < xfs_agfl_size(mp); bucket++) |
f94c4457 | 221 | agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); |
de497688 DC |
222 | |
223 | error = xfs_bwrite(bp); | |
224 | xfs_buf_relse(bp); | |
225 | if (error) | |
226 | goto error0; | |
227 | ||
1da177e4 LT |
228 | /* |
229 | * AG inode header block | |
230 | */ | |
fd23683c DC |
231 | bp = xfs_growfs_get_hdr_buf(mp, |
232 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
1813dd64 DC |
233 | XFS_FSS_TO_BB(mp, 1), 0, |
234 | &xfs_agi_buf_ops); | |
b522950f | 235 | if (!bp) { |
2451337d | 236 | error = -ENOMEM; |
b522950f CS |
237 | goto error0; |
238 | } | |
fd23683c | 239 | |
1da177e4 | 240 | agi = XFS_BUF_TO_AGI(bp); |
16259e7d CH |
241 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
242 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
243 | agi->agi_seqno = cpu_to_be32(agno); | |
244 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 245 | agi->agi_count = 0; |
16259e7d CH |
246 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
247 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 248 | agi->agi_freecount = 0; |
16259e7d CH |
249 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
250 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
983d09ff | 251 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
ac383de2 | 252 | uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid); |
a3fa516d BF |
253 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { |
254 | agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp)); | |
255 | agi->agi_free_level = cpu_to_be32(1); | |
256 | } | |
1da177e4 | 257 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 258 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
983d09ff | 259 | |
c2b006c1 CH |
260 | error = xfs_bwrite(bp); |
261 | xfs_buf_relse(bp); | |
262 | if (error) | |
1da177e4 | 263 | goto error0; |
c2b006c1 | 264 | |
1da177e4 LT |
265 | /* |
266 | * BNO btree root block | |
267 | */ | |
fd23683c DC |
268 | bp = xfs_growfs_get_hdr_buf(mp, |
269 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
1813dd64 DC |
270 | BTOBB(mp->m_sb.sb_blocksize), 0, |
271 | &xfs_allocbt_buf_ops); | |
fd23683c | 272 | |
b522950f | 273 | if (!bp) { |
2451337d | 274 | error = -ENOMEM; |
b522950f CS |
275 | goto error0; |
276 | } | |
b64f3a39 | 277 | |
b6f41e44 | 278 | xfs_btree_init_block(mp, bp, XFS_BTNUM_BNO, 0, 1, agno, 0); |
ee1a47ab | 279 | |
b64f3a39 | 280 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
8018026e | 281 | arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); |
16259e7d CH |
282 | arec->ar_blockcount = cpu_to_be32( |
283 | agsize - be32_to_cpu(arec->ar_startblock)); | |
b64f3a39 | 284 | |
c2b006c1 CH |
285 | error = xfs_bwrite(bp); |
286 | xfs_buf_relse(bp); | |
287 | if (error) | |
1da177e4 | 288 | goto error0; |
c2b006c1 | 289 | |
1da177e4 LT |
290 | /* |
291 | * CNT btree root block | |
292 | */ | |
fd23683c DC |
293 | bp = xfs_growfs_get_hdr_buf(mp, |
294 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
1813dd64 DC |
295 | BTOBB(mp->m_sb.sb_blocksize), 0, |
296 | &xfs_allocbt_buf_ops); | |
b522950f | 297 | if (!bp) { |
2451337d | 298 | error = -ENOMEM; |
b522950f CS |
299 | goto error0; |
300 | } | |
b64f3a39 | 301 | |
b6f41e44 | 302 | xfs_btree_init_block(mp, bp, XFS_BTNUM_CNT, 0, 1, agno, 0); |
ee1a47ab | 303 | |
b64f3a39 | 304 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
8018026e | 305 | arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); |
16259e7d CH |
306 | arec->ar_blockcount = cpu_to_be32( |
307 | agsize - be32_to_cpu(arec->ar_startblock)); | |
308 | nfree += be32_to_cpu(arec->ar_blockcount); | |
b64f3a39 | 309 | |
c2b006c1 CH |
310 | error = xfs_bwrite(bp); |
311 | xfs_buf_relse(bp); | |
312 | if (error) | |
1da177e4 | 313 | goto error0; |
c2b006c1 | 314 | |
e70d829f DW |
315 | /* RMAP btree root block */ |
316 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { | |
317 | struct xfs_rmap_rec *rrec; | |
318 | struct xfs_btree_block *block; | |
319 | ||
320 | bp = xfs_growfs_get_hdr_buf(mp, | |
321 | XFS_AGB_TO_DADDR(mp, agno, XFS_RMAP_BLOCK(mp)), | |
322 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
323 | &xfs_rmapbt_buf_ops); | |
324 | if (!bp) { | |
325 | error = -ENOMEM; | |
326 | goto error0; | |
327 | } | |
328 | ||
b6f41e44 | 329 | xfs_btree_init_block(mp, bp, XFS_BTNUM_RMAP, 0, 0, |
f88ae46b | 330 | agno, 0); |
e70d829f DW |
331 | block = XFS_BUF_TO_BLOCK(bp); |
332 | ||
333 | ||
334 | /* | |
335 | * mark the AG header regions as static metadata The BNO | |
336 | * btree block is the first block after the headers, so | |
337 | * it's location defines the size of region the static | |
338 | * metadata consumes. | |
339 | * | |
340 | * Note: unlike mkfs, we never have to account for log | |
341 | * space when growing the data regions | |
342 | */ | |
343 | rrec = XFS_RMAP_REC_ADDR(block, 1); | |
344 | rrec->rm_startblock = 0; | |
345 | rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
346 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS); | |
347 | rrec->rm_offset = 0; | |
348 | be16_add_cpu(&block->bb_numrecs, 1); | |
349 | ||
350 | /* account freespace btree root blocks */ | |
351 | rrec = XFS_RMAP_REC_ADDR(block, 2); | |
352 | rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
353 | rrec->rm_blockcount = cpu_to_be32(2); | |
354 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); | |
355 | rrec->rm_offset = 0; | |
356 | be16_add_cpu(&block->bb_numrecs, 1); | |
357 | ||
358 | /* account inode btree root blocks */ | |
359 | rrec = XFS_RMAP_REC_ADDR(block, 3); | |
360 | rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp)); | |
361 | rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) - | |
362 | XFS_IBT_BLOCK(mp)); | |
363 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT); | |
364 | rrec->rm_offset = 0; | |
365 | be16_add_cpu(&block->bb_numrecs, 1); | |
366 | ||
367 | /* account for rmap btree root */ | |
368 | rrec = XFS_RMAP_REC_ADDR(block, 4); | |
369 | rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp)); | |
370 | rrec->rm_blockcount = cpu_to_be32(1); | |
371 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); | |
372 | rrec->rm_offset = 0; | |
373 | be16_add_cpu(&block->bb_numrecs, 1); | |
374 | ||
ac4fef69 DW |
375 | /* account for refc btree root */ |
376 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { | |
377 | rrec = XFS_RMAP_REC_ADDR(block, 5); | |
378 | rrec->rm_startblock = cpu_to_be32( | |
379 | xfs_refc_block(mp)); | |
380 | rrec->rm_blockcount = cpu_to_be32(1); | |
381 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_REFC); | |
382 | rrec->rm_offset = 0; | |
383 | be16_add_cpu(&block->bb_numrecs, 1); | |
384 | } | |
385 | ||
e70d829f DW |
386 | error = xfs_bwrite(bp); |
387 | xfs_buf_relse(bp); | |
388 | if (error) | |
389 | goto error0; | |
390 | } | |
391 | ||
1da177e4 LT |
392 | /* |
393 | * INO btree root block | |
394 | */ | |
fd23683c DC |
395 | bp = xfs_growfs_get_hdr_buf(mp, |
396 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
1813dd64 DC |
397 | BTOBB(mp->m_sb.sb_blocksize), 0, |
398 | &xfs_inobt_buf_ops); | |
b522950f | 399 | if (!bp) { |
2451337d | 400 | error = -ENOMEM; |
b522950f CS |
401 | goto error0; |
402 | } | |
fd23683c | 403 | |
b6f41e44 | 404 | xfs_btree_init_block(mp, bp, XFS_BTNUM_INO , 0, 0, agno, 0); |
b64f3a39 | 405 | |
c2b006c1 CH |
406 | error = xfs_bwrite(bp); |
407 | xfs_buf_relse(bp); | |
408 | if (error) | |
1da177e4 | 409 | goto error0; |
a3fa516d BF |
410 | |
411 | /* | |
412 | * FINO btree root block | |
413 | */ | |
414 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { | |
415 | bp = xfs_growfs_get_hdr_buf(mp, | |
416 | XFS_AGB_TO_DADDR(mp, agno, XFS_FIBT_BLOCK(mp)), | |
417 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
418 | &xfs_inobt_buf_ops); | |
419 | if (!bp) { | |
2451337d | 420 | error = -ENOMEM; |
a3fa516d BF |
421 | goto error0; |
422 | } | |
423 | ||
b6f41e44 | 424 | xfs_btree_init_block(mp, bp, XFS_BTNUM_FINO, |
f88ae46b | 425 | 0, 0, agno, 0); |
a3fa516d BF |
426 | |
427 | error = xfs_bwrite(bp); | |
428 | xfs_buf_relse(bp); | |
429 | if (error) | |
430 | goto error0; | |
431 | } | |
432 | ||
ac4fef69 DW |
433 | /* |
434 | * refcount btree root block | |
435 | */ | |
436 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { | |
437 | bp = xfs_growfs_get_hdr_buf(mp, | |
438 | XFS_AGB_TO_DADDR(mp, agno, xfs_refc_block(mp)), | |
439 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
440 | &xfs_refcountbt_buf_ops); | |
441 | if (!bp) { | |
442 | error = -ENOMEM; | |
443 | goto error0; | |
444 | } | |
445 | ||
b6f41e44 | 446 | xfs_btree_init_block(mp, bp, XFS_BTNUM_REFC, |
f88ae46b | 447 | 0, 0, agno, 0); |
ac4fef69 DW |
448 | |
449 | error = xfs_bwrite(bp); | |
450 | xfs_buf_relse(bp); | |
451 | if (error) | |
452 | goto error0; | |
453 | } | |
1da177e4 LT |
454 | } |
455 | xfs_trans_agblocks_delta(tp, nfree); | |
456 | /* | |
457 | * There are new blocks in the old last a.g. | |
458 | */ | |
459 | if (new) { | |
340785cc DW |
460 | struct xfs_owner_info oinfo; |
461 | ||
1da177e4 LT |
462 | /* |
463 | * Change the agi length. | |
464 | */ | |
465 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
466 | if (error) { | |
467 | goto error0; | |
468 | } | |
469 | ASSERT(bp); | |
470 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 471 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 472 | ASSERT(nagcount == oagcount || |
16259e7d | 473 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
474 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
475 | /* | |
476 | * Change agf length. | |
477 | */ | |
478 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
479 | if (error) { | |
480 | goto error0; | |
481 | } | |
482 | ASSERT(bp); | |
483 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 484 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
485 | ASSERT(be32_to_cpu(agf->agf_length) == |
486 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 487 | |
0164af51 | 488 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
340785cc | 489 | |
1da177e4 LT |
490 | /* |
491 | * Free the new space. | |
340785cc DW |
492 | * |
493 | * XFS_RMAP_OWN_NULL is used here to tell the rmap btree that | |
494 | * this doesn't actually exist in the rmap btree. | |
1da177e4 | 495 | */ |
340785cc | 496 | xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_NULL); |
33df3a9c DW |
497 | error = xfs_rmap_free(tp, bp, agno, |
498 | be32_to_cpu(agf->agf_length) - new, | |
499 | new, &oinfo); | |
500 | if (error) | |
501 | goto error0; | |
340785cc DW |
502 | error = xfs_free_extent(tp, |
503 | XFS_AGB_TO_FSB(mp, agno, | |
504 | be32_to_cpu(agf->agf_length) - new), | |
3fd129b6 | 505 | new, &oinfo, XFS_AG_RESV_NONE); |
340785cc | 506 | if (error) |
1da177e4 | 507 | goto error0; |
1da177e4 | 508 | } |
1c1c6ebc DC |
509 | |
510 | /* | |
511 | * Update changed superblock fields transactionally. These are not | |
512 | * seen by the rest of the world until the transaction commit applies | |
513 | * them atomically to the superblock. | |
514 | */ | |
1da177e4 LT |
515 | if (nagcount > oagcount) |
516 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
517 | if (nb > mp->m_sb.sb_dblocks) | |
518 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
519 | nb - mp->m_sb.sb_dblocks); | |
520 | if (nfree) | |
521 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
522 | if (dpct) | |
523 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
f8079b85 | 524 | xfs_trans_set_sync(tp); |
70393313 | 525 | error = xfs_trans_commit(tp); |
1c1c6ebc | 526 | if (error) |
1da177e4 | 527 | return error; |
1c1c6ebc | 528 | |
1da177e4 LT |
529 | /* New allocation groups fully initialized, so update mount struct */ |
530 | if (nagimax) | |
531 | mp->m_maxagi = nagimax; | |
532 | if (mp->m_sb.sb_imax_pct) { | |
c8ce540d | 533 | uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; |
1da177e4 LT |
534 | do_div(icount, 100); |
535 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
536 | } else | |
537 | mp->m_maxicount = 0; | |
055388a3 | 538 | xfs_set_low_space_thresholds(mp); |
52548852 | 539 | mp->m_alloc_set_aside = xfs_alloc_set_aside(mp); |
1c1c6ebc | 540 | |
20e73b00 DW |
541 | /* |
542 | * If we expanded the last AG, free the per-AG reservation | |
543 | * so we can reinitialize it with the new size. | |
544 | */ | |
545 | if (new) { | |
546 | struct xfs_perag *pag; | |
547 | ||
548 | pag = xfs_perag_get(mp, agno); | |
549 | error = xfs_ag_resv_free(pag); | |
550 | xfs_perag_put(pag); | |
551 | if (error) | |
552 | goto out; | |
553 | } | |
554 | ||
84d69619 DW |
555 | /* Reserve AG metadata blocks. */ |
556 | error = xfs_fs_reserve_ag_blocks(mp); | |
557 | if (error && error != -ENOSPC) | |
558 | goto out; | |
559 | ||
1c1c6ebc | 560 | /* update secondary superblocks. */ |
1da177e4 | 561 | for (agno = 1; agno < nagcount; agno++) { |
1375cb65 DC |
562 | error = 0; |
563 | /* | |
564 | * new secondary superblocks need to be zeroed, not read from | |
565 | * disk as the contents of the new area we are growing into is | |
566 | * completely unknown. | |
567 | */ | |
568 | if (agno < oagcount) { | |
569 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1da177e4 | 570 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
98021821 | 571 | XFS_FSS_TO_BB(mp, 1), 0, &bp, |
1813dd64 | 572 | &xfs_sb_buf_ops); |
1375cb65 DC |
573 | } else { |
574 | bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, | |
575 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
576 | XFS_FSS_TO_BB(mp, 1), 0); | |
b0f539de | 577 | if (bp) { |
1813dd64 | 578 | bp->b_ops = &xfs_sb_buf_ops; |
1375cb65 | 579 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); |
b0f539de | 580 | } else |
2451337d | 581 | error = -ENOMEM; |
1375cb65 DC |
582 | } |
583 | ||
59e5a0e8 ES |
584 | /* |
585 | * If we get an error reading or writing alternate superblocks, | |
586 | * continue. xfs_repair chooses the "best" superblock based | |
587 | * on most matches; if we break early, we'll leave more | |
588 | * superblocks un-updated than updated, and xfs_repair may | |
589 | * pick them over the properly-updated primary. | |
590 | */ | |
1da177e4 | 591 | if (error) { |
53487786 DC |
592 | xfs_warn(mp, |
593 | "error %d reading secondary superblock for ag %d", | |
1da177e4 | 594 | error, agno); |
59e5a0e8 ES |
595 | saved_error = error; |
596 | continue; | |
1da177e4 | 597 | } |
4d11a402 | 598 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); |
98021821 | 599 | |
c2b006c1 CH |
600 | error = xfs_bwrite(bp); |
601 | xfs_buf_relse(bp); | |
602 | if (error) { | |
53487786 | 603 | xfs_warn(mp, |
1da177e4 LT |
604 | "write error %d updating secondary superblock for ag %d", |
605 | error, agno); | |
59e5a0e8 ES |
606 | saved_error = error; |
607 | continue; | |
1da177e4 LT |
608 | } |
609 | } | |
84d69619 DW |
610 | |
611 | out: | |
59e5a0e8 | 612 | return saved_error ? saved_error : error; |
1da177e4 LT |
613 | |
614 | error0: | |
4906e215 | 615 | xfs_trans_cancel(tp); |
1da177e4 LT |
616 | return error; |
617 | } | |
618 | ||
619 | static int | |
620 | xfs_growfs_log_private( | |
621 | xfs_mount_t *mp, /* mount point for filesystem */ | |
622 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
623 | { | |
624 | xfs_extlen_t nb; | |
625 | ||
626 | nb = in->newblocks; | |
627 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
2451337d | 628 | return -EINVAL; |
1da177e4 LT |
629 | if (nb == mp->m_sb.sb_logblocks && |
630 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
2451337d | 631 | return -EINVAL; |
1da177e4 LT |
632 | /* |
633 | * Moving the log is hard, need new interfaces to sync | |
634 | * the log first, hold off all activity while moving it. | |
635 | * Can have shorter or longer log in the same space, | |
636 | * or transform internal to external log or vice versa. | |
637 | */ | |
2451337d | 638 | return -ENOSYS; |
1da177e4 LT |
639 | } |
640 | ||
641 | /* | |
642 | * protected versions of growfs function acquire and release locks on the mount | |
643 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
644 | * XFS_IOC_FSGROWFSRT | |
645 | */ | |
646 | ||
647 | ||
648 | int | |
649 | xfs_growfs_data( | |
650 | xfs_mount_t *mp, | |
651 | xfs_growfs_data_t *in) | |
652 | { | |
653 | int error; | |
743bb465 | 654 | |
655 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 656 | return -EPERM; |
cc92e7ac | 657 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 658 | return -EWOULDBLOCK; |
1da177e4 | 659 | error = xfs_growfs_data_private(mp, in); |
52785112 CH |
660 | /* |
661 | * Increment the generation unconditionally, the error could be from | |
662 | * updating the secondary superblocks, in which case the new size | |
663 | * is live already. | |
664 | */ | |
665 | mp->m_generation++; | |
cc92e7ac | 666 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
667 | return error; |
668 | } | |
669 | ||
670 | int | |
671 | xfs_growfs_log( | |
672 | xfs_mount_t *mp, | |
673 | xfs_growfs_log_t *in) | |
674 | { | |
675 | int error; | |
743bb465 | 676 | |
677 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 678 | return -EPERM; |
cc92e7ac | 679 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 680 | return -EWOULDBLOCK; |
1da177e4 | 681 | error = xfs_growfs_log_private(mp, in); |
cc92e7ac | 682 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
683 | return error; |
684 | } | |
685 | ||
686 | /* | |
687 | * exported through ioctl XFS_IOC_FSCOUNTS | |
688 | */ | |
689 | ||
690 | int | |
691 | xfs_fs_counts( | |
692 | xfs_mount_t *mp, | |
693 | xfs_fsop_counts_t *cnt) | |
694 | { | |
501ab323 | 695 | cnt->allocino = percpu_counter_read_positive(&mp->m_icount); |
e88b64ea | 696 | cnt->freeino = percpu_counter_read_positive(&mp->m_ifree); |
0d485ada | 697 | cnt->freedata = percpu_counter_read_positive(&mp->m_fdblocks) - |
52548852 | 698 | mp->m_alloc_set_aside; |
501ab323 | 699 | |
3685c2a1 | 700 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 701 | cnt->freertx = mp->m_sb.sb_frextents; |
3685c2a1 | 702 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
703 | return 0; |
704 | } | |
705 | ||
706 | /* | |
707 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
708 | * | |
709 | * xfs_reserve_blocks is called to set m_resblks | |
710 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 711 | * is kept in m_resblks_avail. |
1da177e4 LT |
712 | * |
713 | * Reserve the requested number of blocks if available. Otherwise return | |
714 | * as many as possible to satisfy the request. The actual number | |
715 | * reserved are returned in outval | |
716 | * | |
717 | * A null inval pointer indicates that only the current reserved blocks | |
718 | * available should be returned no settings are changed. | |
719 | */ | |
720 | ||
721 | int | |
722 | xfs_reserve_blocks( | |
723 | xfs_mount_t *mp, | |
c8ce540d | 724 | uint64_t *inval, |
1da177e4 LT |
725 | xfs_fsop_resblks_t *outval) |
726 | { | |
c8ce540d DW |
727 | int64_t lcounter, delta; |
728 | int64_t fdblks_delta = 0; | |
729 | uint64_t request; | |
730 | int64_t free; | |
408fd484 | 731 | int error = 0; |
1da177e4 LT |
732 | |
733 | /* If inval is null, report current values and return */ | |
c8ce540d | 734 | if (inval == (uint64_t *)NULL) { |
84e1e99f | 735 | if (!outval) |
2451337d | 736 | return -EINVAL; |
1da177e4 LT |
737 | outval->resblks = mp->m_resblks; |
738 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 739 | return 0; |
1da177e4 LT |
740 | } |
741 | ||
742 | request = *inval; | |
dbcabad1 DC |
743 | |
744 | /* | |
408fd484 BF |
745 | * With per-cpu counters, this becomes an interesting problem. we need |
746 | * to work out if we are freeing or allocation blocks first, then we can | |
747 | * do the modification as necessary. | |
dbcabad1 | 748 | * |
408fd484 BF |
749 | * We do this under the m_sb_lock so that if we are near ENOSPC, we will |
750 | * hold out any changes while we work out what to do. This means that | |
751 | * the amount of free space can change while we do this, so we need to | |
752 | * retry if we end up trying to reserve more space than is available. | |
dbcabad1 | 753 | */ |
3685c2a1 | 754 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
755 | |
756 | /* | |
757 | * If our previous reservation was larger than the current value, | |
408fd484 BF |
758 | * then move any unused blocks back to the free pool. Modify the resblks |
759 | * counters directly since we shouldn't have any problems unreserving | |
760 | * space. | |
1da177e4 | 761 | */ |
1da177e4 LT |
762 | if (mp->m_resblks > request) { |
763 | lcounter = mp->m_resblks_avail - request; | |
764 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 765 | fdblks_delta = lcounter; |
1da177e4 LT |
766 | mp->m_resblks_avail -= lcounter; |
767 | } | |
768 | mp->m_resblks = request; | |
408fd484 BF |
769 | if (fdblks_delta) { |
770 | spin_unlock(&mp->m_sb_lock); | |
771 | error = xfs_mod_fdblocks(mp, fdblks_delta, 0); | |
772 | spin_lock(&mp->m_sb_lock); | |
773 | } | |
774 | ||
775 | goto out; | |
776 | } | |
4be536de | 777 | |
408fd484 BF |
778 | /* |
779 | * If the request is larger than the current reservation, reserve the | |
780 | * blocks before we update the reserve counters. Sample m_fdblocks and | |
781 | * perform a partial reservation if the request exceeds free space. | |
782 | */ | |
783 | error = -ENOSPC; | |
784 | do { | |
0d485ada | 785 | free = percpu_counter_sum(&mp->m_fdblocks) - |
52548852 | 786 | mp->m_alloc_set_aside; |
dbcabad1 | 787 | if (!free) |
408fd484 | 788 | break; |
dbcabad1 | 789 | |
1da177e4 | 790 | delta = request - mp->m_resblks; |
4be536de | 791 | lcounter = free - delta; |
408fd484 | 792 | if (lcounter < 0) |
1da177e4 | 793 | /* We can't satisfy the request, just get what we can */ |
408fd484 BF |
794 | fdblks_delta = free; |
795 | else | |
796 | fdblks_delta = delta; | |
dbcabad1 | 797 | |
dbcabad1 | 798 | /* |
408fd484 BF |
799 | * We'll either succeed in getting space from the free block |
800 | * count or we'll get an ENOSPC. If we get a ENOSPC, it means | |
801 | * things changed while we were calculating fdblks_delta and so | |
802 | * we should try again to see if there is anything left to | |
803 | * reserve. | |
dbcabad1 DC |
804 | * |
805 | * Don't set the reserved flag here - we don't want to reserve | |
806 | * the extra reserve blocks from the reserve..... | |
807 | */ | |
408fd484 BF |
808 | spin_unlock(&mp->m_sb_lock); |
809 | error = xfs_mod_fdblocks(mp, -fdblks_delta, 0); | |
810 | spin_lock(&mp->m_sb_lock); | |
811 | } while (error == -ENOSPC); | |
812 | ||
813 | /* | |
814 | * Update the reserve counters if blocks have been successfully | |
815 | * allocated. | |
816 | */ | |
817 | if (!error && fdblks_delta) { | |
818 | mp->m_resblks += fdblks_delta; | |
819 | mp->m_resblks_avail += fdblks_delta; | |
dbcabad1 | 820 | } |
408fd484 BF |
821 | |
822 | out: | |
823 | if (outval) { | |
824 | outval->resblks = mp->m_resblks; | |
825 | outval->resblks_avail = mp->m_resblks_avail; | |
826 | } | |
827 | ||
828 | spin_unlock(&mp->m_sb_lock); | |
829 | return error; | |
1da177e4 LT |
830 | } |
831 | ||
1da177e4 LT |
832 | int |
833 | xfs_fs_goingdown( | |
834 | xfs_mount_t *mp, | |
c8ce540d | 835 | uint32_t inflags) |
1da177e4 LT |
836 | { |
837 | switch (inflags) { | |
838 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 839 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 840 | |
f33c6797 | 841 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 842 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
843 | thaw_bdev(sb->s_bdev, sb); |
844 | } | |
189f4bf2 | 845 | |
1da177e4 LT |
846 | break; |
847 | } | |
848 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 849 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
850 | break; |
851 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
852 | xfs_force_shutdown(mp, |
853 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
854 | break; |
855 | default: | |
2451337d | 856 | return -EINVAL; |
1da177e4 LT |
857 | } |
858 | ||
859 | return 0; | |
860 | } | |
2af51f3a DC |
861 | |
862 | /* | |
863 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
864 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
865 | * that absolutely nothing persistent happens to this filesystem after this | |
866 | * point. | |
867 | */ | |
868 | void | |
869 | xfs_do_force_shutdown( | |
870 | xfs_mount_t *mp, | |
871 | int flags, | |
872 | char *fname, | |
873 | int lnnum) | |
874 | { | |
875 | int logerror; | |
876 | ||
877 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
878 | ||
879 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
880 | xfs_notice(mp, | |
c9690043 | 881 | "%s(0x%x) called from line %d of file %s. Return address = "PTR_FMT, |
2af51f3a DC |
882 | __func__, flags, lnnum, fname, __return_address); |
883 | } | |
884 | /* | |
885 | * No need to duplicate efforts. | |
886 | */ | |
887 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
888 | return; | |
889 | ||
890 | /* | |
891 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
892 | * queue up anybody new on the log reservations, and wakes up | |
893 | * everybody who's sleeping on log reservations to tell them | |
894 | * the bad news. | |
895 | */ | |
896 | if (xfs_log_force_umount(mp, logerror)) | |
897 | return; | |
898 | ||
899 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
900 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
901 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
902 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
903 | xfs_stack_trace(); | |
904 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
905 | if (logerror) { | |
906 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
907 | "Log I/O Error Detected. Shutting down filesystem"); | |
908 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
909 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
910 | "All device paths lost. Shutting down filesystem"); | |
911 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
912 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
913 | "I/O Error Detected. Shutting down filesystem"); | |
914 | } | |
915 | } | |
916 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
917 | xfs_alert(mp, | |
918 | "Please umount the filesystem and rectify the problem(s)"); | |
919 | } | |
920 | } | |
84d69619 DW |
921 | |
922 | /* | |
923 | * Reserve free space for per-AG metadata. | |
924 | */ | |
925 | int | |
926 | xfs_fs_reserve_ag_blocks( | |
927 | struct xfs_mount *mp) | |
928 | { | |
929 | xfs_agnumber_t agno; | |
930 | struct xfs_perag *pag; | |
931 | int error = 0; | |
932 | int err2; | |
933 | ||
934 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
935 | pag = xfs_perag_get(mp, agno); | |
936 | err2 = xfs_ag_resv_init(pag); | |
937 | xfs_perag_put(pag); | |
938 | if (err2 && !error) | |
939 | error = err2; | |
940 | } | |
941 | ||
942 | if (error && error != -ENOSPC) { | |
943 | xfs_warn(mp, | |
944 | "Error %d reserving per-AG metadata reserve pool.", error); | |
945 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
946 | } | |
947 | ||
948 | return error; | |
949 | } | |
950 | ||
951 | /* | |
952 | * Free space reserved for per-AG metadata. | |
953 | */ | |
954 | int | |
955 | xfs_fs_unreserve_ag_blocks( | |
956 | struct xfs_mount *mp) | |
957 | { | |
958 | xfs_agnumber_t agno; | |
959 | struct xfs_perag *pag; | |
960 | int error = 0; | |
961 | int err2; | |
962 | ||
963 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
964 | pag = xfs_perag_get(mp, agno); | |
965 | err2 = xfs_ag_resv_free(pag); | |
966 | xfs_perag_put(pag); | |
967 | if (err2 && !error) | |
968 | error = err2; | |
969 | } | |
970 | ||
971 | if (error) | |
972 | xfs_warn(mp, | |
973 | "Error %d freeing per-AG metadata reserve pool.", error); | |
974 | ||
975 | return error; | |
976 | } |