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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 | ||
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 | ||
cce77bcf DC |
74 | /* |
75 | * Write new AG headers to disk. Non-transactional, but written | |
76 | * synchronously so they are completed prior to the growfs transaction | |
77 | * being logged. | |
78 | */ | |
79 | static int | |
80 | xfs_grow_ag_headers( | |
81 | struct xfs_mount *mp, | |
82 | xfs_agnumber_t agno, | |
83 | xfs_extlen_t agsize, | |
9aebe805 DC |
84 | xfs_rfsblock_t *nfree, |
85 | struct list_head *buffer_list) | |
cce77bcf DC |
86 | { |
87 | struct xfs_agf *agf; | |
88 | struct xfs_agi *agi; | |
89 | struct xfs_agfl *agfl; | |
90 | __be32 *agfl_bno; | |
91 | xfs_alloc_rec_t *arec; | |
92 | struct xfs_buf *bp; | |
93 | int bucket; | |
94 | xfs_extlen_t tmpsize; | |
95 | int error = 0; | |
96 | ||
97 | /* | |
98 | * AG freespace header block | |
99 | */ | |
100 | bp = xfs_growfs_get_hdr_buf(mp, | |
101 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
102 | XFS_FSS_TO_BB(mp, 1), 0, | |
103 | &xfs_agf_buf_ops); | |
104 | if (!bp) { | |
105 | error = -ENOMEM; | |
106 | goto out_error; | |
107 | } | |
108 | ||
109 | agf = XFS_BUF_TO_AGF(bp); | |
110 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); | |
111 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
112 | agf->agf_seqno = cpu_to_be32(agno); | |
113 | agf->agf_length = cpu_to_be32(agsize); | |
114 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
115 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
116 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
117 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
118 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { | |
119 | agf->agf_roots[XFS_BTNUM_RMAPi] = | |
120 | cpu_to_be32(XFS_RMAP_BLOCK(mp)); | |
121 | agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1); | |
122 | agf->agf_rmap_blocks = cpu_to_be32(1); | |
123 | } | |
124 | ||
125 | agf->agf_flfirst = cpu_to_be32(1); | |
126 | agf->agf_fllast = 0; | |
127 | agf->agf_flcount = 0; | |
128 | tmpsize = agsize - mp->m_ag_prealloc_blocks; | |
129 | agf->agf_freeblks = cpu_to_be32(tmpsize); | |
130 | agf->agf_longest = cpu_to_be32(tmpsize); | |
131 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
132 | uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid); | |
133 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { | |
134 | agf->agf_refcount_root = cpu_to_be32( | |
135 | xfs_refc_block(mp)); | |
136 | agf->agf_refcount_level = cpu_to_be32(1); | |
137 | agf->agf_refcount_blocks = cpu_to_be32(1); | |
138 | } | |
9aebe805 | 139 | xfs_buf_delwri_queue(bp, buffer_list); |
cce77bcf | 140 | xfs_buf_relse(bp); |
cce77bcf DC |
141 | |
142 | /* | |
143 | * AG freelist header block | |
144 | */ | |
145 | bp = xfs_growfs_get_hdr_buf(mp, | |
146 | XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), | |
147 | XFS_FSS_TO_BB(mp, 1), 0, | |
148 | &xfs_agfl_buf_ops); | |
149 | if (!bp) { | |
150 | error = -ENOMEM; | |
151 | goto out_error; | |
152 | } | |
153 | ||
154 | agfl = XFS_BUF_TO_AGFL(bp); | |
155 | if (xfs_sb_version_hascrc(&mp->m_sb)) { | |
156 | agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); | |
157 | agfl->agfl_seqno = cpu_to_be32(agno); | |
158 | uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid); | |
159 | } | |
160 | ||
161 | agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); | |
162 | for (bucket = 0; bucket < xfs_agfl_size(mp); bucket++) | |
163 | agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); | |
164 | ||
9aebe805 | 165 | xfs_buf_delwri_queue(bp, buffer_list); |
cce77bcf | 166 | xfs_buf_relse(bp); |
cce77bcf DC |
167 | |
168 | /* | |
169 | * AG inode header block | |
170 | */ | |
171 | bp = xfs_growfs_get_hdr_buf(mp, | |
172 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
173 | XFS_FSS_TO_BB(mp, 1), 0, | |
174 | &xfs_agi_buf_ops); | |
175 | if (!bp) { | |
176 | error = -ENOMEM; | |
177 | goto out_error; | |
178 | } | |
179 | ||
180 | agi = XFS_BUF_TO_AGI(bp); | |
181 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); | |
182 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
183 | agi->agi_seqno = cpu_to_be32(agno); | |
184 | agi->agi_length = cpu_to_be32(agsize); | |
185 | agi->agi_count = 0; | |
186 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); | |
187 | agi->agi_level = cpu_to_be32(1); | |
188 | agi->agi_freecount = 0; | |
189 | agi->agi_newino = cpu_to_be32(NULLAGINO); | |
190 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
191 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
192 | uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid); | |
193 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { | |
194 | agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp)); | |
195 | agi->agi_free_level = cpu_to_be32(1); | |
196 | } | |
197 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) | |
198 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); | |
199 | ||
9aebe805 | 200 | xfs_buf_delwri_queue(bp, buffer_list); |
cce77bcf | 201 | xfs_buf_relse(bp); |
cce77bcf DC |
202 | |
203 | /* | |
204 | * BNO btree root block | |
205 | */ | |
206 | bp = xfs_growfs_get_hdr_buf(mp, | |
207 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
208 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
209 | &xfs_allocbt_buf_ops); | |
210 | ||
211 | if (!bp) { | |
212 | error = -ENOMEM; | |
213 | goto out_error; | |
214 | } | |
215 | ||
216 | xfs_btree_init_block(mp, bp, XFS_BTNUM_BNO, 0, 1, agno, 0); | |
217 | ||
218 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); | |
219 | arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); | |
220 | arec->ar_blockcount = cpu_to_be32( | |
221 | agsize - be32_to_cpu(arec->ar_startblock)); | |
222 | ||
9aebe805 | 223 | xfs_buf_delwri_queue(bp, buffer_list); |
cce77bcf | 224 | xfs_buf_relse(bp); |
cce77bcf DC |
225 | |
226 | /* | |
227 | * CNT btree root block | |
228 | */ | |
229 | bp = xfs_growfs_get_hdr_buf(mp, | |
230 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
231 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
232 | &xfs_allocbt_buf_ops); | |
233 | if (!bp) { | |
234 | error = -ENOMEM; | |
235 | goto out_error; | |
236 | } | |
237 | ||
238 | xfs_btree_init_block(mp, bp, XFS_BTNUM_CNT, 0, 1, agno, 0); | |
239 | ||
240 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); | |
241 | arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); | |
242 | arec->ar_blockcount = cpu_to_be32( | |
243 | agsize - be32_to_cpu(arec->ar_startblock)); | |
244 | *nfree += be32_to_cpu(arec->ar_blockcount); | |
245 | ||
9aebe805 | 246 | xfs_buf_delwri_queue(bp, buffer_list); |
cce77bcf | 247 | xfs_buf_relse(bp); |
cce77bcf DC |
248 | |
249 | /* RMAP btree root block */ | |
250 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { | |
251 | struct xfs_rmap_rec *rrec; | |
252 | struct xfs_btree_block *block; | |
253 | ||
254 | bp = xfs_growfs_get_hdr_buf(mp, | |
255 | XFS_AGB_TO_DADDR(mp, agno, XFS_RMAP_BLOCK(mp)), | |
256 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
257 | &xfs_rmapbt_buf_ops); | |
258 | if (!bp) { | |
259 | error = -ENOMEM; | |
260 | goto out_error; | |
261 | } | |
262 | ||
263 | xfs_btree_init_block(mp, bp, XFS_BTNUM_RMAP, 0, 0, | |
264 | agno, 0); | |
265 | block = XFS_BUF_TO_BLOCK(bp); | |
266 | ||
267 | ||
268 | /* | |
269 | * mark the AG header regions as static metadata The BNO | |
270 | * btree block is the first block after the headers, so | |
271 | * it's location defines the size of region the static | |
272 | * metadata consumes. | |
273 | * | |
274 | * Note: unlike mkfs, we never have to account for log | |
275 | * space when growing the data regions | |
276 | */ | |
277 | rrec = XFS_RMAP_REC_ADDR(block, 1); | |
278 | rrec->rm_startblock = 0; | |
279 | rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
280 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS); | |
281 | rrec->rm_offset = 0; | |
282 | be16_add_cpu(&block->bb_numrecs, 1); | |
283 | ||
284 | /* account freespace btree root blocks */ | |
285 | rrec = XFS_RMAP_REC_ADDR(block, 2); | |
286 | rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
287 | rrec->rm_blockcount = cpu_to_be32(2); | |
288 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); | |
289 | rrec->rm_offset = 0; | |
290 | be16_add_cpu(&block->bb_numrecs, 1); | |
291 | ||
292 | /* account inode btree root blocks */ | |
293 | rrec = XFS_RMAP_REC_ADDR(block, 3); | |
294 | rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp)); | |
295 | rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) - | |
296 | XFS_IBT_BLOCK(mp)); | |
297 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT); | |
298 | rrec->rm_offset = 0; | |
299 | be16_add_cpu(&block->bb_numrecs, 1); | |
300 | ||
301 | /* account for rmap btree root */ | |
302 | rrec = XFS_RMAP_REC_ADDR(block, 4); | |
303 | rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp)); | |
304 | rrec->rm_blockcount = cpu_to_be32(1); | |
305 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); | |
306 | rrec->rm_offset = 0; | |
307 | be16_add_cpu(&block->bb_numrecs, 1); | |
308 | ||
309 | /* account for refc btree root */ | |
310 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { | |
311 | rrec = XFS_RMAP_REC_ADDR(block, 5); | |
312 | rrec->rm_startblock = cpu_to_be32(xfs_refc_block(mp)); | |
313 | rrec->rm_blockcount = cpu_to_be32(1); | |
314 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_REFC); | |
315 | rrec->rm_offset = 0; | |
316 | be16_add_cpu(&block->bb_numrecs, 1); | |
317 | } | |
318 | ||
9aebe805 | 319 | xfs_buf_delwri_queue(bp, buffer_list); |
cce77bcf | 320 | xfs_buf_relse(bp); |
cce77bcf DC |
321 | } |
322 | ||
323 | /* | |
324 | * INO btree root block | |
325 | */ | |
326 | bp = xfs_growfs_get_hdr_buf(mp, | |
327 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
328 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
329 | &xfs_inobt_buf_ops); | |
330 | if (!bp) { | |
331 | error = -ENOMEM; | |
332 | goto out_error; | |
333 | } | |
334 | ||
335 | xfs_btree_init_block(mp, bp, XFS_BTNUM_INO , 0, 0, agno, 0); | |
9aebe805 | 336 | xfs_buf_delwri_queue(bp, buffer_list); |
cce77bcf | 337 | xfs_buf_relse(bp); |
cce77bcf DC |
338 | |
339 | /* | |
340 | * FINO btree root block | |
341 | */ | |
342 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { | |
343 | bp = xfs_growfs_get_hdr_buf(mp, | |
344 | XFS_AGB_TO_DADDR(mp, agno, XFS_FIBT_BLOCK(mp)), | |
345 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
346 | &xfs_inobt_buf_ops); | |
347 | if (!bp) { | |
348 | error = -ENOMEM; | |
349 | goto out_error; | |
350 | } | |
351 | ||
9aebe805 DC |
352 | xfs_btree_init_block(mp, bp, XFS_BTNUM_FINO, 0, 0, agno, 0); |
353 | xfs_buf_delwri_queue(bp, buffer_list); | |
cce77bcf | 354 | xfs_buf_relse(bp); |
cce77bcf DC |
355 | } |
356 | ||
357 | /* | |
358 | * refcount btree root block | |
359 | */ | |
360 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { | |
361 | bp = xfs_growfs_get_hdr_buf(mp, | |
362 | XFS_AGB_TO_DADDR(mp, agno, xfs_refc_block(mp)), | |
363 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
364 | &xfs_refcountbt_buf_ops); | |
365 | if (!bp) { | |
366 | error = -ENOMEM; | |
367 | goto out_error; | |
368 | } | |
369 | ||
9aebe805 DC |
370 | xfs_btree_init_block(mp, bp, XFS_BTNUM_REFC, 0, 0, agno, 0); |
371 | xfs_buf_delwri_queue(bp, buffer_list); | |
cce77bcf | 372 | xfs_buf_relse(bp); |
cce77bcf DC |
373 | } |
374 | ||
375 | out_error: | |
376 | return error; | |
377 | } | |
378 | ||
1da177e4 LT |
379 | static int |
380 | xfs_growfs_data_private( | |
381 | xfs_mount_t *mp, /* mount point for filesystem */ | |
382 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
383 | { | |
384 | xfs_agf_t *agf; | |
385 | xfs_agi_t *agi; | |
386 | xfs_agnumber_t agno; | |
387 | xfs_extlen_t agsize; | |
1da177e4 | 388 | xfs_buf_t *bp; |
1da177e4 | 389 | int dpct; |
59e5a0e8 | 390 | int error, saved_error = 0; |
1da177e4 LT |
391 | xfs_agnumber_t nagcount; |
392 | xfs_agnumber_t nagimax = 0; | |
393 | xfs_rfsblock_t nb, nb_mod; | |
394 | xfs_rfsblock_t new; | |
395 | xfs_rfsblock_t nfree; | |
396 | xfs_agnumber_t oagcount; | |
397 | int pct; | |
1da177e4 | 398 | xfs_trans_t *tp; |
9aebe805 | 399 | LIST_HEAD (buffer_list); |
1da177e4 LT |
400 | |
401 | nb = in->newblocks; | |
402 | pct = in->imaxpct; | |
403 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
2451337d | 404 | return -EINVAL; |
4cc929ee NS |
405 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
406 | return error; | |
1da177e4 | 407 | dpct = pct - mp->m_sb.sb_imax_pct; |
ba372674 | 408 | error = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 409 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
ba372674 DC |
410 | XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL); |
411 | if (error) | |
eab4e633 | 412 | return error; |
1da177e4 LT |
413 | xfs_buf_relse(bp); |
414 | ||
415 | new = nb; /* use new as a temporary here */ | |
416 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
417 | nagcount = new + (nb_mod != 0); | |
418 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
419 | nagcount--; | |
e6da7c9f | 420 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 | 421 | if (nb < mp->m_sb.sb_dblocks) |
2451337d | 422 | return -EINVAL; |
1da177e4 LT |
423 | } |
424 | new = nb - mp->m_sb.sb_dblocks; | |
425 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 426 | |
1c1c6ebc DC |
427 | /* allocate the new per-ag structures */ |
428 | if (nagcount > oagcount) { | |
429 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
430 | if (error) | |
431 | return error; | |
1da177e4 | 432 | } |
1c1c6ebc | 433 | |
253f4911 CH |
434 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_growdata, |
435 | XFS_GROWFS_SPACE_RES(mp), 0, XFS_TRANS_RESERVE, &tp); | |
436 | if (error) | |
1da177e4 | 437 | return error; |
1da177e4 | 438 | |
1c1c6ebc | 439 | /* |
9aebe805 DC |
440 | * Write new AG headers to disk. Non-transactional, but need to be |
441 | * written and completed prior to the growfs transaction being logged. | |
442 | * To do this, we use a delayed write buffer list and wait for | |
443 | * submission and IO completion of the list as a whole. This allows the | |
444 | * IO subsystem to merge all the AG headers in a single AG into a single | |
445 | * IO and hide most of the latency of the IO from us. | |
446 | * | |
447 | * This also means that if we get an error whilst building the buffer | |
448 | * list to write, we can cancel the entire list without having written | |
449 | * anything. | |
1c1c6ebc | 450 | */ |
1da177e4 LT |
451 | nfree = 0; |
452 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
f94c4457 | 453 | |
1da177e4 | 454 | if (agno == nagcount - 1) |
cce77bcf | 455 | agsize = nb - |
1da177e4 LT |
456 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); |
457 | else | |
458 | agsize = mp->m_sb.sb_agblocks; | |
b64f3a39 | 459 | |
9aebe805 DC |
460 | error = xfs_grow_ag_headers(mp, agno, agsize, &nfree, |
461 | &buffer_list); | |
462 | if (error) { | |
463 | xfs_buf_delwri_cancel(&buffer_list); | |
1da177e4 | 464 | goto error0; |
9aebe805 | 465 | } |
1da177e4 | 466 | } |
9aebe805 DC |
467 | error = xfs_buf_delwri_submit(&buffer_list); |
468 | if (error) | |
469 | goto error0; | |
470 | ||
1da177e4 | 471 | xfs_trans_agblocks_delta(tp, nfree); |
cce77bcf | 472 | |
1da177e4 LT |
473 | /* |
474 | * There are new blocks in the old last a.g. | |
475 | */ | |
476 | if (new) { | |
340785cc DW |
477 | struct xfs_owner_info oinfo; |
478 | ||
1da177e4 LT |
479 | /* |
480 | * Change the agi length. | |
481 | */ | |
482 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
483 | if (error) { | |
484 | goto error0; | |
485 | } | |
486 | ASSERT(bp); | |
487 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 488 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 489 | ASSERT(nagcount == oagcount || |
16259e7d | 490 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
491 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
492 | /* | |
493 | * Change agf length. | |
494 | */ | |
495 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
496 | if (error) { | |
497 | goto error0; | |
498 | } | |
499 | ASSERT(bp); | |
500 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 501 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
502 | ASSERT(be32_to_cpu(agf->agf_length) == |
503 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 504 | |
0164af51 | 505 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
340785cc | 506 | |
1da177e4 LT |
507 | /* |
508 | * Free the new space. | |
340785cc DW |
509 | * |
510 | * XFS_RMAP_OWN_NULL is used here to tell the rmap btree that | |
511 | * this doesn't actually exist in the rmap btree. | |
1da177e4 | 512 | */ |
340785cc | 513 | xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_NULL); |
33df3a9c DW |
514 | error = xfs_rmap_free(tp, bp, agno, |
515 | be32_to_cpu(agf->agf_length) - new, | |
516 | new, &oinfo); | |
517 | if (error) | |
518 | goto error0; | |
340785cc DW |
519 | error = xfs_free_extent(tp, |
520 | XFS_AGB_TO_FSB(mp, agno, | |
521 | be32_to_cpu(agf->agf_length) - new), | |
3fd129b6 | 522 | new, &oinfo, XFS_AG_RESV_NONE); |
340785cc | 523 | if (error) |
1da177e4 | 524 | goto error0; |
1da177e4 | 525 | } |
1c1c6ebc DC |
526 | |
527 | /* | |
528 | * Update changed superblock fields transactionally. These are not | |
529 | * seen by the rest of the world until the transaction commit applies | |
530 | * them atomically to the superblock. | |
531 | */ | |
1da177e4 LT |
532 | if (nagcount > oagcount) |
533 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
534 | if (nb > mp->m_sb.sb_dblocks) | |
535 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
536 | nb - mp->m_sb.sb_dblocks); | |
537 | if (nfree) | |
538 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
539 | if (dpct) | |
540 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
f8079b85 | 541 | xfs_trans_set_sync(tp); |
70393313 | 542 | error = xfs_trans_commit(tp); |
1c1c6ebc | 543 | if (error) |
1da177e4 | 544 | return error; |
1c1c6ebc | 545 | |
1da177e4 LT |
546 | /* New allocation groups fully initialized, so update mount struct */ |
547 | if (nagimax) | |
548 | mp->m_maxagi = nagimax; | |
549 | if (mp->m_sb.sb_imax_pct) { | |
c8ce540d | 550 | uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; |
1da177e4 LT |
551 | do_div(icount, 100); |
552 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
553 | } else | |
554 | mp->m_maxicount = 0; | |
055388a3 | 555 | xfs_set_low_space_thresholds(mp); |
52548852 | 556 | mp->m_alloc_set_aside = xfs_alloc_set_aside(mp); |
1c1c6ebc | 557 | |
20e73b00 DW |
558 | /* |
559 | * If we expanded the last AG, free the per-AG reservation | |
560 | * so we can reinitialize it with the new size. | |
561 | */ | |
562 | if (new) { | |
563 | struct xfs_perag *pag; | |
564 | ||
565 | pag = xfs_perag_get(mp, agno); | |
566 | error = xfs_ag_resv_free(pag); | |
567 | xfs_perag_put(pag); | |
568 | if (error) | |
569 | goto out; | |
570 | } | |
571 | ||
84d69619 DW |
572 | /* Reserve AG metadata blocks. */ |
573 | error = xfs_fs_reserve_ag_blocks(mp); | |
574 | if (error && error != -ENOSPC) | |
575 | goto out; | |
576 | ||
1c1c6ebc | 577 | /* update secondary superblocks. */ |
1da177e4 | 578 | for (agno = 1; agno < nagcount; agno++) { |
1375cb65 DC |
579 | error = 0; |
580 | /* | |
581 | * new secondary superblocks need to be zeroed, not read from | |
582 | * disk as the contents of the new area we are growing into is | |
583 | * completely unknown. | |
584 | */ | |
585 | if (agno < oagcount) { | |
586 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1da177e4 | 587 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
98021821 | 588 | XFS_FSS_TO_BB(mp, 1), 0, &bp, |
1813dd64 | 589 | &xfs_sb_buf_ops); |
1375cb65 DC |
590 | } else { |
591 | bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, | |
592 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
593 | XFS_FSS_TO_BB(mp, 1), 0); | |
b0f539de | 594 | if (bp) { |
1813dd64 | 595 | bp->b_ops = &xfs_sb_buf_ops; |
1375cb65 | 596 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); |
b0f539de | 597 | } else |
2451337d | 598 | error = -ENOMEM; |
1375cb65 DC |
599 | } |
600 | ||
59e5a0e8 ES |
601 | /* |
602 | * If we get an error reading or writing alternate superblocks, | |
603 | * continue. xfs_repair chooses the "best" superblock based | |
604 | * on most matches; if we break early, we'll leave more | |
605 | * superblocks un-updated than updated, and xfs_repair may | |
606 | * pick them over the properly-updated primary. | |
607 | */ | |
1da177e4 | 608 | if (error) { |
53487786 DC |
609 | xfs_warn(mp, |
610 | "error %d reading secondary superblock for ag %d", | |
1da177e4 | 611 | error, agno); |
59e5a0e8 ES |
612 | saved_error = error; |
613 | continue; | |
1da177e4 | 614 | } |
4d11a402 | 615 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); |
98021821 | 616 | |
c2b006c1 CH |
617 | error = xfs_bwrite(bp); |
618 | xfs_buf_relse(bp); | |
619 | if (error) { | |
53487786 | 620 | xfs_warn(mp, |
1da177e4 LT |
621 | "write error %d updating secondary superblock for ag %d", |
622 | error, agno); | |
59e5a0e8 ES |
623 | saved_error = error; |
624 | continue; | |
1da177e4 LT |
625 | } |
626 | } | |
84d69619 DW |
627 | |
628 | out: | |
59e5a0e8 | 629 | return saved_error ? saved_error : error; |
1da177e4 LT |
630 | |
631 | error0: | |
4906e215 | 632 | xfs_trans_cancel(tp); |
1da177e4 LT |
633 | return error; |
634 | } | |
635 | ||
636 | static int | |
637 | xfs_growfs_log_private( | |
638 | xfs_mount_t *mp, /* mount point for filesystem */ | |
639 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
640 | { | |
641 | xfs_extlen_t nb; | |
642 | ||
643 | nb = in->newblocks; | |
644 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
2451337d | 645 | return -EINVAL; |
1da177e4 LT |
646 | if (nb == mp->m_sb.sb_logblocks && |
647 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
2451337d | 648 | return -EINVAL; |
1da177e4 LT |
649 | /* |
650 | * Moving the log is hard, need new interfaces to sync | |
651 | * the log first, hold off all activity while moving it. | |
652 | * Can have shorter or longer log in the same space, | |
653 | * or transform internal to external log or vice versa. | |
654 | */ | |
2451337d | 655 | return -ENOSYS; |
1da177e4 LT |
656 | } |
657 | ||
658 | /* | |
659 | * protected versions of growfs function acquire and release locks on the mount | |
660 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
661 | * XFS_IOC_FSGROWFSRT | |
662 | */ | |
663 | ||
664 | ||
665 | int | |
666 | xfs_growfs_data( | |
667 | xfs_mount_t *mp, | |
668 | xfs_growfs_data_t *in) | |
669 | { | |
670 | int error; | |
743bb465 | 671 | |
672 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 673 | return -EPERM; |
cc92e7ac | 674 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 675 | return -EWOULDBLOCK; |
1da177e4 | 676 | error = xfs_growfs_data_private(mp, in); |
52785112 CH |
677 | /* |
678 | * Increment the generation unconditionally, the error could be from | |
679 | * updating the secondary superblocks, in which case the new size | |
680 | * is live already. | |
681 | */ | |
682 | mp->m_generation++; | |
cc92e7ac | 683 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
684 | return error; |
685 | } | |
686 | ||
687 | int | |
688 | xfs_growfs_log( | |
689 | xfs_mount_t *mp, | |
690 | xfs_growfs_log_t *in) | |
691 | { | |
692 | int error; | |
743bb465 | 693 | |
694 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 695 | return -EPERM; |
cc92e7ac | 696 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 697 | return -EWOULDBLOCK; |
1da177e4 | 698 | error = xfs_growfs_log_private(mp, in); |
cc92e7ac | 699 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
700 | return error; |
701 | } | |
702 | ||
703 | /* | |
704 | * exported through ioctl XFS_IOC_FSCOUNTS | |
705 | */ | |
706 | ||
707 | int | |
708 | xfs_fs_counts( | |
709 | xfs_mount_t *mp, | |
710 | xfs_fsop_counts_t *cnt) | |
711 | { | |
501ab323 | 712 | cnt->allocino = percpu_counter_read_positive(&mp->m_icount); |
e88b64ea | 713 | cnt->freeino = percpu_counter_read_positive(&mp->m_ifree); |
0d485ada | 714 | cnt->freedata = percpu_counter_read_positive(&mp->m_fdblocks) - |
52548852 | 715 | mp->m_alloc_set_aside; |
501ab323 | 716 | |
3685c2a1 | 717 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 718 | cnt->freertx = mp->m_sb.sb_frextents; |
3685c2a1 | 719 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
720 | return 0; |
721 | } | |
722 | ||
723 | /* | |
724 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
725 | * | |
726 | * xfs_reserve_blocks is called to set m_resblks | |
727 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 728 | * is kept in m_resblks_avail. |
1da177e4 LT |
729 | * |
730 | * Reserve the requested number of blocks if available. Otherwise return | |
731 | * as many as possible to satisfy the request. The actual number | |
732 | * reserved are returned in outval | |
733 | * | |
734 | * A null inval pointer indicates that only the current reserved blocks | |
735 | * available should be returned no settings are changed. | |
736 | */ | |
737 | ||
738 | int | |
739 | xfs_reserve_blocks( | |
740 | xfs_mount_t *mp, | |
c8ce540d | 741 | uint64_t *inval, |
1da177e4 LT |
742 | xfs_fsop_resblks_t *outval) |
743 | { | |
c8ce540d DW |
744 | int64_t lcounter, delta; |
745 | int64_t fdblks_delta = 0; | |
746 | uint64_t request; | |
747 | int64_t free; | |
408fd484 | 748 | int error = 0; |
1da177e4 LT |
749 | |
750 | /* If inval is null, report current values and return */ | |
c8ce540d | 751 | if (inval == (uint64_t *)NULL) { |
84e1e99f | 752 | if (!outval) |
2451337d | 753 | return -EINVAL; |
1da177e4 LT |
754 | outval->resblks = mp->m_resblks; |
755 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 756 | return 0; |
1da177e4 LT |
757 | } |
758 | ||
759 | request = *inval; | |
dbcabad1 DC |
760 | |
761 | /* | |
408fd484 BF |
762 | * With per-cpu counters, this becomes an interesting problem. we need |
763 | * to work out if we are freeing or allocation blocks first, then we can | |
764 | * do the modification as necessary. | |
dbcabad1 | 765 | * |
408fd484 BF |
766 | * We do this under the m_sb_lock so that if we are near ENOSPC, we will |
767 | * hold out any changes while we work out what to do. This means that | |
768 | * the amount of free space can change while we do this, so we need to | |
769 | * retry if we end up trying to reserve more space than is available. | |
dbcabad1 | 770 | */ |
3685c2a1 | 771 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
772 | |
773 | /* | |
774 | * If our previous reservation was larger than the current value, | |
408fd484 BF |
775 | * then move any unused blocks back to the free pool. Modify the resblks |
776 | * counters directly since we shouldn't have any problems unreserving | |
777 | * space. | |
1da177e4 | 778 | */ |
1da177e4 LT |
779 | if (mp->m_resblks > request) { |
780 | lcounter = mp->m_resblks_avail - request; | |
781 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 782 | fdblks_delta = lcounter; |
1da177e4 LT |
783 | mp->m_resblks_avail -= lcounter; |
784 | } | |
785 | mp->m_resblks = request; | |
408fd484 BF |
786 | if (fdblks_delta) { |
787 | spin_unlock(&mp->m_sb_lock); | |
788 | error = xfs_mod_fdblocks(mp, fdblks_delta, 0); | |
789 | spin_lock(&mp->m_sb_lock); | |
790 | } | |
791 | ||
792 | goto out; | |
793 | } | |
4be536de | 794 | |
408fd484 BF |
795 | /* |
796 | * If the request is larger than the current reservation, reserve the | |
797 | * blocks before we update the reserve counters. Sample m_fdblocks and | |
798 | * perform a partial reservation if the request exceeds free space. | |
799 | */ | |
800 | error = -ENOSPC; | |
801 | do { | |
0d485ada | 802 | free = percpu_counter_sum(&mp->m_fdblocks) - |
52548852 | 803 | mp->m_alloc_set_aside; |
dbcabad1 | 804 | if (!free) |
408fd484 | 805 | break; |
dbcabad1 | 806 | |
1da177e4 | 807 | delta = request - mp->m_resblks; |
4be536de | 808 | lcounter = free - delta; |
408fd484 | 809 | if (lcounter < 0) |
1da177e4 | 810 | /* We can't satisfy the request, just get what we can */ |
408fd484 BF |
811 | fdblks_delta = free; |
812 | else | |
813 | fdblks_delta = delta; | |
dbcabad1 | 814 | |
dbcabad1 | 815 | /* |
408fd484 BF |
816 | * We'll either succeed in getting space from the free block |
817 | * count or we'll get an ENOSPC. If we get a ENOSPC, it means | |
818 | * things changed while we were calculating fdblks_delta and so | |
819 | * we should try again to see if there is anything left to | |
820 | * reserve. | |
dbcabad1 DC |
821 | * |
822 | * Don't set the reserved flag here - we don't want to reserve | |
823 | * the extra reserve blocks from the reserve..... | |
824 | */ | |
408fd484 BF |
825 | spin_unlock(&mp->m_sb_lock); |
826 | error = xfs_mod_fdblocks(mp, -fdblks_delta, 0); | |
827 | spin_lock(&mp->m_sb_lock); | |
828 | } while (error == -ENOSPC); | |
829 | ||
830 | /* | |
831 | * Update the reserve counters if blocks have been successfully | |
832 | * allocated. | |
833 | */ | |
834 | if (!error && fdblks_delta) { | |
835 | mp->m_resblks += fdblks_delta; | |
836 | mp->m_resblks_avail += fdblks_delta; | |
dbcabad1 | 837 | } |
408fd484 BF |
838 | |
839 | out: | |
840 | if (outval) { | |
841 | outval->resblks = mp->m_resblks; | |
842 | outval->resblks_avail = mp->m_resblks_avail; | |
843 | } | |
844 | ||
845 | spin_unlock(&mp->m_sb_lock); | |
846 | return error; | |
1da177e4 LT |
847 | } |
848 | ||
1da177e4 LT |
849 | int |
850 | xfs_fs_goingdown( | |
851 | xfs_mount_t *mp, | |
c8ce540d | 852 | uint32_t inflags) |
1da177e4 LT |
853 | { |
854 | switch (inflags) { | |
855 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 856 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 857 | |
f33c6797 | 858 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 859 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
860 | thaw_bdev(sb->s_bdev, sb); |
861 | } | |
189f4bf2 | 862 | |
1da177e4 LT |
863 | break; |
864 | } | |
865 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 866 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
867 | break; |
868 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
869 | xfs_force_shutdown(mp, |
870 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
871 | break; |
872 | default: | |
2451337d | 873 | return -EINVAL; |
1da177e4 LT |
874 | } |
875 | ||
876 | return 0; | |
877 | } | |
2af51f3a DC |
878 | |
879 | /* | |
880 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
881 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
882 | * that absolutely nothing persistent happens to this filesystem after this | |
883 | * point. | |
884 | */ | |
885 | void | |
886 | xfs_do_force_shutdown( | |
887 | xfs_mount_t *mp, | |
888 | int flags, | |
889 | char *fname, | |
890 | int lnnum) | |
891 | { | |
892 | int logerror; | |
893 | ||
894 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
895 | ||
896 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
897 | xfs_notice(mp, | |
c9690043 | 898 | "%s(0x%x) called from line %d of file %s. Return address = "PTR_FMT, |
2af51f3a DC |
899 | __func__, flags, lnnum, fname, __return_address); |
900 | } | |
901 | /* | |
902 | * No need to duplicate efforts. | |
903 | */ | |
904 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
905 | return; | |
906 | ||
907 | /* | |
908 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
909 | * queue up anybody new on the log reservations, and wakes up | |
910 | * everybody who's sleeping on log reservations to tell them | |
911 | * the bad news. | |
912 | */ | |
913 | if (xfs_log_force_umount(mp, logerror)) | |
914 | return; | |
915 | ||
916 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
917 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
918 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
919 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
920 | xfs_stack_trace(); | |
921 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
922 | if (logerror) { | |
923 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
924 | "Log I/O Error Detected. Shutting down filesystem"); | |
925 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
926 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
927 | "All device paths lost. Shutting down filesystem"); | |
928 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
929 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
930 | "I/O Error Detected. Shutting down filesystem"); | |
931 | } | |
932 | } | |
933 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
934 | xfs_alert(mp, | |
935 | "Please umount the filesystem and rectify the problem(s)"); | |
936 | } | |
937 | } | |
84d69619 DW |
938 | |
939 | /* | |
940 | * Reserve free space for per-AG metadata. | |
941 | */ | |
942 | int | |
943 | xfs_fs_reserve_ag_blocks( | |
944 | struct xfs_mount *mp) | |
945 | { | |
946 | xfs_agnumber_t agno; | |
947 | struct xfs_perag *pag; | |
948 | int error = 0; | |
949 | int err2; | |
950 | ||
951 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
952 | pag = xfs_perag_get(mp, agno); | |
953 | err2 = xfs_ag_resv_init(pag); | |
954 | xfs_perag_put(pag); | |
955 | if (err2 && !error) | |
956 | error = err2; | |
957 | } | |
958 | ||
959 | if (error && error != -ENOSPC) { | |
960 | xfs_warn(mp, | |
961 | "Error %d reserving per-AG metadata reserve pool.", error); | |
962 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
963 | } | |
964 | ||
965 | return error; | |
966 | } | |
967 | ||
968 | /* | |
969 | * Free space reserved for per-AG metadata. | |
970 | */ | |
971 | int | |
972 | xfs_fs_unreserve_ag_blocks( | |
973 | struct xfs_mount *mp) | |
974 | { | |
975 | xfs_agnumber_t agno; | |
976 | struct xfs_perag *pag; | |
977 | int error = 0; | |
978 | int err2; | |
979 | ||
980 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
981 | pag = xfs_perag_get(mp, agno); | |
982 | err2 = xfs_ag_resv_free(pag); | |
983 | xfs_perag_put(pag); | |
984 | if (err2 && !error) | |
985 | error = err2; | |
986 | } | |
987 | ||
988 | if (error) | |
989 | xfs_warn(mp, | |
990 | "Error %d freeing per-AG metadata reserve pool.", error); | |
991 | ||
992 | return error; | |
993 | } |