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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
Nathan Scotta844f452005-11-02 14:38:42 +110019#include "xfs_fs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include "xfs_types.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include "xfs_log.h"
22#include "xfs_trans.h"
23#include "xfs_sb.h"
Nathan Scotta844f452005-11-02 14:38:42 +110024#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include "xfs_mount.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include "xfs_bmap_btree.h"
Nathan Scotta844f452005-11-02 14:38:42 +110027#include "xfs_alloc_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include "xfs_ialloc_btree.h"
Nathan Scotta844f452005-11-02 14:38:42 +110029#include "xfs_dinode.h"
30#include "xfs_inode.h"
31#include "xfs_inode_item.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include "xfs_btree.h"
33#include "xfs_error.h"
34#include "xfs_alloc.h"
35#include "xfs_ialloc.h"
36#include "xfs_fsops.h"
37#include "xfs_itable.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include "xfs_trans_space.h"
39#include "xfs_rtalloc.h"
David Chinner2a82b8b2007-07-11 11:09:12 +100040#include "xfs_filestream.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000041#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43/*
44 * File system operations
45 */
46
47int
48xfs_fs_geometry(
49 xfs_mount_t *mp,
50 xfs_fsop_geom_t *geo,
51 int new_version)
52{
Dan Rosenbergc4d0c3b2011-02-14 13:45:28 +000053
54 memset(geo, 0, sizeof(*geo));
55
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 geo->blocksize = mp->m_sb.sb_blocksize;
57 geo->rtextsize = mp->m_sb.sb_rextsize;
58 geo->agblocks = mp->m_sb.sb_agblocks;
59 geo->agcount = mp->m_sb.sb_agcount;
60 geo->logblocks = mp->m_sb.sb_logblocks;
61 geo->sectsize = mp->m_sb.sb_sectsize;
62 geo->inodesize = mp->m_sb.sb_inodesize;
63 geo->imaxpct = mp->m_sb.sb_imax_pct;
64 geo->datablocks = mp->m_sb.sb_dblocks;
65 geo->rtblocks = mp->m_sb.sb_rblocks;
66 geo->rtextents = mp->m_sb.sb_rextents;
67 geo->logstart = mp->m_sb.sb_logstart;
68 ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid));
69 memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid));
70 if (new_version >= 2) {
71 geo->sunit = mp->m_sb.sb_unit;
72 geo->swidth = mp->m_sb.sb_width;
73 }
74 if (new_version >= 3) {
75 geo->version = XFS_FSOP_GEOM_VERSION;
76 geo->flags =
Eric Sandeen62118702008-03-06 13:44:28 +110077 (xfs_sb_version_hasattr(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 XFS_FSOP_GEOM_FLAGS_ATTR : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110079 (xfs_sb_version_hasnlink(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 XFS_FSOP_GEOM_FLAGS_NLINK : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110081 (xfs_sb_version_hasquota(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 XFS_FSOP_GEOM_FLAGS_QUOTA : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110083 (xfs_sb_version_hasalign(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 XFS_FSOP_GEOM_FLAGS_IALIGN : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110085 (xfs_sb_version_hasdalign(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 XFS_FSOP_GEOM_FLAGS_DALIGN : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110087 (xfs_sb_version_hasshared(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 XFS_FSOP_GEOM_FLAGS_SHARED : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110089 (xfs_sb_version_hasextflgbit(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110091 (xfs_sb_version_hasdirv2(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110093 (xfs_sb_version_hassector(&mp->m_sb) ?
Nathan Scottd8cc8902005-11-02 10:34:53 +110094 XFS_FSOP_GEOM_FLAGS_SECTOR : 0) |
Barry Naujok189f4bf2008-05-21 16:58:55 +100095 (xfs_sb_version_hasasciici(&mp->m_sb) ?
96 XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) |
David Chinner92821e22007-05-24 15:26:31 +100097 (xfs_sb_version_haslazysbcount(&mp->m_sb) ?
98 XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) |
Eric Sandeen62118702008-03-06 13:44:28 +110099 (xfs_sb_version_hasattr2(&mp->m_sb) ?
Eric Sandeen69a58a42012-10-09 14:11:45 -0500100 XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) |
101 (xfs_sb_version_hasprojid32bit(&mp->m_sb) ?
102 XFS_FSOP_GEOM_FLAGS_PROJID32 : 0);
Eric Sandeen62118702008-03-06 13:44:28 +1100103 geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 mp->m_sb.sb_logsectsize : BBSIZE;
105 geo->rtsectsize = mp->m_sb.sb_blocksize;
106 geo->dirblocksize = mp->m_dirblksize;
107 }
108 if (new_version >= 4) {
109 geo->flags |=
Eric Sandeen62118702008-03-06 13:44:28 +1100110 (xfs_sb_version_haslogv2(&mp->m_sb) ?
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 XFS_FSOP_GEOM_FLAGS_LOGV2 : 0);
112 geo->logsunit = mp->m_sb.sb_logsunit;
113 }
114 return 0;
115}
116
Dave Chinnerfd236832012-11-12 22:53:59 +1100117static struct xfs_buf *
118xfs_growfs_get_hdr_buf(
119 struct xfs_mount *mp,
120 xfs_daddr_t blkno,
121 size_t numblks,
Dave Chinner1813dd62012-11-14 17:54:40 +1100122 int flags,
123 const struct xfs_buf_ops *ops)
Dave Chinnerfd236832012-11-12 22:53:59 +1100124{
125 struct xfs_buf *bp;
126
127 bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags);
128 if (!bp)
129 return NULL;
130
131 xfs_buf_zero(bp, 0, BBTOB(bp->b_length));
132 bp->b_bn = blkno;
133 bp->b_maps[0].bm_bn = blkno;
Dave Chinner1813dd62012-11-14 17:54:40 +1100134 bp->b_ops = ops;
Dave Chinnerfd236832012-11-12 22:53:59 +1100135
136 return bp;
137}
138
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139static int
140xfs_growfs_data_private(
141 xfs_mount_t *mp, /* mount point for filesystem */
142 xfs_growfs_data_t *in) /* growfs data input struct */
143{
144 xfs_agf_t *agf;
Dave Chinnerde497682012-11-12 22:54:00 +1100145 struct xfs_agfl *agfl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146 xfs_agi_t *agi;
147 xfs_agnumber_t agno;
148 xfs_extlen_t agsize;
149 xfs_extlen_t tmpsize;
150 xfs_alloc_rec_t *arec;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 xfs_buf_t *bp;
152 int bucket;
153 int dpct;
154 int error;
155 xfs_agnumber_t nagcount;
156 xfs_agnumber_t nagimax = 0;
157 xfs_rfsblock_t nb, nb_mod;
158 xfs_rfsblock_t new;
159 xfs_rfsblock_t nfree;
160 xfs_agnumber_t oagcount;
161 int pct;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 xfs_trans_t *tp;
163
164 nb = in->newblocks;
165 pct = in->imaxpct;
166 if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100)
167 return XFS_ERROR(EINVAL);
Nathan Scott4cc929e2007-05-14 18:24:02 +1000168 if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb)))
169 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 dpct = pct - mp->m_sb.sb_imax_pct;
Dave Chinnere70b73f2012-04-23 15:58:49 +1000171 bp = xfs_buf_read_uncached(mp->m_ddev_targp,
Dave Chinner1922c942010-09-22 10:47:20 +1000172 XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1),
Dave Chinnerc3f8fc72012-11-12 22:54:01 +1100173 XFS_FSS_TO_BB(mp, 1), 0, NULL);
Dave Chinner1922c942010-09-22 10:47:20 +1000174 if (!bp)
175 return EIO;
Dave Chinnereab4e632012-11-12 22:54:02 +1100176 if (bp->b_error) {
177 int error = bp->b_error;
178 xfs_buf_relse(bp);
179 return error;
180 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 xfs_buf_relse(bp);
182
183 new = nb; /* use new as a temporary here */
184 nb_mod = do_div(new, mp->m_sb.sb_agblocks);
185 nagcount = new + (nb_mod != 0);
186 if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) {
187 nagcount--;
Eric Sandeene6da7c92009-05-23 14:30:12 -0500188 nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 if (nb < mp->m_sb.sb_dblocks)
190 return XFS_ERROR(EINVAL);
191 }
192 new = nb - mp->m_sb.sb_dblocks;
193 oagcount = mp->m_sb.sb_agcount;
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000194
195 /* allocate the new per-ag structures */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 if (nagcount > oagcount) {
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000197 error = xfs_initialize_perag(mp, nagcount, &nagimax);
198 if (error)
199 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 }
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS);
David Chinner84e1e992007-06-18 16:50:27 +1000203 tp->t_flags |= XFS_TRANS_RESERVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp),
205 XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) {
206 xfs_trans_cancel(tp, 0);
207 return error;
208 }
209
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000210 /*
211 * Write new AG headers to disk. Non-transactional, but written
212 * synchronously so they are completed prior to the growfs transaction
213 * being logged.
214 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 nfree = 0;
216 for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) {
217 /*
Dave Chinnerde497682012-11-12 22:54:00 +1100218 * AG freespace header block
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 */
Dave Chinnerfd236832012-11-12 22:53:59 +1100220 bp = xfs_growfs_get_hdr_buf(mp,
221 XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
Dave Chinner1813dd62012-11-14 17:54:40 +1100222 XFS_FSS_TO_BB(mp, 1), 0,
223 &xfs_agf_buf_ops);
Chandra Seetharamanb5229502011-09-07 19:37:54 +0000224 if (!bp) {
225 error = ENOMEM;
226 goto error0;
227 }
Dave Chinnerfd236832012-11-12 22:53:59 +1100228
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 agf = XFS_BUF_TO_AGF(bp);
Christoph Hellwig16259e72005-11-02 15:11:25 +1100230 agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
231 agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION);
232 agf->agf_seqno = cpu_to_be32(agno);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 if (agno == nagcount - 1)
234 agsize =
235 nb -
236 (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks);
237 else
238 agsize = mp->m_sb.sb_agblocks;
Christoph Hellwig16259e72005-11-02 15:11:25 +1100239 agf->agf_length = cpu_to_be32(agsize);
240 agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp));
241 agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp));
242 agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1);
243 agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 agf->agf_flfirst = 0;
Christoph Hellwig16259e72005-11-02 15:11:25 +1100245 agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 agf->agf_flcount = 0;
247 tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp);
Christoph Hellwig16259e72005-11-02 15:11:25 +1100248 agf->agf_freeblks = cpu_to_be32(tmpsize);
249 agf->agf_longest = cpu_to_be32(tmpsize);
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000250 error = xfs_bwrite(bp);
251 xfs_buf_relse(bp);
252 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 goto error0;
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000254
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 /*
Dave Chinnerde497682012-11-12 22:54:00 +1100256 * AG freelist header block
257 */
258 bp = xfs_growfs_get_hdr_buf(mp,
259 XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)),
Dave Chinner1813dd62012-11-14 17:54:40 +1100260 XFS_FSS_TO_BB(mp, 1), 0,
261 &xfs_agfl_buf_ops);
Dave Chinnerde497682012-11-12 22:54:00 +1100262 if (!bp) {
263 error = ENOMEM;
264 goto error0;
265 }
266
267 agfl = XFS_BUF_TO_AGFL(bp);
268 for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++)
269 agfl->agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK);
270
271 error = xfs_bwrite(bp);
272 xfs_buf_relse(bp);
273 if (error)
274 goto error0;
275
276 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 * AG inode header block
278 */
Dave Chinnerfd236832012-11-12 22:53:59 +1100279 bp = xfs_growfs_get_hdr_buf(mp,
280 XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
Dave Chinner1813dd62012-11-14 17:54:40 +1100281 XFS_FSS_TO_BB(mp, 1), 0,
282 &xfs_agi_buf_ops);
Chandra Seetharamanb5229502011-09-07 19:37:54 +0000283 if (!bp) {
284 error = ENOMEM;
285 goto error0;
286 }
Dave Chinnerfd236832012-11-12 22:53:59 +1100287
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 agi = XFS_BUF_TO_AGI(bp);
Christoph Hellwig16259e72005-11-02 15:11:25 +1100289 agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
290 agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
291 agi->agi_seqno = cpu_to_be32(agno);
292 agi->agi_length = cpu_to_be32(agsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 agi->agi_count = 0;
Christoph Hellwig16259e72005-11-02 15:11:25 +1100294 agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp));
295 agi->agi_level = cpu_to_be32(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 agi->agi_freecount = 0;
Christoph Hellwig16259e72005-11-02 15:11:25 +1100297 agi->agi_newino = cpu_to_be32(NULLAGINO);
298 agi->agi_dirino = cpu_to_be32(NULLAGINO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++)
Christoph Hellwig16259e72005-11-02 15:11:25 +1100300 agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000301 error = xfs_bwrite(bp);
302 xfs_buf_relse(bp);
303 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 goto error0;
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000305
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 /*
307 * BNO btree root block
308 */
Dave Chinnerfd236832012-11-12 22:53:59 +1100309 bp = xfs_growfs_get_hdr_buf(mp,
310 XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)),
Dave Chinner1813dd62012-11-14 17:54:40 +1100311 BTOBB(mp->m_sb.sb_blocksize), 0,
312 &xfs_allocbt_buf_ops);
Dave Chinnerfd236832012-11-12 22:53:59 +1100313
Chandra Seetharamanb5229502011-09-07 19:37:54 +0000314 if (!bp) {
315 error = ENOMEM;
316 goto error0;
317 }
Dave Chinnerb64f3a32012-11-13 16:40:27 -0600318
Dave Chinnerfd236832012-11-12 22:53:59 +1100319 xfs_btree_init_block(mp, bp, XFS_ABTB_MAGIC, 0, 1, 0);
Dave Chinnerb64f3a32012-11-13 16:40:27 -0600320 arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1);
Christoph Hellwig16259e72005-11-02 15:11:25 +1100321 arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
322 arec->ar_blockcount = cpu_to_be32(
323 agsize - be32_to_cpu(arec->ar_startblock));
Dave Chinnerb64f3a32012-11-13 16:40:27 -0600324
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000325 error = xfs_bwrite(bp);
326 xfs_buf_relse(bp);
327 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 goto error0;
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 /*
331 * CNT btree root block
332 */
Dave Chinnerfd236832012-11-12 22:53:59 +1100333 bp = xfs_growfs_get_hdr_buf(mp,
334 XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)),
Dave Chinner1813dd62012-11-14 17:54:40 +1100335 BTOBB(mp->m_sb.sb_blocksize), 0,
336 &xfs_allocbt_buf_ops);
Chandra Seetharamanb5229502011-09-07 19:37:54 +0000337 if (!bp) {
338 error = ENOMEM;
339 goto error0;
340 }
Dave Chinnerb64f3a32012-11-13 16:40:27 -0600341
Dave Chinnerfd236832012-11-12 22:53:59 +1100342 xfs_btree_init_block(mp, bp, XFS_ABTC_MAGIC, 0, 1, 0);
Dave Chinnerb64f3a32012-11-13 16:40:27 -0600343 arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1);
Christoph Hellwig16259e72005-11-02 15:11:25 +1100344 arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
345 arec->ar_blockcount = cpu_to_be32(
346 agsize - be32_to_cpu(arec->ar_startblock));
347 nfree += be32_to_cpu(arec->ar_blockcount);
Dave Chinnerb64f3a32012-11-13 16:40:27 -0600348
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000349 error = xfs_bwrite(bp);
350 xfs_buf_relse(bp);
351 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 goto error0;
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000353
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 /*
355 * INO btree root block
356 */
Dave Chinnerfd236832012-11-12 22:53:59 +1100357 bp = xfs_growfs_get_hdr_buf(mp,
358 XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)),
Dave Chinner1813dd62012-11-14 17:54:40 +1100359 BTOBB(mp->m_sb.sb_blocksize), 0,
360 &xfs_inobt_buf_ops);
Chandra Seetharamanb5229502011-09-07 19:37:54 +0000361 if (!bp) {
362 error = ENOMEM;
363 goto error0;
364 }
Dave Chinnerfd236832012-11-12 22:53:59 +1100365
Dave Chinnerb64f3a32012-11-13 16:40:27 -0600366 xfs_btree_init_block(mp, bp, XFS_IBT_MAGIC, 0, 0, 0);
367
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000368 error = xfs_bwrite(bp);
369 xfs_buf_relse(bp);
370 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 goto error0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 }
373 xfs_trans_agblocks_delta(tp, nfree);
374 /*
375 * There are new blocks in the old last a.g.
376 */
377 if (new) {
378 /*
379 * Change the agi length.
380 */
381 error = xfs_ialloc_read_agi(mp, tp, agno, &bp);
382 if (error) {
383 goto error0;
384 }
385 ASSERT(bp);
386 agi = XFS_BUF_TO_AGI(bp);
Marcin Slusarz413d57c2008-02-13 15:03:29 -0800387 be32_add_cpu(&agi->agi_length, new);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 ASSERT(nagcount == oagcount ||
Christoph Hellwig16259e72005-11-02 15:11:25 +1100389 be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH);
391 /*
392 * Change agf length.
393 */
394 error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp);
395 if (error) {
396 goto error0;
397 }
398 ASSERT(bp);
399 agf = XFS_BUF_TO_AGF(bp);
Marcin Slusarz413d57c2008-02-13 15:03:29 -0800400 be32_add_cpu(&agf->agf_length, new);
Christoph Hellwig16259e72005-11-02 15:11:25 +1100401 ASSERT(be32_to_cpu(agf->agf_length) ==
402 be32_to_cpu(agi->agi_length));
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000403
Tim Shimmin0164af52007-06-18 16:50:08 +1000404 xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 /*
406 * Free the new space.
407 */
408 error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno,
Christoph Hellwig16259e72005-11-02 15:11:25 +1100409 be32_to_cpu(agf->agf_length) - new), new);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 if (error) {
411 goto error0;
412 }
413 }
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000414
415 /*
416 * Update changed superblock fields transactionally. These are not
417 * seen by the rest of the world until the transaction commit applies
418 * them atomically to the superblock.
419 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 if (nagcount > oagcount)
421 xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount);
422 if (nb > mp->m_sb.sb_dblocks)
423 xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS,
424 nb - mp->m_sb.sb_dblocks);
425 if (nfree)
426 xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree);
427 if (dpct)
428 xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct);
Eric Sandeen1c72bf92007-05-08 13:48:42 +1000429 error = xfs_trans_commit(tp, 0);
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000430 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 return error;
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000432
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 /* New allocation groups fully initialized, so update mount struct */
434 if (nagimax)
435 mp->m_maxagi = nagimax;
436 if (mp->m_sb.sb_imax_pct) {
437 __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct;
438 do_div(icount, 100);
439 mp->m_maxicount = icount << mp->m_sb.sb_inopblog;
440 } else
441 mp->m_maxicount = 0;
Dave Chinner055388a2011-01-04 11:35:03 +1100442 xfs_set_low_space_thresholds(mp);
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000443
444 /* update secondary superblocks. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 for (agno = 1; agno < nagcount; agno++) {
Dave Chinner1375cb62012-10-09 14:50:52 +1100446 error = 0;
447 /*
448 * new secondary superblocks need to be zeroed, not read from
449 * disk as the contents of the new area we are growing into is
450 * completely unknown.
451 */
452 if (agno < oagcount) {
453 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
Dave Chinner98021822012-11-12 22:54:03 +1100455 XFS_FSS_TO_BB(mp, 1), 0, &bp,
Dave Chinner1813dd62012-11-14 17:54:40 +1100456 &xfs_sb_buf_ops);
Dave Chinner1375cb62012-10-09 14:50:52 +1100457 } else {
458 bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp,
459 XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
460 XFS_FSS_TO_BB(mp, 1), 0);
Dave Chinnerb0f539d2012-11-14 17:53:49 +1100461 if (bp) {
Dave Chinner1813dd62012-11-14 17:54:40 +1100462 bp->b_ops = &xfs_sb_buf_ops;
Dave Chinner1375cb62012-10-09 14:50:52 +1100463 xfs_buf_zero(bp, 0, BBTOB(bp->b_length));
Dave Chinnerb0f539d2012-11-14 17:53:49 +1100464 } else
Dave Chinner1375cb62012-10-09 14:50:52 +1100465 error = ENOMEM;
466 }
467
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 if (error) {
Dave Chinner53487782011-03-07 10:05:35 +1100469 xfs_warn(mp,
470 "error %d reading secondary superblock for ag %d",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 error, agno);
472 break;
473 }
Christoph Hellwig2bdf7cd2007-08-28 13:58:06 +1000474 xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS);
Dave Chinner98021822012-11-12 22:54:03 +1100475
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 /*
477 * If we get an error writing out the alternate superblocks,
478 * just issue a warning and continue. The real work is
479 * already done and committed.
480 */
Christoph Hellwigc2b006c2011-08-23 08:28:07 +0000481 error = xfs_bwrite(bp);
482 xfs_buf_relse(bp);
483 if (error) {
Dave Chinner53487782011-03-07 10:05:35 +1100484 xfs_warn(mp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 "write error %d updating secondary superblock for ag %d",
486 error, agno);
487 break; /* no point in continuing */
488 }
489 }
Dave Chinner1375cb62012-10-09 14:50:52 +1100490 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491
492 error0:
493 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
494 return error;
495}
496
497static int
498xfs_growfs_log_private(
499 xfs_mount_t *mp, /* mount point for filesystem */
500 xfs_growfs_log_t *in) /* growfs log input struct */
501{
502 xfs_extlen_t nb;
503
504 nb = in->newblocks;
505 if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES))
506 return XFS_ERROR(EINVAL);
507 if (nb == mp->m_sb.sb_logblocks &&
508 in->isint == (mp->m_sb.sb_logstart != 0))
509 return XFS_ERROR(EINVAL);
510 /*
511 * Moving the log is hard, need new interfaces to sync
512 * the log first, hold off all activity while moving it.
513 * Can have shorter or longer log in the same space,
514 * or transform internal to external log or vice versa.
515 */
516 return XFS_ERROR(ENOSYS);
517}
518
519/*
520 * protected versions of growfs function acquire and release locks on the mount
521 * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG,
522 * XFS_IOC_FSGROWFSRT
523 */
524
525
526int
527xfs_growfs_data(
528 xfs_mount_t *mp,
529 xfs_growfs_data_t *in)
530{
531 int error;
sandeen@sandeen.net743bb4652008-11-25 21:20:06 -0600532
533 if (!capable(CAP_SYS_ADMIN))
534 return XFS_ERROR(EPERM);
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000535 if (!mutex_trylock(&mp->m_growlock))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 return XFS_ERROR(EWOULDBLOCK);
537 error = xfs_growfs_data_private(mp, in);
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000538 mutex_unlock(&mp->m_growlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 return error;
540}
541
542int
543xfs_growfs_log(
544 xfs_mount_t *mp,
545 xfs_growfs_log_t *in)
546{
547 int error;
sandeen@sandeen.net743bb4652008-11-25 21:20:06 -0600548
549 if (!capable(CAP_SYS_ADMIN))
550 return XFS_ERROR(EPERM);
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000551 if (!mutex_trylock(&mp->m_growlock))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 return XFS_ERROR(EWOULDBLOCK);
553 error = xfs_growfs_log_private(mp, in);
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000554 mutex_unlock(&mp->m_growlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 return error;
556}
557
558/*
559 * exported through ioctl XFS_IOC_FSCOUNTS
560 */
561
562int
563xfs_fs_counts(
564 xfs_mount_t *mp,
565 xfs_fsop_counts_t *cnt)
566{
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000567 xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT);
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000568 spin_lock(&mp->m_sb_lock);
David Chinner4be536d2006-09-07 14:26:50 +1000569 cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 cnt->freertx = mp->m_sb.sb_frextents;
571 cnt->freeino = mp->m_sb.sb_ifree;
572 cnt->allocino = mp->m_sb.sb_icount;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000573 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 return 0;
575}
576
577/*
578 * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS
579 *
580 * xfs_reserve_blocks is called to set m_resblks
581 * in the in-core mount table. The number of unused reserved blocks
Nathan Scottc41564b2006-03-29 08:55:14 +1000582 * is kept in m_resblks_avail.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 *
584 * Reserve the requested number of blocks if available. Otherwise return
585 * as many as possible to satisfy the request. The actual number
586 * reserved are returned in outval
587 *
588 * A null inval pointer indicates that only the current reserved blocks
589 * available should be returned no settings are changed.
590 */
591
592int
593xfs_reserve_blocks(
594 xfs_mount_t *mp,
595 __uint64_t *inval,
596 xfs_fsop_resblks_t *outval)
597{
David Chinnerdbcabad2007-02-10 18:36:17 +1100598 __int64_t lcounter, delta, fdblks_delta;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 __uint64_t request;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600
601 /* If inval is null, report current values and return */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 if (inval == (__uint64_t *)NULL) {
David Chinner84e1e992007-06-18 16:50:27 +1000603 if (!outval)
604 return EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 outval->resblks = mp->m_resblks;
606 outval->resblks_avail = mp->m_resblks_avail;
Jesper Juhl014c2542006-01-15 02:37:08 +0100607 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 }
609
610 request = *inval;
David Chinnerdbcabad2007-02-10 18:36:17 +1100611
612 /*
613 * With per-cpu counters, this becomes an interesting
614 * problem. we needto work out if we are freeing or allocation
615 * blocks first, then we can do the modification as necessary.
616 *
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000617 * We do this under the m_sb_lock so that if we are near
David Chinnerdbcabad2007-02-10 18:36:17 +1100618 * ENOSPC, we will hold out any changes while we work out
619 * what to do. This means that the amount of free space can
620 * change while we do this, so we need to retry if we end up
621 * trying to reserve more space than is available.
622 *
623 * We also use the xfs_mod_incore_sb() interface so that we
624 * don't have to care about whether per cpu counter are
625 * enabled, disabled or even compiled in....
626 */
627retry:
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000628 spin_lock(&mp->m_sb_lock);
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000629 xfs_icsb_sync_counters_locked(mp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630
631 /*
632 * If our previous reservation was larger than the current value,
633 * then move any unused blocks back to the free pool.
634 */
David Chinnerdbcabad2007-02-10 18:36:17 +1100635 fdblks_delta = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 if (mp->m_resblks > request) {
637 lcounter = mp->m_resblks_avail - request;
638 if (lcounter > 0) { /* release unused blocks */
David Chinnerdbcabad2007-02-10 18:36:17 +1100639 fdblks_delta = lcounter;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 mp->m_resblks_avail -= lcounter;
641 }
642 mp->m_resblks = request;
643 } else {
David Chinner4be536d2006-09-07 14:26:50 +1000644 __int64_t free;
645
646 free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
David Chinnerdbcabad2007-02-10 18:36:17 +1100647 if (!free)
648 goto out; /* ENOSPC and fdblks_delta = 0 */
649
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 delta = request - mp->m_resblks;
David Chinner4be536d2006-09-07 14:26:50 +1000651 lcounter = free - delta;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 if (lcounter < 0) {
653 /* We can't satisfy the request, just get what we can */
David Chinner4be536d2006-09-07 14:26:50 +1000654 mp->m_resblks += free;
655 mp->m_resblks_avail += free;
David Chinnerdbcabad2007-02-10 18:36:17 +1100656 fdblks_delta = -free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 } else {
David Chinnerdbcabad2007-02-10 18:36:17 +1100658 fdblks_delta = -delta;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 mp->m_resblks = request;
660 mp->m_resblks_avail += delta;
661 }
662 }
David Chinnerdbcabad2007-02-10 18:36:17 +1100663out:
David Chinner84e1e992007-06-18 16:50:27 +1000664 if (outval) {
665 outval->resblks = mp->m_resblks;
666 outval->resblks_avail = mp->m_resblks_avail;
667 }
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000668 spin_unlock(&mp->m_sb_lock);
David Chinnerdbcabad2007-02-10 18:36:17 +1100669
670 if (fdblks_delta) {
671 /*
672 * If we are putting blocks back here, m_resblks_avail is
Malcolm Parsons9da096f2009-03-29 09:55:42 +0200673 * already at its max so this will put it in the free pool.
David Chinnerdbcabad2007-02-10 18:36:17 +1100674 *
675 * If we need space, we'll either succeed in getting it
676 * from the free block count or we'll get an enospc. If
677 * we get a ENOSPC, it means things changed while we were
678 * calculating fdblks_delta and so we should try again to
679 * see if there is anything left to reserve.
680 *
681 * Don't set the reserved flag here - we don't want to reserve
682 * the extra reserve blocks from the reserve.....
683 */
684 int error;
Christoph Hellwig96540c72010-09-30 02:25:55 +0000685 error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS,
686 fdblks_delta, 0);
David Chinnerdbcabad2007-02-10 18:36:17 +1100687 if (error == ENOSPC)
688 goto retry;
689 }
Jesper Juhl014c2542006-01-15 02:37:08 +0100690 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691}
692
Dave Chinner1a387d32010-08-24 11:46:31 +1000693/*
694 * Dump a transaction into the log that contains no real change. This is needed
695 * to be able to make the log dirty or stamp the current tail LSN into the log
696 * during the covering operation.
697 *
698 * We cannot use an inode here for this - that will push dirty state back up
699 * into the VFS and then periodic inode flushing will prevent log covering from
Dave Chinnerc58efdb2011-01-04 04:49:29 +0000700 * making progress. Hence we log a field in the superblock instead and use a
701 * synchronous transaction to ensure the superblock is immediately unpinned
702 * and can be written back.
Dave Chinner1a387d32010-08-24 11:46:31 +1000703 */
Takashi Satoc4be0c12009-01-09 16:40:58 -0800704int
Nathan Scott421ad132006-06-09 17:12:46 +1000705xfs_fs_log_dummy(
Dave Chinnerc58efdb2011-01-04 04:49:29 +0000706 xfs_mount_t *mp)
Christoph Hellwige13a73f2006-01-11 15:30:08 +1100707{
Nathan Scott421ad132006-06-09 17:12:46 +1000708 xfs_trans_t *tp;
Takashi Satoc4be0c12009-01-09 16:40:58 -0800709 int error;
Christoph Hellwige13a73f2006-01-11 15:30:08 +1100710
Christoph Hellwig80641dc2009-10-19 04:00:03 +0000711 tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP);
Jeff Liu762c5852013-01-28 21:27:46 +0800712 error = xfs_trans_reserve(tp, 0, XFS_SB_LOG_RES(mp), 0, 0,
713 XFS_DEFAULT_LOG_COUNT);
Takashi Satoc4be0c12009-01-09 16:40:58 -0800714 if (error) {
Christoph Hellwige13a73f2006-01-11 15:30:08 +1100715 xfs_trans_cancel(tp, 0);
Takashi Satoc4be0c12009-01-09 16:40:58 -0800716 return error;
Christoph Hellwige13a73f2006-01-11 15:30:08 +1100717 }
718
Dave Chinner1a387d32010-08-24 11:46:31 +1000719 /* log the UUID because it is an unchanging field */
720 xfs_mod_sb(tp, XFS_SB_UUID);
Dave Chinnerc58efdb2011-01-04 04:49:29 +0000721 xfs_trans_set_sync(tp);
Dave Chinner1a387d32010-08-24 11:46:31 +1000722 return xfs_trans_commit(tp, 0);
Christoph Hellwige13a73f2006-01-11 15:30:08 +1100723}
724
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725int
726xfs_fs_goingdown(
727 xfs_mount_t *mp,
728 __uint32_t inflags)
729{
730 switch (inflags) {
731 case XFS_FSOP_GOING_FLAGS_DEFAULT: {
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000732 struct super_block *sb = freeze_bdev(mp->m_super->s_bdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733
Christoph Hellwigf33c6792005-11-25 16:41:47 +1100734 if (sb && !IS_ERR(sb)) {
Nathan Scott7d04a332006-06-09 14:58:38 +1000735 xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 thaw_bdev(sb->s_bdev, sb);
737 }
Barry Naujok189f4bf2008-05-21 16:58:55 +1000738
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 break;
740 }
741 case XFS_FSOP_GOING_FLAGS_LOGFLUSH:
Nathan Scott7d04a332006-06-09 14:58:38 +1000742 xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 break;
744 case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH:
Nathan Scott7d04a332006-06-09 14:58:38 +1000745 xfs_force_shutdown(mp,
746 SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 break;
748 default:
749 return XFS_ERROR(EINVAL);
750 }
751
752 return 0;
753}
Dave Chinner2af51f32012-04-23 15:59:03 +1000754
755/*
756 * Force a shutdown of the filesystem instantly while keeping the filesystem
757 * consistent. We don't do an unmount here; just shutdown the shop, make sure
758 * that absolutely nothing persistent happens to this filesystem after this
759 * point.
760 */
761void
762xfs_do_force_shutdown(
763 xfs_mount_t *mp,
764 int flags,
765 char *fname,
766 int lnnum)
767{
768 int logerror;
769
770 logerror = flags & SHUTDOWN_LOG_IO_ERROR;
771
772 if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
773 xfs_notice(mp,
774 "%s(0x%x) called from line %d of file %s. Return address = 0x%p",
775 __func__, flags, lnnum, fname, __return_address);
776 }
777 /*
778 * No need to duplicate efforts.
779 */
780 if (XFS_FORCED_SHUTDOWN(mp) && !logerror)
781 return;
782
783 /*
784 * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't
785 * queue up anybody new on the log reservations, and wakes up
786 * everybody who's sleeping on log reservations to tell them
787 * the bad news.
788 */
789 if (xfs_log_force_umount(mp, logerror))
790 return;
791
792 if (flags & SHUTDOWN_CORRUPT_INCORE) {
793 xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT,
794 "Corruption of in-memory data detected. Shutting down filesystem");
795 if (XFS_ERRLEVEL_HIGH <= xfs_error_level)
796 xfs_stack_trace();
797 } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
798 if (logerror) {
799 xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR,
800 "Log I/O Error Detected. Shutting down filesystem");
801 } else if (flags & SHUTDOWN_DEVICE_REQ) {
802 xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
803 "All device paths lost. Shutting down filesystem");
804 } else if (!(flags & SHUTDOWN_REMOTE_REQ)) {
805 xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
806 "I/O Error Detected. Shutting down filesystem");
807 }
808 }
809 if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
810 xfs_alert(mp,
811 "Please umount the filesystem and rectify the problem(s)");
812 }
813}