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1da177e4 | 1 | /* |
a805bad5 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 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 | */ |
0b1b213f | 18 | |
1da177e4 | 19 | #include "xfs.h" |
70a9883c | 20 | #include "xfs_shared.h" |
6ca1c906 | 21 | #include "xfs_format.h" |
239880ef DC |
22 | #include "xfs_log_format.h" |
23 | #include "xfs_trans_resv.h" | |
a844f451 | 24 | #include "xfs_inum.h" |
1da177e4 | 25 | #include "xfs_sb.h" |
a844f451 | 26 | #include "xfs_ag.h" |
1da177e4 | 27 | #include "xfs_mount.h" |
57062787 | 28 | #include "xfs_da_format.h" |
1da177e4 | 29 | #include "xfs_inode.h" |
a844f451 | 30 | #include "xfs_btree.h" |
1da177e4 | 31 | #include "xfs_bmap.h" |
a4fbe6ab | 32 | #include "xfs_alloc.h" |
1da177e4 | 33 | #include "xfs_error.h" |
9909c4aa | 34 | #include "xfs_fsops.h" |
239880ef | 35 | #include "xfs_trans.h" |
1da177e4 | 36 | #include "xfs_buf_item.h" |
239880ef | 37 | #include "xfs_log.h" |
a67d7c5f | 38 | #include "xfs_log_priv.h" |
9f8868ff | 39 | #include "xfs_da_btree.h" |
2b9ab5ab | 40 | #include "xfs_dir2.h" |
9f8868ff CH |
41 | #include "xfs_extfree_item.h" |
42 | #include "xfs_mru_cache.h" | |
43 | #include "xfs_inode_item.h" | |
6d8b79cf | 44 | #include "xfs_icache.h" |
0b1b213f | 45 | #include "xfs_trace.h" |
3ebe7d2d | 46 | #include "xfs_icreate_item.h" |
a4fbe6ab DC |
47 | #include "xfs_dinode.h" |
48 | #include "xfs_filestream.h" | |
49 | #include "xfs_quota.h" | |
65b65735 | 50 | #include "xfs_sysfs.h" |
1da177e4 LT |
51 | |
52 | #include <linux/namei.h> | |
53 | #include <linux/init.h> | |
5a0e3ad6 | 54 | #include <linux/slab.h> |
1da177e4 | 55 | #include <linux/mount.h> |
0829c360 | 56 | #include <linux/mempool.h> |
1da177e4 | 57 | #include <linux/writeback.h> |
4df08c52 | 58 | #include <linux/kthread.h> |
7dfb7103 | 59 | #include <linux/freezer.h> |
62a877e3 | 60 | #include <linux/parser.h> |
1da177e4 | 61 | |
b87221de | 62 | static const struct super_operations xfs_super_operations; |
7989cb8e | 63 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 64 | mempool_t *xfs_ioend_pool; |
65b65735 | 65 | |
e3aed1a0 | 66 | static struct kset *xfs_kset; /* top-level xfs sysfs dir */ |
65b65735 BF |
67 | #ifdef DEBUG |
68 | static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */ | |
69 | #endif | |
1da177e4 | 70 | |
a67d7c5f DC |
71 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
72 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
73 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
74 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
75 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
76 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
77 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
78 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
79 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
80 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
81 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
82 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
83 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
84 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
85 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
86 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
87 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
88 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
89 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
90 | * unwritten extent conversion */ | |
91 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
a67d7c5f | 92 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
08bf5404 CM |
93 | #define MNTOPT_32BITINODE "inode32" /* inode allocation limited to |
94 | * XFS_MAXINUMBER_32 */ | |
a67d7c5f DC |
95 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ |
96 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
97 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
98 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
99 | * in stat(). */ | |
100 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
101 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
102 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
103 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
104 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
105 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
106 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
107 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
108 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
109 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
110 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
111 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
112 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
113 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
114 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
e84661aa CH |
115 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */ |
116 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ | |
117 | #define MNTOPT_DISCARD "discard" /* Discard unused blocks */ | |
118 | #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ | |
a67d7c5f | 119 | |
62a877e3 CH |
120 | /* |
121 | * Table driven mount option parser. | |
122 | * | |
123 | * Currently only used for remount, but it will be used for mount | |
124 | * in the future, too. | |
125 | */ | |
126 | enum { | |
2ea03929 CM |
127 | Opt_barrier, |
128 | Opt_nobarrier, | |
129 | Opt_inode64, | |
130 | Opt_inode32, | |
131 | Opt_err | |
62a877e3 CH |
132 | }; |
133 | ||
a447c093 | 134 | static const match_table_t tokens = { |
62a877e3 CH |
135 | {Opt_barrier, "barrier"}, |
136 | {Opt_nobarrier, "nobarrier"}, | |
c3a58fec | 137 | {Opt_inode64, "inode64"}, |
2ea03929 | 138 | {Opt_inode32, "inode32"}, |
62a877e3 CH |
139 | {Opt_err, NULL} |
140 | }; | |
141 | ||
142 | ||
a67d7c5f | 143 | STATIC unsigned long |
a17164e5 | 144 | suffix_kstrtoint(char *s, unsigned int base, int *res) |
a67d7c5f | 145 | { |
a17164e5 | 146 | int last, shift_left_factor = 0, _res; |
a67d7c5f DC |
147 | char *value = s; |
148 | ||
149 | last = strlen(value) - 1; | |
150 | if (value[last] == 'K' || value[last] == 'k') { | |
151 | shift_left_factor = 10; | |
152 | value[last] = '\0'; | |
153 | } | |
154 | if (value[last] == 'M' || value[last] == 'm') { | |
155 | shift_left_factor = 20; | |
156 | value[last] = '\0'; | |
157 | } | |
158 | if (value[last] == 'G' || value[last] == 'g') { | |
159 | shift_left_factor = 30; | |
160 | value[last] = '\0'; | |
161 | } | |
162 | ||
a17164e5 AP |
163 | if (kstrtoint(s, base, &_res)) |
164 | return -EINVAL; | |
165 | *res = _res << shift_left_factor; | |
166 | return 0; | |
a67d7c5f DC |
167 | } |
168 | ||
9d565ffa CH |
169 | /* |
170 | * This function fills in xfs_mount_t fields based on mount args. | |
171 | * Note: the superblock has _not_ yet been read in. | |
172 | * | |
173 | * Note that this function leaks the various device name allocations on | |
174 | * failure. The caller takes care of them. | |
175 | */ | |
a67d7c5f DC |
176 | STATIC int |
177 | xfs_parseargs( | |
178 | struct xfs_mount *mp, | |
288699fe | 179 | char *options) |
a67d7c5f | 180 | { |
9d565ffa | 181 | struct super_block *sb = mp->m_super; |
a17164e5 | 182 | char *this_char, *value; |
9d565ffa CH |
183 | int dsunit = 0; |
184 | int dswidth = 0; | |
185 | int iosize = 0; | |
a5687787 | 186 | __uint8_t iosizelog = 0; |
9d565ffa | 187 | |
4f10700a DC |
188 | /* |
189 | * set up the mount name first so all the errors will refer to the | |
190 | * correct device. | |
191 | */ | |
192 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
193 | if (!mp->m_fsname) | |
2451337d | 194 | return -ENOMEM; |
4f10700a DC |
195 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; |
196 | ||
9d565ffa CH |
197 | /* |
198 | * Copy binary VFS mount flags we are interested in. | |
199 | */ | |
200 | if (sb->s_flags & MS_RDONLY) | |
201 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
202 | if (sb->s_flags & MS_DIRSYNC) | |
203 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
204 | if (sb->s_flags & MS_SYNCHRONOUS) | |
205 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
206 | ||
207 | /* | |
208 | * Set some default flags that could be cleared by the mount option | |
209 | * parsing. | |
210 | */ | |
211 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
212 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
a67d7c5f | 213 | |
9d565ffa CH |
214 | /* |
215 | * These can be overridden by the mount option parsing. | |
216 | */ | |
217 | mp->m_logbufs = -1; | |
218 | mp->m_logbsize = -1; | |
a67d7c5f DC |
219 | |
220 | if (!options) | |
221 | goto done; | |
222 | ||
a67d7c5f DC |
223 | while ((this_char = strsep(&options, ",")) != NULL) { |
224 | if (!*this_char) | |
225 | continue; | |
226 | if ((value = strchr(this_char, '=')) != NULL) | |
227 | *value++ = 0; | |
228 | ||
229 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
230 | if (!value || !*value) { | |
4f10700a | 231 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 232 | this_char); |
2451337d | 233 | return -EINVAL; |
a67d7c5f | 234 | } |
a17164e5 | 235 | if (kstrtoint(value, 10, &mp->m_logbufs)) |
2451337d | 236 | return -EINVAL; |
a67d7c5f DC |
237 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
238 | if (!value || !*value) { | |
4f10700a | 239 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 240 | this_char); |
2451337d | 241 | return -EINVAL; |
a67d7c5f | 242 | } |
a17164e5 | 243 | if (suffix_kstrtoint(value, 10, &mp->m_logbsize)) |
2451337d | 244 | return -EINVAL; |
a67d7c5f DC |
245 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
246 | if (!value || !*value) { | |
4f10700a | 247 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 248 | this_char); |
2451337d | 249 | return -EINVAL; |
a67d7c5f | 250 | } |
9d565ffa CH |
251 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
252 | if (!mp->m_logname) | |
2451337d | 253 | return -ENOMEM; |
a67d7c5f | 254 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 255 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe | 256 | this_char); |
2451337d | 257 | return -EINVAL; |
a67d7c5f DC |
258 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
259 | if (!value || !*value) { | |
4f10700a | 260 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 261 | this_char); |
2451337d | 262 | return -EINVAL; |
a67d7c5f | 263 | } |
9d565ffa CH |
264 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
265 | if (!mp->m_rtname) | |
2451337d | 266 | return -ENOMEM; |
a67d7c5f DC |
267 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
268 | if (!value || !*value) { | |
4f10700a | 269 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 270 | this_char); |
2451337d | 271 | return -EINVAL; |
a67d7c5f | 272 | } |
a17164e5 | 273 | if (kstrtoint(value, 10, &iosize)) |
2451337d | 274 | return -EINVAL; |
1ec7944b | 275 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
276 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
277 | if (!value || !*value) { | |
4f10700a | 278 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 279 | this_char); |
2451337d | 280 | return -EINVAL; |
a67d7c5f | 281 | } |
a17164e5 | 282 | if (suffix_kstrtoint(value, 10, &iosize)) |
2451337d | 283 | return -EINVAL; |
9d565ffa | 284 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
285 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
286 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
287 | mp->m_flags |= XFS_MOUNT_GRPID; | |
288 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
289 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
290 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
291 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 292 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 293 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 294 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 295 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 296 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 297 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 298 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
299 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
300 | if (!value || !*value) { | |
4f10700a | 301 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 302 | this_char); |
2451337d | 303 | return -EINVAL; |
a67d7c5f | 304 | } |
a17164e5 | 305 | if (kstrtoint(value, 10, &dsunit)) |
2451337d | 306 | return -EINVAL; |
a67d7c5f DC |
307 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { |
308 | if (!value || !*value) { | |
4f10700a | 309 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 310 | this_char); |
2451337d | 311 | return -EINVAL; |
a67d7c5f | 312 | } |
a17164e5 | 313 | if (kstrtoint(value, 10, &dswidth)) |
2451337d | 314 | return -EINVAL; |
08bf5404 CM |
315 | } else if (!strcmp(this_char, MNTOPT_32BITINODE)) { |
316 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 317 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
9d565ffa | 318 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 319 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { |
9d565ffa | 320 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 321 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 322 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 323 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 324 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 325 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 326 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 327 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 328 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 329 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 330 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 331 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 332 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 333 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 334 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 335 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
336 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
337 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 338 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 339 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 340 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
4177af3a CS |
341 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
342 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
343 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
a67d7c5f DC |
344 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
345 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
346 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
347 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
348 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
349 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
350 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
351 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
352 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
353 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
354 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa | 355 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
83e782e1 | 356 | XFS_PQUOTA_ENFD); |
a67d7c5f | 357 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa | 358 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
83e782e1 | 359 | mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
a67d7c5f DC |
360 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
361 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa | 362 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
83e782e1 | 363 | XFS_GQUOTA_ENFD); |
a67d7c5f | 364 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa | 365 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
83e782e1 | 366 | mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
71e330b5 | 367 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
93b8a585 CH |
368 | xfs_warn(mp, |
369 | "delaylog is the default now, option is deprecated."); | |
71e330b5 | 370 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
242d6219 | 371 | xfs_warn(mp, |
93b8a585 | 372 | "nodelaylog support has been removed, option is deprecated."); |
e84661aa CH |
373 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
374 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
375 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
376 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 377 | } else if (!strcmp(this_char, "ihashsize")) { |
4f10700a DC |
378 | xfs_warn(mp, |
379 | "ihashsize no longer used, option is deprecated."); | |
a67d7c5f | 380 | } else if (!strcmp(this_char, "osyncisdsync")) { |
4f10700a DC |
381 | xfs_warn(mp, |
382 | "osyncisdsync has no effect, option is deprecated."); | |
a64afb05 | 383 | } else if (!strcmp(this_char, "osyncisosync")) { |
4f10700a DC |
384 | xfs_warn(mp, |
385 | "osyncisosync has no effect, option is deprecated."); | |
a67d7c5f | 386 | } else if (!strcmp(this_char, "irixsgid")) { |
4f10700a DC |
387 | xfs_warn(mp, |
388 | "irixsgid is now a sysctl(2) variable, option is deprecated."); | |
a67d7c5f | 389 | } else { |
4f10700a | 390 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
2451337d | 391 | return -EINVAL; |
a67d7c5f DC |
392 | } |
393 | } | |
394 | ||
9d565ffa CH |
395 | /* |
396 | * no recovery flag requires a read-only mount | |
397 | */ | |
398 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
399 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 400 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
2451337d | 401 | return -EINVAL; |
a67d7c5f DC |
402 | } |
403 | ||
9d565ffa | 404 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
405 | xfs_warn(mp, |
406 | "sunit and swidth options incompatible with the noalign option"); | |
2451337d | 407 | return -EINVAL; |
a67d7c5f DC |
408 | } |
409 | ||
7d095257 CH |
410 | #ifndef CONFIG_XFS_QUOTA |
411 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 412 | xfs_warn(mp, "quota support not available in this kernel."); |
2451337d | 413 | return -EINVAL; |
7d095257 CH |
414 | } |
415 | #endif | |
416 | ||
a67d7c5f | 417 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 418 | xfs_warn(mp, "sunit and swidth must be specified together"); |
2451337d | 419 | return -EINVAL; |
a67d7c5f DC |
420 | } |
421 | ||
422 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
423 | xfs_warn(mp, |
424 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f | 425 | dswidth, dsunit); |
2451337d | 426 | return -EINVAL; |
a67d7c5f DC |
427 | } |
428 | ||
9d565ffa | 429 | done: |
39a45d84 | 430 | if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) { |
9d565ffa CH |
431 | /* |
432 | * At this point the superblock has not been read | |
433 | * in, therefore we do not know the block size. | |
434 | * Before the mount call ends we will convert | |
435 | * these to FSBs. | |
436 | */ | |
39a45d84 JL |
437 | mp->m_dalign = dsunit; |
438 | mp->m_swidth = dswidth; | |
9d565ffa CH |
439 | } |
440 | ||
441 | if (mp->m_logbufs != -1 && | |
442 | mp->m_logbufs != 0 && | |
443 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
444 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 445 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa | 446 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
2451337d | 447 | return -EINVAL; |
9d565ffa CH |
448 | } |
449 | if (mp->m_logbsize != -1 && | |
450 | mp->m_logbsize != 0 && | |
451 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
452 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
453 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
454 | xfs_warn(mp, |
455 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa | 456 | mp->m_logbsize); |
2451337d | 457 | return -EINVAL; |
9d565ffa CH |
458 | } |
459 | ||
9d565ffa CH |
460 | if (iosizelog) { |
461 | if (iosizelog > XFS_MAX_IO_LOG || | |
462 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 463 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
464 | iosizelog, XFS_MIN_IO_LOG, |
465 | XFS_MAX_IO_LOG); | |
2451337d | 466 | return -EINVAL; |
9d565ffa CH |
467 | } |
468 | ||
469 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
470 | mp->m_readio_log = iosizelog; | |
471 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
472 | } |
473 | ||
a67d7c5f DC |
474 | return 0; |
475 | } | |
476 | ||
477 | struct proc_xfs_info { | |
478 | int flag; | |
479 | char *str; | |
480 | }; | |
481 | ||
482 | STATIC int | |
483 | xfs_showargs( | |
484 | struct xfs_mount *mp, | |
485 | struct seq_file *m) | |
486 | { | |
487 | static struct proc_xfs_info xfs_info_set[] = { | |
488 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 489 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 490 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
491 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
492 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
493 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
494 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
495 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
496 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 497 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 498 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
08bf5404 | 499 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE }, |
a67d7c5f DC |
500 | { 0, NULL } |
501 | }; | |
502 | static struct proc_xfs_info xfs_info_unset[] = { | |
503 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
504 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
505 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
506 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
507 | { 0, NULL } | |
508 | }; | |
509 | struct proc_xfs_info *xfs_infop; | |
510 | ||
511 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
512 | if (mp->m_flags & xfs_infop->flag) | |
513 | seq_puts(m, xfs_infop->str); | |
514 | } | |
515 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
516 | if (!(mp->m_flags & xfs_infop->flag)) | |
517 | seq_puts(m, xfs_infop->str); | |
518 | } | |
519 | ||
520 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
521 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
522 | (int)(1 << mp->m_writeio_log) >> 10); | |
523 | ||
524 | if (mp->m_logbufs > 0) | |
525 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
526 | if (mp->m_logbsize > 0) | |
527 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
528 | ||
529 | if (mp->m_logname) | |
530 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
531 | if (mp->m_rtname) | |
532 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
533 | ||
534 | if (mp->m_dalign > 0) | |
535 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
536 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
537 | if (mp->m_swidth > 0) | |
538 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
539 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
540 | ||
541 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
542 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
543 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
544 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
545 | ||
988abe40 | 546 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
83e782e1 | 547 | if (mp->m_qflags & XFS_PQUOTA_ENFD) |
988abe40 AE |
548 | seq_puts(m, "," MNTOPT_PRJQUOTA); |
549 | else | |
550 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
d892d586 CS |
551 | } |
552 | if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
83e782e1 | 553 | if (mp->m_qflags & XFS_GQUOTA_ENFD) |
988abe40 AE |
554 | seq_puts(m, "," MNTOPT_GRPQUOTA); |
555 | else | |
556 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
557 | } | |
a67d7c5f DC |
558 | |
559 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
560 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
561 | ||
562 | return 0; | |
563 | } | |
1da177e4 LT |
564 | __uint64_t |
565 | xfs_max_file_offset( | |
566 | unsigned int blockshift) | |
567 | { | |
568 | unsigned int pagefactor = 1; | |
569 | unsigned int bitshift = BITS_PER_LONG - 1; | |
570 | ||
571 | /* Figure out maximum filesize, on Linux this can depend on | |
572 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 573 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
574 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
575 | * So, for page sized blocks (4K on 32 bit platforms), | |
576 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
577 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
578 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
579 | * Note1: get_block_t takes a long (implicit cast from above) | |
580 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
581 | * can optionally convert the [unsigned] long from above into | |
582 | * an [unsigned] long long. | |
583 | */ | |
584 | ||
585 | #if BITS_PER_LONG == 32 | |
90c699a9 | 586 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
587 | ASSERT(sizeof(sector_t) == 8); |
588 | pagefactor = PAGE_CACHE_SIZE; | |
589 | bitshift = BITS_PER_LONG; | |
590 | # else | |
591 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
592 | # endif | |
593 | #endif | |
594 | ||
595 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
596 | } | |
597 | ||
9de67c3b ES |
598 | /* |
599 | * xfs_set_inode32() and xfs_set_inode64() are passed an agcount | |
600 | * because in the growfs case, mp->m_sb.sb_agcount is not updated | |
601 | * yet to the potentially higher ag count. | |
602 | */ | |
2d2194f6 | 603 | xfs_agnumber_t |
9de67c3b | 604 | xfs_set_inode32(struct xfs_mount *mp, xfs_agnumber_t agcount) |
2d2194f6 CM |
605 | { |
606 | xfs_agnumber_t index = 0; | |
4056c1d0 | 607 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
608 | xfs_sb_t *sbp = &mp->m_sb; |
609 | xfs_agnumber_t max_metadata; | |
54aa61f8 ES |
610 | xfs_agino_t agino; |
611 | xfs_ino_t ino; | |
2d2194f6 CM |
612 | xfs_perag_t *pag; |
613 | ||
614 | /* Calculate how much should be reserved for inodes to meet | |
615 | * the max inode percentage. | |
616 | */ | |
617 | if (mp->m_maxicount) { | |
618 | __uint64_t icount; | |
619 | ||
620 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
621 | do_div(icount, 100); | |
622 | icount += sbp->sb_agblocks - 1; | |
623 | do_div(icount, sbp->sb_agblocks); | |
624 | max_metadata = icount; | |
625 | } else { | |
9de67c3b | 626 | max_metadata = agcount; |
2d2194f6 CM |
627 | } |
628 | ||
54aa61f8 ES |
629 | agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0); |
630 | ||
9de67c3b | 631 | for (index = 0; index < agcount; index++) { |
2d2194f6 | 632 | ino = XFS_AGINO_TO_INO(mp, index, agino); |
4056c1d0 | 633 | |
2d2194f6 | 634 | if (ino > XFS_MAXINUMBER_32) { |
4056c1d0 CM |
635 | pag = xfs_perag_get(mp, index); |
636 | pag->pagi_inodeok = 0; | |
637 | pag->pagf_metadata = 0; | |
638 | xfs_perag_put(pag); | |
639 | continue; | |
2d2194f6 CM |
640 | } |
641 | ||
642 | pag = xfs_perag_get(mp, index); | |
643 | pag->pagi_inodeok = 1; | |
4056c1d0 | 644 | maxagi++; |
2d2194f6 CM |
645 | if (index < max_metadata) |
646 | pag->pagf_metadata = 1; | |
647 | xfs_perag_put(pag); | |
648 | } | |
4056c1d0 CM |
649 | mp->m_flags |= (XFS_MOUNT_32BITINODES | |
650 | XFS_MOUNT_SMALL_INUMS); | |
651 | ||
652 | return maxagi; | |
2d2194f6 CM |
653 | } |
654 | ||
655 | xfs_agnumber_t | |
9de67c3b | 656 | xfs_set_inode64(struct xfs_mount *mp, xfs_agnumber_t agcount) |
2d2194f6 CM |
657 | { |
658 | xfs_agnumber_t index = 0; | |
659 | ||
9de67c3b | 660 | for (index = 0; index < agcount; index++) { |
2d2194f6 CM |
661 | struct xfs_perag *pag; |
662 | ||
663 | pag = xfs_perag_get(mp, index); | |
664 | pag->pagi_inodeok = 1; | |
665 | pag->pagf_metadata = 0; | |
666 | xfs_perag_put(pag); | |
667 | } | |
668 | ||
669 | /* There is no need for lock protection on m_flags, | |
670 | * the rw_semaphore of the VFS superblock is locked | |
671 | * during mount/umount/remount operations, so this is | |
672 | * enough to avoid concurency on the m_flags field | |
673 | */ | |
674 | mp->m_flags &= ~(XFS_MOUNT_32BITINODES | | |
675 | XFS_MOUNT_SMALL_INUMS); | |
676 | return index; | |
677 | } | |
678 | ||
3180e66d | 679 | STATIC int |
1da177e4 LT |
680 | xfs_blkdev_get( |
681 | xfs_mount_t *mp, | |
682 | const char *name, | |
683 | struct block_device **bdevp) | |
684 | { | |
685 | int error = 0; | |
686 | ||
d4d77629 TH |
687 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
688 | mp); | |
1da177e4 LT |
689 | if (IS_ERR(*bdevp)) { |
690 | error = PTR_ERR(*bdevp); | |
4f10700a | 691 | xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); |
1da177e4 LT |
692 | } |
693 | ||
2451337d | 694 | return error; |
1da177e4 LT |
695 | } |
696 | ||
3180e66d | 697 | STATIC void |
1da177e4 LT |
698 | xfs_blkdev_put( |
699 | struct block_device *bdev) | |
700 | { | |
701 | if (bdev) | |
e525fd89 | 702 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
703 | } |
704 | ||
f538d4da CH |
705 | void |
706 | xfs_blkdev_issue_flush( | |
707 | xfs_buftarg_t *buftarg) | |
708 | { | |
7582df51 | 709 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 710 | } |
1da177e4 | 711 | |
19f354d4 CH |
712 | STATIC void |
713 | xfs_close_devices( | |
714 | struct xfs_mount *mp) | |
715 | { | |
716 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 717 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 718 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 719 | xfs_blkdev_put(logdev); |
19f354d4 CH |
720 | } |
721 | if (mp->m_rtdev_targp) { | |
c032bfcf | 722 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 723 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 724 | xfs_blkdev_put(rtdev); |
19f354d4 | 725 | } |
b7963133 | 726 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
727 | } |
728 | ||
729 | /* | |
730 | * The file system configurations are: | |
731 | * (1) device (partition) with data and internal log | |
732 | * (2) logical volume with data and log subvolumes. | |
733 | * (3) logical volume with data, log, and realtime subvolumes. | |
734 | * | |
735 | * We only have to handle opening the log and realtime volumes here if | |
736 | * they are present. The data subvolume has already been opened by | |
737 | * get_sb_bdev() and is stored in sb->s_bdev. | |
738 | */ | |
739 | STATIC int | |
740 | xfs_open_devices( | |
9d565ffa | 741 | struct xfs_mount *mp) |
19f354d4 CH |
742 | { |
743 | struct block_device *ddev = mp->m_super->s_bdev; | |
744 | struct block_device *logdev = NULL, *rtdev = NULL; | |
745 | int error; | |
746 | ||
747 | /* | |
748 | * Open real time and log devices - order is important. | |
749 | */ | |
9d565ffa CH |
750 | if (mp->m_logname) { |
751 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
752 | if (error) |
753 | goto out; | |
754 | } | |
755 | ||
9d565ffa CH |
756 | if (mp->m_rtname) { |
757 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
758 | if (error) |
759 | goto out_close_logdev; | |
760 | ||
761 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
762 | xfs_warn(mp, |
763 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
2451337d | 764 | error = -EINVAL; |
19f354d4 CH |
765 | goto out_close_rtdev; |
766 | } | |
767 | } | |
768 | ||
769 | /* | |
770 | * Setup xfs_mount buffer target pointers | |
771 | */ | |
2451337d | 772 | error = -ENOMEM; |
34dcefd7 | 773 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev); |
19f354d4 CH |
774 | if (!mp->m_ddev_targp) |
775 | goto out_close_rtdev; | |
776 | ||
777 | if (rtdev) { | |
34dcefd7 | 778 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev); |
19f354d4 CH |
779 | if (!mp->m_rtdev_targp) |
780 | goto out_free_ddev_targ; | |
781 | } | |
782 | ||
783 | if (logdev && logdev != ddev) { | |
34dcefd7 | 784 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev); |
19f354d4 CH |
785 | if (!mp->m_logdev_targp) |
786 | goto out_free_rtdev_targ; | |
787 | } else { | |
788 | mp->m_logdev_targp = mp->m_ddev_targp; | |
789 | } | |
790 | ||
791 | return 0; | |
792 | ||
793 | out_free_rtdev_targ: | |
794 | if (mp->m_rtdev_targp) | |
b7963133 | 795 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 796 | out_free_ddev_targ: |
b7963133 | 797 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 | 798 | out_close_rtdev: |
d2a5e3c6 | 799 | xfs_blkdev_put(rtdev); |
19f354d4 CH |
800 | out_close_logdev: |
801 | if (logdev && logdev != ddev) | |
802 | xfs_blkdev_put(logdev); | |
803 | out: | |
804 | return error; | |
805 | } | |
806 | ||
e34b562c CH |
807 | /* |
808 | * Setup xfs_mount buffer target pointers based on superblock | |
809 | */ | |
810 | STATIC int | |
811 | xfs_setup_devices( | |
812 | struct xfs_mount *mp) | |
813 | { | |
814 | int error; | |
19f354d4 | 815 | |
a96c4151 | 816 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize); |
e34b562c CH |
817 | if (error) |
818 | return error; | |
819 | ||
820 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
821 | unsigned int log_sector_size = BBSIZE; | |
822 | ||
823 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
824 | log_sector_size = mp->m_sb.sb_logsectsize; | |
825 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
e34b562c CH |
826 | log_sector_size); |
827 | if (error) | |
828 | return error; | |
829 | } | |
830 | if (mp->m_rtdev_targp) { | |
831 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
e34b562c CH |
832 | mp->m_sb.sb_sectsize); |
833 | if (error) | |
834 | return error; | |
835 | } | |
836 | ||
837 | return 0; | |
838 | } | |
19f354d4 | 839 | |
aa6bf01d CH |
840 | STATIC int |
841 | xfs_init_mount_workqueues( | |
842 | struct xfs_mount *mp) | |
843 | { | |
78c931b8 BF |
844 | mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s", |
845 | WQ_MEM_RECLAIM|WQ_HIGHPRI|WQ_FREEZABLE, 1, | |
846 | mp->m_fsname); | |
847 | if (!mp->m_buf_workqueue) | |
848 | goto out; | |
849 | ||
aa6bf01d | 850 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", |
8018ec08 | 851 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d | 852 | if (!mp->m_data_workqueue) |
78c931b8 | 853 | goto out_destroy_buf; |
aa6bf01d CH |
854 | |
855 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", | |
8018ec08 | 856 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d CH |
857 | if (!mp->m_unwritten_workqueue) |
858 | goto out_destroy_data_iodone_queue; | |
859 | ||
4c2d542f | 860 | mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
8018ec08 | 861 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
4c2d542f DC |
862 | if (!mp->m_cil_workqueue) |
863 | goto out_destroy_unwritten; | |
5889608d DC |
864 | |
865 | mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", | |
8018ec08 | 866 | WQ_FREEZABLE, 0, mp->m_fsname); |
5889608d DC |
867 | if (!mp->m_reclaim_workqueue) |
868 | goto out_destroy_cil; | |
869 | ||
870 | mp->m_log_workqueue = alloc_workqueue("xfs-log/%s", | |
8018ec08 | 871 | WQ_FREEZABLE, 0, mp->m_fsname); |
5889608d DC |
872 | if (!mp->m_log_workqueue) |
873 | goto out_destroy_reclaim; | |
874 | ||
579b62fa | 875 | mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s", |
8018ec08 | 876 | WQ_FREEZABLE, 0, mp->m_fsname); |
579b62fa BF |
877 | if (!mp->m_eofblocks_workqueue) |
878 | goto out_destroy_log; | |
879 | ||
aa6bf01d CH |
880 | return 0; |
881 | ||
579b62fa BF |
882 | out_destroy_log: |
883 | destroy_workqueue(mp->m_log_workqueue); | |
5889608d DC |
884 | out_destroy_reclaim: |
885 | destroy_workqueue(mp->m_reclaim_workqueue); | |
886 | out_destroy_cil: | |
887 | destroy_workqueue(mp->m_cil_workqueue); | |
4c2d542f DC |
888 | out_destroy_unwritten: |
889 | destroy_workqueue(mp->m_unwritten_workqueue); | |
aa6bf01d CH |
890 | out_destroy_data_iodone_queue: |
891 | destroy_workqueue(mp->m_data_workqueue); | |
78c931b8 BF |
892 | out_destroy_buf: |
893 | destroy_workqueue(mp->m_buf_workqueue); | |
aa6bf01d CH |
894 | out: |
895 | return -ENOMEM; | |
896 | } | |
897 | ||
898 | STATIC void | |
899 | xfs_destroy_mount_workqueues( | |
900 | struct xfs_mount *mp) | |
901 | { | |
579b62fa | 902 | destroy_workqueue(mp->m_eofblocks_workqueue); |
5889608d DC |
903 | destroy_workqueue(mp->m_log_workqueue); |
904 | destroy_workqueue(mp->m_reclaim_workqueue); | |
4c2d542f | 905 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d CH |
906 | destroy_workqueue(mp->m_data_workqueue); |
907 | destroy_workqueue(mp->m_unwritten_workqueue); | |
78c931b8 | 908 | destroy_workqueue(mp->m_buf_workqueue); |
aa6bf01d CH |
909 | } |
910 | ||
9aa05000 DC |
911 | /* |
912 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
913 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
914 | * for IO to complete so that we effectively throttle multiple callers to the | |
915 | * rate at which IO is completing. | |
916 | */ | |
917 | void | |
918 | xfs_flush_inodes( | |
919 | struct xfs_mount *mp) | |
920 | { | |
921 | struct super_block *sb = mp->m_super; | |
922 | ||
923 | if (down_read_trylock(&sb->s_umount)) { | |
0dc83bd3 | 924 | sync_inodes_sb(sb); |
9aa05000 DC |
925 | up_read(&sb->s_umount); |
926 | } | |
927 | } | |
928 | ||
bf904248 | 929 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 930 | STATIC struct inode * |
a50cd269 | 931 | xfs_fs_alloc_inode( |
1da177e4 LT |
932 | struct super_block *sb) |
933 | { | |
bf904248 | 934 | BUG(); |
493dca61 | 935 | return NULL; |
1da177e4 LT |
936 | } |
937 | ||
bf904248 | 938 | /* |
99fa8cb3 DC |
939 | * Now that the generic code is guaranteed not to be accessing |
940 | * the linux inode, we can reclaim the inode. | |
bf904248 | 941 | */ |
1da177e4 | 942 | STATIC void |
a50cd269 | 943 | xfs_fs_destroy_inode( |
848ce8f7 | 944 | struct inode *inode) |
1da177e4 | 945 | { |
848ce8f7 CH |
946 | struct xfs_inode *ip = XFS_I(inode); |
947 | ||
cca28fb8 | 948 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
949 | |
950 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 | 951 | |
848ce8f7 CH |
952 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
953 | ||
954 | /* | |
955 | * We should never get here with one of the reclaim flags already set. | |
956 | */ | |
957 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
958 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
959 | ||
960 | /* | |
57817c68 DC |
961 | * We always use background reclaim here because even if the |
962 | * inode is clean, it still may be under IO and hence we have | |
963 | * to take the flush lock. The background reclaim path handles | |
964 | * this more efficiently than we can here, so simply let background | |
965 | * reclaim tear down all inodes. | |
848ce8f7 | 966 | */ |
57817c68 | 967 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
968 | } |
969 | ||
07c8f675 DC |
970 | /* |
971 | * Slab object creation initialisation for the XFS inode. | |
972 | * This covers only the idempotent fields in the XFS inode; | |
973 | * all other fields need to be initialised on allocation | |
b595076a | 974 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
975 | * fields in the xfs inode that left in the initialise state |
976 | * when freeing the inode. | |
977 | */ | |
bf904248 DC |
978 | STATIC void |
979 | xfs_fs_inode_init_once( | |
07c8f675 DC |
980 | void *inode) |
981 | { | |
982 | struct xfs_inode *ip = inode; | |
983 | ||
984 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
985 | |
986 | /* vfs inode */ | |
987 | inode_init_once(VFS_I(ip)); | |
988 | ||
989 | /* xfs inode */ | |
07c8f675 DC |
990 | atomic_set(&ip->i_pincount, 0); |
991 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
992 | |
993 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
994 | "xfsino", ip->i_ino); | |
07c8f675 DC |
995 | } |
996 | ||
1da177e4 | 997 | STATIC void |
b57922d9 | 998 | xfs_fs_evict_inode( |
1da177e4 LT |
999 | struct inode *inode) |
1000 | { | |
1543d79c | 1001 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 1002 | |
4f59af75 CH |
1003 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
1004 | ||
b57922d9 | 1005 | trace_xfs_evict_inode(ip); |
cca28fb8 | 1006 | |
91b0abe3 | 1007 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 1008 | clear_inode(inode); |
99fa8cb3 DC |
1009 | XFS_STATS_INC(vn_rele); |
1010 | XFS_STATS_INC(vn_remove); | |
99fa8cb3 DC |
1011 | |
1012 | xfs_inactive(ip); | |
56d433e4 | 1013 | } |
1da177e4 | 1014 | |
5132ba8f DC |
1015 | /* |
1016 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
1017 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
1018 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
1019 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
1020 | * we drop the final reference on. | |
1021 | */ | |
1022 | STATIC int | |
1023 | xfs_fs_drop_inode( | |
1024 | struct inode *inode) | |
1025 | { | |
1026 | struct xfs_inode *ip = XFS_I(inode); | |
1027 | ||
1028 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
1029 | } | |
1030 | ||
a738159d CH |
1031 | STATIC void |
1032 | xfs_free_fsname( | |
1033 | struct xfs_mount *mp) | |
1034 | { | |
1035 | kfree(mp->m_fsname); | |
1036 | kfree(mp->m_rtname); | |
1037 | kfree(mp->m_logname); | |
1038 | } | |
1039 | ||
1da177e4 | 1040 | STATIC void |
a50cd269 | 1041 | xfs_fs_put_super( |
1da177e4 LT |
1042 | struct super_block *sb) |
1043 | { | |
745f6919 | 1044 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1045 | |
7e18530b DC |
1046 | xfs_filestream_unmount(mp); |
1047 | xfs_unmountfs(mp); | |
1048 | ||
6203300e | 1049 | xfs_freesb(mp); |
c962fb79 | 1050 | xfs_icsb_destroy_counters(mp); |
aa6bf01d | 1051 | xfs_destroy_mount_workqueues(mp); |
19f354d4 | 1052 | xfs_close_devices(mp); |
a738159d | 1053 | xfs_free_fsname(mp); |
c962fb79 | 1054 | kfree(mp); |
1da177e4 LT |
1055 | } |
1056 | ||
1da177e4 | 1057 | STATIC int |
69961a26 | 1058 | xfs_fs_sync_fs( |
1da177e4 LT |
1059 | struct super_block *sb, |
1060 | int wait) | |
1061 | { | |
745f6919 | 1062 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1063 | |
e893bffd | 1064 | /* |
34625c66 | 1065 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1066 | */ |
34625c66 | 1067 | if (!wait) |
69961a26 | 1068 | return 0; |
69961a26 | 1069 | |
34061f5c | 1070 | xfs_log_force(mp, XFS_LOG_SYNC); |
69961a26 | 1071 | if (laptop_mode) { |
1da177e4 LT |
1072 | /* |
1073 | * The disk must be active because we're syncing. | |
f661f1e0 | 1074 | * We schedule log work now (now that the disk is |
1da177e4 LT |
1075 | * active) instead of later (when it might not be). |
1076 | */ | |
f661f1e0 | 1077 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
1078 | } |
1079 | ||
69961a26 | 1080 | return 0; |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | STATIC int | |
a50cd269 | 1084 | xfs_fs_statfs( |
726c3342 | 1085 | struct dentry *dentry, |
1da177e4 LT |
1086 | struct kstatfs *statp) |
1087 | { | |
4ca488eb CH |
1088 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1089 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1090 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1091 | __uint64_t fakeinos, id; |
1092 | xfs_extlen_t lsize; | |
2fe33661 | 1093 | __int64_t ffree; |
4ca488eb CH |
1094 | |
1095 | statp->f_type = XFS_SB_MAGIC; | |
1096 | statp->f_namelen = MAXNAMELEN - 1; | |
1097 | ||
1098 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1099 | statp->f_fsid.val[0] = (u32)id; | |
1100 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1101 | ||
d4d90b57 | 1102 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1103 | |
1104 | spin_lock(&mp->m_sb_lock); | |
1105 | statp->f_bsize = sbp->sb_blocksize; | |
1106 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1107 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1108 | statp->f_bfree = statp->f_bavail = | |
1109 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1110 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1111 | statp->f_files = |
1112 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1113 | if (mp->m_maxicount) | |
a19d9f88 CH |
1114 | statp->f_files = min_t(typeof(statp->f_files), |
1115 | statp->f_files, | |
1116 | mp->m_maxicount); | |
2fe33661 SB |
1117 | |
1118 | /* make sure statp->f_ffree does not underflow */ | |
1119 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1120 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1121 | ||
4ca488eb CH |
1122 | spin_unlock(&mp->m_sb_lock); |
1123 | ||
da5bf95e | 1124 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
83e782e1 CS |
1125 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
1126 | (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) | |
7d095257 | 1127 | xfs_qm_statvfs(ip, statp); |
4ca488eb | 1128 | return 0; |
1da177e4 LT |
1129 | } |
1130 | ||
d5db0f97 ES |
1131 | STATIC void |
1132 | xfs_save_resvblks(struct xfs_mount *mp) | |
1133 | { | |
1134 | __uint64_t resblks = 0; | |
1135 | ||
1136 | mp->m_resblks_save = mp->m_resblks; | |
1137 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1138 | } | |
1139 | ||
1140 | STATIC void | |
1141 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1142 | { | |
1143 | __uint64_t resblks; | |
1144 | ||
1145 | if (mp->m_resblks_save) { | |
1146 | resblks = mp->m_resblks_save; | |
1147 | mp->m_resblks_save = 0; | |
1148 | } else | |
1149 | resblks = xfs_default_resblks(mp); | |
1150 | ||
1151 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1152 | } | |
1153 | ||
c7eea6f7 DC |
1154 | /* |
1155 | * Trigger writeback of all the dirty metadata in the file system. | |
1156 | * | |
1157 | * This ensures that the metadata is written to their location on disk rather | |
1158 | * than just existing in transactions in the log. This means after a quiesce | |
c75921a7 DC |
1159 | * there is no log replay required to write the inodes to disk - this is the |
1160 | * primary difference between a sync and a quiesce. | |
c7eea6f7 | 1161 | * |
c75921a7 DC |
1162 | * Note: xfs_log_quiesce() stops background log work - the callers must ensure |
1163 | * it is started again when appropriate. | |
c7eea6f7 | 1164 | */ |
632b89e8 | 1165 | static void |
c7eea6f7 DC |
1166 | xfs_quiesce_attr( |
1167 | struct xfs_mount *mp) | |
1168 | { | |
1169 | int error = 0; | |
1170 | ||
1171 | /* wait for all modifications to complete */ | |
1172 | while (atomic_read(&mp->m_active_trans) > 0) | |
1173 | delay(100); | |
1174 | ||
1175 | /* force the log to unpin objects from the now complete transactions */ | |
1176 | xfs_log_force(mp, XFS_LOG_SYNC); | |
1177 | ||
1178 | /* reclaim inodes to do any IO before the freeze completes */ | |
1179 | xfs_reclaim_inodes(mp, 0); | |
1180 | xfs_reclaim_inodes(mp, SYNC_WAIT); | |
1181 | ||
c7eea6f7 DC |
1182 | /* Push the superblock and write an unmount record */ |
1183 | error = xfs_log_sbcount(mp); | |
1184 | if (error) | |
1185 | xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " | |
1186 | "Frozen image may not be consistent."); | |
c7eea6f7 | 1187 | /* |
c75921a7 DC |
1188 | * Just warn here till VFS can correctly support |
1189 | * read-only remount without racing. | |
c7eea6f7 | 1190 | */ |
c75921a7 | 1191 | WARN_ON(atomic_read(&mp->m_active_trans) != 0); |
c7eea6f7 | 1192 | |
c75921a7 | 1193 | xfs_log_quiesce(mp); |
c7eea6f7 DC |
1194 | } |
1195 | ||
1da177e4 | 1196 | STATIC int |
a50cd269 | 1197 | xfs_fs_remount( |
1da177e4 LT |
1198 | struct super_block *sb, |
1199 | int *flags, | |
1200 | char *options) | |
1201 | { | |
745f6919 | 1202 | struct xfs_mount *mp = XFS_M(sb); |
9de67c3b | 1203 | xfs_sb_t *sbp = &mp->m_sb; |
62a877e3 CH |
1204 | substring_t args[MAX_OPT_ARGS]; |
1205 | char *p; | |
7884bc86 | 1206 | int error; |
1da177e4 | 1207 | |
02b9984d | 1208 | sync_filesystem(sb); |
62a877e3 CH |
1209 | while ((p = strsep(&options, ",")) != NULL) { |
1210 | int token; | |
bdd907ba | 1211 | |
62a877e3 CH |
1212 | if (!*p) |
1213 | continue; | |
48b62a1a | 1214 | |
62a877e3 CH |
1215 | token = match_token(p, tokens, args); |
1216 | switch (token) { | |
1217 | case Opt_barrier: | |
48b62a1a | 1218 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1219 | break; |
1220 | case Opt_nobarrier: | |
48b62a1a | 1221 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 | 1222 | break; |
c3a58fec | 1223 | case Opt_inode64: |
9de67c3b | 1224 | mp->m_maxagi = xfs_set_inode64(mp, sbp->sb_agcount); |
c3a58fec | 1225 | break; |
2ea03929 | 1226 | case Opt_inode32: |
9de67c3b | 1227 | mp->m_maxagi = xfs_set_inode32(mp, sbp->sb_agcount); |
2ea03929 | 1228 | break; |
62a877e3 | 1229 | default: |
6efdf281 CH |
1230 | /* |
1231 | * Logically we would return an error here to prevent | |
1232 | * users from believing they might have changed | |
1233 | * mount options using remount which can't be changed. | |
1234 | * | |
1235 | * But unfortunately mount(8) adds all options from | |
1236 | * mtab and fstab to the mount arguments in some cases | |
1237 | * so we can't blindly reject options, but have to | |
1238 | * check for each specified option if it actually | |
1239 | * differs from the currently set option and only | |
1240 | * reject it if that's the case. | |
1241 | * | |
1242 | * Until that is implemented we return success for | |
1243 | * every remount request, and silently ignore all | |
1244 | * options that we can't actually change. | |
1245 | */ | |
1246 | #if 0 | |
4f10700a | 1247 | xfs_info(mp, |
08e96e1a | 1248 | "mount option \"%s\" not supported for remount", p); |
62a877e3 | 1249 | return -EINVAL; |
6efdf281 | 1250 | #else |
6c5e51da | 1251 | break; |
6efdf281 | 1252 | #endif |
48b62a1a | 1253 | } |
62a877e3 CH |
1254 | } |
1255 | ||
7884bc86 | 1256 | /* ro -> rw */ |
62a877e3 CH |
1257 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1258 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
7884bc86 CH |
1259 | |
1260 | /* | |
1261 | * If this is the first remount to writeable state we | |
1262 | * might have some superblock changes to update. | |
1263 | */ | |
1264 | if (mp->m_update_flags) { | |
1265 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1266 | if (error) { | |
4f10700a | 1267 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1268 | return error; |
1269 | } | |
1270 | mp->m_update_flags = 0; | |
1271 | } | |
cbe132a8 DC |
1272 | |
1273 | /* | |
1274 | * Fill out the reserve pool if it is empty. Use the stashed | |
1275 | * value if it is non-zero, otherwise go with the default. | |
1276 | */ | |
d5db0f97 | 1277 | xfs_restore_resvblks(mp); |
f661f1e0 | 1278 | xfs_log_work_queue(mp); |
62a877e3 CH |
1279 | } |
1280 | ||
1281 | /* rw -> ro */ | |
1282 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 | 1283 | /* |
34061f5c DC |
1284 | * Before we sync the metadata, we need to free up the reserve |
1285 | * block pool so that the used block count in the superblock on | |
1286 | * disk is correct at the end of the remount. Stash the current | |
1287 | * reserve pool size so that if we get remounted rw, we can | |
1288 | * return it to the same size. | |
cbe132a8 | 1289 | */ |
d5db0f97 | 1290 | xfs_save_resvblks(mp); |
76bf105c | 1291 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1292 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1293 | } | |
1294 | ||
62a877e3 | 1295 | return 0; |
1da177e4 LT |
1296 | } |
1297 | ||
9909c4aa CH |
1298 | /* |
1299 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1300 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1301 | * record to dirty the log in case of a crash while frozen. |
1302 | */ | |
c4be0c1d TS |
1303 | STATIC int |
1304 | xfs_fs_freeze( | |
1da177e4 LT |
1305 | struct super_block *sb) |
1306 | { | |
9909c4aa CH |
1307 | struct xfs_mount *mp = XFS_M(sb); |
1308 | ||
d5db0f97 | 1309 | xfs_save_resvblks(mp); |
76bf105c | 1310 | xfs_quiesce_attr(mp); |
2451337d | 1311 | return xfs_fs_log_dummy(mp); |
1da177e4 LT |
1312 | } |
1313 | ||
d5db0f97 ES |
1314 | STATIC int |
1315 | xfs_fs_unfreeze( | |
1316 | struct super_block *sb) | |
1317 | { | |
1318 | struct xfs_mount *mp = XFS_M(sb); | |
1319 | ||
1320 | xfs_restore_resvblks(mp); | |
f661f1e0 | 1321 | xfs_log_work_queue(mp); |
d5db0f97 ES |
1322 | return 0; |
1323 | } | |
1324 | ||
1da177e4 | 1325 | STATIC int |
a50cd269 | 1326 | xfs_fs_show_options( |
1da177e4 | 1327 | struct seq_file *m, |
34c80b1d | 1328 | struct dentry *root) |
1da177e4 | 1329 | { |
2451337d | 1330 | return xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1331 | } |
1332 | ||
f8f15e42 CH |
1333 | /* |
1334 | * This function fills in xfs_mount_t fields based on mount args. | |
1335 | * Note: the superblock _has_ now been read in. | |
1336 | */ | |
1337 | STATIC int | |
1338 | xfs_finish_flags( | |
f8f15e42 CH |
1339 | struct xfs_mount *mp) |
1340 | { | |
1341 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1342 | ||
025dfdaf | 1343 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1344 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1345 | if (mp->m_logbsize <= 0 && |
1346 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1347 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1348 | } else if (mp->m_logbsize > 0 && |
1349 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1350 | xfs_warn(mp, |
1351 | "logbuf size must be greater than or equal to log stripe size"); | |
2451337d | 1352 | return -EINVAL; |
f8f15e42 CH |
1353 | } |
1354 | } else { | |
1355 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1356 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1357 | xfs_warn(mp, |
1358 | "logbuf size for version 1 logs must be 16K or 32K"); | |
2451337d | 1359 | return -EINVAL; |
f8f15e42 CH |
1360 | } |
1361 | } | |
1362 | ||
d3eaace8 DC |
1363 | /* |
1364 | * V5 filesystems always use attr2 format for attributes. | |
1365 | */ | |
1366 | if (xfs_sb_version_hascrc(&mp->m_sb) && | |
1367 | (mp->m_flags & XFS_MOUNT_NOATTR2)) { | |
1368 | xfs_warn(mp, | |
1369 | "Cannot mount a V5 filesystem as %s. %s is always enabled for V5 filesystems.", | |
1370 | MNTOPT_NOATTR2, MNTOPT_ATTR2); | |
2451337d | 1371 | return -EINVAL; |
d3eaace8 DC |
1372 | } |
1373 | ||
f8f15e42 CH |
1374 | /* |
1375 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1376 | * told by noattr2 to turn it off | |
1377 | */ | |
1378 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1379 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1380 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1381 | ||
1382 | /* | |
1383 | * prohibit r/w mounts of read-only filesystems | |
1384 | */ | |
1385 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1386 | xfs_warn(mp, |
1387 | "cannot mount a read-only filesystem as read-write"); | |
2451337d | 1388 | return -EROFS; |
f8f15e42 CH |
1389 | } |
1390 | ||
d892d586 CS |
1391 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
1392 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && | |
1393 | !xfs_sb_version_has_pquotino(&mp->m_sb)) { | |
1394 | xfs_warn(mp, | |
1395 | "Super block does not support project and group quota together"); | |
2451337d | 1396 | return -EINVAL; |
d892d586 CS |
1397 | } |
1398 | ||
f8f15e42 CH |
1399 | return 0; |
1400 | } | |
1401 | ||
1da177e4 | 1402 | STATIC int |
a50cd269 | 1403 | xfs_fs_fill_super( |
1da177e4 LT |
1404 | struct super_block *sb, |
1405 | void *data, | |
1406 | int silent) | |
1407 | { | |
f3dcc13f | 1408 | struct inode *root; |
745f6919 | 1409 | struct xfs_mount *mp = NULL; |
2451337d | 1410 | int flags = 0, error = -ENOMEM; |
bdd907ba | 1411 | |
c962fb79 CH |
1412 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1413 | if (!mp) | |
9d565ffa | 1414 | goto out; |
1da177e4 | 1415 | |
c962fb79 | 1416 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1417 | mutex_init(&mp->m_growlock); |
1418 | atomic_set(&mp->m_active_trans, 0); | |
7e18530b | 1419 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
579b62fa | 1420 | INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker); |
e3aed1a0 | 1421 | mp->m_kobj.kobject.kset = xfs_kset; |
74394496 | 1422 | |
b267ce99 CH |
1423 | mp->m_super = sb; |
1424 | sb->s_fs_info = mp; | |
1da177e4 | 1425 | |
288699fe | 1426 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1427 | if (error) |
9d565ffa | 1428 | goto out_free_fsname; |
1da177e4 LT |
1429 | |
1430 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1431 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1432 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1433 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1434 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1435 | #endif |
a50cd269 | 1436 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1437 | |
9d565ffa | 1438 | if (silent) |
f8f15e42 CH |
1439 | flags |= XFS_MFSI_QUIET; |
1440 | ||
9d565ffa | 1441 | error = xfs_open_devices(mp); |
19f354d4 | 1442 | if (error) |
288699fe | 1443 | goto out_free_fsname; |
f8f15e42 | 1444 | |
2451337d | 1445 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1446 | if (error) |
1447 | goto out_close_devices; | |
c962fb79 | 1448 | |
2451337d | 1449 | error = xfs_icsb_init_counters(mp); |
aa6bf01d CH |
1450 | if (error) |
1451 | goto out_destroy_workqueues; | |
1452 | ||
f8f15e42 CH |
1453 | error = xfs_readsb(mp, flags); |
1454 | if (error) | |
9d565ffa CH |
1455 | goto out_destroy_counters; |
1456 | ||
1457 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1458 | if (error) |
effa2eda | 1459 | goto out_free_sb; |
f8f15e42 | 1460 | |
e34b562c | 1461 | error = xfs_setup_devices(mp); |
19f354d4 | 1462 | if (error) |
effa2eda | 1463 | goto out_free_sb; |
f8f15e42 | 1464 | |
f8f15e42 CH |
1465 | error = xfs_filestream_mount(mp); |
1466 | if (error) | |
effa2eda | 1467 | goto out_free_sb; |
f8f15e42 | 1468 | |
704b2907 DC |
1469 | /* |
1470 | * we must configure the block size in the superblock before we run the | |
1471 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1472 | */ |
4ca488eb CH |
1473 | sb->s_magic = XFS_SB_MAGIC; |
1474 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1475 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1476 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1477 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1478 | sb->s_time_gran = 1; |
1479 | set_posix_acl_flag(sb); | |
1480 | ||
dc037ad7 DC |
1481 | /* version 5 superblocks support inode version counters. */ |
1482 | if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) | |
1483 | sb->s_flags |= MS_I_VERSION; | |
1484 | ||
8a00ebe4 | 1485 | error = xfs_mountfs(mp); |
2bcf6e97 | 1486 | if (error) |
7e18530b | 1487 | goto out_filestream_unmount; |
704b2907 | 1488 | |
01651646 | 1489 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1490 | if (!root) { |
2451337d | 1491 | error = -ENOENT; |
8a00ebe4 | 1492 | goto out_unmount; |
cbc89dcf | 1493 | } |
48fde701 | 1494 | sb->s_root = d_make_root(root); |
f3dcc13f | 1495 | if (!sb->s_root) { |
2451337d | 1496 | error = -ENOMEM; |
8a00ebe4 | 1497 | goto out_unmount; |
1da177e4 | 1498 | } |
74394496 | 1499 | |
1da177e4 | 1500 | return 0; |
33c7a2bc | 1501 | |
7e18530b | 1502 | out_filestream_unmount: |
120226c1 | 1503 | xfs_filestream_unmount(mp); |
effa2eda CH |
1504 | out_free_sb: |
1505 | xfs_freesb(mp); | |
9d565ffa | 1506 | out_destroy_counters: |
c962fb79 | 1507 | xfs_icsb_destroy_counters(mp); |
aa6bf01d CH |
1508 | out_destroy_workqueues: |
1509 | xfs_destroy_mount_workqueues(mp); | |
61ba35de | 1510 | out_close_devices: |
19f354d4 | 1511 | xfs_close_devices(mp); |
9d565ffa CH |
1512 | out_free_fsname: |
1513 | xfs_free_fsname(mp); | |
c962fb79 | 1514 | kfree(mp); |
9d565ffa | 1515 | out: |
2451337d | 1516 | return error; |
f8f15e42 | 1517 | |
2bcf6e97 | 1518 | out_unmount: |
e48ad316 | 1519 | xfs_filestream_unmount(mp); |
19f354d4 | 1520 | xfs_unmountfs(mp); |
6203300e | 1521 | goto out_free_sb; |
1da177e4 LT |
1522 | } |
1523 | ||
152a0836 AV |
1524 | STATIC struct dentry * |
1525 | xfs_fs_mount( | |
1da177e4 LT |
1526 | struct file_system_type *fs_type, |
1527 | int flags, | |
1528 | const char *dev_name, | |
152a0836 | 1529 | void *data) |
1da177e4 | 1530 | { |
152a0836 | 1531 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1532 | } |
1533 | ||
0a234c6d | 1534 | static long |
8daaa831 | 1535 | xfs_fs_nr_cached_objects( |
9b17c623 DC |
1536 | struct super_block *sb, |
1537 | int nid) | |
8daaa831 DC |
1538 | { |
1539 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1540 | } | |
1541 | ||
0a234c6d | 1542 | static long |
8daaa831 DC |
1543 | xfs_fs_free_cached_objects( |
1544 | struct super_block *sb, | |
9b17c623 DC |
1545 | long nr_to_scan, |
1546 | int nid) | |
8daaa831 | 1547 | { |
0a234c6d | 1548 | return xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); |
8daaa831 DC |
1549 | } |
1550 | ||
b87221de | 1551 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1552 | .alloc_inode = xfs_fs_alloc_inode, |
1553 | .destroy_inode = xfs_fs_destroy_inode, | |
b57922d9 | 1554 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1555 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1556 | .put_super = xfs_fs_put_super, |
69961a26 | 1557 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1558 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1559 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1560 | .statfs = xfs_fs_statfs, |
1561 | .remount_fs = xfs_fs_remount, | |
1562 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1563 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1564 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1565 | }; |
1566 | ||
5085b607 | 1567 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1568 | .owner = THIS_MODULE, |
1569 | .name = "xfs", | |
152a0836 | 1570 | .mount = xfs_fs_mount, |
1da177e4 LT |
1571 | .kill_sb = kill_block_super, |
1572 | .fs_flags = FS_REQUIRES_DEV, | |
1573 | }; | |
7f78e035 | 1574 | MODULE_ALIAS_FS("xfs"); |
1da177e4 | 1575 | |
9f8868ff CH |
1576 | STATIC int __init |
1577 | xfs_init_zones(void) | |
1578 | { | |
9f8868ff CH |
1579 | |
1580 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1581 | if (!xfs_ioend_zone) | |
bf904248 | 1582 | goto out; |
9f8868ff CH |
1583 | |
1584 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1585 | xfs_ioend_zone); | |
1586 | if (!xfs_ioend_pool) | |
1587 | goto out_destroy_ioend_zone; | |
1588 | ||
1589 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1590 | "xfs_log_ticket"); | |
1591 | if (!xfs_log_ticket_zone) | |
1592 | goto out_destroy_ioend_pool; | |
1593 | ||
1594 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1595 | "xfs_bmap_free_item"); | |
1596 | if (!xfs_bmap_free_item_zone) | |
1597 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1598 | |
9f8868ff CH |
1599 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1600 | "xfs_btree_cur"); | |
1601 | if (!xfs_btree_cur_zone) | |
1602 | goto out_destroy_bmap_free_item_zone; | |
1603 | ||
1604 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1605 | "xfs_da_state"); | |
1606 | if (!xfs_da_state_zone) | |
1607 | goto out_destroy_btree_cur_zone; | |
1608 | ||
9f8868ff CH |
1609 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
1610 | if (!xfs_ifork_zone) | |
1d9025e5 | 1611 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1612 | |
1613 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1614 | if (!xfs_trans_zone) | |
1615 | goto out_destroy_ifork_zone; | |
1616 | ||
e98c414f CH |
1617 | xfs_log_item_desc_zone = |
1618 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1619 | "xfs_log_item_desc"); | |
1620 | if (!xfs_log_item_desc_zone) | |
1621 | goto out_destroy_trans_zone; | |
1622 | ||
9f8868ff CH |
1623 | /* |
1624 | * The size of the zone allocated buf log item is the maximum | |
1625 | * size possible under XFS. This wastes a little bit of memory, | |
1626 | * but it is much faster. | |
1627 | */ | |
77c1a08f DC |
1628 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1629 | "xfs_buf_item"); | |
9f8868ff | 1630 | if (!xfs_buf_item_zone) |
e98c414f | 1631 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1632 | |
1633 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1634 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1635 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1636 | if (!xfs_efd_zone) | |
1637 | goto out_destroy_buf_item_zone; | |
1638 | ||
1639 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1640 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1641 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1642 | if (!xfs_efi_zone) | |
1643 | goto out_destroy_efd_zone; | |
1644 | ||
1645 | xfs_inode_zone = | |
1646 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1647 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1648 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1649 | if (!xfs_inode_zone) |
1650 | goto out_destroy_efi_zone; | |
1651 | ||
1652 | xfs_ili_zone = | |
1653 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1654 | KM_ZONE_SPREAD, NULL); | |
1655 | if (!xfs_ili_zone) | |
1656 | goto out_destroy_inode_zone; | |
3ebe7d2d DC |
1657 | xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item), |
1658 | "xfs_icr"); | |
1659 | if (!xfs_icreate_zone) | |
1660 | goto out_destroy_ili_zone; | |
9f8868ff | 1661 | |
9f8868ff CH |
1662 | return 0; |
1663 | ||
3ebe7d2d DC |
1664 | out_destroy_ili_zone: |
1665 | kmem_zone_destroy(xfs_ili_zone); | |
9f8868ff CH |
1666 | out_destroy_inode_zone: |
1667 | kmem_zone_destroy(xfs_inode_zone); | |
1668 | out_destroy_efi_zone: | |
1669 | kmem_zone_destroy(xfs_efi_zone); | |
1670 | out_destroy_efd_zone: | |
1671 | kmem_zone_destroy(xfs_efd_zone); | |
1672 | out_destroy_buf_item_zone: | |
1673 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1674 | out_destroy_log_item_desc_zone: |
1675 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1676 | out_destroy_trans_zone: |
1677 | kmem_zone_destroy(xfs_trans_zone); | |
1678 | out_destroy_ifork_zone: | |
1679 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1680 | out_destroy_da_state_zone: |
1681 | kmem_zone_destroy(xfs_da_state_zone); | |
1682 | out_destroy_btree_cur_zone: | |
1683 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1684 | out_destroy_bmap_free_item_zone: | |
1685 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1686 | out_destroy_log_ticket_zone: | |
1687 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1688 | out_destroy_ioend_pool: | |
1689 | mempool_destroy(xfs_ioend_pool); | |
1690 | out_destroy_ioend_zone: | |
1691 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1692 | out: |
1693 | return -ENOMEM; | |
1694 | } | |
1695 | ||
1696 | STATIC void | |
1697 | xfs_destroy_zones(void) | |
1698 | { | |
8c0a8537 KS |
1699 | /* |
1700 | * Make sure all delayed rcu free are flushed before we | |
1701 | * destroy caches. | |
1702 | */ | |
1703 | rcu_barrier(); | |
3ebe7d2d | 1704 | kmem_zone_destroy(xfs_icreate_zone); |
9f8868ff CH |
1705 | kmem_zone_destroy(xfs_ili_zone); |
1706 | kmem_zone_destroy(xfs_inode_zone); | |
1707 | kmem_zone_destroy(xfs_efi_zone); | |
1708 | kmem_zone_destroy(xfs_efd_zone); | |
1709 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1710 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1711 | kmem_zone_destroy(xfs_trans_zone); |
1712 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1713 | kmem_zone_destroy(xfs_da_state_zone); |
1714 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1715 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1716 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1717 | mempool_destroy(xfs_ioend_pool); | |
1718 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1719 | |
1720 | } | |
1da177e4 | 1721 | |
0bf6a5bd DC |
1722 | STATIC int __init |
1723 | xfs_init_workqueues(void) | |
1724 | { | |
c999a223 DC |
1725 | /* |
1726 | * The allocation workqueue can be used in memory reclaim situations | |
1727 | * (writepage path), and parallelism is only limited by the number of | |
1728 | * AGs in all the filesystems mounted. Hence use the default large | |
1729 | * max_active value for this workqueue. | |
1730 | */ | |
8018ec08 BF |
1731 | xfs_alloc_wq = alloc_workqueue("xfsalloc", |
1732 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0); | |
c999a223 | 1733 | if (!xfs_alloc_wq) |
5889608d | 1734 | return -ENOMEM; |
c999a223 | 1735 | |
0bf6a5bd | 1736 | return 0; |
0bf6a5bd DC |
1737 | } |
1738 | ||
39411f81 | 1739 | STATIC void |
0bf6a5bd DC |
1740 | xfs_destroy_workqueues(void) |
1741 | { | |
c999a223 | 1742 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1743 | } |
1744 | ||
1da177e4 | 1745 | STATIC int __init |
9f8868ff | 1746 | init_xfs_fs(void) |
1da177e4 LT |
1747 | { |
1748 | int error; | |
1da177e4 | 1749 | |
65795910 CH |
1750 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1751 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1752 | |
9f8868ff | 1753 | xfs_dir_startup(); |
1da177e4 | 1754 | |
8758280f | 1755 | error = xfs_init_zones(); |
9f8868ff CH |
1756 | if (error) |
1757 | goto out; | |
1758 | ||
0bf6a5bd | 1759 | error = xfs_init_workqueues(); |
9f8868ff | 1760 | if (error) |
0b1b213f | 1761 | goto out_destroy_zones; |
9f8868ff | 1762 | |
0bf6a5bd DC |
1763 | error = xfs_mru_cache_init(); |
1764 | if (error) | |
1765 | goto out_destroy_wq; | |
1766 | ||
ce8e922c | 1767 | error = xfs_buf_init(); |
9f8868ff | 1768 | if (error) |
1919adda | 1769 | goto out_mru_cache_uninit; |
9f8868ff CH |
1770 | |
1771 | error = xfs_init_procfs(); | |
1772 | if (error) | |
1773 | goto out_buf_terminate; | |
1774 | ||
1775 | error = xfs_sysctl_register(); | |
1776 | if (error) | |
1777 | goto out_cleanup_procfs; | |
1da177e4 | 1778 | |
3d871226 BF |
1779 | xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); |
1780 | if (!xfs_kset) { | |
1781 | error = -ENOMEM; | |
1782 | goto out_sysctl_unregister;; | |
1783 | } | |
1784 | ||
65b65735 BF |
1785 | #ifdef DEBUG |
1786 | xfs_dbg_kobj.kobject.kset = xfs_kset; | |
1787 | error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); | |
a05931ce | 1788 | if (error) |
3d871226 | 1789 | goto out_kset_unregister; |
65b65735 BF |
1790 | #endif |
1791 | ||
1792 | error = xfs_qm_init(); | |
1793 | if (error) | |
1794 | goto out_remove_kobj; | |
1da177e4 LT |
1795 | |
1796 | error = register_filesystem(&xfs_fs_type); | |
1797 | if (error) | |
a05931ce | 1798 | goto out_qm_exit; |
1da177e4 LT |
1799 | return 0; |
1800 | ||
a05931ce CH |
1801 | out_qm_exit: |
1802 | xfs_qm_exit(); | |
65b65735 BF |
1803 | out_remove_kobj: |
1804 | #ifdef DEBUG | |
1805 | xfs_sysfs_del(&xfs_dbg_kobj); | |
3d871226 | 1806 | out_kset_unregister: |
65b65735 | 1807 | #endif |
3d871226 | 1808 | kset_unregister(xfs_kset); |
9f8868ff CH |
1809 | out_sysctl_unregister: |
1810 | xfs_sysctl_unregister(); | |
1811 | out_cleanup_procfs: | |
1812 | xfs_cleanup_procfs(); | |
1813 | out_buf_terminate: | |
ce8e922c | 1814 | xfs_buf_terminate(); |
9f8868ff CH |
1815 | out_mru_cache_uninit: |
1816 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1817 | out_destroy_wq: |
1818 | xfs_destroy_workqueues(); | |
9f8868ff | 1819 | out_destroy_zones: |
8758280f | 1820 | xfs_destroy_zones(); |
9f8868ff | 1821 | out: |
1da177e4 LT |
1822 | return error; |
1823 | } | |
1824 | ||
1825 | STATIC void __exit | |
9f8868ff | 1826 | exit_xfs_fs(void) |
1da177e4 | 1827 | { |
a05931ce | 1828 | xfs_qm_exit(); |
1da177e4 | 1829 | unregister_filesystem(&xfs_fs_type); |
65b65735 BF |
1830 | #ifdef DEBUG |
1831 | xfs_sysfs_del(&xfs_dbg_kobj); | |
1832 | #endif | |
3d871226 | 1833 | kset_unregister(xfs_kset); |
9f8868ff CH |
1834 | xfs_sysctl_unregister(); |
1835 | xfs_cleanup_procfs(); | |
ce8e922c | 1836 | xfs_buf_terminate(); |
9f8868ff | 1837 | xfs_mru_cache_uninit(); |
0bf6a5bd | 1838 | xfs_destroy_workqueues(); |
8758280f | 1839 | xfs_destroy_zones(); |
1da177e4 LT |
1840 | } |
1841 | ||
1842 | module_init(init_xfs_fs); | |
1843 | module_exit(exit_xfs_fs); | |
1844 | ||
1845 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1846 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1847 | MODULE_LICENSE("GPL"); |