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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" | |
1da177e4 | 24 | #include "xfs_sb.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
57062787 | 26 | #include "xfs_da_format.h" |
1da177e4 | 27 | #include "xfs_inode.h" |
a844f451 | 28 | #include "xfs_btree.h" |
1da177e4 | 29 | #include "xfs_bmap.h" |
a4fbe6ab | 30 | #include "xfs_alloc.h" |
1da177e4 | 31 | #include "xfs_error.h" |
9909c4aa | 32 | #include "xfs_fsops.h" |
239880ef | 33 | #include "xfs_trans.h" |
1da177e4 | 34 | #include "xfs_buf_item.h" |
239880ef | 35 | #include "xfs_log.h" |
a67d7c5f | 36 | #include "xfs_log_priv.h" |
9f8868ff | 37 | #include "xfs_da_btree.h" |
2b9ab5ab | 38 | #include "xfs_dir2.h" |
9f8868ff CH |
39 | #include "xfs_extfree_item.h" |
40 | #include "xfs_mru_cache.h" | |
41 | #include "xfs_inode_item.h" | |
6d8b79cf | 42 | #include "xfs_icache.h" |
0b1b213f | 43 | #include "xfs_trace.h" |
3ebe7d2d | 44 | #include "xfs_icreate_item.h" |
a4fbe6ab DC |
45 | #include "xfs_filestream.h" |
46 | #include "xfs_quota.h" | |
65b65735 | 47 | #include "xfs_sysfs.h" |
1da177e4 LT |
48 | |
49 | #include <linux/namei.h> | |
50 | #include <linux/init.h> | |
5a0e3ad6 | 51 | #include <linux/slab.h> |
1da177e4 | 52 | #include <linux/mount.h> |
0829c360 | 53 | #include <linux/mempool.h> |
1da177e4 | 54 | #include <linux/writeback.h> |
4df08c52 | 55 | #include <linux/kthread.h> |
7dfb7103 | 56 | #include <linux/freezer.h> |
62a877e3 | 57 | #include <linux/parser.h> |
1da177e4 | 58 | |
b87221de | 59 | static const struct super_operations xfs_super_operations; |
7989cb8e | 60 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 61 | mempool_t *xfs_ioend_pool; |
65b65735 | 62 | |
e3aed1a0 | 63 | static struct kset *xfs_kset; /* top-level xfs sysfs dir */ |
65b65735 BF |
64 | #ifdef DEBUG |
65 | static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */ | |
66 | #endif | |
1da177e4 | 67 | |
a67d7c5f DC |
68 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
69 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
70 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
71 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
72 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
73 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
74 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
75 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
76 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
77 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
78 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
79 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
80 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
81 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
82 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
83 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
84 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
85 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
86 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
87 | * unwritten extent conversion */ | |
88 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
a67d7c5f | 89 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
08bf5404 CM |
90 | #define MNTOPT_32BITINODE "inode32" /* inode allocation limited to |
91 | * XFS_MAXINUMBER_32 */ | |
a67d7c5f DC |
92 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ |
93 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
94 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
95 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
96 | * in stat(). */ | |
97 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
98 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
99 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
100 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
101 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
102 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
103 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
104 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
105 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
106 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
107 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
108 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
109 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
110 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
111 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
e84661aa CH |
112 | #define MNTOPT_DISCARD "discard" /* Discard unused blocks */ |
113 | #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ | |
a67d7c5f | 114 | |
cbe4dab1 DC |
115 | #define MNTOPT_DAX "dax" /* Enable direct access to bdev pages */ |
116 | ||
62a877e3 CH |
117 | /* |
118 | * Table driven mount option parser. | |
119 | * | |
120 | * Currently only used for remount, but it will be used for mount | |
121 | * in the future, too. | |
122 | */ | |
123 | enum { | |
2ea03929 CM |
124 | Opt_barrier, |
125 | Opt_nobarrier, | |
126 | Opt_inode64, | |
127 | Opt_inode32, | |
128 | Opt_err | |
62a877e3 CH |
129 | }; |
130 | ||
a447c093 | 131 | static const match_table_t tokens = { |
62a877e3 CH |
132 | {Opt_barrier, "barrier"}, |
133 | {Opt_nobarrier, "nobarrier"}, | |
c3a58fec | 134 | {Opt_inode64, "inode64"}, |
2ea03929 | 135 | {Opt_inode32, "inode32"}, |
62a877e3 CH |
136 | {Opt_err, NULL} |
137 | }; | |
138 | ||
139 | ||
a67d7c5f | 140 | STATIC unsigned long |
a17164e5 | 141 | suffix_kstrtoint(char *s, unsigned int base, int *res) |
a67d7c5f | 142 | { |
a17164e5 | 143 | int last, shift_left_factor = 0, _res; |
a67d7c5f DC |
144 | char *value = s; |
145 | ||
146 | last = strlen(value) - 1; | |
147 | if (value[last] == 'K' || value[last] == 'k') { | |
148 | shift_left_factor = 10; | |
149 | value[last] = '\0'; | |
150 | } | |
151 | if (value[last] == 'M' || value[last] == 'm') { | |
152 | shift_left_factor = 20; | |
153 | value[last] = '\0'; | |
154 | } | |
155 | if (value[last] == 'G' || value[last] == 'g') { | |
156 | shift_left_factor = 30; | |
157 | value[last] = '\0'; | |
158 | } | |
159 | ||
a17164e5 AP |
160 | if (kstrtoint(s, base, &_res)) |
161 | return -EINVAL; | |
162 | *res = _res << shift_left_factor; | |
163 | return 0; | |
a67d7c5f DC |
164 | } |
165 | ||
9d565ffa CH |
166 | /* |
167 | * This function fills in xfs_mount_t fields based on mount args. | |
168 | * Note: the superblock has _not_ yet been read in. | |
169 | * | |
170 | * Note that this function leaks the various device name allocations on | |
171 | * failure. The caller takes care of them. | |
172 | */ | |
a67d7c5f DC |
173 | STATIC int |
174 | xfs_parseargs( | |
175 | struct xfs_mount *mp, | |
288699fe | 176 | char *options) |
a67d7c5f | 177 | { |
9d565ffa | 178 | struct super_block *sb = mp->m_super; |
a17164e5 | 179 | char *this_char, *value; |
9d565ffa CH |
180 | int dsunit = 0; |
181 | int dswidth = 0; | |
182 | int iosize = 0; | |
a5687787 | 183 | __uint8_t iosizelog = 0; |
9d565ffa | 184 | |
4f10700a DC |
185 | /* |
186 | * set up the mount name first so all the errors will refer to the | |
187 | * correct device. | |
188 | */ | |
189 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
190 | if (!mp->m_fsname) | |
2451337d | 191 | return -ENOMEM; |
4f10700a DC |
192 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; |
193 | ||
9d565ffa CH |
194 | /* |
195 | * Copy binary VFS mount flags we are interested in. | |
196 | */ | |
197 | if (sb->s_flags & MS_RDONLY) | |
198 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
199 | if (sb->s_flags & MS_DIRSYNC) | |
200 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
201 | if (sb->s_flags & MS_SYNCHRONOUS) | |
202 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
203 | ||
204 | /* | |
205 | * Set some default flags that could be cleared by the mount option | |
206 | * parsing. | |
207 | */ | |
208 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
209 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
a67d7c5f | 210 | |
9d565ffa CH |
211 | /* |
212 | * These can be overridden by the mount option parsing. | |
213 | */ | |
214 | mp->m_logbufs = -1; | |
215 | mp->m_logbsize = -1; | |
a67d7c5f DC |
216 | |
217 | if (!options) | |
218 | goto done; | |
219 | ||
a67d7c5f DC |
220 | while ((this_char = strsep(&options, ",")) != NULL) { |
221 | if (!*this_char) | |
222 | continue; | |
223 | if ((value = strchr(this_char, '=')) != NULL) | |
224 | *value++ = 0; | |
225 | ||
226 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
227 | if (!value || !*value) { | |
4f10700a | 228 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 229 | this_char); |
2451337d | 230 | return -EINVAL; |
a67d7c5f | 231 | } |
a17164e5 | 232 | if (kstrtoint(value, 10, &mp->m_logbufs)) |
2451337d | 233 | return -EINVAL; |
a67d7c5f DC |
234 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
235 | if (!value || !*value) { | |
4f10700a | 236 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 237 | this_char); |
2451337d | 238 | return -EINVAL; |
a67d7c5f | 239 | } |
a17164e5 | 240 | if (suffix_kstrtoint(value, 10, &mp->m_logbsize)) |
2451337d | 241 | return -EINVAL; |
a67d7c5f DC |
242 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
243 | if (!value || !*value) { | |
4f10700a | 244 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 245 | this_char); |
2451337d | 246 | return -EINVAL; |
a67d7c5f | 247 | } |
9d565ffa CH |
248 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
249 | if (!mp->m_logname) | |
2451337d | 250 | return -ENOMEM; |
a67d7c5f | 251 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 252 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe | 253 | this_char); |
2451337d | 254 | return -EINVAL; |
a67d7c5f DC |
255 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
256 | if (!value || !*value) { | |
4f10700a | 257 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 258 | this_char); |
2451337d | 259 | return -EINVAL; |
a67d7c5f | 260 | } |
9d565ffa CH |
261 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
262 | if (!mp->m_rtname) | |
2451337d | 263 | return -ENOMEM; |
2ccf4a9b ES |
264 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE) || |
265 | !strcmp(this_char, MNTOPT_BIOSIZE)) { | |
a67d7c5f | 266 | if (!value || !*value) { |
4f10700a | 267 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 268 | this_char); |
2451337d | 269 | return -EINVAL; |
a67d7c5f | 270 | } |
a17164e5 | 271 | if (suffix_kstrtoint(value, 10, &iosize)) |
2451337d | 272 | return -EINVAL; |
9d565ffa | 273 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
274 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
275 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
276 | mp->m_flags |= XFS_MOUNT_GRPID; | |
277 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
278 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
279 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
280 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 281 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 282 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 283 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 284 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 285 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 286 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 287 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
288 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
289 | if (!value || !*value) { | |
4f10700a | 290 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 291 | this_char); |
2451337d | 292 | return -EINVAL; |
a67d7c5f | 293 | } |
a17164e5 | 294 | if (kstrtoint(value, 10, &dsunit)) |
2451337d | 295 | return -EINVAL; |
a67d7c5f DC |
296 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { |
297 | if (!value || !*value) { | |
4f10700a | 298 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 299 | this_char); |
2451337d | 300 | return -EINVAL; |
a67d7c5f | 301 | } |
a17164e5 | 302 | if (kstrtoint(value, 10, &dswidth)) |
2451337d | 303 | return -EINVAL; |
08bf5404 CM |
304 | } else if (!strcmp(this_char, MNTOPT_32BITINODE)) { |
305 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 306 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
9d565ffa | 307 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 308 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { |
9d565ffa | 309 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 310 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 311 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 312 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 313 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 314 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 315 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 316 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 317 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 318 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 319 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 320 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 321 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 322 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 323 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 324 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
325 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
326 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 327 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 328 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 329 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
4177af3a CS |
330 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
331 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
332 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
a67d7c5f DC |
333 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
334 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
335 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
336 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
337 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
338 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
339 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
340 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
341 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
342 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
343 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa | 344 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
83e782e1 | 345 | XFS_PQUOTA_ENFD); |
a67d7c5f | 346 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa | 347 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
83e782e1 | 348 | mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
a67d7c5f DC |
349 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
350 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa | 351 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
83e782e1 | 352 | XFS_GQUOTA_ENFD); |
a67d7c5f | 353 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa | 354 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
83e782e1 | 355 | mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
e84661aa CH |
356 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
357 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
358 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
359 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
cbe4dab1 DC |
360 | #ifdef CONFIG_FS_DAX |
361 | } else if (!strcmp(this_char, MNTOPT_DAX)) { | |
362 | mp->m_flags |= XFS_MOUNT_DAX; | |
363 | #endif | |
a67d7c5f | 364 | } else { |
4f10700a | 365 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
2451337d | 366 | return -EINVAL; |
a67d7c5f DC |
367 | } |
368 | } | |
369 | ||
9d565ffa CH |
370 | /* |
371 | * no recovery flag requires a read-only mount | |
372 | */ | |
373 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
374 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 375 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
2451337d | 376 | return -EINVAL; |
a67d7c5f DC |
377 | } |
378 | ||
9d565ffa | 379 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
380 | xfs_warn(mp, |
381 | "sunit and swidth options incompatible with the noalign option"); | |
2451337d | 382 | return -EINVAL; |
a67d7c5f DC |
383 | } |
384 | ||
7d095257 CH |
385 | #ifndef CONFIG_XFS_QUOTA |
386 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 387 | xfs_warn(mp, "quota support not available in this kernel."); |
2451337d | 388 | return -EINVAL; |
7d095257 CH |
389 | } |
390 | #endif | |
391 | ||
a67d7c5f | 392 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 393 | xfs_warn(mp, "sunit and swidth must be specified together"); |
2451337d | 394 | return -EINVAL; |
a67d7c5f DC |
395 | } |
396 | ||
397 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
398 | xfs_warn(mp, |
399 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f | 400 | dswidth, dsunit); |
2451337d | 401 | return -EINVAL; |
a67d7c5f DC |
402 | } |
403 | ||
9d565ffa | 404 | done: |
39a45d84 | 405 | if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) { |
9d565ffa CH |
406 | /* |
407 | * At this point the superblock has not been read | |
408 | * in, therefore we do not know the block size. | |
409 | * Before the mount call ends we will convert | |
410 | * these to FSBs. | |
411 | */ | |
39a45d84 JL |
412 | mp->m_dalign = dsunit; |
413 | mp->m_swidth = dswidth; | |
9d565ffa CH |
414 | } |
415 | ||
416 | if (mp->m_logbufs != -1 && | |
417 | mp->m_logbufs != 0 && | |
418 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
419 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 420 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa | 421 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
2451337d | 422 | return -EINVAL; |
9d565ffa CH |
423 | } |
424 | if (mp->m_logbsize != -1 && | |
425 | mp->m_logbsize != 0 && | |
426 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
427 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
428 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
429 | xfs_warn(mp, |
430 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa | 431 | mp->m_logbsize); |
2451337d | 432 | return -EINVAL; |
9d565ffa CH |
433 | } |
434 | ||
9d565ffa CH |
435 | if (iosizelog) { |
436 | if (iosizelog > XFS_MAX_IO_LOG || | |
437 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 438 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
439 | iosizelog, XFS_MIN_IO_LOG, |
440 | XFS_MAX_IO_LOG); | |
2451337d | 441 | return -EINVAL; |
9d565ffa CH |
442 | } |
443 | ||
444 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
445 | mp->m_readio_log = iosizelog; | |
446 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
447 | } |
448 | ||
a67d7c5f DC |
449 | return 0; |
450 | } | |
451 | ||
452 | struct proc_xfs_info { | |
cbe4dab1 DC |
453 | uint64_t flag; |
454 | char *str; | |
a67d7c5f DC |
455 | }; |
456 | ||
457 | STATIC int | |
458 | xfs_showargs( | |
459 | struct xfs_mount *mp, | |
460 | struct seq_file *m) | |
461 | { | |
462 | static struct proc_xfs_info xfs_info_set[] = { | |
463 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 464 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 465 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
466 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
467 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
468 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
469 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
470 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
471 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 472 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 473 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
08bf5404 | 474 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE }, |
cbe4dab1 | 475 | { XFS_MOUNT_DAX, "," MNTOPT_DAX }, |
a67d7c5f DC |
476 | { 0, NULL } |
477 | }; | |
478 | static struct proc_xfs_info xfs_info_unset[] = { | |
479 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
480 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
481 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
482 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
483 | { 0, NULL } | |
484 | }; | |
485 | struct proc_xfs_info *xfs_infop; | |
486 | ||
487 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
488 | if (mp->m_flags & xfs_infop->flag) | |
489 | seq_puts(m, xfs_infop->str); | |
490 | } | |
491 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
492 | if (!(mp->m_flags & xfs_infop->flag)) | |
493 | seq_puts(m, xfs_infop->str); | |
494 | } | |
495 | ||
496 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
497 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
498 | (int)(1 << mp->m_writeio_log) >> 10); | |
499 | ||
500 | if (mp->m_logbufs > 0) | |
501 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
502 | if (mp->m_logbsize > 0) | |
503 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
504 | ||
505 | if (mp->m_logname) | |
a068acf2 | 506 | seq_show_option(m, MNTOPT_LOGDEV, mp->m_logname); |
a67d7c5f | 507 | if (mp->m_rtname) |
a068acf2 | 508 | seq_show_option(m, MNTOPT_RTDEV, mp->m_rtname); |
a67d7c5f DC |
509 | |
510 | if (mp->m_dalign > 0) | |
511 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
512 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
513 | if (mp->m_swidth > 0) | |
514 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
515 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
516 | ||
517 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
518 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
519 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
520 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
521 | ||
988abe40 | 522 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
83e782e1 | 523 | if (mp->m_qflags & XFS_PQUOTA_ENFD) |
988abe40 AE |
524 | seq_puts(m, "," MNTOPT_PRJQUOTA); |
525 | else | |
526 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
d892d586 CS |
527 | } |
528 | if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
83e782e1 | 529 | if (mp->m_qflags & XFS_GQUOTA_ENFD) |
988abe40 AE |
530 | seq_puts(m, "," MNTOPT_GRPQUOTA); |
531 | else | |
532 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
533 | } | |
a67d7c5f DC |
534 | |
535 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
536 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
537 | ||
538 | return 0; | |
539 | } | |
1da177e4 LT |
540 | __uint64_t |
541 | xfs_max_file_offset( | |
542 | unsigned int blockshift) | |
543 | { | |
544 | unsigned int pagefactor = 1; | |
545 | unsigned int bitshift = BITS_PER_LONG - 1; | |
546 | ||
547 | /* Figure out maximum filesize, on Linux this can depend on | |
548 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 549 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
550 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
551 | * So, for page sized blocks (4K on 32 bit platforms), | |
552 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
553 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
554 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
555 | * Note1: get_block_t takes a long (implicit cast from above) | |
556 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
557 | * can optionally convert the [unsigned] long from above into | |
558 | * an [unsigned] long long. | |
559 | */ | |
560 | ||
561 | #if BITS_PER_LONG == 32 | |
90c699a9 | 562 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
563 | ASSERT(sizeof(sector_t) == 8); |
564 | pagefactor = PAGE_CACHE_SIZE; | |
565 | bitshift = BITS_PER_LONG; | |
566 | # else | |
567 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
568 | # endif | |
569 | #endif | |
570 | ||
571 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
572 | } | |
573 | ||
9de67c3b ES |
574 | /* |
575 | * xfs_set_inode32() and xfs_set_inode64() are passed an agcount | |
576 | * because in the growfs case, mp->m_sb.sb_agcount is not updated | |
577 | * yet to the potentially higher ag count. | |
578 | */ | |
2d2194f6 | 579 | xfs_agnumber_t |
9de67c3b | 580 | xfs_set_inode32(struct xfs_mount *mp, xfs_agnumber_t agcount) |
2d2194f6 CM |
581 | { |
582 | xfs_agnumber_t index = 0; | |
4056c1d0 | 583 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
584 | xfs_sb_t *sbp = &mp->m_sb; |
585 | xfs_agnumber_t max_metadata; | |
54aa61f8 ES |
586 | xfs_agino_t agino; |
587 | xfs_ino_t ino; | |
2d2194f6 CM |
588 | xfs_perag_t *pag; |
589 | ||
590 | /* Calculate how much should be reserved for inodes to meet | |
591 | * the max inode percentage. | |
592 | */ | |
593 | if (mp->m_maxicount) { | |
594 | __uint64_t icount; | |
595 | ||
596 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
597 | do_div(icount, 100); | |
598 | icount += sbp->sb_agblocks - 1; | |
599 | do_div(icount, sbp->sb_agblocks); | |
600 | max_metadata = icount; | |
601 | } else { | |
9de67c3b | 602 | max_metadata = agcount; |
2d2194f6 CM |
603 | } |
604 | ||
54aa61f8 ES |
605 | agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0); |
606 | ||
9de67c3b | 607 | for (index = 0; index < agcount; index++) { |
2d2194f6 | 608 | ino = XFS_AGINO_TO_INO(mp, index, agino); |
4056c1d0 | 609 | |
2d2194f6 | 610 | if (ino > XFS_MAXINUMBER_32) { |
4056c1d0 CM |
611 | pag = xfs_perag_get(mp, index); |
612 | pag->pagi_inodeok = 0; | |
613 | pag->pagf_metadata = 0; | |
614 | xfs_perag_put(pag); | |
615 | continue; | |
2d2194f6 CM |
616 | } |
617 | ||
618 | pag = xfs_perag_get(mp, index); | |
619 | pag->pagi_inodeok = 1; | |
4056c1d0 | 620 | maxagi++; |
2d2194f6 CM |
621 | if (index < max_metadata) |
622 | pag->pagf_metadata = 1; | |
623 | xfs_perag_put(pag); | |
624 | } | |
4056c1d0 CM |
625 | mp->m_flags |= (XFS_MOUNT_32BITINODES | |
626 | XFS_MOUNT_SMALL_INUMS); | |
627 | ||
628 | return maxagi; | |
2d2194f6 CM |
629 | } |
630 | ||
631 | xfs_agnumber_t | |
9de67c3b | 632 | xfs_set_inode64(struct xfs_mount *mp, xfs_agnumber_t agcount) |
2d2194f6 CM |
633 | { |
634 | xfs_agnumber_t index = 0; | |
635 | ||
9de67c3b | 636 | for (index = 0; index < agcount; index++) { |
2d2194f6 CM |
637 | struct xfs_perag *pag; |
638 | ||
639 | pag = xfs_perag_get(mp, index); | |
640 | pag->pagi_inodeok = 1; | |
641 | pag->pagf_metadata = 0; | |
642 | xfs_perag_put(pag); | |
643 | } | |
644 | ||
645 | /* There is no need for lock protection on m_flags, | |
646 | * the rw_semaphore of the VFS superblock is locked | |
647 | * during mount/umount/remount operations, so this is | |
648 | * enough to avoid concurency on the m_flags field | |
649 | */ | |
650 | mp->m_flags &= ~(XFS_MOUNT_32BITINODES | | |
651 | XFS_MOUNT_SMALL_INUMS); | |
652 | return index; | |
653 | } | |
654 | ||
3180e66d | 655 | STATIC int |
1da177e4 LT |
656 | xfs_blkdev_get( |
657 | xfs_mount_t *mp, | |
658 | const char *name, | |
659 | struct block_device **bdevp) | |
660 | { | |
661 | int error = 0; | |
662 | ||
d4d77629 TH |
663 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
664 | mp); | |
1da177e4 LT |
665 | if (IS_ERR(*bdevp)) { |
666 | error = PTR_ERR(*bdevp); | |
77af574e | 667 | xfs_warn(mp, "Invalid device [%s], error=%d", name, error); |
1da177e4 LT |
668 | } |
669 | ||
2451337d | 670 | return error; |
1da177e4 LT |
671 | } |
672 | ||
3180e66d | 673 | STATIC void |
1da177e4 LT |
674 | xfs_blkdev_put( |
675 | struct block_device *bdev) | |
676 | { | |
677 | if (bdev) | |
e525fd89 | 678 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
679 | } |
680 | ||
f538d4da CH |
681 | void |
682 | xfs_blkdev_issue_flush( | |
683 | xfs_buftarg_t *buftarg) | |
684 | { | |
7582df51 | 685 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 686 | } |
1da177e4 | 687 | |
19f354d4 CH |
688 | STATIC void |
689 | xfs_close_devices( | |
690 | struct xfs_mount *mp) | |
691 | { | |
692 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 693 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 694 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 695 | xfs_blkdev_put(logdev); |
19f354d4 CH |
696 | } |
697 | if (mp->m_rtdev_targp) { | |
c032bfcf | 698 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 699 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 700 | xfs_blkdev_put(rtdev); |
19f354d4 | 701 | } |
b7963133 | 702 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
703 | } |
704 | ||
705 | /* | |
706 | * The file system configurations are: | |
707 | * (1) device (partition) with data and internal log | |
708 | * (2) logical volume with data and log subvolumes. | |
709 | * (3) logical volume with data, log, and realtime subvolumes. | |
710 | * | |
711 | * We only have to handle opening the log and realtime volumes here if | |
712 | * they are present. The data subvolume has already been opened by | |
713 | * get_sb_bdev() and is stored in sb->s_bdev. | |
714 | */ | |
715 | STATIC int | |
716 | xfs_open_devices( | |
9d565ffa | 717 | struct xfs_mount *mp) |
19f354d4 CH |
718 | { |
719 | struct block_device *ddev = mp->m_super->s_bdev; | |
720 | struct block_device *logdev = NULL, *rtdev = NULL; | |
721 | int error; | |
722 | ||
723 | /* | |
724 | * Open real time and log devices - order is important. | |
725 | */ | |
9d565ffa CH |
726 | if (mp->m_logname) { |
727 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
728 | if (error) |
729 | goto out; | |
730 | } | |
731 | ||
9d565ffa CH |
732 | if (mp->m_rtname) { |
733 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
734 | if (error) |
735 | goto out_close_logdev; | |
736 | ||
737 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
738 | xfs_warn(mp, |
739 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
2451337d | 740 | error = -EINVAL; |
19f354d4 CH |
741 | goto out_close_rtdev; |
742 | } | |
743 | } | |
744 | ||
745 | /* | |
746 | * Setup xfs_mount buffer target pointers | |
747 | */ | |
2451337d | 748 | error = -ENOMEM; |
34dcefd7 | 749 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev); |
19f354d4 CH |
750 | if (!mp->m_ddev_targp) |
751 | goto out_close_rtdev; | |
752 | ||
753 | if (rtdev) { | |
34dcefd7 | 754 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev); |
19f354d4 CH |
755 | if (!mp->m_rtdev_targp) |
756 | goto out_free_ddev_targ; | |
757 | } | |
758 | ||
759 | if (logdev && logdev != ddev) { | |
34dcefd7 | 760 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev); |
19f354d4 CH |
761 | if (!mp->m_logdev_targp) |
762 | goto out_free_rtdev_targ; | |
763 | } else { | |
764 | mp->m_logdev_targp = mp->m_ddev_targp; | |
765 | } | |
766 | ||
767 | return 0; | |
768 | ||
769 | out_free_rtdev_targ: | |
770 | if (mp->m_rtdev_targp) | |
b7963133 | 771 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 772 | out_free_ddev_targ: |
b7963133 | 773 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 | 774 | out_close_rtdev: |
d2a5e3c6 | 775 | xfs_blkdev_put(rtdev); |
19f354d4 CH |
776 | out_close_logdev: |
777 | if (logdev && logdev != ddev) | |
778 | xfs_blkdev_put(logdev); | |
779 | out: | |
780 | return error; | |
781 | } | |
782 | ||
e34b562c CH |
783 | /* |
784 | * Setup xfs_mount buffer target pointers based on superblock | |
785 | */ | |
786 | STATIC int | |
787 | xfs_setup_devices( | |
788 | struct xfs_mount *mp) | |
789 | { | |
790 | int error; | |
19f354d4 | 791 | |
a96c4151 | 792 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize); |
e34b562c CH |
793 | if (error) |
794 | return error; | |
795 | ||
796 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
797 | unsigned int log_sector_size = BBSIZE; | |
798 | ||
799 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
800 | log_sector_size = mp->m_sb.sb_logsectsize; | |
801 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
e34b562c CH |
802 | log_sector_size); |
803 | if (error) | |
804 | return error; | |
805 | } | |
806 | if (mp->m_rtdev_targp) { | |
807 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
e34b562c CH |
808 | mp->m_sb.sb_sectsize); |
809 | if (error) | |
810 | return error; | |
811 | } | |
812 | ||
813 | return 0; | |
814 | } | |
19f354d4 | 815 | |
aa6bf01d CH |
816 | STATIC int |
817 | xfs_init_mount_workqueues( | |
818 | struct xfs_mount *mp) | |
819 | { | |
78c931b8 | 820 | mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s", |
b29c70f5 | 821 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 1, mp->m_fsname); |
78c931b8 BF |
822 | if (!mp->m_buf_workqueue) |
823 | goto out; | |
824 | ||
aa6bf01d | 825 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", |
8018ec08 | 826 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d | 827 | if (!mp->m_data_workqueue) |
78c931b8 | 828 | goto out_destroy_buf; |
aa6bf01d CH |
829 | |
830 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", | |
8018ec08 | 831 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d CH |
832 | if (!mp->m_unwritten_workqueue) |
833 | goto out_destroy_data_iodone_queue; | |
834 | ||
4c2d542f | 835 | mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
8018ec08 | 836 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
4c2d542f DC |
837 | if (!mp->m_cil_workqueue) |
838 | goto out_destroy_unwritten; | |
5889608d DC |
839 | |
840 | mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", | |
8018ec08 | 841 | WQ_FREEZABLE, 0, mp->m_fsname); |
5889608d DC |
842 | if (!mp->m_reclaim_workqueue) |
843 | goto out_destroy_cil; | |
844 | ||
845 | mp->m_log_workqueue = alloc_workqueue("xfs-log/%s", | |
b29c70f5 | 846 | WQ_FREEZABLE|WQ_HIGHPRI, 0, mp->m_fsname); |
5889608d DC |
847 | if (!mp->m_log_workqueue) |
848 | goto out_destroy_reclaim; | |
849 | ||
579b62fa | 850 | mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s", |
8018ec08 | 851 | WQ_FREEZABLE, 0, mp->m_fsname); |
579b62fa BF |
852 | if (!mp->m_eofblocks_workqueue) |
853 | goto out_destroy_log; | |
854 | ||
aa6bf01d CH |
855 | return 0; |
856 | ||
579b62fa BF |
857 | out_destroy_log: |
858 | destroy_workqueue(mp->m_log_workqueue); | |
5889608d DC |
859 | out_destroy_reclaim: |
860 | destroy_workqueue(mp->m_reclaim_workqueue); | |
861 | out_destroy_cil: | |
862 | destroy_workqueue(mp->m_cil_workqueue); | |
4c2d542f DC |
863 | out_destroy_unwritten: |
864 | destroy_workqueue(mp->m_unwritten_workqueue); | |
aa6bf01d CH |
865 | out_destroy_data_iodone_queue: |
866 | destroy_workqueue(mp->m_data_workqueue); | |
78c931b8 BF |
867 | out_destroy_buf: |
868 | destroy_workqueue(mp->m_buf_workqueue); | |
aa6bf01d CH |
869 | out: |
870 | return -ENOMEM; | |
871 | } | |
872 | ||
873 | STATIC void | |
874 | xfs_destroy_mount_workqueues( | |
875 | struct xfs_mount *mp) | |
876 | { | |
579b62fa | 877 | destroy_workqueue(mp->m_eofblocks_workqueue); |
5889608d DC |
878 | destroy_workqueue(mp->m_log_workqueue); |
879 | destroy_workqueue(mp->m_reclaim_workqueue); | |
4c2d542f | 880 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d CH |
881 | destroy_workqueue(mp->m_data_workqueue); |
882 | destroy_workqueue(mp->m_unwritten_workqueue); | |
78c931b8 | 883 | destroy_workqueue(mp->m_buf_workqueue); |
aa6bf01d CH |
884 | } |
885 | ||
9aa05000 DC |
886 | /* |
887 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
888 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
889 | * for IO to complete so that we effectively throttle multiple callers to the | |
890 | * rate at which IO is completing. | |
891 | */ | |
892 | void | |
893 | xfs_flush_inodes( | |
894 | struct xfs_mount *mp) | |
895 | { | |
896 | struct super_block *sb = mp->m_super; | |
897 | ||
898 | if (down_read_trylock(&sb->s_umount)) { | |
0dc83bd3 | 899 | sync_inodes_sb(sb); |
9aa05000 DC |
900 | up_read(&sb->s_umount); |
901 | } | |
902 | } | |
903 | ||
bf904248 | 904 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 905 | STATIC struct inode * |
a50cd269 | 906 | xfs_fs_alloc_inode( |
1da177e4 LT |
907 | struct super_block *sb) |
908 | { | |
bf904248 | 909 | BUG(); |
493dca61 | 910 | return NULL; |
1da177e4 LT |
911 | } |
912 | ||
bf904248 | 913 | /* |
99fa8cb3 DC |
914 | * Now that the generic code is guaranteed not to be accessing |
915 | * the linux inode, we can reclaim the inode. | |
bf904248 | 916 | */ |
1da177e4 | 917 | STATIC void |
a50cd269 | 918 | xfs_fs_destroy_inode( |
848ce8f7 | 919 | struct inode *inode) |
1da177e4 | 920 | { |
848ce8f7 CH |
921 | struct xfs_inode *ip = XFS_I(inode); |
922 | ||
cca28fb8 | 923 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
924 | |
925 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 | 926 | |
848ce8f7 CH |
927 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
928 | ||
929 | /* | |
930 | * We should never get here with one of the reclaim flags already set. | |
931 | */ | |
932 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
933 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
934 | ||
935 | /* | |
57817c68 DC |
936 | * We always use background reclaim here because even if the |
937 | * inode is clean, it still may be under IO and hence we have | |
938 | * to take the flush lock. The background reclaim path handles | |
939 | * this more efficiently than we can here, so simply let background | |
940 | * reclaim tear down all inodes. | |
848ce8f7 | 941 | */ |
57817c68 | 942 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
943 | } |
944 | ||
07c8f675 DC |
945 | /* |
946 | * Slab object creation initialisation for the XFS inode. | |
947 | * This covers only the idempotent fields in the XFS inode; | |
948 | * all other fields need to be initialised on allocation | |
b595076a | 949 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
950 | * fields in the xfs inode that left in the initialise state |
951 | * when freeing the inode. | |
952 | */ | |
bf904248 DC |
953 | STATIC void |
954 | xfs_fs_inode_init_once( | |
07c8f675 DC |
955 | void *inode) |
956 | { | |
957 | struct xfs_inode *ip = inode; | |
958 | ||
959 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
960 | |
961 | /* vfs inode */ | |
962 | inode_init_once(VFS_I(ip)); | |
963 | ||
964 | /* xfs inode */ | |
07c8f675 DC |
965 | atomic_set(&ip->i_pincount, 0); |
966 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 | 967 | |
653c60b6 DC |
968 | mrlock_init(&ip->i_mmaplock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
969 | "xfsino", ip->i_ino); | |
07c8f675 DC |
970 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
971 | "xfsino", ip->i_ino); | |
07c8f675 DC |
972 | } |
973 | ||
1da177e4 | 974 | STATIC void |
b57922d9 | 975 | xfs_fs_evict_inode( |
1da177e4 LT |
976 | struct inode *inode) |
977 | { | |
1543d79c | 978 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 979 | |
4f59af75 CH |
980 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
981 | ||
b57922d9 | 982 | trace_xfs_evict_inode(ip); |
cca28fb8 | 983 | |
91b0abe3 | 984 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 985 | clear_inode(inode); |
99fa8cb3 DC |
986 | XFS_STATS_INC(vn_rele); |
987 | XFS_STATS_INC(vn_remove); | |
99fa8cb3 DC |
988 | |
989 | xfs_inactive(ip); | |
56d433e4 | 990 | } |
1da177e4 | 991 | |
5132ba8f DC |
992 | /* |
993 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
994 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
995 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
996 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
997 | * we drop the final reference on. | |
998 | */ | |
999 | STATIC int | |
1000 | xfs_fs_drop_inode( | |
1001 | struct inode *inode) | |
1002 | { | |
1003 | struct xfs_inode *ip = XFS_I(inode); | |
1004 | ||
1005 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
1006 | } | |
1007 | ||
a738159d CH |
1008 | STATIC void |
1009 | xfs_free_fsname( | |
1010 | struct xfs_mount *mp) | |
1011 | { | |
1012 | kfree(mp->m_fsname); | |
1013 | kfree(mp->m_rtname); | |
1014 | kfree(mp->m_logname); | |
1015 | } | |
1016 | ||
1da177e4 | 1017 | STATIC int |
69961a26 | 1018 | xfs_fs_sync_fs( |
1da177e4 LT |
1019 | struct super_block *sb, |
1020 | int wait) | |
1021 | { | |
745f6919 | 1022 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1023 | |
e893bffd | 1024 | /* |
34625c66 | 1025 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1026 | */ |
34625c66 | 1027 | if (!wait) |
69961a26 | 1028 | return 0; |
69961a26 | 1029 | |
34061f5c | 1030 | xfs_log_force(mp, XFS_LOG_SYNC); |
69961a26 | 1031 | if (laptop_mode) { |
1da177e4 LT |
1032 | /* |
1033 | * The disk must be active because we're syncing. | |
f661f1e0 | 1034 | * We schedule log work now (now that the disk is |
1da177e4 LT |
1035 | * active) instead of later (when it might not be). |
1036 | */ | |
f661f1e0 | 1037 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
1038 | } |
1039 | ||
69961a26 | 1040 | return 0; |
1da177e4 LT |
1041 | } |
1042 | ||
1043 | STATIC int | |
a50cd269 | 1044 | xfs_fs_statfs( |
726c3342 | 1045 | struct dentry *dentry, |
1da177e4 LT |
1046 | struct kstatfs *statp) |
1047 | { | |
4ca488eb CH |
1048 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1049 | xfs_sb_t *sbp = &mp->m_sb; | |
2b0143b5 | 1050 | struct xfs_inode *ip = XFS_I(d_inode(dentry)); |
4ca488eb | 1051 | __uint64_t fakeinos, id; |
501ab323 | 1052 | __uint64_t icount; |
e88b64ea | 1053 | __uint64_t ifree; |
0d485ada | 1054 | __uint64_t fdblocks; |
4ca488eb | 1055 | xfs_extlen_t lsize; |
2fe33661 | 1056 | __int64_t ffree; |
4ca488eb CH |
1057 | |
1058 | statp->f_type = XFS_SB_MAGIC; | |
1059 | statp->f_namelen = MAXNAMELEN - 1; | |
1060 | ||
1061 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1062 | statp->f_fsid.val[0] = (u32)id; | |
1063 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1064 | ||
501ab323 | 1065 | icount = percpu_counter_sum(&mp->m_icount); |
e88b64ea | 1066 | ifree = percpu_counter_sum(&mp->m_ifree); |
0d485ada | 1067 | fdblocks = percpu_counter_sum(&mp->m_fdblocks); |
4ca488eb CH |
1068 | |
1069 | spin_lock(&mp->m_sb_lock); | |
1070 | statp->f_bsize = sbp->sb_blocksize; | |
1071 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1072 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
0d485ada DC |
1073 | spin_unlock(&mp->m_sb_lock); |
1074 | ||
1075 | statp->f_bfree = fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1076 | statp->f_bavail = statp->f_bfree; | |
1077 | ||
4ca488eb | 1078 | fakeinos = statp->f_bfree << sbp->sb_inopblog; |
501ab323 | 1079 | statp->f_files = MIN(icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); |
4ca488eb | 1080 | if (mp->m_maxicount) |
a19d9f88 CH |
1081 | statp->f_files = min_t(typeof(statp->f_files), |
1082 | statp->f_files, | |
1083 | mp->m_maxicount); | |
2fe33661 | 1084 | |
01f9882e ES |
1085 | /* If sb_icount overshot maxicount, report actual allocation */ |
1086 | statp->f_files = max_t(typeof(statp->f_files), | |
1087 | statp->f_files, | |
1088 | sbp->sb_icount); | |
1089 | ||
2fe33661 | 1090 | /* make sure statp->f_ffree does not underflow */ |
e88b64ea | 1091 | ffree = statp->f_files - (icount - ifree); |
2fe33661 SB |
1092 | statp->f_ffree = max_t(__int64_t, ffree, 0); |
1093 | ||
4ca488eb | 1094 | |
da5bf95e | 1095 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
83e782e1 CS |
1096 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
1097 | (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) | |
7d095257 | 1098 | xfs_qm_statvfs(ip, statp); |
4ca488eb | 1099 | return 0; |
1da177e4 LT |
1100 | } |
1101 | ||
d5db0f97 ES |
1102 | STATIC void |
1103 | xfs_save_resvblks(struct xfs_mount *mp) | |
1104 | { | |
1105 | __uint64_t resblks = 0; | |
1106 | ||
1107 | mp->m_resblks_save = mp->m_resblks; | |
1108 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1109 | } | |
1110 | ||
1111 | STATIC void | |
1112 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1113 | { | |
1114 | __uint64_t resblks; | |
1115 | ||
1116 | if (mp->m_resblks_save) { | |
1117 | resblks = mp->m_resblks_save; | |
1118 | mp->m_resblks_save = 0; | |
1119 | } else | |
1120 | resblks = xfs_default_resblks(mp); | |
1121 | ||
1122 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1123 | } | |
1124 | ||
c7eea6f7 DC |
1125 | /* |
1126 | * Trigger writeback of all the dirty metadata in the file system. | |
1127 | * | |
1128 | * This ensures that the metadata is written to their location on disk rather | |
1129 | * than just existing in transactions in the log. This means after a quiesce | |
c75921a7 DC |
1130 | * there is no log replay required to write the inodes to disk - this is the |
1131 | * primary difference between a sync and a quiesce. | |
c7eea6f7 | 1132 | * |
c75921a7 DC |
1133 | * Note: xfs_log_quiesce() stops background log work - the callers must ensure |
1134 | * it is started again when appropriate. | |
c7eea6f7 | 1135 | */ |
632b89e8 | 1136 | static void |
c7eea6f7 DC |
1137 | xfs_quiesce_attr( |
1138 | struct xfs_mount *mp) | |
1139 | { | |
1140 | int error = 0; | |
1141 | ||
1142 | /* wait for all modifications to complete */ | |
1143 | while (atomic_read(&mp->m_active_trans) > 0) | |
1144 | delay(100); | |
1145 | ||
1146 | /* force the log to unpin objects from the now complete transactions */ | |
1147 | xfs_log_force(mp, XFS_LOG_SYNC); | |
1148 | ||
1149 | /* reclaim inodes to do any IO before the freeze completes */ | |
1150 | xfs_reclaim_inodes(mp, 0); | |
1151 | xfs_reclaim_inodes(mp, SYNC_WAIT); | |
1152 | ||
c7eea6f7 DC |
1153 | /* Push the superblock and write an unmount record */ |
1154 | error = xfs_log_sbcount(mp); | |
1155 | if (error) | |
1156 | xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " | |
1157 | "Frozen image may not be consistent."); | |
c7eea6f7 | 1158 | /* |
c75921a7 DC |
1159 | * Just warn here till VFS can correctly support |
1160 | * read-only remount without racing. | |
c7eea6f7 | 1161 | */ |
c75921a7 | 1162 | WARN_ON(atomic_read(&mp->m_active_trans) != 0); |
c7eea6f7 | 1163 | |
c75921a7 | 1164 | xfs_log_quiesce(mp); |
c7eea6f7 DC |
1165 | } |
1166 | ||
1da177e4 | 1167 | STATIC int |
a50cd269 | 1168 | xfs_fs_remount( |
1da177e4 LT |
1169 | struct super_block *sb, |
1170 | int *flags, | |
1171 | char *options) | |
1172 | { | |
745f6919 | 1173 | struct xfs_mount *mp = XFS_M(sb); |
9de67c3b | 1174 | xfs_sb_t *sbp = &mp->m_sb; |
62a877e3 CH |
1175 | substring_t args[MAX_OPT_ARGS]; |
1176 | char *p; | |
7884bc86 | 1177 | int error; |
1da177e4 | 1178 | |
02b9984d | 1179 | sync_filesystem(sb); |
62a877e3 CH |
1180 | while ((p = strsep(&options, ",")) != NULL) { |
1181 | int token; | |
bdd907ba | 1182 | |
62a877e3 CH |
1183 | if (!*p) |
1184 | continue; | |
48b62a1a | 1185 | |
62a877e3 CH |
1186 | token = match_token(p, tokens, args); |
1187 | switch (token) { | |
1188 | case Opt_barrier: | |
48b62a1a | 1189 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1190 | break; |
1191 | case Opt_nobarrier: | |
48b62a1a | 1192 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 | 1193 | break; |
c3a58fec | 1194 | case Opt_inode64: |
9de67c3b | 1195 | mp->m_maxagi = xfs_set_inode64(mp, sbp->sb_agcount); |
c3a58fec | 1196 | break; |
2ea03929 | 1197 | case Opt_inode32: |
9de67c3b | 1198 | mp->m_maxagi = xfs_set_inode32(mp, sbp->sb_agcount); |
2ea03929 | 1199 | break; |
62a877e3 | 1200 | default: |
6efdf281 CH |
1201 | /* |
1202 | * Logically we would return an error here to prevent | |
1203 | * users from believing they might have changed | |
1204 | * mount options using remount which can't be changed. | |
1205 | * | |
1206 | * But unfortunately mount(8) adds all options from | |
1207 | * mtab and fstab to the mount arguments in some cases | |
1208 | * so we can't blindly reject options, but have to | |
1209 | * check for each specified option if it actually | |
1210 | * differs from the currently set option and only | |
1211 | * reject it if that's the case. | |
1212 | * | |
1213 | * Until that is implemented we return success for | |
1214 | * every remount request, and silently ignore all | |
1215 | * options that we can't actually change. | |
1216 | */ | |
1217 | #if 0 | |
4f10700a | 1218 | xfs_info(mp, |
08e96e1a | 1219 | "mount option \"%s\" not supported for remount", p); |
62a877e3 | 1220 | return -EINVAL; |
6efdf281 | 1221 | #else |
6c5e51da | 1222 | break; |
6efdf281 | 1223 | #endif |
48b62a1a | 1224 | } |
62a877e3 CH |
1225 | } |
1226 | ||
7884bc86 | 1227 | /* ro -> rw */ |
62a877e3 | 1228 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
bbe051c8 ES |
1229 | if (mp->m_flags & XFS_MOUNT_NORECOVERY) { |
1230 | xfs_warn(mp, | |
1231 | "ro->rw transition prohibited on norecovery mount"); | |
1232 | return -EINVAL; | |
1233 | } | |
1234 | ||
62a877e3 | 1235 | mp->m_flags &= ~XFS_MOUNT_RDONLY; |
7884bc86 CH |
1236 | |
1237 | /* | |
1238 | * If this is the first remount to writeable state we | |
1239 | * might have some superblock changes to update. | |
1240 | */ | |
61e63ecb DC |
1241 | if (mp->m_update_sb) { |
1242 | error = xfs_sync_sb(mp, false); | |
7884bc86 | 1243 | if (error) { |
4f10700a | 1244 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1245 | return error; |
1246 | } | |
61e63ecb | 1247 | mp->m_update_sb = false; |
7884bc86 | 1248 | } |
cbe132a8 DC |
1249 | |
1250 | /* | |
1251 | * Fill out the reserve pool if it is empty. Use the stashed | |
1252 | * value if it is non-zero, otherwise go with the default. | |
1253 | */ | |
d5db0f97 | 1254 | xfs_restore_resvblks(mp); |
f661f1e0 | 1255 | xfs_log_work_queue(mp); |
62a877e3 CH |
1256 | } |
1257 | ||
1258 | /* rw -> ro */ | |
1259 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 | 1260 | /* |
34061f5c DC |
1261 | * Before we sync the metadata, we need to free up the reserve |
1262 | * block pool so that the used block count in the superblock on | |
1263 | * disk is correct at the end of the remount. Stash the current | |
1264 | * reserve pool size so that if we get remounted rw, we can | |
1265 | * return it to the same size. | |
cbe132a8 | 1266 | */ |
d5db0f97 | 1267 | xfs_save_resvblks(mp); |
76bf105c | 1268 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1269 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1270 | } | |
1271 | ||
62a877e3 | 1272 | return 0; |
1da177e4 LT |
1273 | } |
1274 | ||
9909c4aa CH |
1275 | /* |
1276 | * Second stage of a freeze. The data is already frozen so we only | |
61e63ecb DC |
1277 | * need to take care of the metadata. Once that's done sync the superblock |
1278 | * to the log to dirty it in case of a crash while frozen. This ensures that we | |
1279 | * will recover the unlinked inode lists on the next mount. | |
9909c4aa | 1280 | */ |
c4be0c1d TS |
1281 | STATIC int |
1282 | xfs_fs_freeze( | |
1da177e4 LT |
1283 | struct super_block *sb) |
1284 | { | |
9909c4aa CH |
1285 | struct xfs_mount *mp = XFS_M(sb); |
1286 | ||
d5db0f97 | 1287 | xfs_save_resvblks(mp); |
76bf105c | 1288 | xfs_quiesce_attr(mp); |
61e63ecb | 1289 | return xfs_sync_sb(mp, true); |
1da177e4 LT |
1290 | } |
1291 | ||
d5db0f97 ES |
1292 | STATIC int |
1293 | xfs_fs_unfreeze( | |
1294 | struct super_block *sb) | |
1295 | { | |
1296 | struct xfs_mount *mp = XFS_M(sb); | |
1297 | ||
1298 | xfs_restore_resvblks(mp); | |
f661f1e0 | 1299 | xfs_log_work_queue(mp); |
d5db0f97 ES |
1300 | return 0; |
1301 | } | |
1302 | ||
1da177e4 | 1303 | STATIC int |
a50cd269 | 1304 | xfs_fs_show_options( |
1da177e4 | 1305 | struct seq_file *m, |
34c80b1d | 1306 | struct dentry *root) |
1da177e4 | 1307 | { |
2451337d | 1308 | return xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1309 | } |
1310 | ||
f8f15e42 CH |
1311 | /* |
1312 | * This function fills in xfs_mount_t fields based on mount args. | |
1313 | * Note: the superblock _has_ now been read in. | |
1314 | */ | |
1315 | STATIC int | |
1316 | xfs_finish_flags( | |
f8f15e42 CH |
1317 | struct xfs_mount *mp) |
1318 | { | |
1319 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1320 | ||
025dfdaf | 1321 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1322 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1323 | if (mp->m_logbsize <= 0 && |
1324 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1325 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1326 | } else if (mp->m_logbsize > 0 && |
1327 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1328 | xfs_warn(mp, |
1329 | "logbuf size must be greater than or equal to log stripe size"); | |
2451337d | 1330 | return -EINVAL; |
f8f15e42 CH |
1331 | } |
1332 | } else { | |
1333 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1334 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1335 | xfs_warn(mp, |
1336 | "logbuf size for version 1 logs must be 16K or 32K"); | |
2451337d | 1337 | return -EINVAL; |
f8f15e42 CH |
1338 | } |
1339 | } | |
1340 | ||
d3eaace8 DC |
1341 | /* |
1342 | * V5 filesystems always use attr2 format for attributes. | |
1343 | */ | |
1344 | if (xfs_sb_version_hascrc(&mp->m_sb) && | |
1345 | (mp->m_flags & XFS_MOUNT_NOATTR2)) { | |
1346 | xfs_warn(mp, | |
1347 | "Cannot mount a V5 filesystem as %s. %s is always enabled for V5 filesystems.", | |
1348 | MNTOPT_NOATTR2, MNTOPT_ATTR2); | |
2451337d | 1349 | return -EINVAL; |
d3eaace8 DC |
1350 | } |
1351 | ||
f8f15e42 CH |
1352 | /* |
1353 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1354 | * told by noattr2 to turn it off | |
1355 | */ | |
1356 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1357 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1358 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1359 | ||
1360 | /* | |
1361 | * prohibit r/w mounts of read-only filesystems | |
1362 | */ | |
1363 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1364 | xfs_warn(mp, |
1365 | "cannot mount a read-only filesystem as read-write"); | |
2451337d | 1366 | return -EROFS; |
f8f15e42 CH |
1367 | } |
1368 | ||
d892d586 CS |
1369 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
1370 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && | |
1371 | !xfs_sb_version_has_pquotino(&mp->m_sb)) { | |
1372 | xfs_warn(mp, | |
1373 | "Super block does not support project and group quota together"); | |
2451337d | 1374 | return -EINVAL; |
d892d586 CS |
1375 | } |
1376 | ||
f8f15e42 CH |
1377 | return 0; |
1378 | } | |
1379 | ||
5681ca40 DC |
1380 | static int |
1381 | xfs_init_percpu_counters( | |
1382 | struct xfs_mount *mp) | |
1383 | { | |
1384 | int error; | |
1385 | ||
1386 | error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL); | |
1387 | if (error) | |
5e9383f9 | 1388 | return -ENOMEM; |
5681ca40 DC |
1389 | |
1390 | error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL); | |
1391 | if (error) | |
1392 | goto free_icount; | |
1393 | ||
1394 | error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL); | |
1395 | if (error) | |
1396 | goto free_ifree; | |
1397 | ||
1398 | return 0; | |
1399 | ||
1400 | free_ifree: | |
1401 | percpu_counter_destroy(&mp->m_ifree); | |
1402 | free_icount: | |
1403 | percpu_counter_destroy(&mp->m_icount); | |
1404 | return -ENOMEM; | |
1405 | } | |
1406 | ||
1407 | void | |
1408 | xfs_reinit_percpu_counters( | |
1409 | struct xfs_mount *mp) | |
1410 | { | |
1411 | percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount); | |
1412 | percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree); | |
1413 | percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks); | |
1414 | } | |
1415 | ||
1416 | static void | |
1417 | xfs_destroy_percpu_counters( | |
1418 | struct xfs_mount *mp) | |
1419 | { | |
1420 | percpu_counter_destroy(&mp->m_icount); | |
1421 | percpu_counter_destroy(&mp->m_ifree); | |
1422 | percpu_counter_destroy(&mp->m_fdblocks); | |
1423 | } | |
1424 | ||
1da177e4 | 1425 | STATIC int |
a50cd269 | 1426 | xfs_fs_fill_super( |
1da177e4 LT |
1427 | struct super_block *sb, |
1428 | void *data, | |
1429 | int silent) | |
1430 | { | |
f3dcc13f | 1431 | struct inode *root; |
745f6919 | 1432 | struct xfs_mount *mp = NULL; |
2451337d | 1433 | int flags = 0, error = -ENOMEM; |
bdd907ba | 1434 | |
c962fb79 CH |
1435 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1436 | if (!mp) | |
9d565ffa | 1437 | goto out; |
1da177e4 | 1438 | |
c962fb79 | 1439 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1440 | mutex_init(&mp->m_growlock); |
1441 | atomic_set(&mp->m_active_trans, 0); | |
7e18530b | 1442 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
579b62fa | 1443 | INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker); |
e3aed1a0 | 1444 | mp->m_kobj.kobject.kset = xfs_kset; |
74394496 | 1445 | |
b267ce99 CH |
1446 | mp->m_super = sb; |
1447 | sb->s_fs_info = mp; | |
1da177e4 | 1448 | |
288699fe | 1449 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1450 | if (error) |
9d565ffa | 1451 | goto out_free_fsname; |
1da177e4 LT |
1452 | |
1453 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1454 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1455 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1456 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1457 | sb->s_qcop = &xfs_quotactl_operations; |
17ef4fdd | 1458 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; |
fcafb71b | 1459 | #endif |
a50cd269 | 1460 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1461 | |
9d565ffa | 1462 | if (silent) |
f8f15e42 CH |
1463 | flags |= XFS_MFSI_QUIET; |
1464 | ||
9d565ffa | 1465 | error = xfs_open_devices(mp); |
19f354d4 | 1466 | if (error) |
288699fe | 1467 | goto out_free_fsname; |
f8f15e42 | 1468 | |
2451337d | 1469 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1470 | if (error) |
1471 | goto out_close_devices; | |
c962fb79 | 1472 | |
5681ca40 | 1473 | error = xfs_init_percpu_counters(mp); |
aa6bf01d CH |
1474 | if (error) |
1475 | goto out_destroy_workqueues; | |
1476 | ||
f8f15e42 CH |
1477 | error = xfs_readsb(mp, flags); |
1478 | if (error) | |
9d565ffa CH |
1479 | goto out_destroy_counters; |
1480 | ||
1481 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1482 | if (error) |
effa2eda | 1483 | goto out_free_sb; |
f8f15e42 | 1484 | |
e34b562c | 1485 | error = xfs_setup_devices(mp); |
19f354d4 | 1486 | if (error) |
effa2eda | 1487 | goto out_free_sb; |
f8f15e42 | 1488 | |
f8f15e42 CH |
1489 | error = xfs_filestream_mount(mp); |
1490 | if (error) | |
effa2eda | 1491 | goto out_free_sb; |
f8f15e42 | 1492 | |
704b2907 DC |
1493 | /* |
1494 | * we must configure the block size in the superblock before we run the | |
1495 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1496 | */ |
4ca488eb CH |
1497 | sb->s_magic = XFS_SB_MAGIC; |
1498 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1499 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1500 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1501 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1502 | sb->s_time_gran = 1; |
1503 | set_posix_acl_flag(sb); | |
1504 | ||
dc037ad7 DC |
1505 | /* version 5 superblocks support inode version counters. */ |
1506 | if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) | |
1507 | sb->s_flags |= MS_I_VERSION; | |
1508 | ||
cbe4dab1 DC |
1509 | if (mp->m_flags & XFS_MOUNT_DAX) { |
1510 | xfs_warn(mp, | |
1511 | "DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); | |
1512 | if (sb->s_blocksize != PAGE_SIZE) { | |
1513 | xfs_alert(mp, | |
1514 | "Filesystem block size invalid for DAX Turning DAX off."); | |
1515 | mp->m_flags &= ~XFS_MOUNT_DAX; | |
1516 | } else if (!sb->s_bdev->bd_disk->fops->direct_access) { | |
1517 | xfs_alert(mp, | |
1518 | "Block device does not support DAX Turning DAX off."); | |
1519 | mp->m_flags &= ~XFS_MOUNT_DAX; | |
1520 | } | |
1521 | } | |
1522 | ||
1b867d3a BF |
1523 | if (xfs_sb_version_hassparseinodes(&mp->m_sb)) |
1524 | xfs_alert(mp, | |
1525 | "EXPERIMENTAL sparse inode feature enabled. Use at your own risk!"); | |
1526 | ||
8a00ebe4 | 1527 | error = xfs_mountfs(mp); |
2bcf6e97 | 1528 | if (error) |
7e18530b | 1529 | goto out_filestream_unmount; |
704b2907 | 1530 | |
01651646 | 1531 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1532 | if (!root) { |
2451337d | 1533 | error = -ENOENT; |
8a00ebe4 | 1534 | goto out_unmount; |
cbc89dcf | 1535 | } |
48fde701 | 1536 | sb->s_root = d_make_root(root); |
f3dcc13f | 1537 | if (!sb->s_root) { |
2451337d | 1538 | error = -ENOMEM; |
8a00ebe4 | 1539 | goto out_unmount; |
1da177e4 | 1540 | } |
74394496 | 1541 | |
1da177e4 | 1542 | return 0; |
33c7a2bc | 1543 | |
7e18530b | 1544 | out_filestream_unmount: |
120226c1 | 1545 | xfs_filestream_unmount(mp); |
effa2eda CH |
1546 | out_free_sb: |
1547 | xfs_freesb(mp); | |
9d565ffa | 1548 | out_destroy_counters: |
5681ca40 | 1549 | xfs_destroy_percpu_counters(mp); |
aa6bf01d CH |
1550 | out_destroy_workqueues: |
1551 | xfs_destroy_mount_workqueues(mp); | |
61ba35de | 1552 | out_close_devices: |
19f354d4 | 1553 | xfs_close_devices(mp); |
9d565ffa CH |
1554 | out_free_fsname: |
1555 | xfs_free_fsname(mp); | |
c962fb79 | 1556 | kfree(mp); |
9d565ffa | 1557 | out: |
2451337d | 1558 | return error; |
f8f15e42 | 1559 | |
2bcf6e97 | 1560 | out_unmount: |
e48ad316 | 1561 | xfs_filestream_unmount(mp); |
19f354d4 | 1562 | xfs_unmountfs(mp); |
6203300e | 1563 | goto out_free_sb; |
1da177e4 LT |
1564 | } |
1565 | ||
5681ca40 DC |
1566 | STATIC void |
1567 | xfs_fs_put_super( | |
1568 | struct super_block *sb) | |
1569 | { | |
1570 | struct xfs_mount *mp = XFS_M(sb); | |
1571 | ||
4225441a | 1572 | xfs_notice(mp, "Unmounting Filesystem"); |
5681ca40 DC |
1573 | xfs_filestream_unmount(mp); |
1574 | xfs_unmountfs(mp); | |
1575 | ||
1576 | xfs_freesb(mp); | |
1577 | xfs_destroy_percpu_counters(mp); | |
1578 | xfs_destroy_mount_workqueues(mp); | |
1579 | xfs_close_devices(mp); | |
1580 | xfs_free_fsname(mp); | |
1581 | kfree(mp); | |
1582 | } | |
1583 | ||
152a0836 AV |
1584 | STATIC struct dentry * |
1585 | xfs_fs_mount( | |
1da177e4 LT |
1586 | struct file_system_type *fs_type, |
1587 | int flags, | |
1588 | const char *dev_name, | |
152a0836 | 1589 | void *data) |
1da177e4 | 1590 | { |
152a0836 | 1591 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1592 | } |
1593 | ||
0a234c6d | 1594 | static long |
8daaa831 | 1595 | xfs_fs_nr_cached_objects( |
9b17c623 | 1596 | struct super_block *sb, |
4101b624 | 1597 | struct shrink_control *sc) |
8daaa831 DC |
1598 | { |
1599 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1600 | } | |
1601 | ||
0a234c6d | 1602 | static long |
8daaa831 DC |
1603 | xfs_fs_free_cached_objects( |
1604 | struct super_block *sb, | |
4101b624 | 1605 | struct shrink_control *sc) |
8daaa831 | 1606 | { |
4101b624 | 1607 | return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan); |
8daaa831 DC |
1608 | } |
1609 | ||
b87221de | 1610 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1611 | .alloc_inode = xfs_fs_alloc_inode, |
1612 | .destroy_inode = xfs_fs_destroy_inode, | |
b57922d9 | 1613 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1614 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1615 | .put_super = xfs_fs_put_super, |
69961a26 | 1616 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1617 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1618 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1619 | .statfs = xfs_fs_statfs, |
1620 | .remount_fs = xfs_fs_remount, | |
1621 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1622 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1623 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1624 | }; |
1625 | ||
5085b607 | 1626 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1627 | .owner = THIS_MODULE, |
1628 | .name = "xfs", | |
152a0836 | 1629 | .mount = xfs_fs_mount, |
1da177e4 LT |
1630 | .kill_sb = kill_block_super, |
1631 | .fs_flags = FS_REQUIRES_DEV, | |
1632 | }; | |
7f78e035 | 1633 | MODULE_ALIAS_FS("xfs"); |
1da177e4 | 1634 | |
9f8868ff CH |
1635 | STATIC int __init |
1636 | xfs_init_zones(void) | |
1637 | { | |
9f8868ff CH |
1638 | |
1639 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1640 | if (!xfs_ioend_zone) | |
bf904248 | 1641 | goto out; |
9f8868ff CH |
1642 | |
1643 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1644 | xfs_ioend_zone); | |
1645 | if (!xfs_ioend_pool) | |
1646 | goto out_destroy_ioend_zone; | |
1647 | ||
1648 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1649 | "xfs_log_ticket"); | |
1650 | if (!xfs_log_ticket_zone) | |
1651 | goto out_destroy_ioend_pool; | |
1652 | ||
1653 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1654 | "xfs_bmap_free_item"); | |
1655 | if (!xfs_bmap_free_item_zone) | |
1656 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1657 | |
9f8868ff CH |
1658 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1659 | "xfs_btree_cur"); | |
1660 | if (!xfs_btree_cur_zone) | |
1661 | goto out_destroy_bmap_free_item_zone; | |
1662 | ||
1663 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1664 | "xfs_da_state"); | |
1665 | if (!xfs_da_state_zone) | |
1666 | goto out_destroy_btree_cur_zone; | |
1667 | ||
9f8868ff CH |
1668 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
1669 | if (!xfs_ifork_zone) | |
1d9025e5 | 1670 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1671 | |
1672 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1673 | if (!xfs_trans_zone) | |
1674 | goto out_destroy_ifork_zone; | |
1675 | ||
e98c414f CH |
1676 | xfs_log_item_desc_zone = |
1677 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1678 | "xfs_log_item_desc"); | |
1679 | if (!xfs_log_item_desc_zone) | |
1680 | goto out_destroy_trans_zone; | |
1681 | ||
9f8868ff CH |
1682 | /* |
1683 | * The size of the zone allocated buf log item is the maximum | |
1684 | * size possible under XFS. This wastes a little bit of memory, | |
1685 | * but it is much faster. | |
1686 | */ | |
77c1a08f DC |
1687 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1688 | "xfs_buf_item"); | |
9f8868ff | 1689 | if (!xfs_buf_item_zone) |
e98c414f | 1690 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1691 | |
1692 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1693 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1694 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1695 | if (!xfs_efd_zone) | |
1696 | goto out_destroy_buf_item_zone; | |
1697 | ||
1698 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1699 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1700 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1701 | if (!xfs_efi_zone) | |
1702 | goto out_destroy_efd_zone; | |
1703 | ||
1704 | xfs_inode_zone = | |
1705 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1706 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1707 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1708 | if (!xfs_inode_zone) |
1709 | goto out_destroy_efi_zone; | |
1710 | ||
1711 | xfs_ili_zone = | |
1712 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1713 | KM_ZONE_SPREAD, NULL); | |
1714 | if (!xfs_ili_zone) | |
1715 | goto out_destroy_inode_zone; | |
3ebe7d2d DC |
1716 | xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item), |
1717 | "xfs_icr"); | |
1718 | if (!xfs_icreate_zone) | |
1719 | goto out_destroy_ili_zone; | |
9f8868ff | 1720 | |
9f8868ff CH |
1721 | return 0; |
1722 | ||
3ebe7d2d DC |
1723 | out_destroy_ili_zone: |
1724 | kmem_zone_destroy(xfs_ili_zone); | |
9f8868ff CH |
1725 | out_destroy_inode_zone: |
1726 | kmem_zone_destroy(xfs_inode_zone); | |
1727 | out_destroy_efi_zone: | |
1728 | kmem_zone_destroy(xfs_efi_zone); | |
1729 | out_destroy_efd_zone: | |
1730 | kmem_zone_destroy(xfs_efd_zone); | |
1731 | out_destroy_buf_item_zone: | |
1732 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1733 | out_destroy_log_item_desc_zone: |
1734 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1735 | out_destroy_trans_zone: |
1736 | kmem_zone_destroy(xfs_trans_zone); | |
1737 | out_destroy_ifork_zone: | |
1738 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1739 | out_destroy_da_state_zone: |
1740 | kmem_zone_destroy(xfs_da_state_zone); | |
1741 | out_destroy_btree_cur_zone: | |
1742 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1743 | out_destroy_bmap_free_item_zone: | |
1744 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1745 | out_destroy_log_ticket_zone: | |
1746 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1747 | out_destroy_ioend_pool: | |
1748 | mempool_destroy(xfs_ioend_pool); | |
1749 | out_destroy_ioend_zone: | |
1750 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1751 | out: |
1752 | return -ENOMEM; | |
1753 | } | |
1754 | ||
1755 | STATIC void | |
1756 | xfs_destroy_zones(void) | |
1757 | { | |
8c0a8537 KS |
1758 | /* |
1759 | * Make sure all delayed rcu free are flushed before we | |
1760 | * destroy caches. | |
1761 | */ | |
1762 | rcu_barrier(); | |
3ebe7d2d | 1763 | kmem_zone_destroy(xfs_icreate_zone); |
9f8868ff CH |
1764 | kmem_zone_destroy(xfs_ili_zone); |
1765 | kmem_zone_destroy(xfs_inode_zone); | |
1766 | kmem_zone_destroy(xfs_efi_zone); | |
1767 | kmem_zone_destroy(xfs_efd_zone); | |
1768 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1769 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1770 | kmem_zone_destroy(xfs_trans_zone); |
1771 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1772 | kmem_zone_destroy(xfs_da_state_zone); |
1773 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1774 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1775 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1776 | mempool_destroy(xfs_ioend_pool); | |
1777 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1778 | |
1779 | } | |
1da177e4 | 1780 | |
0bf6a5bd DC |
1781 | STATIC int __init |
1782 | xfs_init_workqueues(void) | |
1783 | { | |
c999a223 DC |
1784 | /* |
1785 | * The allocation workqueue can be used in memory reclaim situations | |
1786 | * (writepage path), and parallelism is only limited by the number of | |
1787 | * AGs in all the filesystems mounted. Hence use the default large | |
1788 | * max_active value for this workqueue. | |
1789 | */ | |
8018ec08 BF |
1790 | xfs_alloc_wq = alloc_workqueue("xfsalloc", |
1791 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0); | |
c999a223 | 1792 | if (!xfs_alloc_wq) |
5889608d | 1793 | return -ENOMEM; |
c999a223 | 1794 | |
0bf6a5bd | 1795 | return 0; |
0bf6a5bd DC |
1796 | } |
1797 | ||
39411f81 | 1798 | STATIC void |
0bf6a5bd DC |
1799 | xfs_destroy_workqueues(void) |
1800 | { | |
c999a223 | 1801 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1802 | } |
1803 | ||
1da177e4 | 1804 | STATIC int __init |
9f8868ff | 1805 | init_xfs_fs(void) |
1da177e4 LT |
1806 | { |
1807 | int error; | |
1da177e4 | 1808 | |
65795910 CH |
1809 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1810 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1811 | |
9f8868ff | 1812 | xfs_dir_startup(); |
1da177e4 | 1813 | |
8758280f | 1814 | error = xfs_init_zones(); |
9f8868ff CH |
1815 | if (error) |
1816 | goto out; | |
1817 | ||
0bf6a5bd | 1818 | error = xfs_init_workqueues(); |
9f8868ff | 1819 | if (error) |
0b1b213f | 1820 | goto out_destroy_zones; |
9f8868ff | 1821 | |
0bf6a5bd DC |
1822 | error = xfs_mru_cache_init(); |
1823 | if (error) | |
1824 | goto out_destroy_wq; | |
1825 | ||
ce8e922c | 1826 | error = xfs_buf_init(); |
9f8868ff | 1827 | if (error) |
1919adda | 1828 | goto out_mru_cache_uninit; |
9f8868ff CH |
1829 | |
1830 | error = xfs_init_procfs(); | |
1831 | if (error) | |
1832 | goto out_buf_terminate; | |
1833 | ||
1834 | error = xfs_sysctl_register(); | |
1835 | if (error) | |
1836 | goto out_cleanup_procfs; | |
1da177e4 | 1837 | |
3d871226 BF |
1838 | xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); |
1839 | if (!xfs_kset) { | |
1840 | error = -ENOMEM; | |
1841 | goto out_sysctl_unregister;; | |
1842 | } | |
1843 | ||
65b65735 BF |
1844 | #ifdef DEBUG |
1845 | xfs_dbg_kobj.kobject.kset = xfs_kset; | |
1846 | error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); | |
a05931ce | 1847 | if (error) |
3d871226 | 1848 | goto out_kset_unregister; |
65b65735 BF |
1849 | #endif |
1850 | ||
1851 | error = xfs_qm_init(); | |
1852 | if (error) | |
1853 | goto out_remove_kobj; | |
1da177e4 LT |
1854 | |
1855 | error = register_filesystem(&xfs_fs_type); | |
1856 | if (error) | |
a05931ce | 1857 | goto out_qm_exit; |
1da177e4 LT |
1858 | return 0; |
1859 | ||
a05931ce CH |
1860 | out_qm_exit: |
1861 | xfs_qm_exit(); | |
65b65735 BF |
1862 | out_remove_kobj: |
1863 | #ifdef DEBUG | |
1864 | xfs_sysfs_del(&xfs_dbg_kobj); | |
3d871226 | 1865 | out_kset_unregister: |
65b65735 | 1866 | #endif |
3d871226 | 1867 | kset_unregister(xfs_kset); |
9f8868ff CH |
1868 | out_sysctl_unregister: |
1869 | xfs_sysctl_unregister(); | |
1870 | out_cleanup_procfs: | |
1871 | xfs_cleanup_procfs(); | |
1872 | out_buf_terminate: | |
ce8e922c | 1873 | xfs_buf_terminate(); |
9f8868ff CH |
1874 | out_mru_cache_uninit: |
1875 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1876 | out_destroy_wq: |
1877 | xfs_destroy_workqueues(); | |
9f8868ff | 1878 | out_destroy_zones: |
8758280f | 1879 | xfs_destroy_zones(); |
9f8868ff | 1880 | out: |
1da177e4 LT |
1881 | return error; |
1882 | } | |
1883 | ||
1884 | STATIC void __exit | |
9f8868ff | 1885 | exit_xfs_fs(void) |
1da177e4 | 1886 | { |
a05931ce | 1887 | xfs_qm_exit(); |
1da177e4 | 1888 | unregister_filesystem(&xfs_fs_type); |
65b65735 BF |
1889 | #ifdef DEBUG |
1890 | xfs_sysfs_del(&xfs_dbg_kobj); | |
1891 | #endif | |
3d871226 | 1892 | kset_unregister(xfs_kset); |
9f8868ff CH |
1893 | xfs_sysctl_unregister(); |
1894 | xfs_cleanup_procfs(); | |
ce8e922c | 1895 | xfs_buf_terminate(); |
9f8868ff | 1896 | xfs_mru_cache_uninit(); |
0bf6a5bd | 1897 | xfs_destroy_workqueues(); |
8758280f | 1898 | xfs_destroy_zones(); |
1da177e4 LT |
1899 | } |
1900 | ||
1901 | module_init(init_xfs_fs); | |
1902 | module_exit(exit_xfs_fs); | |
1903 | ||
1904 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1905 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1906 | MODULE_LICENSE("GPL"); |