Commit | Line | Data |
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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 | |
62a877e3 CH |
115 | /* |
116 | * Table driven mount option parser. | |
117 | * | |
118 | * Currently only used for remount, but it will be used for mount | |
119 | * in the future, too. | |
120 | */ | |
121 | enum { | |
2ea03929 CM |
122 | Opt_barrier, |
123 | Opt_nobarrier, | |
124 | Opt_inode64, | |
125 | Opt_inode32, | |
126 | Opt_err | |
62a877e3 CH |
127 | }; |
128 | ||
a447c093 | 129 | static const match_table_t tokens = { |
62a877e3 CH |
130 | {Opt_barrier, "barrier"}, |
131 | {Opt_nobarrier, "nobarrier"}, | |
c3a58fec | 132 | {Opt_inode64, "inode64"}, |
2ea03929 | 133 | {Opt_inode32, "inode32"}, |
62a877e3 CH |
134 | {Opt_err, NULL} |
135 | }; | |
136 | ||
137 | ||
a67d7c5f | 138 | STATIC unsigned long |
a17164e5 | 139 | suffix_kstrtoint(char *s, unsigned int base, int *res) |
a67d7c5f | 140 | { |
a17164e5 | 141 | int last, shift_left_factor = 0, _res; |
a67d7c5f DC |
142 | char *value = s; |
143 | ||
144 | last = strlen(value) - 1; | |
145 | if (value[last] == 'K' || value[last] == 'k') { | |
146 | shift_left_factor = 10; | |
147 | value[last] = '\0'; | |
148 | } | |
149 | if (value[last] == 'M' || value[last] == 'm') { | |
150 | shift_left_factor = 20; | |
151 | value[last] = '\0'; | |
152 | } | |
153 | if (value[last] == 'G' || value[last] == 'g') { | |
154 | shift_left_factor = 30; | |
155 | value[last] = '\0'; | |
156 | } | |
157 | ||
a17164e5 AP |
158 | if (kstrtoint(s, base, &_res)) |
159 | return -EINVAL; | |
160 | *res = _res << shift_left_factor; | |
161 | return 0; | |
a67d7c5f DC |
162 | } |
163 | ||
9d565ffa CH |
164 | /* |
165 | * This function fills in xfs_mount_t fields based on mount args. | |
166 | * Note: the superblock has _not_ yet been read in. | |
167 | * | |
168 | * Note that this function leaks the various device name allocations on | |
169 | * failure. The caller takes care of them. | |
170 | */ | |
a67d7c5f DC |
171 | STATIC int |
172 | xfs_parseargs( | |
173 | struct xfs_mount *mp, | |
288699fe | 174 | char *options) |
a67d7c5f | 175 | { |
9d565ffa | 176 | struct super_block *sb = mp->m_super; |
a17164e5 | 177 | char *this_char, *value; |
9d565ffa CH |
178 | int dsunit = 0; |
179 | int dswidth = 0; | |
180 | int iosize = 0; | |
a5687787 | 181 | __uint8_t iosizelog = 0; |
9d565ffa | 182 | |
4f10700a DC |
183 | /* |
184 | * set up the mount name first so all the errors will refer to the | |
185 | * correct device. | |
186 | */ | |
187 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
188 | if (!mp->m_fsname) | |
2451337d | 189 | return -ENOMEM; |
4f10700a DC |
190 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; |
191 | ||
9d565ffa CH |
192 | /* |
193 | * Copy binary VFS mount flags we are interested in. | |
194 | */ | |
195 | if (sb->s_flags & MS_RDONLY) | |
196 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
197 | if (sb->s_flags & MS_DIRSYNC) | |
198 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
199 | if (sb->s_flags & MS_SYNCHRONOUS) | |
200 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
201 | ||
202 | /* | |
203 | * Set some default flags that could be cleared by the mount option | |
204 | * parsing. | |
205 | */ | |
206 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
207 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
a67d7c5f | 208 | |
9d565ffa CH |
209 | /* |
210 | * These can be overridden by the mount option parsing. | |
211 | */ | |
212 | mp->m_logbufs = -1; | |
213 | mp->m_logbsize = -1; | |
a67d7c5f DC |
214 | |
215 | if (!options) | |
216 | goto done; | |
217 | ||
a67d7c5f DC |
218 | while ((this_char = strsep(&options, ",")) != NULL) { |
219 | if (!*this_char) | |
220 | continue; | |
221 | if ((value = strchr(this_char, '=')) != NULL) | |
222 | *value++ = 0; | |
223 | ||
224 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
225 | if (!value || !*value) { | |
4f10700a | 226 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 227 | this_char); |
2451337d | 228 | return -EINVAL; |
a67d7c5f | 229 | } |
a17164e5 | 230 | if (kstrtoint(value, 10, &mp->m_logbufs)) |
2451337d | 231 | return -EINVAL; |
a67d7c5f DC |
232 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
233 | if (!value || !*value) { | |
4f10700a | 234 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 235 | this_char); |
2451337d | 236 | return -EINVAL; |
a67d7c5f | 237 | } |
a17164e5 | 238 | if (suffix_kstrtoint(value, 10, &mp->m_logbsize)) |
2451337d | 239 | return -EINVAL; |
a67d7c5f DC |
240 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
241 | if (!value || !*value) { | |
4f10700a | 242 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 243 | this_char); |
2451337d | 244 | return -EINVAL; |
a67d7c5f | 245 | } |
9d565ffa CH |
246 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
247 | if (!mp->m_logname) | |
2451337d | 248 | return -ENOMEM; |
a67d7c5f | 249 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 250 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe | 251 | this_char); |
2451337d | 252 | return -EINVAL; |
a67d7c5f DC |
253 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
254 | if (!value || !*value) { | |
4f10700a | 255 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 256 | this_char); |
2451337d | 257 | return -EINVAL; |
a67d7c5f | 258 | } |
9d565ffa CH |
259 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
260 | if (!mp->m_rtname) | |
2451337d | 261 | return -ENOMEM; |
a67d7c5f DC |
262 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
263 | if (!value || !*value) { | |
4f10700a | 264 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 265 | this_char); |
2451337d | 266 | return -EINVAL; |
a67d7c5f | 267 | } |
a17164e5 | 268 | if (kstrtoint(value, 10, &iosize)) |
2451337d | 269 | return -EINVAL; |
1ec7944b | 270 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
271 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
272 | if (!value || !*value) { | |
4f10700a | 273 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 274 | this_char); |
2451337d | 275 | return -EINVAL; |
a67d7c5f | 276 | } |
a17164e5 | 277 | if (suffix_kstrtoint(value, 10, &iosize)) |
2451337d | 278 | return -EINVAL; |
9d565ffa | 279 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
280 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
281 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
282 | mp->m_flags |= XFS_MOUNT_GRPID; | |
283 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
284 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
285 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
286 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 287 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 288 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 289 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 290 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 291 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 292 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 293 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
294 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
295 | if (!value || !*value) { | |
4f10700a | 296 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 297 | this_char); |
2451337d | 298 | return -EINVAL; |
a67d7c5f | 299 | } |
a17164e5 | 300 | if (kstrtoint(value, 10, &dsunit)) |
2451337d | 301 | return -EINVAL; |
a67d7c5f DC |
302 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { |
303 | if (!value || !*value) { | |
4f10700a | 304 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 305 | this_char); |
2451337d | 306 | return -EINVAL; |
a67d7c5f | 307 | } |
a17164e5 | 308 | if (kstrtoint(value, 10, &dswidth)) |
2451337d | 309 | return -EINVAL; |
08bf5404 CM |
310 | } else if (!strcmp(this_char, MNTOPT_32BITINODE)) { |
311 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 312 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
9d565ffa | 313 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 314 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { |
9d565ffa | 315 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 316 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 317 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 318 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 319 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 320 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 321 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 322 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 323 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 324 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 325 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 326 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 327 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 328 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 329 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 330 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
331 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
332 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 333 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 334 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 335 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
4177af3a CS |
336 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
337 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
338 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
a67d7c5f DC |
339 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
340 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
341 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
342 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
343 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
344 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
345 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
346 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
347 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
348 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
349 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa | 350 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
83e782e1 | 351 | XFS_PQUOTA_ENFD); |
a67d7c5f | 352 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa | 353 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
83e782e1 | 354 | mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
a67d7c5f DC |
355 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
356 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa | 357 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
83e782e1 | 358 | XFS_GQUOTA_ENFD); |
a67d7c5f | 359 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa | 360 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
83e782e1 | 361 | mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
e84661aa CH |
362 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
363 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
364 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
365 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 366 | } else { |
4f10700a | 367 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
2451337d | 368 | return -EINVAL; |
a67d7c5f DC |
369 | } |
370 | } | |
371 | ||
9d565ffa CH |
372 | /* |
373 | * no recovery flag requires a read-only mount | |
374 | */ | |
375 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
376 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 377 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
2451337d | 378 | return -EINVAL; |
a67d7c5f DC |
379 | } |
380 | ||
9d565ffa | 381 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
382 | xfs_warn(mp, |
383 | "sunit and swidth options incompatible with the noalign option"); | |
2451337d | 384 | return -EINVAL; |
a67d7c5f DC |
385 | } |
386 | ||
7d095257 CH |
387 | #ifndef CONFIG_XFS_QUOTA |
388 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 389 | xfs_warn(mp, "quota support not available in this kernel."); |
2451337d | 390 | return -EINVAL; |
7d095257 CH |
391 | } |
392 | #endif | |
393 | ||
a67d7c5f | 394 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 395 | xfs_warn(mp, "sunit and swidth must be specified together"); |
2451337d | 396 | return -EINVAL; |
a67d7c5f DC |
397 | } |
398 | ||
399 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
400 | xfs_warn(mp, |
401 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f | 402 | dswidth, dsunit); |
2451337d | 403 | return -EINVAL; |
a67d7c5f DC |
404 | } |
405 | ||
9d565ffa | 406 | done: |
39a45d84 | 407 | if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) { |
9d565ffa CH |
408 | /* |
409 | * At this point the superblock has not been read | |
410 | * in, therefore we do not know the block size. | |
411 | * Before the mount call ends we will convert | |
412 | * these to FSBs. | |
413 | */ | |
39a45d84 JL |
414 | mp->m_dalign = dsunit; |
415 | mp->m_swidth = dswidth; | |
9d565ffa CH |
416 | } |
417 | ||
418 | if (mp->m_logbufs != -1 && | |
419 | mp->m_logbufs != 0 && | |
420 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
421 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 422 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa | 423 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
2451337d | 424 | return -EINVAL; |
9d565ffa CH |
425 | } |
426 | if (mp->m_logbsize != -1 && | |
427 | mp->m_logbsize != 0 && | |
428 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
429 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
430 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
431 | xfs_warn(mp, |
432 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa | 433 | mp->m_logbsize); |
2451337d | 434 | return -EINVAL; |
9d565ffa CH |
435 | } |
436 | ||
9d565ffa CH |
437 | if (iosizelog) { |
438 | if (iosizelog > XFS_MAX_IO_LOG || | |
439 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 440 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
441 | iosizelog, XFS_MIN_IO_LOG, |
442 | XFS_MAX_IO_LOG); | |
2451337d | 443 | return -EINVAL; |
9d565ffa CH |
444 | } |
445 | ||
446 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
447 | mp->m_readio_log = iosizelog; | |
448 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
449 | } |
450 | ||
a67d7c5f DC |
451 | return 0; |
452 | } | |
453 | ||
454 | struct proc_xfs_info { | |
455 | int flag; | |
456 | char *str; | |
457 | }; | |
458 | ||
459 | STATIC int | |
460 | xfs_showargs( | |
461 | struct xfs_mount *mp, | |
462 | struct seq_file *m) | |
463 | { | |
464 | static struct proc_xfs_info xfs_info_set[] = { | |
465 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 466 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 467 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
468 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
469 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
470 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
471 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
472 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
473 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 474 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 475 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
08bf5404 | 476 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE }, |
a67d7c5f DC |
477 | { 0, NULL } |
478 | }; | |
479 | static struct proc_xfs_info xfs_info_unset[] = { | |
480 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
481 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
482 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
483 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
484 | { 0, NULL } | |
485 | }; | |
486 | struct proc_xfs_info *xfs_infop; | |
487 | ||
488 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
489 | if (mp->m_flags & xfs_infop->flag) | |
490 | seq_puts(m, xfs_infop->str); | |
491 | } | |
492 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
493 | if (!(mp->m_flags & xfs_infop->flag)) | |
494 | seq_puts(m, xfs_infop->str); | |
495 | } | |
496 | ||
497 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
498 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
499 | (int)(1 << mp->m_writeio_log) >> 10); | |
500 | ||
501 | if (mp->m_logbufs > 0) | |
502 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
503 | if (mp->m_logbsize > 0) | |
504 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
505 | ||
506 | if (mp->m_logname) | |
507 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
508 | if (mp->m_rtname) | |
509 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
510 | ||
511 | if (mp->m_dalign > 0) | |
512 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
513 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
514 | if (mp->m_swidth > 0) | |
515 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
516 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
517 | ||
518 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
519 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
520 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
521 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
522 | ||
988abe40 | 523 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
83e782e1 | 524 | if (mp->m_qflags & XFS_PQUOTA_ENFD) |
988abe40 AE |
525 | seq_puts(m, "," MNTOPT_PRJQUOTA); |
526 | else | |
527 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
d892d586 CS |
528 | } |
529 | if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
83e782e1 | 530 | if (mp->m_qflags & XFS_GQUOTA_ENFD) |
988abe40 AE |
531 | seq_puts(m, "," MNTOPT_GRPQUOTA); |
532 | else | |
533 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
534 | } | |
a67d7c5f DC |
535 | |
536 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
537 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
538 | ||
539 | return 0; | |
540 | } | |
1da177e4 LT |
541 | __uint64_t |
542 | xfs_max_file_offset( | |
543 | unsigned int blockshift) | |
544 | { | |
545 | unsigned int pagefactor = 1; | |
546 | unsigned int bitshift = BITS_PER_LONG - 1; | |
547 | ||
548 | /* Figure out maximum filesize, on Linux this can depend on | |
549 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 550 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
551 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
552 | * So, for page sized blocks (4K on 32 bit platforms), | |
553 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
554 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
555 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
556 | * Note1: get_block_t takes a long (implicit cast from above) | |
557 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
558 | * can optionally convert the [unsigned] long from above into | |
559 | * an [unsigned] long long. | |
560 | */ | |
561 | ||
562 | #if BITS_PER_LONG == 32 | |
90c699a9 | 563 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
564 | ASSERT(sizeof(sector_t) == 8); |
565 | pagefactor = PAGE_CACHE_SIZE; | |
566 | bitshift = BITS_PER_LONG; | |
567 | # else | |
568 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
569 | # endif | |
570 | #endif | |
571 | ||
572 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
573 | } | |
574 | ||
9de67c3b ES |
575 | /* |
576 | * xfs_set_inode32() and xfs_set_inode64() are passed an agcount | |
577 | * because in the growfs case, mp->m_sb.sb_agcount is not updated | |
578 | * yet to the potentially higher ag count. | |
579 | */ | |
2d2194f6 | 580 | xfs_agnumber_t |
9de67c3b | 581 | xfs_set_inode32(struct xfs_mount *mp, xfs_agnumber_t agcount) |
2d2194f6 CM |
582 | { |
583 | xfs_agnumber_t index = 0; | |
4056c1d0 | 584 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
585 | xfs_sb_t *sbp = &mp->m_sb; |
586 | xfs_agnumber_t max_metadata; | |
54aa61f8 ES |
587 | xfs_agino_t agino; |
588 | xfs_ino_t ino; | |
2d2194f6 CM |
589 | xfs_perag_t *pag; |
590 | ||
591 | /* Calculate how much should be reserved for inodes to meet | |
592 | * the max inode percentage. | |
593 | */ | |
594 | if (mp->m_maxicount) { | |
595 | __uint64_t icount; | |
596 | ||
597 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
598 | do_div(icount, 100); | |
599 | icount += sbp->sb_agblocks - 1; | |
600 | do_div(icount, sbp->sb_agblocks); | |
601 | max_metadata = icount; | |
602 | } else { | |
9de67c3b | 603 | max_metadata = agcount; |
2d2194f6 CM |
604 | } |
605 | ||
54aa61f8 ES |
606 | agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0); |
607 | ||
9de67c3b | 608 | for (index = 0; index < agcount; index++) { |
2d2194f6 | 609 | ino = XFS_AGINO_TO_INO(mp, index, agino); |
4056c1d0 | 610 | |
2d2194f6 | 611 | if (ino > XFS_MAXINUMBER_32) { |
4056c1d0 CM |
612 | pag = xfs_perag_get(mp, index); |
613 | pag->pagi_inodeok = 0; | |
614 | pag->pagf_metadata = 0; | |
615 | xfs_perag_put(pag); | |
616 | continue; | |
2d2194f6 CM |
617 | } |
618 | ||
619 | pag = xfs_perag_get(mp, index); | |
620 | pag->pagi_inodeok = 1; | |
4056c1d0 | 621 | maxagi++; |
2d2194f6 CM |
622 | if (index < max_metadata) |
623 | pag->pagf_metadata = 1; | |
624 | xfs_perag_put(pag); | |
625 | } | |
4056c1d0 CM |
626 | mp->m_flags |= (XFS_MOUNT_32BITINODES | |
627 | XFS_MOUNT_SMALL_INUMS); | |
628 | ||
629 | return maxagi; | |
2d2194f6 CM |
630 | } |
631 | ||
632 | xfs_agnumber_t | |
9de67c3b | 633 | xfs_set_inode64(struct xfs_mount *mp, xfs_agnumber_t agcount) |
2d2194f6 CM |
634 | { |
635 | xfs_agnumber_t index = 0; | |
636 | ||
9de67c3b | 637 | for (index = 0; index < agcount; index++) { |
2d2194f6 CM |
638 | struct xfs_perag *pag; |
639 | ||
640 | pag = xfs_perag_get(mp, index); | |
641 | pag->pagi_inodeok = 1; | |
642 | pag->pagf_metadata = 0; | |
643 | xfs_perag_put(pag); | |
644 | } | |
645 | ||
646 | /* There is no need for lock protection on m_flags, | |
647 | * the rw_semaphore of the VFS superblock is locked | |
648 | * during mount/umount/remount operations, so this is | |
649 | * enough to avoid concurency on the m_flags field | |
650 | */ | |
651 | mp->m_flags &= ~(XFS_MOUNT_32BITINODES | | |
652 | XFS_MOUNT_SMALL_INUMS); | |
653 | return index; | |
654 | } | |
655 | ||
3180e66d | 656 | STATIC int |
1da177e4 LT |
657 | xfs_blkdev_get( |
658 | xfs_mount_t *mp, | |
659 | const char *name, | |
660 | struct block_device **bdevp) | |
661 | { | |
662 | int error = 0; | |
663 | ||
d4d77629 TH |
664 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
665 | mp); | |
1da177e4 LT |
666 | if (IS_ERR(*bdevp)) { |
667 | error = PTR_ERR(*bdevp); | |
77af574e | 668 | xfs_warn(mp, "Invalid device [%s], error=%d", name, error); |
1da177e4 LT |
669 | } |
670 | ||
2451337d | 671 | return error; |
1da177e4 LT |
672 | } |
673 | ||
3180e66d | 674 | STATIC void |
1da177e4 LT |
675 | xfs_blkdev_put( |
676 | struct block_device *bdev) | |
677 | { | |
678 | if (bdev) | |
e525fd89 | 679 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
680 | } |
681 | ||
f538d4da CH |
682 | void |
683 | xfs_blkdev_issue_flush( | |
684 | xfs_buftarg_t *buftarg) | |
685 | { | |
7582df51 | 686 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 687 | } |
1da177e4 | 688 | |
19f354d4 CH |
689 | STATIC void |
690 | xfs_close_devices( | |
691 | struct xfs_mount *mp) | |
692 | { | |
693 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 694 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 695 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 696 | xfs_blkdev_put(logdev); |
19f354d4 CH |
697 | } |
698 | if (mp->m_rtdev_targp) { | |
c032bfcf | 699 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 700 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 701 | xfs_blkdev_put(rtdev); |
19f354d4 | 702 | } |
b7963133 | 703 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
704 | } |
705 | ||
706 | /* | |
707 | * The file system configurations are: | |
708 | * (1) device (partition) with data and internal log | |
709 | * (2) logical volume with data and log subvolumes. | |
710 | * (3) logical volume with data, log, and realtime subvolumes. | |
711 | * | |
712 | * We only have to handle opening the log and realtime volumes here if | |
713 | * they are present. The data subvolume has already been opened by | |
714 | * get_sb_bdev() and is stored in sb->s_bdev. | |
715 | */ | |
716 | STATIC int | |
717 | xfs_open_devices( | |
9d565ffa | 718 | struct xfs_mount *mp) |
19f354d4 CH |
719 | { |
720 | struct block_device *ddev = mp->m_super->s_bdev; | |
721 | struct block_device *logdev = NULL, *rtdev = NULL; | |
722 | int error; | |
723 | ||
724 | /* | |
725 | * Open real time and log devices - order is important. | |
726 | */ | |
9d565ffa CH |
727 | if (mp->m_logname) { |
728 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
729 | if (error) |
730 | goto out; | |
731 | } | |
732 | ||
9d565ffa CH |
733 | if (mp->m_rtname) { |
734 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
735 | if (error) |
736 | goto out_close_logdev; | |
737 | ||
738 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
739 | xfs_warn(mp, |
740 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
2451337d | 741 | error = -EINVAL; |
19f354d4 CH |
742 | goto out_close_rtdev; |
743 | } | |
744 | } | |
745 | ||
746 | /* | |
747 | * Setup xfs_mount buffer target pointers | |
748 | */ | |
2451337d | 749 | error = -ENOMEM; |
34dcefd7 | 750 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev); |
19f354d4 CH |
751 | if (!mp->m_ddev_targp) |
752 | goto out_close_rtdev; | |
753 | ||
754 | if (rtdev) { | |
34dcefd7 | 755 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev); |
19f354d4 CH |
756 | if (!mp->m_rtdev_targp) |
757 | goto out_free_ddev_targ; | |
758 | } | |
759 | ||
760 | if (logdev && logdev != ddev) { | |
34dcefd7 | 761 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev); |
19f354d4 CH |
762 | if (!mp->m_logdev_targp) |
763 | goto out_free_rtdev_targ; | |
764 | } else { | |
765 | mp->m_logdev_targp = mp->m_ddev_targp; | |
766 | } | |
767 | ||
768 | return 0; | |
769 | ||
770 | out_free_rtdev_targ: | |
771 | if (mp->m_rtdev_targp) | |
b7963133 | 772 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 773 | out_free_ddev_targ: |
b7963133 | 774 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 | 775 | out_close_rtdev: |
d2a5e3c6 | 776 | xfs_blkdev_put(rtdev); |
19f354d4 CH |
777 | out_close_logdev: |
778 | if (logdev && logdev != ddev) | |
779 | xfs_blkdev_put(logdev); | |
780 | out: | |
781 | return error; | |
782 | } | |
783 | ||
e34b562c CH |
784 | /* |
785 | * Setup xfs_mount buffer target pointers based on superblock | |
786 | */ | |
787 | STATIC int | |
788 | xfs_setup_devices( | |
789 | struct xfs_mount *mp) | |
790 | { | |
791 | int error; | |
19f354d4 | 792 | |
a96c4151 | 793 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize); |
e34b562c CH |
794 | if (error) |
795 | return error; | |
796 | ||
797 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
798 | unsigned int log_sector_size = BBSIZE; | |
799 | ||
800 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
801 | log_sector_size = mp->m_sb.sb_logsectsize; | |
802 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
e34b562c CH |
803 | log_sector_size); |
804 | if (error) | |
805 | return error; | |
806 | } | |
807 | if (mp->m_rtdev_targp) { | |
808 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
e34b562c CH |
809 | mp->m_sb.sb_sectsize); |
810 | if (error) | |
811 | return error; | |
812 | } | |
813 | ||
814 | return 0; | |
815 | } | |
19f354d4 | 816 | |
aa6bf01d CH |
817 | STATIC int |
818 | xfs_init_mount_workqueues( | |
819 | struct xfs_mount *mp) | |
820 | { | |
78c931b8 | 821 | mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s", |
b29c70f5 | 822 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 1, mp->m_fsname); |
78c931b8 BF |
823 | if (!mp->m_buf_workqueue) |
824 | goto out; | |
825 | ||
aa6bf01d | 826 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", |
8018ec08 | 827 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d | 828 | if (!mp->m_data_workqueue) |
78c931b8 | 829 | goto out_destroy_buf; |
aa6bf01d CH |
830 | |
831 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", | |
8018ec08 | 832 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d CH |
833 | if (!mp->m_unwritten_workqueue) |
834 | goto out_destroy_data_iodone_queue; | |
835 | ||
4c2d542f | 836 | mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
8018ec08 | 837 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
4c2d542f DC |
838 | if (!mp->m_cil_workqueue) |
839 | goto out_destroy_unwritten; | |
5889608d DC |
840 | |
841 | mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", | |
8018ec08 | 842 | WQ_FREEZABLE, 0, mp->m_fsname); |
5889608d DC |
843 | if (!mp->m_reclaim_workqueue) |
844 | goto out_destroy_cil; | |
845 | ||
846 | mp->m_log_workqueue = alloc_workqueue("xfs-log/%s", | |
b29c70f5 | 847 | WQ_FREEZABLE|WQ_HIGHPRI, 0, mp->m_fsname); |
5889608d DC |
848 | if (!mp->m_log_workqueue) |
849 | goto out_destroy_reclaim; | |
850 | ||
579b62fa | 851 | mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s", |
8018ec08 | 852 | WQ_FREEZABLE, 0, mp->m_fsname); |
579b62fa BF |
853 | if (!mp->m_eofblocks_workqueue) |
854 | goto out_destroy_log; | |
855 | ||
aa6bf01d CH |
856 | return 0; |
857 | ||
579b62fa BF |
858 | out_destroy_log: |
859 | destroy_workqueue(mp->m_log_workqueue); | |
5889608d DC |
860 | out_destroy_reclaim: |
861 | destroy_workqueue(mp->m_reclaim_workqueue); | |
862 | out_destroy_cil: | |
863 | destroy_workqueue(mp->m_cil_workqueue); | |
4c2d542f DC |
864 | out_destroy_unwritten: |
865 | destroy_workqueue(mp->m_unwritten_workqueue); | |
aa6bf01d CH |
866 | out_destroy_data_iodone_queue: |
867 | destroy_workqueue(mp->m_data_workqueue); | |
78c931b8 BF |
868 | out_destroy_buf: |
869 | destroy_workqueue(mp->m_buf_workqueue); | |
aa6bf01d CH |
870 | out: |
871 | return -ENOMEM; | |
872 | } | |
873 | ||
874 | STATIC void | |
875 | xfs_destroy_mount_workqueues( | |
876 | struct xfs_mount *mp) | |
877 | { | |
579b62fa | 878 | destroy_workqueue(mp->m_eofblocks_workqueue); |
5889608d DC |
879 | destroy_workqueue(mp->m_log_workqueue); |
880 | destroy_workqueue(mp->m_reclaim_workqueue); | |
4c2d542f | 881 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d CH |
882 | destroy_workqueue(mp->m_data_workqueue); |
883 | destroy_workqueue(mp->m_unwritten_workqueue); | |
78c931b8 | 884 | destroy_workqueue(mp->m_buf_workqueue); |
aa6bf01d CH |
885 | } |
886 | ||
9aa05000 DC |
887 | /* |
888 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
889 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
890 | * for IO to complete so that we effectively throttle multiple callers to the | |
891 | * rate at which IO is completing. | |
892 | */ | |
893 | void | |
894 | xfs_flush_inodes( | |
895 | struct xfs_mount *mp) | |
896 | { | |
897 | struct super_block *sb = mp->m_super; | |
898 | ||
899 | if (down_read_trylock(&sb->s_umount)) { | |
0dc83bd3 | 900 | sync_inodes_sb(sb); |
9aa05000 DC |
901 | up_read(&sb->s_umount); |
902 | } | |
903 | } | |
904 | ||
bf904248 | 905 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 906 | STATIC struct inode * |
a50cd269 | 907 | xfs_fs_alloc_inode( |
1da177e4 LT |
908 | struct super_block *sb) |
909 | { | |
bf904248 | 910 | BUG(); |
493dca61 | 911 | return NULL; |
1da177e4 LT |
912 | } |
913 | ||
bf904248 | 914 | /* |
99fa8cb3 DC |
915 | * Now that the generic code is guaranteed not to be accessing |
916 | * the linux inode, we can reclaim the inode. | |
bf904248 | 917 | */ |
1da177e4 | 918 | STATIC void |
a50cd269 | 919 | xfs_fs_destroy_inode( |
848ce8f7 | 920 | struct inode *inode) |
1da177e4 | 921 | { |
848ce8f7 CH |
922 | struct xfs_inode *ip = XFS_I(inode); |
923 | ||
cca28fb8 | 924 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
925 | |
926 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 | 927 | |
848ce8f7 CH |
928 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
929 | ||
930 | /* | |
931 | * We should never get here with one of the reclaim flags already set. | |
932 | */ | |
933 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
934 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
935 | ||
936 | /* | |
57817c68 DC |
937 | * We always use background reclaim here because even if the |
938 | * inode is clean, it still may be under IO and hence we have | |
939 | * to take the flush lock. The background reclaim path handles | |
940 | * this more efficiently than we can here, so simply let background | |
941 | * reclaim tear down all inodes. | |
848ce8f7 | 942 | */ |
57817c68 | 943 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
944 | } |
945 | ||
07c8f675 DC |
946 | /* |
947 | * Slab object creation initialisation for the XFS inode. | |
948 | * This covers only the idempotent fields in the XFS inode; | |
949 | * all other fields need to be initialised on allocation | |
b595076a | 950 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
951 | * fields in the xfs inode that left in the initialise state |
952 | * when freeing the inode. | |
953 | */ | |
bf904248 DC |
954 | STATIC void |
955 | xfs_fs_inode_init_once( | |
07c8f675 DC |
956 | void *inode) |
957 | { | |
958 | struct xfs_inode *ip = inode; | |
959 | ||
960 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
961 | |
962 | /* vfs inode */ | |
963 | inode_init_once(VFS_I(ip)); | |
964 | ||
965 | /* xfs inode */ | |
07c8f675 DC |
966 | atomic_set(&ip->i_pincount, 0); |
967 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 | 968 | |
653c60b6 DC |
969 | mrlock_init(&ip->i_mmaplock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
970 | "xfsino", ip->i_ino); | |
07c8f675 DC |
971 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
972 | "xfsino", ip->i_ino); | |
07c8f675 DC |
973 | } |
974 | ||
1da177e4 | 975 | STATIC void |
b57922d9 | 976 | xfs_fs_evict_inode( |
1da177e4 LT |
977 | struct inode *inode) |
978 | { | |
1543d79c | 979 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 980 | |
4f59af75 CH |
981 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
982 | ||
b57922d9 | 983 | trace_xfs_evict_inode(ip); |
cca28fb8 | 984 | |
91b0abe3 | 985 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 986 | clear_inode(inode); |
99fa8cb3 DC |
987 | XFS_STATS_INC(vn_rele); |
988 | XFS_STATS_INC(vn_remove); | |
99fa8cb3 DC |
989 | |
990 | xfs_inactive(ip); | |
56d433e4 | 991 | } |
1da177e4 | 992 | |
5132ba8f DC |
993 | /* |
994 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
995 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
996 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
997 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
998 | * we drop the final reference on. | |
999 | */ | |
1000 | STATIC int | |
1001 | xfs_fs_drop_inode( | |
1002 | struct inode *inode) | |
1003 | { | |
1004 | struct xfs_inode *ip = XFS_I(inode); | |
1005 | ||
1006 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
1007 | } | |
1008 | ||
a738159d CH |
1009 | STATIC void |
1010 | xfs_free_fsname( | |
1011 | struct xfs_mount *mp) | |
1012 | { | |
1013 | kfree(mp->m_fsname); | |
1014 | kfree(mp->m_rtname); | |
1015 | kfree(mp->m_logname); | |
1016 | } | |
1017 | ||
1da177e4 | 1018 | STATIC int |
69961a26 | 1019 | xfs_fs_sync_fs( |
1da177e4 LT |
1020 | struct super_block *sb, |
1021 | int wait) | |
1022 | { | |
745f6919 | 1023 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1024 | |
e893bffd | 1025 | /* |
34625c66 | 1026 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1027 | */ |
34625c66 | 1028 | if (!wait) |
69961a26 | 1029 | return 0; |
69961a26 | 1030 | |
34061f5c | 1031 | xfs_log_force(mp, XFS_LOG_SYNC); |
69961a26 | 1032 | if (laptop_mode) { |
1da177e4 LT |
1033 | /* |
1034 | * The disk must be active because we're syncing. | |
f661f1e0 | 1035 | * We schedule log work now (now that the disk is |
1da177e4 LT |
1036 | * active) instead of later (when it might not be). |
1037 | */ | |
f661f1e0 | 1038 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
1039 | } |
1040 | ||
69961a26 | 1041 | return 0; |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | STATIC int | |
a50cd269 | 1045 | xfs_fs_statfs( |
726c3342 | 1046 | struct dentry *dentry, |
1da177e4 LT |
1047 | struct kstatfs *statp) |
1048 | { | |
4ca488eb CH |
1049 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1050 | xfs_sb_t *sbp = &mp->m_sb; | |
2b0143b5 | 1051 | struct xfs_inode *ip = XFS_I(d_inode(dentry)); |
4ca488eb | 1052 | __uint64_t fakeinos, id; |
501ab323 | 1053 | __uint64_t icount; |
e88b64ea | 1054 | __uint64_t ifree; |
0d485ada | 1055 | __uint64_t fdblocks; |
4ca488eb | 1056 | xfs_extlen_t lsize; |
2fe33661 | 1057 | __int64_t ffree; |
4ca488eb CH |
1058 | |
1059 | statp->f_type = XFS_SB_MAGIC; | |
1060 | statp->f_namelen = MAXNAMELEN - 1; | |
1061 | ||
1062 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1063 | statp->f_fsid.val[0] = (u32)id; | |
1064 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1065 | ||
501ab323 | 1066 | icount = percpu_counter_sum(&mp->m_icount); |
e88b64ea | 1067 | ifree = percpu_counter_sum(&mp->m_ifree); |
0d485ada | 1068 | fdblocks = percpu_counter_sum(&mp->m_fdblocks); |
4ca488eb CH |
1069 | |
1070 | spin_lock(&mp->m_sb_lock); | |
1071 | statp->f_bsize = sbp->sb_blocksize; | |
1072 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1073 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
0d485ada DC |
1074 | spin_unlock(&mp->m_sb_lock); |
1075 | ||
1076 | statp->f_bfree = fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1077 | statp->f_bavail = statp->f_bfree; | |
1078 | ||
4ca488eb | 1079 | fakeinos = statp->f_bfree << sbp->sb_inopblog; |
501ab323 | 1080 | statp->f_files = MIN(icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); |
4ca488eb | 1081 | if (mp->m_maxicount) |
a19d9f88 CH |
1082 | statp->f_files = min_t(typeof(statp->f_files), |
1083 | statp->f_files, | |
1084 | mp->m_maxicount); | |
2fe33661 | 1085 | |
01f9882e ES |
1086 | /* If sb_icount overshot maxicount, report actual allocation */ |
1087 | statp->f_files = max_t(typeof(statp->f_files), | |
1088 | statp->f_files, | |
1089 | sbp->sb_icount); | |
1090 | ||
2fe33661 | 1091 | /* make sure statp->f_ffree does not underflow */ |
e88b64ea | 1092 | ffree = statp->f_files - (icount - ifree); |
2fe33661 SB |
1093 | statp->f_ffree = max_t(__int64_t, ffree, 0); |
1094 | ||
4ca488eb | 1095 | |
da5bf95e | 1096 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
83e782e1 CS |
1097 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
1098 | (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) | |
7d095257 | 1099 | xfs_qm_statvfs(ip, statp); |
4ca488eb | 1100 | return 0; |
1da177e4 LT |
1101 | } |
1102 | ||
d5db0f97 ES |
1103 | STATIC void |
1104 | xfs_save_resvblks(struct xfs_mount *mp) | |
1105 | { | |
1106 | __uint64_t resblks = 0; | |
1107 | ||
1108 | mp->m_resblks_save = mp->m_resblks; | |
1109 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1110 | } | |
1111 | ||
1112 | STATIC void | |
1113 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1114 | { | |
1115 | __uint64_t resblks; | |
1116 | ||
1117 | if (mp->m_resblks_save) { | |
1118 | resblks = mp->m_resblks_save; | |
1119 | mp->m_resblks_save = 0; | |
1120 | } else | |
1121 | resblks = xfs_default_resblks(mp); | |
1122 | ||
1123 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1124 | } | |
1125 | ||
c7eea6f7 DC |
1126 | /* |
1127 | * Trigger writeback of all the dirty metadata in the file system. | |
1128 | * | |
1129 | * This ensures that the metadata is written to their location on disk rather | |
1130 | * than just existing in transactions in the log. This means after a quiesce | |
c75921a7 DC |
1131 | * there is no log replay required to write the inodes to disk - this is the |
1132 | * primary difference between a sync and a quiesce. | |
c7eea6f7 | 1133 | * |
c75921a7 DC |
1134 | * Note: xfs_log_quiesce() stops background log work - the callers must ensure |
1135 | * it is started again when appropriate. | |
c7eea6f7 | 1136 | */ |
632b89e8 | 1137 | static void |
c7eea6f7 DC |
1138 | xfs_quiesce_attr( |
1139 | struct xfs_mount *mp) | |
1140 | { | |
1141 | int error = 0; | |
1142 | ||
1143 | /* wait for all modifications to complete */ | |
1144 | while (atomic_read(&mp->m_active_trans) > 0) | |
1145 | delay(100); | |
1146 | ||
1147 | /* force the log to unpin objects from the now complete transactions */ | |
1148 | xfs_log_force(mp, XFS_LOG_SYNC); | |
1149 | ||
1150 | /* reclaim inodes to do any IO before the freeze completes */ | |
1151 | xfs_reclaim_inodes(mp, 0); | |
1152 | xfs_reclaim_inodes(mp, SYNC_WAIT); | |
1153 | ||
c7eea6f7 DC |
1154 | /* Push the superblock and write an unmount record */ |
1155 | error = xfs_log_sbcount(mp); | |
1156 | if (error) | |
1157 | xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " | |
1158 | "Frozen image may not be consistent."); | |
c7eea6f7 | 1159 | /* |
c75921a7 DC |
1160 | * Just warn here till VFS can correctly support |
1161 | * read-only remount without racing. | |
c7eea6f7 | 1162 | */ |
c75921a7 | 1163 | WARN_ON(atomic_read(&mp->m_active_trans) != 0); |
c7eea6f7 | 1164 | |
c75921a7 | 1165 | xfs_log_quiesce(mp); |
c7eea6f7 DC |
1166 | } |
1167 | ||
1da177e4 | 1168 | STATIC int |
a50cd269 | 1169 | xfs_fs_remount( |
1da177e4 LT |
1170 | struct super_block *sb, |
1171 | int *flags, | |
1172 | char *options) | |
1173 | { | |
745f6919 | 1174 | struct xfs_mount *mp = XFS_M(sb); |
9de67c3b | 1175 | xfs_sb_t *sbp = &mp->m_sb; |
62a877e3 CH |
1176 | substring_t args[MAX_OPT_ARGS]; |
1177 | char *p; | |
7884bc86 | 1178 | int error; |
1da177e4 | 1179 | |
02b9984d | 1180 | sync_filesystem(sb); |
62a877e3 CH |
1181 | while ((p = strsep(&options, ",")) != NULL) { |
1182 | int token; | |
bdd907ba | 1183 | |
62a877e3 CH |
1184 | if (!*p) |
1185 | continue; | |
48b62a1a | 1186 | |
62a877e3 CH |
1187 | token = match_token(p, tokens, args); |
1188 | switch (token) { | |
1189 | case Opt_barrier: | |
48b62a1a | 1190 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1191 | break; |
1192 | case Opt_nobarrier: | |
48b62a1a | 1193 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 | 1194 | break; |
c3a58fec | 1195 | case Opt_inode64: |
9de67c3b | 1196 | mp->m_maxagi = xfs_set_inode64(mp, sbp->sb_agcount); |
c3a58fec | 1197 | break; |
2ea03929 | 1198 | case Opt_inode32: |
9de67c3b | 1199 | mp->m_maxagi = xfs_set_inode32(mp, sbp->sb_agcount); |
2ea03929 | 1200 | break; |
62a877e3 | 1201 | default: |
6efdf281 CH |
1202 | /* |
1203 | * Logically we would return an error here to prevent | |
1204 | * users from believing they might have changed | |
1205 | * mount options using remount which can't be changed. | |
1206 | * | |
1207 | * But unfortunately mount(8) adds all options from | |
1208 | * mtab and fstab to the mount arguments in some cases | |
1209 | * so we can't blindly reject options, but have to | |
1210 | * check for each specified option if it actually | |
1211 | * differs from the currently set option and only | |
1212 | * reject it if that's the case. | |
1213 | * | |
1214 | * Until that is implemented we return success for | |
1215 | * every remount request, and silently ignore all | |
1216 | * options that we can't actually change. | |
1217 | */ | |
1218 | #if 0 | |
4f10700a | 1219 | xfs_info(mp, |
08e96e1a | 1220 | "mount option \"%s\" not supported for remount", p); |
62a877e3 | 1221 | return -EINVAL; |
6efdf281 | 1222 | #else |
6c5e51da | 1223 | break; |
6efdf281 | 1224 | #endif |
48b62a1a | 1225 | } |
62a877e3 CH |
1226 | } |
1227 | ||
7884bc86 | 1228 | /* ro -> rw */ |
62a877e3 | 1229 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
bbe051c8 ES |
1230 | if (mp->m_flags & XFS_MOUNT_NORECOVERY) { |
1231 | xfs_warn(mp, | |
1232 | "ro->rw transition prohibited on norecovery mount"); | |
1233 | return -EINVAL; | |
1234 | } | |
1235 | ||
62a877e3 | 1236 | mp->m_flags &= ~XFS_MOUNT_RDONLY; |
7884bc86 CH |
1237 | |
1238 | /* | |
1239 | * If this is the first remount to writeable state we | |
1240 | * might have some superblock changes to update. | |
1241 | */ | |
61e63ecb DC |
1242 | if (mp->m_update_sb) { |
1243 | error = xfs_sync_sb(mp, false); | |
7884bc86 | 1244 | if (error) { |
4f10700a | 1245 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1246 | return error; |
1247 | } | |
61e63ecb | 1248 | mp->m_update_sb = false; |
7884bc86 | 1249 | } |
cbe132a8 DC |
1250 | |
1251 | /* | |
1252 | * Fill out the reserve pool if it is empty. Use the stashed | |
1253 | * value if it is non-zero, otherwise go with the default. | |
1254 | */ | |
d5db0f97 | 1255 | xfs_restore_resvblks(mp); |
f661f1e0 | 1256 | xfs_log_work_queue(mp); |
62a877e3 CH |
1257 | } |
1258 | ||
1259 | /* rw -> ro */ | |
1260 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 | 1261 | /* |
34061f5c DC |
1262 | * Before we sync the metadata, we need to free up the reserve |
1263 | * block pool so that the used block count in the superblock on | |
1264 | * disk is correct at the end of the remount. Stash the current | |
1265 | * reserve pool size so that if we get remounted rw, we can | |
1266 | * return it to the same size. | |
cbe132a8 | 1267 | */ |
d5db0f97 | 1268 | xfs_save_resvblks(mp); |
76bf105c | 1269 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1270 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1271 | } | |
1272 | ||
62a877e3 | 1273 | return 0; |
1da177e4 LT |
1274 | } |
1275 | ||
9909c4aa CH |
1276 | /* |
1277 | * Second stage of a freeze. The data is already frozen so we only | |
61e63ecb DC |
1278 | * need to take care of the metadata. Once that's done sync the superblock |
1279 | * to the log to dirty it in case of a crash while frozen. This ensures that we | |
1280 | * will recover the unlinked inode lists on the next mount. | |
9909c4aa | 1281 | */ |
c4be0c1d TS |
1282 | STATIC int |
1283 | xfs_fs_freeze( | |
1da177e4 LT |
1284 | struct super_block *sb) |
1285 | { | |
9909c4aa CH |
1286 | struct xfs_mount *mp = XFS_M(sb); |
1287 | ||
d5db0f97 | 1288 | xfs_save_resvblks(mp); |
76bf105c | 1289 | xfs_quiesce_attr(mp); |
61e63ecb | 1290 | return xfs_sync_sb(mp, true); |
1da177e4 LT |
1291 | } |
1292 | ||
d5db0f97 ES |
1293 | STATIC int |
1294 | xfs_fs_unfreeze( | |
1295 | struct super_block *sb) | |
1296 | { | |
1297 | struct xfs_mount *mp = XFS_M(sb); | |
1298 | ||
1299 | xfs_restore_resvblks(mp); | |
f661f1e0 | 1300 | xfs_log_work_queue(mp); |
d5db0f97 ES |
1301 | return 0; |
1302 | } | |
1303 | ||
1da177e4 | 1304 | STATIC int |
a50cd269 | 1305 | xfs_fs_show_options( |
1da177e4 | 1306 | struct seq_file *m, |
34c80b1d | 1307 | struct dentry *root) |
1da177e4 | 1308 | { |
2451337d | 1309 | return xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1310 | } |
1311 | ||
f8f15e42 CH |
1312 | /* |
1313 | * This function fills in xfs_mount_t fields based on mount args. | |
1314 | * Note: the superblock _has_ now been read in. | |
1315 | */ | |
1316 | STATIC int | |
1317 | xfs_finish_flags( | |
f8f15e42 CH |
1318 | struct xfs_mount *mp) |
1319 | { | |
1320 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1321 | ||
025dfdaf | 1322 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1323 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1324 | if (mp->m_logbsize <= 0 && |
1325 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1326 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1327 | } else if (mp->m_logbsize > 0 && |
1328 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1329 | xfs_warn(mp, |
1330 | "logbuf size must be greater than or equal to log stripe size"); | |
2451337d | 1331 | return -EINVAL; |
f8f15e42 CH |
1332 | } |
1333 | } else { | |
1334 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1335 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1336 | xfs_warn(mp, |
1337 | "logbuf size for version 1 logs must be 16K or 32K"); | |
2451337d | 1338 | return -EINVAL; |
f8f15e42 CH |
1339 | } |
1340 | } | |
1341 | ||
d3eaace8 DC |
1342 | /* |
1343 | * V5 filesystems always use attr2 format for attributes. | |
1344 | */ | |
1345 | if (xfs_sb_version_hascrc(&mp->m_sb) && | |
1346 | (mp->m_flags & XFS_MOUNT_NOATTR2)) { | |
1347 | xfs_warn(mp, | |
1348 | "Cannot mount a V5 filesystem as %s. %s is always enabled for V5 filesystems.", | |
1349 | MNTOPT_NOATTR2, MNTOPT_ATTR2); | |
2451337d | 1350 | return -EINVAL; |
d3eaace8 DC |
1351 | } |
1352 | ||
f8f15e42 CH |
1353 | /* |
1354 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1355 | * told by noattr2 to turn it off | |
1356 | */ | |
1357 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1358 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1359 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1360 | ||
1361 | /* | |
1362 | * prohibit r/w mounts of read-only filesystems | |
1363 | */ | |
1364 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1365 | xfs_warn(mp, |
1366 | "cannot mount a read-only filesystem as read-write"); | |
2451337d | 1367 | return -EROFS; |
f8f15e42 CH |
1368 | } |
1369 | ||
d892d586 CS |
1370 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
1371 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && | |
1372 | !xfs_sb_version_has_pquotino(&mp->m_sb)) { | |
1373 | xfs_warn(mp, | |
1374 | "Super block does not support project and group quota together"); | |
2451337d | 1375 | return -EINVAL; |
d892d586 CS |
1376 | } |
1377 | ||
f8f15e42 CH |
1378 | return 0; |
1379 | } | |
1380 | ||
5681ca40 DC |
1381 | static int |
1382 | xfs_init_percpu_counters( | |
1383 | struct xfs_mount *mp) | |
1384 | { | |
1385 | int error; | |
1386 | ||
1387 | error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL); | |
1388 | if (error) | |
5e9383f9 | 1389 | return -ENOMEM; |
5681ca40 DC |
1390 | |
1391 | error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL); | |
1392 | if (error) | |
1393 | goto free_icount; | |
1394 | ||
1395 | error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL); | |
1396 | if (error) | |
1397 | goto free_ifree; | |
1398 | ||
1399 | return 0; | |
1400 | ||
1401 | free_ifree: | |
1402 | percpu_counter_destroy(&mp->m_ifree); | |
1403 | free_icount: | |
1404 | percpu_counter_destroy(&mp->m_icount); | |
1405 | return -ENOMEM; | |
1406 | } | |
1407 | ||
1408 | void | |
1409 | xfs_reinit_percpu_counters( | |
1410 | struct xfs_mount *mp) | |
1411 | { | |
1412 | percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount); | |
1413 | percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree); | |
1414 | percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks); | |
1415 | } | |
1416 | ||
1417 | static void | |
1418 | xfs_destroy_percpu_counters( | |
1419 | struct xfs_mount *mp) | |
1420 | { | |
1421 | percpu_counter_destroy(&mp->m_icount); | |
1422 | percpu_counter_destroy(&mp->m_ifree); | |
1423 | percpu_counter_destroy(&mp->m_fdblocks); | |
1424 | } | |
1425 | ||
1da177e4 | 1426 | STATIC int |
a50cd269 | 1427 | xfs_fs_fill_super( |
1da177e4 LT |
1428 | struct super_block *sb, |
1429 | void *data, | |
1430 | int silent) | |
1431 | { | |
f3dcc13f | 1432 | struct inode *root; |
745f6919 | 1433 | struct xfs_mount *mp = NULL; |
2451337d | 1434 | int flags = 0, error = -ENOMEM; |
bdd907ba | 1435 | |
c962fb79 CH |
1436 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1437 | if (!mp) | |
9d565ffa | 1438 | goto out; |
1da177e4 | 1439 | |
c962fb79 | 1440 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1441 | mutex_init(&mp->m_growlock); |
1442 | atomic_set(&mp->m_active_trans, 0); | |
7e18530b | 1443 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
579b62fa | 1444 | INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker); |
e3aed1a0 | 1445 | mp->m_kobj.kobject.kset = xfs_kset; |
74394496 | 1446 | |
b267ce99 CH |
1447 | mp->m_super = sb; |
1448 | sb->s_fs_info = mp; | |
1da177e4 | 1449 | |
288699fe | 1450 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1451 | if (error) |
9d565ffa | 1452 | goto out_free_fsname; |
1da177e4 LT |
1453 | |
1454 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1455 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1456 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1457 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1458 | sb->s_qcop = &xfs_quotactl_operations; |
17ef4fdd | 1459 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; |
fcafb71b | 1460 | #endif |
a50cd269 | 1461 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1462 | |
9d565ffa | 1463 | if (silent) |
f8f15e42 CH |
1464 | flags |= XFS_MFSI_QUIET; |
1465 | ||
9d565ffa | 1466 | error = xfs_open_devices(mp); |
19f354d4 | 1467 | if (error) |
288699fe | 1468 | goto out_free_fsname; |
f8f15e42 | 1469 | |
2451337d | 1470 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1471 | if (error) |
1472 | goto out_close_devices; | |
c962fb79 | 1473 | |
5681ca40 | 1474 | error = xfs_init_percpu_counters(mp); |
aa6bf01d CH |
1475 | if (error) |
1476 | goto out_destroy_workqueues; | |
1477 | ||
f8f15e42 CH |
1478 | error = xfs_readsb(mp, flags); |
1479 | if (error) | |
9d565ffa CH |
1480 | goto out_destroy_counters; |
1481 | ||
1482 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1483 | if (error) |
effa2eda | 1484 | goto out_free_sb; |
f8f15e42 | 1485 | |
e34b562c | 1486 | error = xfs_setup_devices(mp); |
19f354d4 | 1487 | if (error) |
effa2eda | 1488 | goto out_free_sb; |
f8f15e42 | 1489 | |
f8f15e42 CH |
1490 | error = xfs_filestream_mount(mp); |
1491 | if (error) | |
effa2eda | 1492 | goto out_free_sb; |
f8f15e42 | 1493 | |
704b2907 DC |
1494 | /* |
1495 | * we must configure the block size in the superblock before we run the | |
1496 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1497 | */ |
4ca488eb CH |
1498 | sb->s_magic = XFS_SB_MAGIC; |
1499 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1500 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1501 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1502 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1503 | sb->s_time_gran = 1; |
1504 | set_posix_acl_flag(sb); | |
1505 | ||
dc037ad7 DC |
1506 | /* version 5 superblocks support inode version counters. */ |
1507 | if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) | |
1508 | sb->s_flags |= MS_I_VERSION; | |
1509 | ||
8a00ebe4 | 1510 | error = xfs_mountfs(mp); |
2bcf6e97 | 1511 | if (error) |
7e18530b | 1512 | goto out_filestream_unmount; |
704b2907 | 1513 | |
01651646 | 1514 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1515 | if (!root) { |
2451337d | 1516 | error = -ENOENT; |
8a00ebe4 | 1517 | goto out_unmount; |
cbc89dcf | 1518 | } |
48fde701 | 1519 | sb->s_root = d_make_root(root); |
f3dcc13f | 1520 | if (!sb->s_root) { |
2451337d | 1521 | error = -ENOMEM; |
8a00ebe4 | 1522 | goto out_unmount; |
1da177e4 | 1523 | } |
74394496 | 1524 | |
1da177e4 | 1525 | return 0; |
33c7a2bc | 1526 | |
7e18530b | 1527 | out_filestream_unmount: |
120226c1 | 1528 | xfs_filestream_unmount(mp); |
effa2eda CH |
1529 | out_free_sb: |
1530 | xfs_freesb(mp); | |
9d565ffa | 1531 | out_destroy_counters: |
5681ca40 | 1532 | xfs_destroy_percpu_counters(mp); |
aa6bf01d CH |
1533 | out_destroy_workqueues: |
1534 | xfs_destroy_mount_workqueues(mp); | |
61ba35de | 1535 | out_close_devices: |
19f354d4 | 1536 | xfs_close_devices(mp); |
9d565ffa CH |
1537 | out_free_fsname: |
1538 | xfs_free_fsname(mp); | |
c962fb79 | 1539 | kfree(mp); |
9d565ffa | 1540 | out: |
2451337d | 1541 | return error; |
f8f15e42 | 1542 | |
2bcf6e97 | 1543 | out_unmount: |
e48ad316 | 1544 | xfs_filestream_unmount(mp); |
19f354d4 | 1545 | xfs_unmountfs(mp); |
6203300e | 1546 | goto out_free_sb; |
1da177e4 LT |
1547 | } |
1548 | ||
5681ca40 DC |
1549 | STATIC void |
1550 | xfs_fs_put_super( | |
1551 | struct super_block *sb) | |
1552 | { | |
1553 | struct xfs_mount *mp = XFS_M(sb); | |
1554 | ||
4225441a | 1555 | xfs_notice(mp, "Unmounting Filesystem"); |
5681ca40 DC |
1556 | xfs_filestream_unmount(mp); |
1557 | xfs_unmountfs(mp); | |
1558 | ||
1559 | xfs_freesb(mp); | |
1560 | xfs_destroy_percpu_counters(mp); | |
1561 | xfs_destroy_mount_workqueues(mp); | |
1562 | xfs_close_devices(mp); | |
1563 | xfs_free_fsname(mp); | |
1564 | kfree(mp); | |
1565 | } | |
1566 | ||
152a0836 AV |
1567 | STATIC struct dentry * |
1568 | xfs_fs_mount( | |
1da177e4 LT |
1569 | struct file_system_type *fs_type, |
1570 | int flags, | |
1571 | const char *dev_name, | |
152a0836 | 1572 | void *data) |
1da177e4 | 1573 | { |
152a0836 | 1574 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1575 | } |
1576 | ||
0a234c6d | 1577 | static long |
8daaa831 | 1578 | xfs_fs_nr_cached_objects( |
9b17c623 | 1579 | struct super_block *sb, |
4101b624 | 1580 | struct shrink_control *sc) |
8daaa831 DC |
1581 | { |
1582 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1583 | } | |
1584 | ||
0a234c6d | 1585 | static long |
8daaa831 DC |
1586 | xfs_fs_free_cached_objects( |
1587 | struct super_block *sb, | |
4101b624 | 1588 | struct shrink_control *sc) |
8daaa831 | 1589 | { |
4101b624 | 1590 | return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan); |
8daaa831 DC |
1591 | } |
1592 | ||
b87221de | 1593 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1594 | .alloc_inode = xfs_fs_alloc_inode, |
1595 | .destroy_inode = xfs_fs_destroy_inode, | |
b57922d9 | 1596 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1597 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1598 | .put_super = xfs_fs_put_super, |
69961a26 | 1599 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1600 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1601 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1602 | .statfs = xfs_fs_statfs, |
1603 | .remount_fs = xfs_fs_remount, | |
1604 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1605 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1606 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1607 | }; |
1608 | ||
5085b607 | 1609 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1610 | .owner = THIS_MODULE, |
1611 | .name = "xfs", | |
152a0836 | 1612 | .mount = xfs_fs_mount, |
1da177e4 LT |
1613 | .kill_sb = kill_block_super, |
1614 | .fs_flags = FS_REQUIRES_DEV, | |
1615 | }; | |
7f78e035 | 1616 | MODULE_ALIAS_FS("xfs"); |
1da177e4 | 1617 | |
9f8868ff CH |
1618 | STATIC int __init |
1619 | xfs_init_zones(void) | |
1620 | { | |
9f8868ff CH |
1621 | |
1622 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1623 | if (!xfs_ioend_zone) | |
bf904248 | 1624 | goto out; |
9f8868ff CH |
1625 | |
1626 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1627 | xfs_ioend_zone); | |
1628 | if (!xfs_ioend_pool) | |
1629 | goto out_destroy_ioend_zone; | |
1630 | ||
1631 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1632 | "xfs_log_ticket"); | |
1633 | if (!xfs_log_ticket_zone) | |
1634 | goto out_destroy_ioend_pool; | |
1635 | ||
1636 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1637 | "xfs_bmap_free_item"); | |
1638 | if (!xfs_bmap_free_item_zone) | |
1639 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1640 | |
9f8868ff CH |
1641 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1642 | "xfs_btree_cur"); | |
1643 | if (!xfs_btree_cur_zone) | |
1644 | goto out_destroy_bmap_free_item_zone; | |
1645 | ||
1646 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1647 | "xfs_da_state"); | |
1648 | if (!xfs_da_state_zone) | |
1649 | goto out_destroy_btree_cur_zone; | |
1650 | ||
9f8868ff CH |
1651 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
1652 | if (!xfs_ifork_zone) | |
1d9025e5 | 1653 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1654 | |
1655 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1656 | if (!xfs_trans_zone) | |
1657 | goto out_destroy_ifork_zone; | |
1658 | ||
e98c414f CH |
1659 | xfs_log_item_desc_zone = |
1660 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1661 | "xfs_log_item_desc"); | |
1662 | if (!xfs_log_item_desc_zone) | |
1663 | goto out_destroy_trans_zone; | |
1664 | ||
9f8868ff CH |
1665 | /* |
1666 | * The size of the zone allocated buf log item is the maximum | |
1667 | * size possible under XFS. This wastes a little bit of memory, | |
1668 | * but it is much faster. | |
1669 | */ | |
77c1a08f DC |
1670 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1671 | "xfs_buf_item"); | |
9f8868ff | 1672 | if (!xfs_buf_item_zone) |
e98c414f | 1673 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1674 | |
1675 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1676 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1677 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1678 | if (!xfs_efd_zone) | |
1679 | goto out_destroy_buf_item_zone; | |
1680 | ||
1681 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1682 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1683 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1684 | if (!xfs_efi_zone) | |
1685 | goto out_destroy_efd_zone; | |
1686 | ||
1687 | xfs_inode_zone = | |
1688 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1689 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1690 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1691 | if (!xfs_inode_zone) |
1692 | goto out_destroy_efi_zone; | |
1693 | ||
1694 | xfs_ili_zone = | |
1695 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1696 | KM_ZONE_SPREAD, NULL); | |
1697 | if (!xfs_ili_zone) | |
1698 | goto out_destroy_inode_zone; | |
3ebe7d2d DC |
1699 | xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item), |
1700 | "xfs_icr"); | |
1701 | if (!xfs_icreate_zone) | |
1702 | goto out_destroy_ili_zone; | |
9f8868ff | 1703 | |
9f8868ff CH |
1704 | return 0; |
1705 | ||
3ebe7d2d DC |
1706 | out_destroy_ili_zone: |
1707 | kmem_zone_destroy(xfs_ili_zone); | |
9f8868ff CH |
1708 | out_destroy_inode_zone: |
1709 | kmem_zone_destroy(xfs_inode_zone); | |
1710 | out_destroy_efi_zone: | |
1711 | kmem_zone_destroy(xfs_efi_zone); | |
1712 | out_destroy_efd_zone: | |
1713 | kmem_zone_destroy(xfs_efd_zone); | |
1714 | out_destroy_buf_item_zone: | |
1715 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1716 | out_destroy_log_item_desc_zone: |
1717 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1718 | out_destroy_trans_zone: |
1719 | kmem_zone_destroy(xfs_trans_zone); | |
1720 | out_destroy_ifork_zone: | |
1721 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1722 | out_destroy_da_state_zone: |
1723 | kmem_zone_destroy(xfs_da_state_zone); | |
1724 | out_destroy_btree_cur_zone: | |
1725 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1726 | out_destroy_bmap_free_item_zone: | |
1727 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1728 | out_destroy_log_ticket_zone: | |
1729 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1730 | out_destroy_ioend_pool: | |
1731 | mempool_destroy(xfs_ioend_pool); | |
1732 | out_destroy_ioend_zone: | |
1733 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1734 | out: |
1735 | return -ENOMEM; | |
1736 | } | |
1737 | ||
1738 | STATIC void | |
1739 | xfs_destroy_zones(void) | |
1740 | { | |
8c0a8537 KS |
1741 | /* |
1742 | * Make sure all delayed rcu free are flushed before we | |
1743 | * destroy caches. | |
1744 | */ | |
1745 | rcu_barrier(); | |
3ebe7d2d | 1746 | kmem_zone_destroy(xfs_icreate_zone); |
9f8868ff CH |
1747 | kmem_zone_destroy(xfs_ili_zone); |
1748 | kmem_zone_destroy(xfs_inode_zone); | |
1749 | kmem_zone_destroy(xfs_efi_zone); | |
1750 | kmem_zone_destroy(xfs_efd_zone); | |
1751 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1752 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1753 | kmem_zone_destroy(xfs_trans_zone); |
1754 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1755 | kmem_zone_destroy(xfs_da_state_zone); |
1756 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1757 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1758 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1759 | mempool_destroy(xfs_ioend_pool); | |
1760 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1761 | |
1762 | } | |
1da177e4 | 1763 | |
0bf6a5bd DC |
1764 | STATIC int __init |
1765 | xfs_init_workqueues(void) | |
1766 | { | |
c999a223 DC |
1767 | /* |
1768 | * The allocation workqueue can be used in memory reclaim situations | |
1769 | * (writepage path), and parallelism is only limited by the number of | |
1770 | * AGs in all the filesystems mounted. Hence use the default large | |
1771 | * max_active value for this workqueue. | |
1772 | */ | |
8018ec08 BF |
1773 | xfs_alloc_wq = alloc_workqueue("xfsalloc", |
1774 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0); | |
c999a223 | 1775 | if (!xfs_alloc_wq) |
5889608d | 1776 | return -ENOMEM; |
c999a223 | 1777 | |
0bf6a5bd | 1778 | return 0; |
0bf6a5bd DC |
1779 | } |
1780 | ||
39411f81 | 1781 | STATIC void |
0bf6a5bd DC |
1782 | xfs_destroy_workqueues(void) |
1783 | { | |
c999a223 | 1784 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1785 | } |
1786 | ||
1da177e4 | 1787 | STATIC int __init |
9f8868ff | 1788 | init_xfs_fs(void) |
1da177e4 LT |
1789 | { |
1790 | int error; | |
1da177e4 | 1791 | |
65795910 CH |
1792 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1793 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1794 | |
9f8868ff | 1795 | xfs_dir_startup(); |
1da177e4 | 1796 | |
8758280f | 1797 | error = xfs_init_zones(); |
9f8868ff CH |
1798 | if (error) |
1799 | goto out; | |
1800 | ||
0bf6a5bd | 1801 | error = xfs_init_workqueues(); |
9f8868ff | 1802 | if (error) |
0b1b213f | 1803 | goto out_destroy_zones; |
9f8868ff | 1804 | |
0bf6a5bd DC |
1805 | error = xfs_mru_cache_init(); |
1806 | if (error) | |
1807 | goto out_destroy_wq; | |
1808 | ||
ce8e922c | 1809 | error = xfs_buf_init(); |
9f8868ff | 1810 | if (error) |
1919adda | 1811 | goto out_mru_cache_uninit; |
9f8868ff CH |
1812 | |
1813 | error = xfs_init_procfs(); | |
1814 | if (error) | |
1815 | goto out_buf_terminate; | |
1816 | ||
1817 | error = xfs_sysctl_register(); | |
1818 | if (error) | |
1819 | goto out_cleanup_procfs; | |
1da177e4 | 1820 | |
3d871226 BF |
1821 | xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); |
1822 | if (!xfs_kset) { | |
1823 | error = -ENOMEM; | |
1824 | goto out_sysctl_unregister;; | |
1825 | } | |
1826 | ||
65b65735 BF |
1827 | #ifdef DEBUG |
1828 | xfs_dbg_kobj.kobject.kset = xfs_kset; | |
1829 | error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); | |
a05931ce | 1830 | if (error) |
3d871226 | 1831 | goto out_kset_unregister; |
65b65735 BF |
1832 | #endif |
1833 | ||
1834 | error = xfs_qm_init(); | |
1835 | if (error) | |
1836 | goto out_remove_kobj; | |
1da177e4 LT |
1837 | |
1838 | error = register_filesystem(&xfs_fs_type); | |
1839 | if (error) | |
a05931ce | 1840 | goto out_qm_exit; |
1da177e4 LT |
1841 | return 0; |
1842 | ||
a05931ce CH |
1843 | out_qm_exit: |
1844 | xfs_qm_exit(); | |
65b65735 BF |
1845 | out_remove_kobj: |
1846 | #ifdef DEBUG | |
1847 | xfs_sysfs_del(&xfs_dbg_kobj); | |
3d871226 | 1848 | out_kset_unregister: |
65b65735 | 1849 | #endif |
3d871226 | 1850 | kset_unregister(xfs_kset); |
9f8868ff CH |
1851 | out_sysctl_unregister: |
1852 | xfs_sysctl_unregister(); | |
1853 | out_cleanup_procfs: | |
1854 | xfs_cleanup_procfs(); | |
1855 | out_buf_terminate: | |
ce8e922c | 1856 | xfs_buf_terminate(); |
9f8868ff CH |
1857 | out_mru_cache_uninit: |
1858 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1859 | out_destroy_wq: |
1860 | xfs_destroy_workqueues(); | |
9f8868ff | 1861 | out_destroy_zones: |
8758280f | 1862 | xfs_destroy_zones(); |
9f8868ff | 1863 | out: |
1da177e4 LT |
1864 | return error; |
1865 | } | |
1866 | ||
1867 | STATIC void __exit | |
9f8868ff | 1868 | exit_xfs_fs(void) |
1da177e4 | 1869 | { |
a05931ce | 1870 | xfs_qm_exit(); |
1da177e4 | 1871 | unregister_filesystem(&xfs_fs_type); |
65b65735 BF |
1872 | #ifdef DEBUG |
1873 | xfs_sysfs_del(&xfs_dbg_kobj); | |
1874 | #endif | |
3d871226 | 1875 | kset_unregister(xfs_kset); |
9f8868ff CH |
1876 | xfs_sysctl_unregister(); |
1877 | xfs_cleanup_procfs(); | |
ce8e922c | 1878 | xfs_buf_terminate(); |
9f8868ff | 1879 | xfs_mru_cache_uninit(); |
0bf6a5bd | 1880 | xfs_destroy_workqueues(); |
8758280f | 1881 | xfs_destroy_zones(); |
1da177e4 LT |
1882 | } |
1883 | ||
1884 | module_init(init_xfs_fs); | |
1885 | module_exit(exit_xfs_fs); | |
1886 | ||
1887 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1888 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1889 | MODULE_LICENSE("GPL"); |