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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scotta805bad2006-06-19 08:40:27 +10002 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
Nathan Scott7b718762005-11-02 14:58:39 +11003 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000018
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include "xfs.h"
Dave Chinner70a9883c2013-10-23 10:36:05 +110020#include "xfs_shared.h"
Dave Chinner6ca1c902013-08-12 20:49:26 +100021#include "xfs_format.h"
Dave Chinner239880e2013-10-23 10:50:10 +110022#include "xfs_log_format.h"
23#include "xfs_trans_resv.h"
Nathan Scotta844f452005-11-02 14:38:42 +110024#include "xfs_inum.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include "xfs_sb.h"
Nathan Scotta844f452005-11-02 14:38:42 +110026#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include "xfs_mount.h"
Dave Chinner57062782013-10-15 09:17:51 +110028#include "xfs_da_format.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include "xfs_inode.h"
Nathan Scotta844f452005-11-02 14:38:42 +110030#include "xfs_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include "xfs_bmap.h"
Dave Chinnera4fbe6a2013-10-23 10:51:50 +110032#include "xfs_alloc.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include "xfs_error.h"
Christoph Hellwig9909c4a2007-10-11 18:11:14 +100034#include "xfs_fsops.h"
Dave Chinner239880e2013-10-23 10:50:10 +110035#include "xfs_trans.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include "xfs_buf_item.h"
Dave Chinner239880e2013-10-23 10:50:10 +110037#include "xfs_log.h"
David Chinnera67d7c52007-11-23 16:29:32 +110038#include "xfs_log_priv.h"
Christoph Hellwig9f8868f2008-07-18 17:11:46 +100039#include "xfs_da_btree.h"
Dave Chinner2b9ab5a2013-08-12 20:49:37 +100040#include "xfs_dir2.h"
Christoph Hellwig9f8868f2008-07-18 17:11:46 +100041#include "xfs_extfree_item.h"
42#include "xfs_mru_cache.h"
43#include "xfs_inode_item.h"
Dave Chinner6d8b79c2012-10-08 21:56:09 +110044#include "xfs_icache.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000045#include "xfs_trace.h"
Dave Chinner3ebe7d22013-06-27 16:04:53 +100046#include "xfs_icreate_item.h"
Dave Chinnera4fbe6a2013-10-23 10:51:50 +110047#include "xfs_dinode.h"
48#include "xfs_filestream.h"
49#include "xfs_quota.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
51#include <linux/namei.h>
52#include <linux/init.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090053#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070054#include <linux/mount.h>
Christoph Hellwig0829c362005-09-02 16:58:49 +100055#include <linux/mempool.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070056#include <linux/writeback.h>
Christoph Hellwig4df08c52005-09-05 08:34:18 +100057#include <linux/kthread.h>
Nigel Cunningham7dfb7102006-12-06 20:34:23 -080058#include <linux/freezer.h>
Christoph Hellwig62a877e2008-07-18 17:12:36 +100059#include <linux/parser.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
Alexey Dobriyanb87221d2009-09-21 17:01:09 -070061static const struct super_operations xfs_super_operations;
David Chinner7989cb82007-02-10 18:34:56 +110062static kmem_zone_t *xfs_ioend_zone;
Christoph Hellwig0829c362005-09-02 16:58:49 +100063mempool_t *xfs_ioend_pool;
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
David Chinnera67d7c52007-11-23 16:29:32 +110065#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
66#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
67#define MNTOPT_LOGDEV "logdev" /* log device */
68#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
69#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
70#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
David Chinnera67d7c52007-11-23 16:29:32 +110071#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
72#define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
73#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
74#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
75#define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
76#define MNTOPT_MTPT "mtpt" /* filesystem mount point */
77#define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
78#define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
79#define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
80#define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
81#define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
82#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
83#define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
84 * unwritten extent conversion */
85#define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
David Chinnera67d7c52007-11-23 16:29:32 +110086#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
Carlos Maiolino08bf5402012-09-20 10:32:37 -030087#define MNTOPT_32BITINODE "inode32" /* inode allocation limited to
88 * XFS_MAXINUMBER_32 */
David Chinnera67d7c52007-11-23 16:29:32 +110089#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
90#define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
91#define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
92#define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
93 * in stat(). */
94#define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
95#define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
96#define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */
97#define MNTOPT_QUOTA "quota" /* disk quotas (user) */
98#define MNTOPT_NOQUOTA "noquota" /* no quotas */
99#define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */
100#define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */
101#define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */
102#define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */
103#define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */
104#define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */
105#define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */
106#define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */
107#define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */
108#define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */
Christoph Hellwige84661a2011-05-20 13:45:32 +0000109#define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */
110#define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */
111#define MNTOPT_DISCARD "discard" /* Discard unused blocks */
112#define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */
David Chinnera67d7c52007-11-23 16:29:32 +1100113
Christoph Hellwig62a877e2008-07-18 17:12:36 +1000114/*
115 * Table driven mount option parser.
116 *
117 * Currently only used for remount, but it will be used for mount
118 * in the future, too.
119 */
120enum {
Carlos Maiolino2ea03922012-09-20 10:32:41 -0300121 Opt_barrier,
122 Opt_nobarrier,
123 Opt_inode64,
124 Opt_inode32,
125 Opt_err
Christoph Hellwig62a877e2008-07-18 17:12:36 +1000126};
127
Steven Whitehousea447c092008-10-13 10:46:57 +0100128static const match_table_t tokens = {
Christoph Hellwig62a877e2008-07-18 17:12:36 +1000129 {Opt_barrier, "barrier"},
130 {Opt_nobarrier, "nobarrier"},
Carlos Maiolinoc3a58fe2012-08-17 18:19:38 -0300131 {Opt_inode64, "inode64"},
Carlos Maiolino2ea03922012-09-20 10:32:41 -0300132 {Opt_inode32, "inode32"},
Christoph Hellwig62a877e2008-07-18 17:12:36 +1000133 {Opt_err, NULL}
134};
135
136
David Chinnera67d7c52007-11-23 16:29:32 +1100137STATIC unsigned long
Abhijit Pawara17164e2013-01-09 19:34:42 +0530138suffix_kstrtoint(char *s, unsigned int base, int *res)
David Chinnera67d7c52007-11-23 16:29:32 +1100139{
Abhijit Pawara17164e2013-01-09 19:34:42 +0530140 int last, shift_left_factor = 0, _res;
David Chinnera67d7c52007-11-23 16:29:32 +1100141 char *value = s;
142
143 last = strlen(value) - 1;
144 if (value[last] == 'K' || value[last] == 'k') {
145 shift_left_factor = 10;
146 value[last] = '\0';
147 }
148 if (value[last] == 'M' || value[last] == 'm') {
149 shift_left_factor = 20;
150 value[last] = '\0';
151 }
152 if (value[last] == 'G' || value[last] == 'g') {
153 shift_left_factor = 30;
154 value[last] = '\0';
155 }
156
Abhijit Pawara17164e2013-01-09 19:34:42 +0530157 if (kstrtoint(s, base, &_res))
158 return -EINVAL;
159 *res = _res << shift_left_factor;
160 return 0;
David Chinnera67d7c52007-11-23 16:29:32 +1100161}
162
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100163/*
164 * This function fills in xfs_mount_t fields based on mount args.
165 * Note: the superblock has _not_ yet been read in.
166 *
167 * Note that this function leaks the various device name allocations on
168 * failure. The caller takes care of them.
169 */
David Chinnera67d7c52007-11-23 16:29:32 +1100170STATIC int
171xfs_parseargs(
172 struct xfs_mount *mp,
Christoph Hellwig288699f2010-06-23 18:11:15 +1000173 char *options)
David Chinnera67d7c52007-11-23 16:29:32 +1100174{
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100175 struct super_block *sb = mp->m_super;
Abhijit Pawara17164e2013-01-09 19:34:42 +0530176 char *this_char, *value;
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100177 int dsunit = 0;
178 int dswidth = 0;
179 int iosize = 0;
Christoph Hellwiga5687782009-02-09 08:37:39 +0100180 __uint8_t iosizelog = 0;
David Chinnera67d7c52007-11-23 16:29:32 +1100181
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100182 /*
Dave Chinner4f107002011-03-07 10:00:35 +1100183 * set up the mount name first so all the errors will refer to the
184 * correct device.
185 */
186 mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL);
187 if (!mp->m_fsname)
Dave Chinner24513372014-06-25 14:58:08 +1000188 return -ENOMEM;
Dave Chinner4f107002011-03-07 10:00:35 +1100189 mp->m_fsname_len = strlen(mp->m_fsname) + 1;
190
191 /*
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100192 * Copy binary VFS mount flags we are interested in.
193 */
194 if (sb->s_flags & MS_RDONLY)
195 mp->m_flags |= XFS_MOUNT_RDONLY;
196 if (sb->s_flags & MS_DIRSYNC)
197 mp->m_flags |= XFS_MOUNT_DIRSYNC;
198 if (sb->s_flags & MS_SYNCHRONOUS)
199 mp->m_flags |= XFS_MOUNT_WSYNC;
200
201 /*
202 * Set some default flags that could be cleared by the mount option
203 * parsing.
204 */
205 mp->m_flags |= XFS_MOUNT_BARRIER;
206 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
Carlos Maiolino08bf5402012-09-20 10:32:37 -0300207#if !XFS_BIG_INUMS
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100208 mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
Carlos Maiolino08bf5402012-09-20 10:32:37 -0300209#endif
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100210
211 /*
212 * These can be overridden by the mount option parsing.
213 */
214 mp->m_logbufs = -1;
215 mp->m_logbsize = -1;
David Chinnera67d7c52007-11-23 16:29:32 +1100216
217 if (!options)
218 goto done;
219
David Chinnera67d7c52007-11-23 16:29:32 +1100220 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) {
Dave Chinner4f107002011-03-07 10:00:35 +1100228 xfs_warn(mp, "%s option requires an argument",
David Chinnera67d7c52007-11-23 16:29:32 +1100229 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000230 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100231 }
Abhijit Pawara17164e2013-01-09 19:34:42 +0530232 if (kstrtoint(value, 10, &mp->m_logbufs))
Dave Chinner24513372014-06-25 14:58:08 +1000233 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100234 } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
235 if (!value || !*value) {
Dave Chinner4f107002011-03-07 10:00:35 +1100236 xfs_warn(mp, "%s option requires an argument",
David Chinnera67d7c52007-11-23 16:29:32 +1100237 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000238 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100239 }
Abhijit Pawara17164e2013-01-09 19:34:42 +0530240 if (suffix_kstrtoint(value, 10, &mp->m_logbsize))
Dave Chinner24513372014-06-25 14:58:08 +1000241 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100242 } else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
243 if (!value || !*value) {
Dave Chinner4f107002011-03-07 10:00:35 +1100244 xfs_warn(mp, "%s option requires an argument",
David Chinnera67d7c52007-11-23 16:29:32 +1100245 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000246 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100247 }
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100248 mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL);
249 if (!mp->m_logname)
Dave Chinner24513372014-06-25 14:58:08 +1000250 return -ENOMEM;
David Chinnera67d7c52007-11-23 16:29:32 +1100251 } else if (!strcmp(this_char, MNTOPT_MTPT)) {
Dave Chinner4f107002011-03-07 10:00:35 +1100252 xfs_warn(mp, "%s option not allowed on this system",
Christoph Hellwig288699f2010-06-23 18:11:15 +1000253 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000254 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100255 } else if (!strcmp(this_char, MNTOPT_RTDEV)) {
256 if (!value || !*value) {
Dave Chinner4f107002011-03-07 10:00:35 +1100257 xfs_warn(mp, "%s option requires an argument",
David Chinnera67d7c52007-11-23 16:29:32 +1100258 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000259 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100260 }
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100261 mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL);
262 if (!mp->m_rtname)
Dave Chinner24513372014-06-25 14:58:08 +1000263 return -ENOMEM;
David Chinnera67d7c52007-11-23 16:29:32 +1100264 } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
265 if (!value || !*value) {
Dave Chinner4f107002011-03-07 10:00:35 +1100266 xfs_warn(mp, "%s option requires an argument",
David Chinnera67d7c52007-11-23 16:29:32 +1100267 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000268 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100269 }
Abhijit Pawara17164e2013-01-09 19:34:42 +0530270 if (kstrtoint(value, 10, &iosize))
Dave Chinner24513372014-06-25 14:58:08 +1000271 return -EINVAL;
Christoph Hellwig1ec79442008-10-30 17:55:08 +1100272 iosizelog = ffs(iosize) - 1;
David Chinnera67d7c52007-11-23 16:29:32 +1100273 } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
274 if (!value || !*value) {
Dave Chinner4f107002011-03-07 10:00:35 +1100275 xfs_warn(mp, "%s option requires an argument",
David Chinnera67d7c52007-11-23 16:29:32 +1100276 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000277 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100278 }
Abhijit Pawara17164e2013-01-09 19:34:42 +0530279 if (suffix_kstrtoint(value, 10, &iosize))
Dave Chinner24513372014-06-25 14:58:08 +1000280 return -EINVAL;
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100281 iosizelog = ffs(iosize) - 1;
David Chinnera67d7c52007-11-23 16:29:32 +1100282 } else if (!strcmp(this_char, MNTOPT_GRPID) ||
283 !strcmp(this_char, MNTOPT_BSDGROUPS)) {
284 mp->m_flags |= XFS_MOUNT_GRPID;
285 } else if (!strcmp(this_char, MNTOPT_NOGRPID) ||
286 !strcmp(this_char, MNTOPT_SYSVGROUPS)) {
287 mp->m_flags &= ~XFS_MOUNT_GRPID;
288 } else if (!strcmp(this_char, MNTOPT_WSYNC)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100289 mp->m_flags |= XFS_MOUNT_WSYNC;
David Chinnera67d7c52007-11-23 16:29:32 +1100290 } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100291 mp->m_flags |= XFS_MOUNT_NORECOVERY;
David Chinnera67d7c52007-11-23 16:29:32 +1100292 } else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100293 mp->m_flags |= XFS_MOUNT_NOALIGN;
David Chinnera67d7c52007-11-23 16:29:32 +1100294 } else if (!strcmp(this_char, MNTOPT_SWALLOC)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100295 mp->m_flags |= XFS_MOUNT_SWALLOC;
David Chinnera67d7c52007-11-23 16:29:32 +1100296 } else if (!strcmp(this_char, MNTOPT_SUNIT)) {
297 if (!value || !*value) {
Dave Chinner4f107002011-03-07 10:00:35 +1100298 xfs_warn(mp, "%s option requires an argument",
David Chinnera67d7c52007-11-23 16:29:32 +1100299 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000300 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100301 }
Abhijit Pawara17164e2013-01-09 19:34:42 +0530302 if (kstrtoint(value, 10, &dsunit))
Dave Chinner24513372014-06-25 14:58:08 +1000303 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100304 } else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
305 if (!value || !*value) {
Dave Chinner4f107002011-03-07 10:00:35 +1100306 xfs_warn(mp, "%s option requires an argument",
David Chinnera67d7c52007-11-23 16:29:32 +1100307 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000308 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100309 }
Abhijit Pawara17164e2013-01-09 19:34:42 +0530310 if (kstrtoint(value, 10, &dswidth))
Dave Chinner24513372014-06-25 14:58:08 +1000311 return -EINVAL;
Carlos Maiolino08bf5402012-09-20 10:32:37 -0300312 } else if (!strcmp(this_char, MNTOPT_32BITINODE)) {
313 mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
David Chinnera67d7c52007-11-23 16:29:32 +1100314 } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100315 mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
David Chinnera67d7c52007-11-23 16:29:32 +1100316#if !XFS_BIG_INUMS
Dave Chinner4f107002011-03-07 10:00:35 +1100317 xfs_warn(mp, "%s option not allowed on this system",
David Chinnera67d7c52007-11-23 16:29:32 +1100318 this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000319 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100320#endif
321 } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100322 mp->m_flags |= XFS_MOUNT_NOUUID;
David Chinnera67d7c52007-11-23 16:29:32 +1100323 } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100324 mp->m_flags |= XFS_MOUNT_BARRIER;
David Chinnera67d7c52007-11-23 16:29:32 +1100325 } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100326 mp->m_flags &= ~XFS_MOUNT_BARRIER;
David Chinnera67d7c52007-11-23 16:29:32 +1100327 } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100328 mp->m_flags |= XFS_MOUNT_IKEEP;
David Chinnera67d7c52007-11-23 16:29:32 +1100329 } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100330 mp->m_flags &= ~XFS_MOUNT_IKEEP;
David Chinnera67d7c52007-11-23 16:29:32 +1100331 } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100332 mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE;
David Chinnera67d7c52007-11-23 16:29:32 +1100333 } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100334 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
David Chinnera67d7c52007-11-23 16:29:32 +1100335 } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100336 mp->m_flags |= XFS_MOUNT_ATTR2;
David Chinnera67d7c52007-11-23 16:29:32 +1100337 } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100338 mp->m_flags &= ~XFS_MOUNT_ATTR2;
339 mp->m_flags |= XFS_MOUNT_NOATTR2;
David Chinnera67d7c52007-11-23 16:29:32 +1100340 } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100341 mp->m_flags |= XFS_MOUNT_FILESTREAMS;
David Chinnera67d7c52007-11-23 16:29:32 +1100342 } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) {
Chandra Seetharaman4177af32012-01-23 17:31:43 +0000343 mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
344 mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
345 mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
David Chinnera67d7c52007-11-23 16:29:32 +1100346 } else if (!strcmp(this_char, MNTOPT_QUOTA) ||
347 !strcmp(this_char, MNTOPT_UQUOTA) ||
348 !strcmp(this_char, MNTOPT_USRQUOTA)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100349 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
350 XFS_UQUOTA_ENFD);
David Chinnera67d7c52007-11-23 16:29:32 +1100351 } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) ||
352 !strcmp(this_char, MNTOPT_UQUOTANOENF)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100353 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
354 mp->m_qflags &= ~XFS_UQUOTA_ENFD;
David Chinnera67d7c52007-11-23 16:29:32 +1100355 } else if (!strcmp(this_char, MNTOPT_PQUOTA) ||
356 !strcmp(this_char, MNTOPT_PRJQUOTA)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100357 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500358 XFS_PQUOTA_ENFD);
David Chinnera67d7c52007-11-23 16:29:32 +1100359 } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100360 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500361 mp->m_qflags &= ~XFS_PQUOTA_ENFD;
David Chinnera67d7c52007-11-23 16:29:32 +1100362 } else if (!strcmp(this_char, MNTOPT_GQUOTA) ||
363 !strcmp(this_char, MNTOPT_GRPQUOTA)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100364 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500365 XFS_GQUOTA_ENFD);
David Chinnera67d7c52007-11-23 16:29:32 +1100366 } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100367 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500368 mp->m_qflags &= ~XFS_GQUOTA_ENFD;
Dave Chinner71e330b2010-05-21 14:37:18 +1000369 } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) {
Christoph Hellwig242d6212011-08-24 05:57:51 +0000370 xfs_warn(mp,
Christoph Hellwig93b8a582011-12-06 21:58:07 +0000371 "delaylog is the default now, option is deprecated.");
372 } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) {
373 xfs_warn(mp,
374 "nodelaylog support has been removed, option is deprecated.");
Christoph Hellwige84661a2011-05-20 13:45:32 +0000375 } else if (!strcmp(this_char, MNTOPT_DISCARD)) {
376 mp->m_flags |= XFS_MOUNT_DISCARD;
377 } else if (!strcmp(this_char, MNTOPT_NODISCARD)) {
378 mp->m_flags &= ~XFS_MOUNT_DISCARD;
David Chinnera67d7c52007-11-23 16:29:32 +1100379 } else if (!strcmp(this_char, "ihashsize")) {
Dave Chinner4f107002011-03-07 10:00:35 +1100380 xfs_warn(mp,
381 "ihashsize no longer used, option is deprecated.");
David Chinnera67d7c52007-11-23 16:29:32 +1100382 } else if (!strcmp(this_char, "osyncisdsync")) {
Dave Chinner4f107002011-03-07 10:00:35 +1100383 xfs_warn(mp,
384 "osyncisdsync has no effect, option is deprecated.");
Christoph Hellwiga64afb02010-07-20 17:50:52 +1000385 } else if (!strcmp(this_char, "osyncisosync")) {
Dave Chinner4f107002011-03-07 10:00:35 +1100386 xfs_warn(mp,
387 "osyncisosync has no effect, option is deprecated.");
David Chinnera67d7c52007-11-23 16:29:32 +1100388 } else if (!strcmp(this_char, "irixsgid")) {
Dave Chinner4f107002011-03-07 10:00:35 +1100389 xfs_warn(mp,
390 "irixsgid is now a sysctl(2) variable, option is deprecated.");
David Chinnera67d7c52007-11-23 16:29:32 +1100391 } else {
Dave Chinner4f107002011-03-07 10:00:35 +1100392 xfs_warn(mp, "unknown mount option [%s].", this_char);
Dave Chinner24513372014-06-25 14:58:08 +1000393 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100394 }
395 }
396
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100397 /*
398 * no recovery flag requires a read-only mount
399 */
400 if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
401 !(mp->m_flags & XFS_MOUNT_RDONLY)) {
Dave Chinner4f107002011-03-07 10:00:35 +1100402 xfs_warn(mp, "no-recovery mounts must be read-only.");
Dave Chinner24513372014-06-25 14:58:08 +1000403 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100404 }
405
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100406 if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) {
Dave Chinner4f107002011-03-07 10:00:35 +1100407 xfs_warn(mp,
408 "sunit and swidth options incompatible with the noalign option");
Dave Chinner24513372014-06-25 14:58:08 +1000409 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100410 }
411
Christoph Hellwig7d095252009-06-08 15:33:32 +0200412#ifndef CONFIG_XFS_QUOTA
413 if (XFS_IS_QUOTA_RUNNING(mp)) {
Dave Chinner4f107002011-03-07 10:00:35 +1100414 xfs_warn(mp, "quota support not available in this kernel.");
Dave Chinner24513372014-06-25 14:58:08 +1000415 return -EINVAL;
Christoph Hellwig7d095252009-06-08 15:33:32 +0200416 }
417#endif
418
David Chinnera67d7c52007-11-23 16:29:32 +1100419 if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
Dave Chinner4f107002011-03-07 10:00:35 +1100420 xfs_warn(mp, "sunit and swidth must be specified together");
Dave Chinner24513372014-06-25 14:58:08 +1000421 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100422 }
423
424 if (dsunit && (dswidth % dsunit != 0)) {
Dave Chinner4f107002011-03-07 10:00:35 +1100425 xfs_warn(mp,
426 "stripe width (%d) must be a multiple of the stripe unit (%d)",
David Chinnera67d7c52007-11-23 16:29:32 +1100427 dswidth, dsunit);
Dave Chinner24513372014-06-25 14:58:08 +1000428 return -EINVAL;
David Chinnera67d7c52007-11-23 16:29:32 +1100429 }
430
David Chinnera67d7c52007-11-23 16:29:32 +1100431done:
Jie Liu39a45d82013-05-02 19:27:47 +0800432 if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100433 /*
434 * At this point the superblock has not been read
435 * in, therefore we do not know the block size.
436 * Before the mount call ends we will convert
437 * these to FSBs.
438 */
Jie Liu39a45d82013-05-02 19:27:47 +0800439 mp->m_dalign = dsunit;
440 mp->m_swidth = dswidth;
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100441 }
442
443 if (mp->m_logbufs != -1 &&
444 mp->m_logbufs != 0 &&
445 (mp->m_logbufs < XLOG_MIN_ICLOGS ||
446 mp->m_logbufs > XLOG_MAX_ICLOGS)) {
Dave Chinner4f107002011-03-07 10:00:35 +1100447 xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100448 mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
Dave Chinner24513372014-06-25 14:58:08 +1000449 return -EINVAL;
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100450 }
451 if (mp->m_logbsize != -1 &&
452 mp->m_logbsize != 0 &&
453 (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
454 mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
455 !is_power_of_2(mp->m_logbsize))) {
Dave Chinner4f107002011-03-07 10:00:35 +1100456 xfs_warn(mp,
457 "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100458 mp->m_logbsize);
Dave Chinner24513372014-06-25 14:58:08 +1000459 return -EINVAL;
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100460 }
461
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100462 if (iosizelog) {
463 if (iosizelog > XFS_MAX_IO_LOG ||
464 iosizelog < XFS_MIN_IO_LOG) {
Dave Chinner4f107002011-03-07 10:00:35 +1100465 xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100466 iosizelog, XFS_MIN_IO_LOG,
467 XFS_MAX_IO_LOG);
Dave Chinner24513372014-06-25 14:58:08 +1000468 return -EINVAL;
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100469 }
470
471 mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
472 mp->m_readio_log = iosizelog;
473 mp->m_writeio_log = iosizelog;
474 }
475
David Chinnera67d7c52007-11-23 16:29:32 +1100476 return 0;
477}
478
479struct proc_xfs_info {
480 int flag;
481 char *str;
482};
483
484STATIC int
485xfs_showargs(
486 struct xfs_mount *mp,
487 struct seq_file *m)
488{
489 static struct proc_xfs_info xfs_info_set[] = {
490 /* the few simple ones we can get from the mount struct */
Josef Jeff Sipek1bd960e2008-02-29 13:58:40 +1100491 { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP },
David Chinnera67d7c52007-11-23 16:29:32 +1100492 { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
David Chinnera67d7c52007-11-23 16:29:32 +1100493 { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
494 { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
495 { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
496 { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
David Chinnera67d7c52007-11-23 16:29:32 +1100497 { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 },
498 { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM },
David Chinnera67d7c52007-11-23 16:29:32 +1100499 { XFS_MOUNT_GRPID, "," MNTOPT_GRPID },
Christoph Hellwige84661a2011-05-20 13:45:32 +0000500 { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD },
Carlos Maiolino08bf5402012-09-20 10:32:37 -0300501 { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE },
David Chinnera67d7c52007-11-23 16:29:32 +1100502 { 0, NULL }
503 };
504 static struct proc_xfs_info xfs_info_unset[] = {
505 /* the few simple ones we can get from the mount struct */
David Chinnera67d7c52007-11-23 16:29:32 +1100506 { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO },
507 { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER },
508 { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE },
509 { 0, NULL }
510 };
511 struct proc_xfs_info *xfs_infop;
512
513 for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) {
514 if (mp->m_flags & xfs_infop->flag)
515 seq_puts(m, xfs_infop->str);
516 }
517 for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) {
518 if (!(mp->m_flags & xfs_infop->flag))
519 seq_puts(m, xfs_infop->str);
520 }
521
522 if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
523 seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk",
524 (int)(1 << mp->m_writeio_log) >> 10);
525
526 if (mp->m_logbufs > 0)
527 seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
528 if (mp->m_logbsize > 0)
529 seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
530
531 if (mp->m_logname)
532 seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
533 if (mp->m_rtname)
534 seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
535
536 if (mp->m_dalign > 0)
537 seq_printf(m, "," MNTOPT_SUNIT "=%d",
538 (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
539 if (mp->m_swidth > 0)
540 seq_printf(m, "," MNTOPT_SWIDTH "=%d",
541 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
542
543 if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD))
544 seq_puts(m, "," MNTOPT_USRQUOTA);
545 else if (mp->m_qflags & XFS_UQUOTA_ACCT)
546 seq_puts(m, "," MNTOPT_UQUOTANOENF);
547
Alex Elder988abe42009-09-02 17:02:24 -0500548 if (mp->m_qflags & XFS_PQUOTA_ACCT) {
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500549 if (mp->m_qflags & XFS_PQUOTA_ENFD)
Alex Elder988abe42009-09-02 17:02:24 -0500550 seq_puts(m, "," MNTOPT_PRJQUOTA);
551 else
552 seq_puts(m, "," MNTOPT_PQUOTANOENF);
Chandra Seetharamand892d582013-07-19 17:36:02 -0500553 }
554 if (mp->m_qflags & XFS_GQUOTA_ACCT) {
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500555 if (mp->m_qflags & XFS_GQUOTA_ENFD)
Alex Elder988abe42009-09-02 17:02:24 -0500556 seq_puts(m, "," MNTOPT_GRPQUOTA);
557 else
558 seq_puts(m, "," MNTOPT_GQUOTANOENF);
559 }
David Chinnera67d7c52007-11-23 16:29:32 +1100560
561 if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
562 seq_puts(m, "," MNTOPT_NOQUOTA);
563
564 return 0;
565}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566__uint64_t
567xfs_max_file_offset(
568 unsigned int blockshift)
569{
570 unsigned int pagefactor = 1;
571 unsigned int bitshift = BITS_PER_LONG - 1;
572
573 /* Figure out maximum filesize, on Linux this can depend on
574 * the filesystem blocksize (on 32 bit platforms).
Christoph Hellwigebdec242010-10-06 10:47:23 +0200575 * __block_write_begin does this in an [unsigned] long...
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 * page->index << (PAGE_CACHE_SHIFT - bbits)
577 * So, for page sized blocks (4K on 32 bit platforms),
578 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
579 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
580 * but for smaller blocksizes it is less (bbits = log2 bsize).
581 * Note1: get_block_t takes a long (implicit cast from above)
582 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
583 * can optionally convert the [unsigned] long from above into
584 * an [unsigned] long long.
585 */
586
587#if BITS_PER_LONG == 32
Bartlomiej Zolnierkiewicz90c699a2009-06-19 08:08:50 +0200588# if defined(CONFIG_LBDAF)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 ASSERT(sizeof(sector_t) == 8);
590 pagefactor = PAGE_CACHE_SIZE;
591 bitshift = BITS_PER_LONG;
592# else
593 pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
594# endif
595#endif
596
597 return (((__uint64_t)pagefactor) << bitshift) - 1;
598}
599
Eric Sandeen9de67c32014-07-24 20:51:54 +1000600/*
601 * xfs_set_inode32() and xfs_set_inode64() are passed an agcount
602 * because in the growfs case, mp->m_sb.sb_agcount is not updated
603 * yet to the potentially higher ag count.
604 */
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300605xfs_agnumber_t
Eric Sandeen9de67c32014-07-24 20:51:54 +1000606xfs_set_inode32(struct xfs_mount *mp, xfs_agnumber_t agcount)
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300607{
608 xfs_agnumber_t index = 0;
Carlos Maiolino4056c1d2012-09-20 10:32:40 -0300609 xfs_agnumber_t maxagi = 0;
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300610 xfs_sb_t *sbp = &mp->m_sb;
611 xfs_agnumber_t max_metadata;
Eric Sandeen54aa61f2014-07-24 20:53:10 +1000612 xfs_agino_t agino;
613 xfs_ino_t ino;
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300614 xfs_perag_t *pag;
615
616 /* Calculate how much should be reserved for inodes to meet
617 * the max inode percentage.
618 */
619 if (mp->m_maxicount) {
620 __uint64_t icount;
621
622 icount = sbp->sb_dblocks * sbp->sb_imax_pct;
623 do_div(icount, 100);
624 icount += sbp->sb_agblocks - 1;
625 do_div(icount, sbp->sb_agblocks);
626 max_metadata = icount;
627 } else {
Eric Sandeen9de67c32014-07-24 20:51:54 +1000628 max_metadata = agcount;
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300629 }
630
Eric Sandeen54aa61f2014-07-24 20:53:10 +1000631 agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0);
632
Eric Sandeen9de67c32014-07-24 20:51:54 +1000633 for (index = 0; index < agcount; index++) {
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300634 ino = XFS_AGINO_TO_INO(mp, index, agino);
Carlos Maiolino4056c1d2012-09-20 10:32:40 -0300635
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300636 if (ino > XFS_MAXINUMBER_32) {
Carlos Maiolino4056c1d2012-09-20 10:32:40 -0300637 pag = xfs_perag_get(mp, index);
638 pag->pagi_inodeok = 0;
639 pag->pagf_metadata = 0;
640 xfs_perag_put(pag);
641 continue;
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300642 }
643
644 pag = xfs_perag_get(mp, index);
645 pag->pagi_inodeok = 1;
Carlos Maiolino4056c1d2012-09-20 10:32:40 -0300646 maxagi++;
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300647 if (index < max_metadata)
648 pag->pagf_metadata = 1;
649 xfs_perag_put(pag);
650 }
Carlos Maiolino4056c1d2012-09-20 10:32:40 -0300651 mp->m_flags |= (XFS_MOUNT_32BITINODES |
652 XFS_MOUNT_SMALL_INUMS);
653
654 return maxagi;
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300655}
656
657xfs_agnumber_t
Eric Sandeen9de67c32014-07-24 20:51:54 +1000658xfs_set_inode64(struct xfs_mount *mp, xfs_agnumber_t agcount)
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300659{
660 xfs_agnumber_t index = 0;
661
Eric Sandeen9de67c32014-07-24 20:51:54 +1000662 for (index = 0; index < agcount; index++) {
Carlos Maiolino2d2194f2012-09-20 10:32:38 -0300663 struct xfs_perag *pag;
664
665 pag = xfs_perag_get(mp, index);
666 pag->pagi_inodeok = 1;
667 pag->pagf_metadata = 0;
668 xfs_perag_put(pag);
669 }
670
671 /* There is no need for lock protection on m_flags,
672 * the rw_semaphore of the VFS superblock is locked
673 * during mount/umount/remount operations, so this is
674 * enough to avoid concurency on the m_flags field
675 */
676 mp->m_flags &= ~(XFS_MOUNT_32BITINODES |
677 XFS_MOUNT_SMALL_INUMS);
678 return index;
679}
680
Hannes Eder3180e662009-03-04 19:34:10 +0100681STATIC int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682xfs_blkdev_get(
683 xfs_mount_t *mp,
684 const char *name,
685 struct block_device **bdevp)
686{
687 int error = 0;
688
Tejun Heod4d77622010-11-13 11:55:18 +0100689 *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
690 mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 if (IS_ERR(*bdevp)) {
692 error = PTR_ERR(*bdevp);
Dave Chinner4f107002011-03-07 10:00:35 +1100693 xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 }
695
Dave Chinner24513372014-06-25 14:58:08 +1000696 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697}
698
Hannes Eder3180e662009-03-04 19:34:10 +0100699STATIC void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700xfs_blkdev_put(
701 struct block_device *bdev)
702{
703 if (bdev)
Tejun Heoe525fd82010-11-13 11:55:17 +0100704 blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705}
706
Christoph Hellwigf538d4d2005-11-02 10:26:59 +1100707void
708xfs_blkdev_issue_flush(
709 xfs_buftarg_t *buftarg)
710{
Shaohua Li7582df52012-04-24 21:23:46 +0800711 blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL);
Christoph Hellwigf538d4d2005-11-02 10:26:59 +1100712}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000714STATIC void
715xfs_close_devices(
716 struct xfs_mount *mp)
717{
718 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
Lachlan McIlroyc032bfc2008-07-18 17:13:12 +1000719 struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
Christoph Hellwigb7963132009-03-03 14:48:37 -0500720 xfs_free_buftarg(mp, mp->m_logdev_targp);
Lachlan McIlroyc032bfc2008-07-18 17:13:12 +1000721 xfs_blkdev_put(logdev);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000722 }
723 if (mp->m_rtdev_targp) {
Lachlan McIlroyc032bfc2008-07-18 17:13:12 +1000724 struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
Christoph Hellwigb7963132009-03-03 14:48:37 -0500725 xfs_free_buftarg(mp, mp->m_rtdev_targp);
Lachlan McIlroyc032bfc2008-07-18 17:13:12 +1000726 xfs_blkdev_put(rtdev);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000727 }
Christoph Hellwigb7963132009-03-03 14:48:37 -0500728 xfs_free_buftarg(mp, mp->m_ddev_targp);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000729}
730
731/*
732 * The file system configurations are:
733 * (1) device (partition) with data and internal log
734 * (2) logical volume with data and log subvolumes.
735 * (3) logical volume with data, log, and realtime subvolumes.
736 *
737 * We only have to handle opening the log and realtime volumes here if
738 * they are present. The data subvolume has already been opened by
739 * get_sb_bdev() and is stored in sb->s_bdev.
740 */
741STATIC int
742xfs_open_devices(
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100743 struct xfs_mount *mp)
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000744{
745 struct block_device *ddev = mp->m_super->s_bdev;
746 struct block_device *logdev = NULL, *rtdev = NULL;
747 int error;
748
749 /*
750 * Open real time and log devices - order is important.
751 */
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100752 if (mp->m_logname) {
753 error = xfs_blkdev_get(mp, mp->m_logname, &logdev);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000754 if (error)
755 goto out;
756 }
757
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100758 if (mp->m_rtname) {
759 error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000760 if (error)
761 goto out_close_logdev;
762
763 if (rtdev == ddev || rtdev == logdev) {
Dave Chinner4f107002011-03-07 10:00:35 +1100764 xfs_warn(mp,
765 "Cannot mount filesystem with identical rtdev and ddev/logdev.");
Dave Chinner24513372014-06-25 14:58:08 +1000766 error = -EINVAL;
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000767 goto out_close_rtdev;
768 }
769 }
770
771 /*
772 * Setup xfs_mount buffer target pointers
773 */
Dave Chinner24513372014-06-25 14:58:08 +1000774 error = -ENOMEM;
Eric Sandeen34dcefd2014-04-14 19:01:00 +1000775 mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000776 if (!mp->m_ddev_targp)
777 goto out_close_rtdev;
778
779 if (rtdev) {
Eric Sandeen34dcefd2014-04-14 19:01:00 +1000780 mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000781 if (!mp->m_rtdev_targp)
782 goto out_free_ddev_targ;
783 }
784
785 if (logdev && logdev != ddev) {
Eric Sandeen34dcefd2014-04-14 19:01:00 +1000786 mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000787 if (!mp->m_logdev_targp)
788 goto out_free_rtdev_targ;
789 } else {
790 mp->m_logdev_targp = mp->m_ddev_targp;
791 }
792
793 return 0;
794
795 out_free_rtdev_targ:
796 if (mp->m_rtdev_targp)
Christoph Hellwigb7963132009-03-03 14:48:37 -0500797 xfs_free_buftarg(mp, mp->m_rtdev_targp);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000798 out_free_ddev_targ:
Christoph Hellwigb7963132009-03-03 14:48:37 -0500799 xfs_free_buftarg(mp, mp->m_ddev_targp);
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000800 out_close_rtdev:
801 if (rtdev)
802 xfs_blkdev_put(rtdev);
803 out_close_logdev:
804 if (logdev && logdev != ddev)
805 xfs_blkdev_put(logdev);
806 out:
807 return error;
808}
809
Christoph Hellwige34b5622008-05-20 15:10:36 +1000810/*
811 * Setup xfs_mount buffer target pointers based on superblock
812 */
813STATIC int
814xfs_setup_devices(
815 struct xfs_mount *mp)
816{
817 int error;
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000818
Eric Sandeena96c4152014-04-14 19:00:29 +1000819 error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize);
Christoph Hellwige34b5622008-05-20 15:10:36 +1000820 if (error)
821 return error;
822
823 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
824 unsigned int log_sector_size = BBSIZE;
825
826 if (xfs_sb_version_hassector(&mp->m_sb))
827 log_sector_size = mp->m_sb.sb_logsectsize;
828 error = xfs_setsize_buftarg(mp->m_logdev_targp,
Christoph Hellwige34b5622008-05-20 15:10:36 +1000829 log_sector_size);
830 if (error)
831 return error;
832 }
833 if (mp->m_rtdev_targp) {
834 error = xfs_setsize_buftarg(mp->m_rtdev_targp,
Christoph Hellwige34b5622008-05-20 15:10:36 +1000835 mp->m_sb.sb_sectsize);
836 if (error)
837 return error;
838 }
839
840 return 0;
841}
Christoph Hellwig19f354d2008-05-20 11:31:13 +1000842
Christoph Hellwigaa6bf012012-02-29 09:53:48 +0000843STATIC int
844xfs_init_mount_workqueues(
845 struct xfs_mount *mp)
846{
847 mp->m_data_workqueue = alloc_workqueue("xfs-data/%s",
848 WQ_MEM_RECLAIM, 0, mp->m_fsname);
849 if (!mp->m_data_workqueue)
850 goto out;
851
852 mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
853 WQ_MEM_RECLAIM, 0, mp->m_fsname);
854 if (!mp->m_unwritten_workqueue)
855 goto out_destroy_data_iodone_queue;
856
Dave Chinner4c2d5422012-04-23 17:54:32 +1000857 mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s",
858 WQ_MEM_RECLAIM, 0, mp->m_fsname);
859 if (!mp->m_cil_workqueue)
860 goto out_destroy_unwritten;
Dave Chinner58896082012-10-08 21:56:05 +1100861
862 mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s",
Tejun Heo7a378c92013-07-30 08:40:26 -0400863 0, 0, mp->m_fsname);
Dave Chinner58896082012-10-08 21:56:05 +1100864 if (!mp->m_reclaim_workqueue)
865 goto out_destroy_cil;
866
867 mp->m_log_workqueue = alloc_workqueue("xfs-log/%s",
Tejun Heo7a378c92013-07-30 08:40:26 -0400868 0, 0, mp->m_fsname);
Dave Chinner58896082012-10-08 21:56:05 +1100869 if (!mp->m_log_workqueue)
870 goto out_destroy_reclaim;
871
Brian Foster579b62f2012-11-06 09:50:47 -0500872 mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s",
Tejun Heo7a378c92013-07-30 08:40:26 -0400873 0, 0, mp->m_fsname);
Brian Foster579b62f2012-11-06 09:50:47 -0500874 if (!mp->m_eofblocks_workqueue)
875 goto out_destroy_log;
876
Christoph Hellwigaa6bf012012-02-29 09:53:48 +0000877 return 0;
878
Brian Foster579b62f2012-11-06 09:50:47 -0500879out_destroy_log:
880 destroy_workqueue(mp->m_log_workqueue);
Dave Chinner58896082012-10-08 21:56:05 +1100881out_destroy_reclaim:
882 destroy_workqueue(mp->m_reclaim_workqueue);
883out_destroy_cil:
884 destroy_workqueue(mp->m_cil_workqueue);
Dave Chinner4c2d5422012-04-23 17:54:32 +1000885out_destroy_unwritten:
886 destroy_workqueue(mp->m_unwritten_workqueue);
Christoph Hellwigaa6bf012012-02-29 09:53:48 +0000887out_destroy_data_iodone_queue:
888 destroy_workqueue(mp->m_data_workqueue);
889out:
890 return -ENOMEM;
891}
892
893STATIC void
894xfs_destroy_mount_workqueues(
895 struct xfs_mount *mp)
896{
Brian Foster579b62f2012-11-06 09:50:47 -0500897 destroy_workqueue(mp->m_eofblocks_workqueue);
Dave Chinner58896082012-10-08 21:56:05 +1100898 destroy_workqueue(mp->m_log_workqueue);
899 destroy_workqueue(mp->m_reclaim_workqueue);
Dave Chinner4c2d5422012-04-23 17:54:32 +1000900 destroy_workqueue(mp->m_cil_workqueue);
Christoph Hellwigaa6bf012012-02-29 09:53:48 +0000901 destroy_workqueue(mp->m_data_workqueue);
902 destroy_workqueue(mp->m_unwritten_workqueue);
903}
904
Dave Chinner9aa05002012-10-08 21:56:04 +1100905/*
906 * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK
907 * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting
908 * for IO to complete so that we effectively throttle multiple callers to the
909 * rate at which IO is completing.
910 */
911void
912xfs_flush_inodes(
913 struct xfs_mount *mp)
914{
915 struct super_block *sb = mp->m_super;
916
917 if (down_read_trylock(&sb->s_umount)) {
Jan Kara0dc83bd2014-02-21 11:19:04 +0100918 sync_inodes_sb(sb);
Dave Chinner9aa05002012-10-08 21:56:04 +1100919 up_read(&sb->s_umount);
920 }
921}
922
David Chinnerbf904242008-10-30 17:36:14 +1100923/* Catch misguided souls that try to use this interface on XFS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924STATIC struct inode *
Nathan Scotta50cd262006-03-14 14:06:18 +1100925xfs_fs_alloc_inode(
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 struct super_block *sb)
927{
David Chinnerbf904242008-10-30 17:36:14 +1100928 BUG();
Lachlan McIlroy493dca62008-10-30 17:36:52 +1100929 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930}
931
David Chinnerbf904242008-10-30 17:36:14 +1100932/*
David Chinner99fa8cb2008-10-30 17:36:40 +1100933 * Now that the generic code is guaranteed not to be accessing
934 * the linux inode, we can reclaim the inode.
David Chinnerbf904242008-10-30 17:36:14 +1100935 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936STATIC void
Nathan Scotta50cd262006-03-14 14:06:18 +1100937xfs_fs_destroy_inode(
Christoph Hellwig848ce8f2009-09-29 13:48:56 +0000938 struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939{
Christoph Hellwig848ce8f2009-09-29 13:48:56 +0000940 struct xfs_inode *ip = XFS_I(inode);
941
Christoph Hellwigcca28fb2010-06-24 11:57:09 +1000942 trace_xfs_destroy_inode(ip);
David Chinner99fa8cb2008-10-30 17:36:40 +1100943
944 XFS_STATS_INC(vn_reclaim);
Christoph Hellwig848ce8f2009-09-29 13:48:56 +0000945
Christoph Hellwig848ce8f2009-09-29 13:48:56 +0000946 ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0);
947
948 /*
949 * We should never get here with one of the reclaim flags already set.
950 */
951 ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE));
952 ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM));
953
954 /*
Dave Chinner57817c62010-01-10 23:51:47 +0000955 * We always use background reclaim here because even if the
956 * inode is clean, it still may be under IO and hence we have
957 * to take the flush lock. The background reclaim path handles
958 * this more efficiently than we can here, so simply let background
959 * reclaim tear down all inodes.
Christoph Hellwig848ce8f2009-09-29 13:48:56 +0000960 */
Dave Chinner57817c62010-01-10 23:51:47 +0000961 xfs_inode_set_reclaim_tag(ip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962}
963
David Chinner07c8f672008-10-30 16:11:59 +1100964/*
965 * Slab object creation initialisation for the XFS inode.
966 * This covers only the idempotent fields in the XFS inode;
967 * all other fields need to be initialised on allocation
Uwe Kleine-Königb5950762010-11-01 15:38:34 -0400968 * from the slab. This avoids the need to repeatedly initialise
David Chinner07c8f672008-10-30 16:11:59 +1100969 * fields in the xfs inode that left in the initialise state
970 * when freeing the inode.
971 */
David Chinnerbf904242008-10-30 17:36:14 +1100972STATIC void
973xfs_fs_inode_init_once(
David Chinner07c8f672008-10-30 16:11:59 +1100974 void *inode)
975{
976 struct xfs_inode *ip = inode;
977
978 memset(ip, 0, sizeof(struct xfs_inode));
David Chinnerbf904242008-10-30 17:36:14 +1100979
980 /* vfs inode */
981 inode_init_once(VFS_I(ip));
982
983 /* xfs inode */
David Chinner07c8f672008-10-30 16:11:59 +1100984 atomic_set(&ip->i_pincount, 0);
985 spin_lock_init(&ip->i_flags_lock);
David Chinner07c8f672008-10-30 16:11:59 +1100986
987 mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
988 "xfsino", ip->i_ino);
David Chinner07c8f672008-10-30 16:11:59 +1100989}
990
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991STATIC void
Al Virob57922d2010-06-07 14:34:48 -0400992xfs_fs_evict_inode(
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993 struct inode *inode)
994{
Christoph Hellwig1543d792007-08-29 11:46:47 +1000995 xfs_inode_t *ip = XFS_I(inode);
Christoph Hellwig56d433e2005-09-05 08:23:54 +1000996
Christoph Hellwig4f59af72012-07-04 11:13:33 -0400997 ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock));
998
Al Virob57922d2010-06-07 14:34:48 -0400999 trace_xfs_evict_inode(ip);
Christoph Hellwigcca28fb2010-06-24 11:57:09 +10001000
Johannes Weiner91b0abe2014-04-03 14:47:49 -07001001 truncate_inode_pages_final(&inode->i_data);
Jan Karadbd57682012-05-03 14:48:02 +02001002 clear_inode(inode);
David Chinner99fa8cb2008-10-30 17:36:40 +11001003 XFS_STATS_INC(vn_rele);
1004 XFS_STATS_INC(vn_remove);
1005 XFS_STATS_DEC(vn_active);
Christoph Hellwig56d433e2005-09-05 08:23:54 +10001006
David Chinner99fa8cb2008-10-30 17:36:40 +11001007 xfs_inactive(ip);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008}
1009
Dave Chinner5132ba82012-03-22 05:15:10 +00001010/*
1011 * We do an unlocked check for XFS_IDONTCACHE here because we are already
1012 * serialised against cache hits here via the inode->i_lock and igrab() in
1013 * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be
1014 * racing with us, and it avoids needing to grab a spinlock here for every inode
1015 * we drop the final reference on.
1016 */
1017STATIC int
1018xfs_fs_drop_inode(
1019 struct inode *inode)
1020{
1021 struct xfs_inode *ip = XFS_I(inode);
1022
1023 return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE);
1024}
1025
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026STATIC void
Christoph Hellwiga7381592008-08-13 16:04:05 +10001027xfs_free_fsname(
1028 struct xfs_mount *mp)
1029{
1030 kfree(mp->m_fsname);
1031 kfree(mp->m_rtname);
1032 kfree(mp->m_logname);
1033}
1034
1035STATIC void
Nathan Scotta50cd262006-03-14 14:06:18 +11001036xfs_fs_put_super(
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037 struct super_block *sb)
1038{
Christoph Hellwig745f6912007-08-30 17:20:39 +10001039 struct xfs_mount *mp = XFS_M(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040
Dave Chinner7e185302012-10-08 21:56:00 +11001041 xfs_filestream_unmount(mp);
1042 xfs_unmountfs(mp);
1043
Christoph Hellwig62033002008-08-13 16:50:21 +10001044 xfs_freesb(mp);
Christoph Hellwigc962fb72008-05-20 15:10:52 +10001045 xfs_icsb_destroy_counters(mp);
Christoph Hellwigaa6bf012012-02-29 09:53:48 +00001046 xfs_destroy_mount_workqueues(mp);
Christoph Hellwig19f354d2008-05-20 11:31:13 +10001047 xfs_close_devices(mp);
Christoph Hellwiga7381592008-08-13 16:04:05 +10001048 xfs_free_fsname(mp);
Christoph Hellwigc962fb72008-05-20 15:10:52 +10001049 kfree(mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050}
1051
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052STATIC int
Christoph Hellwig69961a22009-10-06 20:29:28 +00001053xfs_fs_sync_fs(
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 struct super_block *sb,
1055 int wait)
1056{
Christoph Hellwig745f6912007-08-30 17:20:39 +10001057 struct xfs_mount *mp = XFS_M(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058
Lachlan McIlroye893bff2007-10-12 11:13:35 +10001059 /*
Christoph Hellwig34625c62011-12-06 21:58:12 +00001060 * Doing anything during the async pass would be counterproductive.
Lachlan McIlroye893bff2007-10-12 11:13:35 +10001061 */
Christoph Hellwig34625c62011-12-06 21:58:12 +00001062 if (!wait)
Christoph Hellwig69961a22009-10-06 20:29:28 +00001063 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064
Dave Chinner34061f52012-10-08 21:56:06 +11001065 xfs_log_force(mp, XFS_LOG_SYNC);
Christoph Hellwig69961a22009-10-06 20:29:28 +00001066 if (laptop_mode) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067 /*
1068 * The disk must be active because we're syncing.
Dave Chinnerf661f1e2012-10-08 21:56:02 +11001069 * We schedule log work now (now that the disk is
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070 * active) instead of later (when it might not be).
1071 */
Dave Chinnerf661f1e2012-10-08 21:56:02 +11001072 flush_delayed_work(&mp->m_log->l_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 }
1074
Christoph Hellwig69961a22009-10-06 20:29:28 +00001075 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076}
1077
1078STATIC int
Nathan Scotta50cd262006-03-14 14:06:18 +11001079xfs_fs_statfs(
David Howells726c3342006-06-23 02:02:58 -07001080 struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081 struct kstatfs *statp)
1082{
Christoph Hellwig4ca488e2007-10-11 18:09:40 +10001083 struct xfs_mount *mp = XFS_M(dentry->d_sb);
1084 xfs_sb_t *sbp = &mp->m_sb;
Christoph Hellwig7d095252009-06-08 15:33:32 +02001085 struct xfs_inode *ip = XFS_I(dentry->d_inode);
Christoph Hellwig4ca488e2007-10-11 18:09:40 +10001086 __uint64_t fakeinos, id;
1087 xfs_extlen_t lsize;
Stuart Brodsky2fe33662010-08-24 11:46:05 +10001088 __int64_t ffree;
Christoph Hellwig4ca488e2007-10-11 18:09:40 +10001089
1090 statp->f_type = XFS_SB_MAGIC;
1091 statp->f_namelen = MAXNAMELEN - 1;
1092
1093 id = huge_encode_dev(mp->m_ddev_targp->bt_dev);
1094 statp->f_fsid.val[0] = (u32)id;
1095 statp->f_fsid.val[1] = (u32)(id >> 32);
1096
Christoph Hellwigd4d90b52008-04-22 17:34:37 +10001097 xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT);
Christoph Hellwig4ca488e2007-10-11 18:09:40 +10001098
1099 spin_lock(&mp->m_sb_lock);
1100 statp->f_bsize = sbp->sb_blocksize;
1101 lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
1102 statp->f_blocks = sbp->sb_dblocks - lsize;
1103 statp->f_bfree = statp->f_bavail =
1104 sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
1105 fakeinos = statp->f_bfree << sbp->sb_inopblog;
Christoph Hellwig4ca488e2007-10-11 18:09:40 +10001106 statp->f_files =
1107 MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
1108 if (mp->m_maxicount)
Christoph Hellwiga19d9f82009-03-29 09:51:08 +02001109 statp->f_files = min_t(typeof(statp->f_files),
1110 statp->f_files,
1111 mp->m_maxicount);
Stuart Brodsky2fe33662010-08-24 11:46:05 +10001112
1113 /* make sure statp->f_ffree does not underflow */
1114 ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree);
1115 statp->f_ffree = max_t(__int64_t, ffree, 0);
1116
Christoph Hellwig4ca488e2007-10-11 18:09:40 +10001117 spin_unlock(&mp->m_sb_lock);
1118
Jie Liuda5bf952012-04-12 03:59:57 +00001119 if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) &&
Chandra Seetharaman83e782e2013-06-27 17:25:10 -05001120 ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) ==
1121 (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))
Christoph Hellwig7d095252009-06-08 15:33:32 +02001122 xfs_qm_statvfs(ip, statp);
Christoph Hellwig4ca488e2007-10-11 18:09:40 +10001123 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001124}
1125
Eric Sandeend5db0f92010-02-05 22:59:53 +00001126STATIC void
1127xfs_save_resvblks(struct xfs_mount *mp)
1128{
1129 __uint64_t resblks = 0;
1130
1131 mp->m_resblks_save = mp->m_resblks;
1132 xfs_reserve_blocks(mp, &resblks, NULL);
1133}
1134
1135STATIC void
1136xfs_restore_resvblks(struct xfs_mount *mp)
1137{
1138 __uint64_t resblks;
1139
1140 if (mp->m_resblks_save) {
1141 resblks = mp->m_resblks_save;
1142 mp->m_resblks_save = 0;
1143 } else
1144 resblks = xfs_default_resblks(mp);
1145
1146 xfs_reserve_blocks(mp, &resblks, NULL);
1147}
1148
Dave Chinnerc7eea6f2012-10-08 21:56:07 +11001149/*
1150 * Trigger writeback of all the dirty metadata in the file system.
1151 *
1152 * This ensures that the metadata is written to their location on disk rather
1153 * than just existing in transactions in the log. This means after a quiesce
Dave Chinnerc75921a2012-10-08 21:56:08 +11001154 * there is no log replay required to write the inodes to disk - this is the
1155 * primary difference between a sync and a quiesce.
Dave Chinnerc7eea6f2012-10-08 21:56:07 +11001156 *
Dave Chinnerc75921a2012-10-08 21:56:08 +11001157 * Note: xfs_log_quiesce() stops background log work - the callers must ensure
1158 * it is started again when appropriate.
Dave Chinnerc7eea6f2012-10-08 21:56:07 +11001159 */
Dave Chinner632b89e2013-10-29 22:11:58 +11001160static void
Dave Chinnerc7eea6f2012-10-08 21:56:07 +11001161xfs_quiesce_attr(
1162 struct xfs_mount *mp)
1163{
1164 int error = 0;
1165
1166 /* wait for all modifications to complete */
1167 while (atomic_read(&mp->m_active_trans) > 0)
1168 delay(100);
1169
1170 /* force the log to unpin objects from the now complete transactions */
1171 xfs_log_force(mp, XFS_LOG_SYNC);
1172
1173 /* reclaim inodes to do any IO before the freeze completes */
1174 xfs_reclaim_inodes(mp, 0);
1175 xfs_reclaim_inodes(mp, SYNC_WAIT);
1176
Dave Chinnerc75921a2012-10-08 21:56:08 +11001177 /* Push the superblock and write an unmount record */
1178 error = xfs_log_sbcount(mp);
1179 if (error)
1180 xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
1181 "Frozen image may not be consistent.");
Dave Chinnerc7eea6f2012-10-08 21:56:07 +11001182 /*
1183 * Just warn here till VFS can correctly support
1184 * read-only remount without racing.
1185 */
1186 WARN_ON(atomic_read(&mp->m_active_trans) != 0);
1187
Dave Chinnerc75921a2012-10-08 21:56:08 +11001188 xfs_log_quiesce(mp);
Dave Chinnerc7eea6f2012-10-08 21:56:07 +11001189}
1190
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191STATIC int
Nathan Scotta50cd262006-03-14 14:06:18 +11001192xfs_fs_remount(
Linus Torvalds1da177e2005-04-16 15:20:36 -07001193 struct super_block *sb,
1194 int *flags,
1195 char *options)
1196{
Christoph Hellwig745f6912007-08-30 17:20:39 +10001197 struct xfs_mount *mp = XFS_M(sb);
Eric Sandeen9de67c32014-07-24 20:51:54 +10001198 xfs_sb_t *sbp = &mp->m_sb;
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001199 substring_t args[MAX_OPT_ARGS];
1200 char *p;
Christoph Hellwig7884bc82009-01-19 02:04:07 +01001201 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202
Theodore Ts'o02b99842014-03-13 10:14:33 -04001203 sync_filesystem(sb);
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001204 while ((p = strsep(&options, ",")) != NULL) {
1205 int token;
Christoph Hellwigbdd907b2008-05-20 15:10:44 +10001206
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001207 if (!*p)
1208 continue;
Christoph Hellwig48b62a12008-05-20 11:30:39 +10001209
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001210 token = match_token(p, tokens, args);
1211 switch (token) {
1212 case Opt_barrier:
Christoph Hellwig48b62a12008-05-20 11:30:39 +10001213 mp->m_flags |= XFS_MOUNT_BARRIER;
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001214 break;
1215 case Opt_nobarrier:
Christoph Hellwig48b62a12008-05-20 11:30:39 +10001216 mp->m_flags &= ~XFS_MOUNT_BARRIER;
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001217 break;
Carlos Maiolinoc3a58fe2012-08-17 18:19:38 -03001218 case Opt_inode64:
Eric Sandeen9de67c32014-07-24 20:51:54 +10001219 mp->m_maxagi = xfs_set_inode64(mp, sbp->sb_agcount);
Carlos Maiolinoc3a58fe2012-08-17 18:19:38 -03001220 break;
Carlos Maiolino2ea03922012-09-20 10:32:41 -03001221 case Opt_inode32:
Eric Sandeen9de67c32014-07-24 20:51:54 +10001222 mp->m_maxagi = xfs_set_inode32(mp, sbp->sb_agcount);
Carlos Maiolino2ea03922012-09-20 10:32:41 -03001223 break;
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001224 default:
Christoph Hellwig6efdf282008-09-17 16:49:33 +10001225 /*
1226 * Logically we would return an error here to prevent
1227 * users from believing they might have changed
1228 * mount options using remount which can't be changed.
1229 *
1230 * But unfortunately mount(8) adds all options from
1231 * mtab and fstab to the mount arguments in some cases
1232 * so we can't blindly reject options, but have to
1233 * check for each specified option if it actually
1234 * differs from the currently set option and only
1235 * reject it if that's the case.
1236 *
1237 * Until that is implemented we return success for
1238 * every remount request, and silently ignore all
1239 * options that we can't actually change.
1240 */
1241#if 0
Dave Chinner4f107002011-03-07 10:00:35 +11001242 xfs_info(mp,
Eric Sandeen08e96e12013-10-11 20:59:05 -05001243 "mount option \"%s\" not supported for remount", p);
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001244 return -EINVAL;
Christoph Hellwig6efdf282008-09-17 16:49:33 +10001245#else
Christoph Hellwig6c5e51d2008-10-12 14:30:44 +02001246 break;
Christoph Hellwig6efdf282008-09-17 16:49:33 +10001247#endif
Christoph Hellwig48b62a12008-05-20 11:30:39 +10001248 }
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001249 }
1250
Christoph Hellwig7884bc82009-01-19 02:04:07 +01001251 /* ro -> rw */
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001252 if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) {
1253 mp->m_flags &= ~XFS_MOUNT_RDONLY;
Christoph Hellwig7884bc82009-01-19 02:04:07 +01001254
1255 /*
1256 * If this is the first remount to writeable state we
1257 * might have some superblock changes to update.
1258 */
1259 if (mp->m_update_flags) {
1260 error = xfs_mount_log_sb(mp, mp->m_update_flags);
1261 if (error) {
Dave Chinner4f107002011-03-07 10:00:35 +11001262 xfs_warn(mp, "failed to write sb changes");
Christoph Hellwig7884bc82009-01-19 02:04:07 +01001263 return error;
1264 }
1265 mp->m_update_flags = 0;
1266 }
Dave Chinnercbe132a2010-01-26 15:08:49 +11001267
1268 /*
1269 * Fill out the reserve pool if it is empty. Use the stashed
1270 * value if it is non-zero, otherwise go with the default.
1271 */
Eric Sandeend5db0f92010-02-05 22:59:53 +00001272 xfs_restore_resvblks(mp);
Dave Chinnerf661f1e2012-10-08 21:56:02 +11001273 xfs_log_work_queue(mp);
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001274 }
1275
1276 /* rw -> ro */
1277 if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) {
Dave Chinnercbe132a2010-01-26 15:08:49 +11001278 /*
Dave Chinner34061f52012-10-08 21:56:06 +11001279 * Before we sync the metadata, we need to free up the reserve
1280 * block pool so that the used block count in the superblock on
1281 * disk is correct at the end of the remount. Stash the current
1282 * reserve pool size so that if we get remounted rw, we can
1283 * return it to the same size.
Dave Chinnercbe132a2010-01-26 15:08:49 +11001284 */
Eric Sandeend5db0f92010-02-05 22:59:53 +00001285 xfs_save_resvblks(mp);
David Chinner76bf1052008-10-30 17:16:21 +11001286 xfs_quiesce_attr(mp);
Christoph Hellwig48b62a12008-05-20 11:30:39 +10001287 mp->m_flags |= XFS_MOUNT_RDONLY;
1288 }
1289
Christoph Hellwig62a877e2008-07-18 17:12:36 +10001290 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291}
1292
Christoph Hellwig9909c4a2007-10-11 18:11:14 +10001293/*
1294 * Second stage of a freeze. The data is already frozen so we only
David Chinner76bf1052008-10-30 17:16:21 +11001295 * need to take care of the metadata. Once that's done write a dummy
Christoph Hellwig9909c4a2007-10-11 18:11:14 +10001296 * record to dirty the log in case of a crash while frozen.
1297 */
Takashi Satoc4be0c12009-01-09 16:40:58 -08001298STATIC int
1299xfs_fs_freeze(
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300 struct super_block *sb)
1301{
Christoph Hellwig9909c4a2007-10-11 18:11:14 +10001302 struct xfs_mount *mp = XFS_M(sb);
1303
Eric Sandeend5db0f92010-02-05 22:59:53 +00001304 xfs_save_resvblks(mp);
David Chinner76bf1052008-10-30 17:16:21 +11001305 xfs_quiesce_attr(mp);
Dave Chinner24513372014-06-25 14:58:08 +10001306 return xfs_fs_log_dummy(mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307}
1308
1309STATIC int
Eric Sandeend5db0f92010-02-05 22:59:53 +00001310xfs_fs_unfreeze(
1311 struct super_block *sb)
1312{
1313 struct xfs_mount *mp = XFS_M(sb);
1314
1315 xfs_restore_resvblks(mp);
Dave Chinnerf661f1e2012-10-08 21:56:02 +11001316 xfs_log_work_queue(mp);
Eric Sandeend5db0f92010-02-05 22:59:53 +00001317 return 0;
1318}
1319
1320STATIC int
Nathan Scotta50cd262006-03-14 14:06:18 +11001321xfs_fs_show_options(
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 struct seq_file *m,
Al Viro34c80b12011-12-08 21:32:45 -05001323 struct dentry *root)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324{
Dave Chinner24513372014-06-25 14:58:08 +10001325 return xfs_showargs(XFS_M(root->d_sb), m);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326}
1327
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001328/*
1329 * This function fills in xfs_mount_t fields based on mount args.
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001330 * Note: the superblock _has_ now been read in.
1331 */
1332STATIC int
1333xfs_finish_flags(
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001334 struct xfs_mount *mp)
1335{
1336 int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
1337
Frederik Schwarzer025dfda2008-10-16 19:02:37 +02001338 /* Fail a mount where the logbuf is smaller than the log stripe */
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001339 if (xfs_sb_version_haslogv2(&mp->m_sb)) {
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001340 if (mp->m_logbsize <= 0 &&
1341 mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001342 mp->m_logbsize = mp->m_sb.sb_logsunit;
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001343 } else if (mp->m_logbsize > 0 &&
1344 mp->m_logbsize < mp->m_sb.sb_logsunit) {
Dave Chinner4f107002011-03-07 10:00:35 +11001345 xfs_warn(mp,
1346 "logbuf size must be greater than or equal to log stripe size");
Dave Chinner24513372014-06-25 14:58:08 +10001347 return -EINVAL;
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001348 }
1349 } else {
1350 /* Fail a mount if the logbuf is larger than 32K */
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001351 if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
Dave Chinner4f107002011-03-07 10:00:35 +11001352 xfs_warn(mp,
1353 "logbuf size for version 1 logs must be 16K or 32K");
Dave Chinner24513372014-06-25 14:58:08 +10001354 return -EINVAL;
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001355 }
1356 }
1357
1358 /*
Dave Chinnerd3eaace2013-06-05 12:09:09 +10001359 * V5 filesystems always use attr2 format for attributes.
1360 */
1361 if (xfs_sb_version_hascrc(&mp->m_sb) &&
1362 (mp->m_flags & XFS_MOUNT_NOATTR2)) {
1363 xfs_warn(mp,
1364"Cannot mount a V5 filesystem as %s. %s is always enabled for V5 filesystems.",
1365 MNTOPT_NOATTR2, MNTOPT_ATTR2);
Dave Chinner24513372014-06-25 14:58:08 +10001366 return -EINVAL;
Dave Chinnerd3eaace2013-06-05 12:09:09 +10001367 }
1368
1369 /*
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001370 * mkfs'ed attr2 will turn on attr2 mount unless explicitly
1371 * told by noattr2 to turn it off
1372 */
1373 if (xfs_sb_version_hasattr2(&mp->m_sb) &&
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001374 !(mp->m_flags & XFS_MOUNT_NOATTR2))
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001375 mp->m_flags |= XFS_MOUNT_ATTR2;
1376
1377 /*
1378 * prohibit r/w mounts of read-only filesystems
1379 */
1380 if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
Dave Chinner4f107002011-03-07 10:00:35 +11001381 xfs_warn(mp,
1382 "cannot mount a read-only filesystem as read-write");
Dave Chinner24513372014-06-25 14:58:08 +10001383 return -EROFS;
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001384 }
1385
Chandra Seetharamand892d582013-07-19 17:36:02 -05001386 if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) &&
1387 (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) &&
1388 !xfs_sb_version_has_pquotino(&mp->m_sb)) {
1389 xfs_warn(mp,
1390 "Super block does not support project and group quota together");
Dave Chinner24513372014-06-25 14:58:08 +10001391 return -EINVAL;
Chandra Seetharamand892d582013-07-19 17:36:02 -05001392 }
1393
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001394 return 0;
1395}
1396
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397STATIC int
Nathan Scotta50cd262006-03-14 14:06:18 +11001398xfs_fs_fill_super(
Linus Torvalds1da177e2005-04-16 15:20:36 -07001399 struct super_block *sb,
1400 void *data,
1401 int silent)
1402{
Christoph Hellwigf3dcc132008-03-27 18:00:54 +11001403 struct inode *root;
Christoph Hellwig745f6912007-08-30 17:20:39 +10001404 struct xfs_mount *mp = NULL;
Dave Chinner24513372014-06-25 14:58:08 +10001405 int flags = 0, error = -ENOMEM;
Christoph Hellwigbdd907b2008-05-20 15:10:44 +10001406
Christoph Hellwigc962fb72008-05-20 15:10:52 +10001407 mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL);
1408 if (!mp)
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001409 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410
Christoph Hellwigc962fb72008-05-20 15:10:52 +10001411 spin_lock_init(&mp->m_sb_lock);
Christoph Hellwigc962fb72008-05-20 15:10:52 +10001412 mutex_init(&mp->m_growlock);
1413 atomic_set(&mp->m_active_trans, 0);
Dave Chinner7e185302012-10-08 21:56:00 +11001414 INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker);
Brian Foster579b62f2012-11-06 09:50:47 -05001415 INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker);
Christoph Hellwig74394492007-08-30 17:21:22 +10001416
Christoph Hellwigb267ce92007-08-30 17:21:30 +10001417 mp->m_super = sb;
1418 sb->s_fs_info = mp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419
Christoph Hellwig288699f2010-06-23 18:11:15 +10001420 error = xfs_parseargs(mp, (char *)data);
Christoph Hellwig745f6912007-08-30 17:20:39 +10001421 if (error)
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001422 goto out_free_fsname;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423
1424 sb_min_blocksize(sb, BBSIZE);
Lachlan McIlroy0ec58512008-06-23 13:23:01 +10001425 sb->s_xattr = xfs_xattr_handlers;
Nathan Scotta50cd262006-03-14 14:06:18 +11001426 sb->s_export_op = &xfs_export_operations;
Christoph Hellwigfcafb712009-02-09 08:47:34 +01001427#ifdef CONFIG_XFS_QUOTA
Nathan Scotta50cd262006-03-14 14:06:18 +11001428 sb->s_qcop = &xfs_quotactl_operations;
Christoph Hellwigfcafb712009-02-09 08:47:34 +01001429#endif
Nathan Scotta50cd262006-03-14 14:06:18 +11001430 sb->s_op = &xfs_super_operations;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001432 if (silent)
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001433 flags |= XFS_MFSI_QUIET;
1434
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001435 error = xfs_open_devices(mp);
Christoph Hellwig19f354d2008-05-20 11:31:13 +10001436 if (error)
Christoph Hellwig288699f2010-06-23 18:11:15 +10001437 goto out_free_fsname;
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001438
Dave Chinner24513372014-06-25 14:58:08 +10001439 error = xfs_init_mount_workqueues(mp);
Christoph Hellwig61ba35d2010-09-30 02:25:54 +00001440 if (error)
1441 goto out_close_devices;
Christoph Hellwigc962fb72008-05-20 15:10:52 +10001442
Dave Chinner24513372014-06-25 14:58:08 +10001443 error = xfs_icsb_init_counters(mp);
Christoph Hellwigaa6bf012012-02-29 09:53:48 +00001444 if (error)
1445 goto out_destroy_workqueues;
1446
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001447 error = xfs_readsb(mp, flags);
1448 if (error)
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001449 goto out_destroy_counters;
1450
1451 error = xfs_finish_flags(mp);
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001452 if (error)
Christoph Hellwigeffa2ed2008-05-20 15:11:05 +10001453 goto out_free_sb;
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001454
Christoph Hellwige34b5622008-05-20 15:10:36 +10001455 error = xfs_setup_devices(mp);
Christoph Hellwig19f354d2008-05-20 11:31:13 +10001456 if (error)
Christoph Hellwigeffa2ed2008-05-20 15:11:05 +10001457 goto out_free_sb;
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001458
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001459 error = xfs_filestream_mount(mp);
1460 if (error)
Christoph Hellwigeffa2ed2008-05-20 15:11:05 +10001461 goto out_free_sb;
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001462
Dave Chinner704b2902011-03-26 09:14:57 +11001463 /*
1464 * we must configure the block size in the superblock before we run the
1465 * full mount process as the mount process can lookup and cache inodes.
Dave Chinner704b2902011-03-26 09:14:57 +11001466 */
Christoph Hellwig4ca488e2007-10-11 18:09:40 +10001467 sb->s_magic = XFS_SB_MAGIC;
1468 sb->s_blocksize = mp->m_sb.sb_blocksize;
1469 sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
Al Viro8de52772012-02-06 12:45:27 -05001471 sb->s_max_links = XFS_MAXLINK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472 sb->s_time_gran = 1;
1473 set_posix_acl_flag(sb);
1474
Dave Chinnerdc037ad2013-06-27 16:04:59 +10001475 /* version 5 superblocks support inode version counters. */
1476 if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5)
1477 sb->s_flags |= MS_I_VERSION;
1478
Dave Chinner8a00ebe2012-04-13 12:10:44 +00001479 error = xfs_mountfs(mp);
Christoph Hellwig2bcf6e92011-07-13 13:43:48 +02001480 if (error)
Dave Chinner7e185302012-10-08 21:56:00 +11001481 goto out_filestream_unmount;
Dave Chinner704b2902011-03-26 09:14:57 +11001482
David Chinner01651642008-08-13 15:45:15 +10001483 root = igrab(VFS_I(mp->m_rootip));
Christoph Hellwigf3dcc132008-03-27 18:00:54 +11001484 if (!root) {
Dave Chinner24513372014-06-25 14:58:08 +10001485 error = -ENOENT;
Dave Chinner8a00ebe2012-04-13 12:10:44 +00001486 goto out_unmount;
Christoph Hellwigcbc89dc2008-02-05 12:14:01 +11001487 }
Al Viro48fde702012-01-08 22:15:13 -05001488 sb->s_root = d_make_root(root);
Christoph Hellwigf3dcc132008-03-27 18:00:54 +11001489 if (!sb->s_root) {
Dave Chinner24513372014-06-25 14:58:08 +10001490 error = -ENOMEM;
Dave Chinner8a00ebe2012-04-13 12:10:44 +00001491 goto out_unmount;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492 }
Christoph Hellwig74394492007-08-30 17:21:22 +10001493
Dave Chinner7e185302012-10-08 21:56:00 +11001494 return 0;
1495
1496 out_filestream_unmount:
Christoph Hellwig120226c2008-05-20 15:11:11 +10001497 xfs_filestream_unmount(mp);
Christoph Hellwigeffa2ed2008-05-20 15:11:05 +10001498 out_free_sb:
1499 xfs_freesb(mp);
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001500 out_destroy_counters:
Christoph Hellwigc962fb72008-05-20 15:10:52 +10001501 xfs_icsb_destroy_counters(mp);
Christoph Hellwigaa6bf012012-02-29 09:53:48 +00001502out_destroy_workqueues:
1503 xfs_destroy_mount_workqueues(mp);
Christoph Hellwig61ba35d2010-09-30 02:25:54 +00001504 out_close_devices:
Christoph Hellwig19f354d2008-05-20 11:31:13 +10001505 xfs_close_devices(mp);
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001506 out_free_fsname:
1507 xfs_free_fsname(mp);
Christoph Hellwigc962fb72008-05-20 15:10:52 +10001508 kfree(mp);
Christoph Hellwig9d565ff2008-10-30 17:53:24 +11001509 out:
Dave Chinner24513372014-06-25 14:58:08 +10001510 return error;
Christoph Hellwigf8f15e42008-05-20 11:30:59 +10001511
Christoph Hellwig2bcf6e92011-07-13 13:43:48 +02001512 out_unmount:
Christoph Hellwige48ad312008-05-20 11:30:52 +10001513 xfs_filestream_unmount(mp);
Christoph Hellwig19f354d2008-05-20 11:31:13 +10001514 xfs_unmountfs(mp);
Christoph Hellwig62033002008-08-13 16:50:21 +10001515 goto out_free_sb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516}
1517
Al Viro152a0832010-07-25 00:46:55 +04001518STATIC struct dentry *
1519xfs_fs_mount(
Linus Torvalds1da177e2005-04-16 15:20:36 -07001520 struct file_system_type *fs_type,
1521 int flags,
1522 const char *dev_name,
Al Viro152a0832010-07-25 00:46:55 +04001523 void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524{
Al Viro152a0832010-07-25 00:46:55 +04001525 return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001526}
1527
Dave Chinner0a234c62013-08-28 10:17:57 +10001528static long
Dave Chinner8daaa832011-07-08 14:14:46 +10001529xfs_fs_nr_cached_objects(
Dave Chinner9b17c622013-08-28 10:18:05 +10001530 struct super_block *sb,
1531 int nid)
Dave Chinner8daaa832011-07-08 14:14:46 +10001532{
1533 return xfs_reclaim_inodes_count(XFS_M(sb));
1534}
1535
Dave Chinner0a234c62013-08-28 10:17:57 +10001536static long
Dave Chinner8daaa832011-07-08 14:14:46 +10001537xfs_fs_free_cached_objects(
1538 struct super_block *sb,
Dave Chinner9b17c622013-08-28 10:18:05 +10001539 long nr_to_scan,
1540 int nid)
Dave Chinner8daaa832011-07-08 14:14:46 +10001541{
Dave Chinner0a234c62013-08-28 10:17:57 +10001542 return xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan);
Dave Chinner8daaa832011-07-08 14:14:46 +10001543}
1544
Alexey Dobriyanb87221d2009-09-21 17:01:09 -07001545static const struct super_operations xfs_super_operations = {
Nathan Scotta50cd262006-03-14 14:06:18 +11001546 .alloc_inode = xfs_fs_alloc_inode,
1547 .destroy_inode = xfs_fs_destroy_inode,
Al Virob57922d2010-06-07 14:34:48 -04001548 .evict_inode = xfs_fs_evict_inode,
Dave Chinner5132ba82012-03-22 05:15:10 +00001549 .drop_inode = xfs_fs_drop_inode,
Nathan Scotta50cd262006-03-14 14:06:18 +11001550 .put_super = xfs_fs_put_super,
Christoph Hellwig69961a22009-10-06 20:29:28 +00001551 .sync_fs = xfs_fs_sync_fs,
Takashi Satoc4be0c12009-01-09 16:40:58 -08001552 .freeze_fs = xfs_fs_freeze,
Eric Sandeend5db0f92010-02-05 22:59:53 +00001553 .unfreeze_fs = xfs_fs_unfreeze,
Nathan Scotta50cd262006-03-14 14:06:18 +11001554 .statfs = xfs_fs_statfs,
1555 .remount_fs = xfs_fs_remount,
1556 .show_options = xfs_fs_show_options,
Dave Chinner8daaa832011-07-08 14:14:46 +10001557 .nr_cached_objects = xfs_fs_nr_cached_objects,
1558 .free_cached_objects = xfs_fs_free_cached_objects,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001559};
1560
Andrew Morton5085b602007-02-20 13:57:47 -08001561static struct file_system_type xfs_fs_type = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001562 .owner = THIS_MODULE,
1563 .name = "xfs",
Al Viro152a0832010-07-25 00:46:55 +04001564 .mount = xfs_fs_mount,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565 .kill_sb = kill_block_super,
1566 .fs_flags = FS_REQUIRES_DEV,
1567};
Eric W. Biederman7f78e032013-03-02 19:39:14 -08001568MODULE_ALIAS_FS("xfs");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001569
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001570STATIC int __init
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001571xfs_init_zones(void)
1572{
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001573
1574 xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend");
1575 if (!xfs_ioend_zone)
David Chinnerbf904242008-10-30 17:36:14 +11001576 goto out;
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001577
1578 xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE,
1579 xfs_ioend_zone);
1580 if (!xfs_ioend_pool)
1581 goto out_destroy_ioend_zone;
1582
1583 xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t),
1584 "xfs_log_ticket");
1585 if (!xfs_log_ticket_zone)
1586 goto out_destroy_ioend_pool;
1587
1588 xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
1589 "xfs_bmap_free_item");
1590 if (!xfs_bmap_free_item_zone)
1591 goto out_destroy_log_ticket_zone;
David Chinnerbf904242008-10-30 17:36:14 +11001592
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001593 xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
1594 "xfs_btree_cur");
1595 if (!xfs_btree_cur_zone)
1596 goto out_destroy_bmap_free_item_zone;
1597
1598 xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t),
1599 "xfs_da_state");
1600 if (!xfs_da_state_zone)
1601 goto out_destroy_btree_cur_zone;
1602
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001603 xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
1604 if (!xfs_ifork_zone)
Dave Chinner1d9025e2012-06-22 18:50:14 +10001605 goto out_destroy_da_state_zone;
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001606
1607 xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
1608 if (!xfs_trans_zone)
1609 goto out_destroy_ifork_zone;
1610
Christoph Hellwige98c4142010-06-23 18:11:15 +10001611 xfs_log_item_desc_zone =
1612 kmem_zone_init(sizeof(struct xfs_log_item_desc),
1613 "xfs_log_item_desc");
1614 if (!xfs_log_item_desc_zone)
1615 goto out_destroy_trans_zone;
1616
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001617 /*
1618 * The size of the zone allocated buf log item is the maximum
1619 * size possible under XFS. This wastes a little bit of memory,
1620 * but it is much faster.
1621 */
Dave Chinner77c1a082012-06-22 18:50:07 +10001622 xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item),
1623 "xfs_buf_item");
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001624 if (!xfs_buf_item_zone)
Christoph Hellwige98c4142010-06-23 18:11:15 +10001625 goto out_destroy_log_item_desc_zone;
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001626
1627 xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) +
1628 ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
1629 sizeof(xfs_extent_t))), "xfs_efd_item");
1630 if (!xfs_efd_zone)
1631 goto out_destroy_buf_item_zone;
1632
1633 xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) +
1634 ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
1635 sizeof(xfs_extent_t))), "xfs_efi_item");
1636 if (!xfs_efi_zone)
1637 goto out_destroy_efd_zone;
1638
1639 xfs_inode_zone =
1640 kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
David Chinnerbf904242008-10-30 17:36:14 +11001641 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD,
1642 xfs_fs_inode_init_once);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001643 if (!xfs_inode_zone)
1644 goto out_destroy_efi_zone;
1645
1646 xfs_ili_zone =
1647 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
1648 KM_ZONE_SPREAD, NULL);
1649 if (!xfs_ili_zone)
1650 goto out_destroy_inode_zone;
Dave Chinner3ebe7d22013-06-27 16:04:53 +10001651 xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item),
1652 "xfs_icr");
1653 if (!xfs_icreate_zone)
1654 goto out_destroy_ili_zone;
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001655
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001656 return 0;
1657
Dave Chinner3ebe7d22013-06-27 16:04:53 +10001658 out_destroy_ili_zone:
1659 kmem_zone_destroy(xfs_ili_zone);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001660 out_destroy_inode_zone:
1661 kmem_zone_destroy(xfs_inode_zone);
1662 out_destroy_efi_zone:
1663 kmem_zone_destroy(xfs_efi_zone);
1664 out_destroy_efd_zone:
1665 kmem_zone_destroy(xfs_efd_zone);
1666 out_destroy_buf_item_zone:
1667 kmem_zone_destroy(xfs_buf_item_zone);
Christoph Hellwige98c4142010-06-23 18:11:15 +10001668 out_destroy_log_item_desc_zone:
1669 kmem_zone_destroy(xfs_log_item_desc_zone);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001670 out_destroy_trans_zone:
1671 kmem_zone_destroy(xfs_trans_zone);
1672 out_destroy_ifork_zone:
1673 kmem_zone_destroy(xfs_ifork_zone);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001674 out_destroy_da_state_zone:
1675 kmem_zone_destroy(xfs_da_state_zone);
1676 out_destroy_btree_cur_zone:
1677 kmem_zone_destroy(xfs_btree_cur_zone);
1678 out_destroy_bmap_free_item_zone:
1679 kmem_zone_destroy(xfs_bmap_free_item_zone);
1680 out_destroy_log_ticket_zone:
1681 kmem_zone_destroy(xfs_log_ticket_zone);
1682 out_destroy_ioend_pool:
1683 mempool_destroy(xfs_ioend_pool);
1684 out_destroy_ioend_zone:
1685 kmem_zone_destroy(xfs_ioend_zone);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001686 out:
1687 return -ENOMEM;
1688}
1689
1690STATIC void
1691xfs_destroy_zones(void)
1692{
Kirill A. Shutemov8c0a8532012-09-26 11:33:07 +10001693 /*
1694 * Make sure all delayed rcu free are flushed before we
1695 * destroy caches.
1696 */
1697 rcu_barrier();
Dave Chinner3ebe7d22013-06-27 16:04:53 +10001698 kmem_zone_destroy(xfs_icreate_zone);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001699 kmem_zone_destroy(xfs_ili_zone);
1700 kmem_zone_destroy(xfs_inode_zone);
1701 kmem_zone_destroy(xfs_efi_zone);
1702 kmem_zone_destroy(xfs_efd_zone);
1703 kmem_zone_destroy(xfs_buf_item_zone);
Christoph Hellwige98c4142010-06-23 18:11:15 +10001704 kmem_zone_destroy(xfs_log_item_desc_zone);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001705 kmem_zone_destroy(xfs_trans_zone);
1706 kmem_zone_destroy(xfs_ifork_zone);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001707 kmem_zone_destroy(xfs_da_state_zone);
1708 kmem_zone_destroy(xfs_btree_cur_zone);
1709 kmem_zone_destroy(xfs_bmap_free_item_zone);
1710 kmem_zone_destroy(xfs_log_ticket_zone);
1711 mempool_destroy(xfs_ioend_pool);
1712 kmem_zone_destroy(xfs_ioend_zone);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001713
1714}
1715
1716STATIC int __init
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001717xfs_init_workqueues(void)
1718{
1719 /*
Dave Chinnerc999a222012-03-22 05:15:07 +00001720 * The allocation workqueue can be used in memory reclaim situations
1721 * (writepage path), and parallelism is only limited by the number of
1722 * AGs in all the filesystems mounted. Hence use the default large
1723 * max_active value for this workqueue.
1724 */
1725 xfs_alloc_wq = alloc_workqueue("xfsalloc", WQ_MEM_RECLAIM, 0);
1726 if (!xfs_alloc_wq)
Dave Chinner58896082012-10-08 21:56:05 +11001727 return -ENOMEM;
Dave Chinnerc999a222012-03-22 05:15:07 +00001728
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001729 return 0;
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001730}
1731
Luck, Tony39411f82011-04-11 12:06:12 -07001732STATIC void
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001733xfs_destroy_workqueues(void)
1734{
Dave Chinnerc999a222012-03-22 05:15:07 +00001735 destroy_workqueue(xfs_alloc_wq);
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001736}
1737
1738STATIC int __init
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001739init_xfs_fs(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001740{
1741 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001742
Christoph Hellwig65795912008-11-28 14:23:33 +11001743 printk(KERN_INFO XFS_VERSION_STRING " with "
1744 XFS_BUILD_OPTIONS " enabled\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001746 xfs_dir_startup();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747
Nathan Scott87582802006-03-14 13:18:19 +11001748 error = xfs_init_zones();
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001749 if (error)
1750 goto out;
1751
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001752 error = xfs_init_workqueues();
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001753 if (error)
Christoph Hellwig0b1b2132009-12-14 23:14:59 +00001754 goto out_destroy_zones;
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001755
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001756 error = xfs_mru_cache_init();
1757 if (error)
1758 goto out_destroy_wq;
1759
Nathan Scottce8e9222006-01-11 15:39:08 +11001760 error = xfs_buf_init();
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001761 if (error)
Christoph Hellwig1919add2014-04-23 07:11:51 +10001762 goto out_mru_cache_uninit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001763
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001764 error = xfs_init_procfs();
1765 if (error)
1766 goto out_buf_terminate;
1767
1768 error = xfs_sysctl_register();
1769 if (error)
1770 goto out_cleanup_procfs;
1771
Christoph Hellwiga05931c2012-03-13 08:52:37 +00001772 error = xfs_qm_init();
1773 if (error)
1774 goto out_sysctl_unregister;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001775
1776 error = register_filesystem(&xfs_fs_type);
1777 if (error)
Christoph Hellwiga05931c2012-03-13 08:52:37 +00001778 goto out_qm_exit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001779 return 0;
1780
Christoph Hellwiga05931c2012-03-13 08:52:37 +00001781 out_qm_exit:
1782 xfs_qm_exit();
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001783 out_sysctl_unregister:
1784 xfs_sysctl_unregister();
1785 out_cleanup_procfs:
1786 xfs_cleanup_procfs();
1787 out_buf_terminate:
Nathan Scottce8e9222006-01-11 15:39:08 +11001788 xfs_buf_terminate();
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001789 out_mru_cache_uninit:
1790 xfs_mru_cache_uninit();
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001791 out_destroy_wq:
1792 xfs_destroy_workqueues();
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001793 out_destroy_zones:
Nathan Scott87582802006-03-14 13:18:19 +11001794 xfs_destroy_zones();
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001795 out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001796 return error;
1797}
1798
1799STATIC void __exit
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001800exit_xfs_fs(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801{
Christoph Hellwiga05931c2012-03-13 08:52:37 +00001802 xfs_qm_exit();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803 unregister_filesystem(&xfs_fs_type);
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001804 xfs_sysctl_unregister();
1805 xfs_cleanup_procfs();
Nathan Scottce8e9222006-01-11 15:39:08 +11001806 xfs_buf_terminate();
Christoph Hellwig9f8868f2008-07-18 17:11:46 +10001807 xfs_mru_cache_uninit();
Dave Chinner0bf6a5b2011-04-08 12:45:07 +10001808 xfs_destroy_workqueues();
Nathan Scott87582802006-03-14 13:18:19 +11001809 xfs_destroy_zones();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001810}
1811
1812module_init(init_xfs_fs);
1813module_exit(exit_xfs_fs);
1814
1815MODULE_AUTHOR("Silicon Graphics, Inc.");
1816MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
1817MODULE_LICENSE("GPL");