Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | a805bad | 2006-06-19 08:40:27 +1000 | [diff] [blame] | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include "xfs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 20 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include "xfs_log.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 22 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include "xfs_trans.h" |
| 24 | #include "xfs_sb.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 25 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_dir2.h" |
| 27 | #include "xfs_alloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include "xfs_quota.h" |
| 29 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include "xfs_bmap_btree.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 31 | #include "xfs_alloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "xfs_ialloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include "xfs_dinode.h" |
| 34 | #include "xfs_inode.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 35 | #include "xfs_btree.h" |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 36 | #include "xfs_btree_trace.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 37 | #include "xfs_ialloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_bmap.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include "xfs_rtalloc.h" |
| 40 | #include "xfs_error.h" |
| 41 | #include "xfs_itable.h" |
Christoph Hellwig | 9909c4a | 2007-10-11 18:11:14 +1000 | [diff] [blame] | 42 | #include "xfs_fsops.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include "xfs_attr.h" |
| 44 | #include "xfs_buf_item.h" |
| 45 | #include "xfs_utils.h" |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 46 | #include "xfs_vnodeops.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include "xfs_version.h" |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 48 | #include "xfs_log_priv.h" |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 49 | #include "xfs_trans_priv.h" |
Christoph Hellwig | 48b62a1 | 2008-05-20 11:30:39 +1000 | [diff] [blame] | 50 | #include "xfs_filestream.h" |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 51 | #include "xfs_da_btree.h" |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 52 | #include "xfs_extfree_item.h" |
| 53 | #include "xfs_mru_cache.h" |
| 54 | #include "xfs_inode_item.h" |
David Chinner | fe4fa4b | 2008-10-30 17:06:08 +1100 | [diff] [blame] | 55 | #include "xfs_sync.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 56 | #include "xfs_trace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | #include <linux/namei.h> |
| 59 | #include <linux/init.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 60 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <linux/mount.h> |
Christoph Hellwig | 0829c36 | 2005-09-02 16:58:49 +1000 | [diff] [blame] | 62 | #include <linux/mempool.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #include <linux/writeback.h> |
Christoph Hellwig | 4df08c5 | 2005-09-05 08:34:18 +1000 | [diff] [blame] | 64 | #include <linux/kthread.h> |
Nigel Cunningham | 7dfb710 | 2006-12-06 20:34:23 -0800 | [diff] [blame] | 65 | #include <linux/freezer.h> |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 66 | #include <linux/parser.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
Alexey Dobriyan | b87221d | 2009-09-21 17:01:09 -0700 | [diff] [blame] | 68 | static const struct super_operations xfs_super_operations; |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 69 | static kmem_zone_t *xfs_ioend_zone; |
Christoph Hellwig | 0829c36 | 2005-09-02 16:58:49 +1000 | [diff] [blame] | 70 | mempool_t *xfs_ioend_pool; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 72 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
| 73 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ |
| 74 | #define MNTOPT_LOGDEV "logdev" /* log device */ |
| 75 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ |
| 76 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ |
| 77 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 78 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
| 79 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ |
| 80 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ |
| 81 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ |
| 82 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ |
| 83 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ |
| 84 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ |
| 85 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ |
| 86 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ |
| 87 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ |
| 88 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ |
| 89 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ |
| 90 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and |
| 91 | * unwritten extent conversion */ |
| 92 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ |
| 93 | #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ |
| 94 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
| 95 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ |
| 96 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ |
| 97 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ |
| 98 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes |
| 99 | * in stat(). */ |
| 100 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ |
| 101 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ |
| 102 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ |
| 103 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ |
| 104 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ |
| 105 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ |
| 106 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ |
| 107 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ |
| 108 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ |
| 109 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ |
| 110 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ |
| 111 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ |
| 112 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ |
| 113 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ |
| 114 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ |
Dave Chinner | 71e330b | 2010-05-21 14:37:18 +1000 | [diff] [blame] | 115 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed loging enabled */ |
| 116 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed loging disabled */ |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 117 | |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 118 | /* |
| 119 | * Table driven mount option parser. |
| 120 | * |
| 121 | * Currently only used for remount, but it will be used for mount |
| 122 | * in the future, too. |
| 123 | */ |
| 124 | enum { |
| 125 | Opt_barrier, Opt_nobarrier, Opt_err |
| 126 | }; |
| 127 | |
Steven Whitehouse | a447c09 | 2008-10-13 10:46:57 +0100 | [diff] [blame] | 128 | static const match_table_t tokens = { |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 129 | {Opt_barrier, "barrier"}, |
| 130 | {Opt_nobarrier, "nobarrier"}, |
| 131 | {Opt_err, NULL} |
| 132 | }; |
| 133 | |
| 134 | |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 135 | STATIC unsigned long |
| 136 | suffix_strtoul(char *s, char **endp, unsigned int base) |
| 137 | { |
| 138 | int last, shift_left_factor = 0; |
| 139 | char *value = s; |
| 140 | |
| 141 | last = strlen(value) - 1; |
| 142 | if (value[last] == 'K' || value[last] == 'k') { |
| 143 | shift_left_factor = 10; |
| 144 | value[last] = '\0'; |
| 145 | } |
| 146 | if (value[last] == 'M' || value[last] == 'm') { |
| 147 | shift_left_factor = 20; |
| 148 | value[last] = '\0'; |
| 149 | } |
| 150 | if (value[last] == 'G' || value[last] == 'g') { |
| 151 | shift_left_factor = 30; |
| 152 | value[last] = '\0'; |
| 153 | } |
| 154 | |
| 155 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; |
| 156 | } |
| 157 | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 158 | /* |
| 159 | * This function fills in xfs_mount_t fields based on mount args. |
| 160 | * Note: the superblock has _not_ yet been read in. |
| 161 | * |
| 162 | * Note that this function leaks the various device name allocations on |
| 163 | * failure. The caller takes care of them. |
| 164 | */ |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 165 | STATIC int |
| 166 | xfs_parseargs( |
| 167 | struct xfs_mount *mp, |
Christoph Hellwig | 288699f | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 168 | char *options) |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 169 | { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 170 | struct super_block *sb = mp->m_super; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 171 | char *this_char, *value, *eov; |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 172 | int dsunit = 0; |
| 173 | int dswidth = 0; |
| 174 | int iosize = 0; |
Christoph Hellwig | a568778 | 2009-02-09 08:37:39 +0100 | [diff] [blame] | 175 | __uint8_t iosizelog = 0; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 176 | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 177 | /* |
| 178 | * Copy binary VFS mount flags we are interested in. |
| 179 | */ |
| 180 | if (sb->s_flags & MS_RDONLY) |
| 181 | mp->m_flags |= XFS_MOUNT_RDONLY; |
| 182 | if (sb->s_flags & MS_DIRSYNC) |
| 183 | mp->m_flags |= XFS_MOUNT_DIRSYNC; |
| 184 | if (sb->s_flags & MS_SYNCHRONOUS) |
| 185 | mp->m_flags |= XFS_MOUNT_WSYNC; |
| 186 | |
| 187 | /* |
| 188 | * Set some default flags that could be cleared by the mount option |
| 189 | * parsing. |
| 190 | */ |
| 191 | mp->m_flags |= XFS_MOUNT_BARRIER; |
| 192 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
| 193 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
| 194 | |
| 195 | /* |
| 196 | * These can be overridden by the mount option parsing. |
| 197 | */ |
| 198 | mp->m_logbufs = -1; |
| 199 | mp->m_logbsize = -1; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 200 | |
| 201 | if (!options) |
| 202 | goto done; |
| 203 | |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 204 | while ((this_char = strsep(&options, ",")) != NULL) { |
| 205 | if (!*this_char) |
| 206 | continue; |
| 207 | if ((value = strchr(this_char, '=')) != NULL) |
| 208 | *value++ = 0; |
| 209 | |
| 210 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { |
| 211 | if (!value || !*value) { |
| 212 | cmn_err(CE_WARN, |
| 213 | "XFS: %s option requires an argument", |
| 214 | this_char); |
| 215 | return EINVAL; |
| 216 | } |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 217 | mp->m_logbufs = simple_strtoul(value, &eov, 10); |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 218 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
| 219 | if (!value || !*value) { |
| 220 | cmn_err(CE_WARN, |
| 221 | "XFS: %s option requires an argument", |
| 222 | this_char); |
| 223 | return EINVAL; |
| 224 | } |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 225 | mp->m_logbsize = suffix_strtoul(value, &eov, 10); |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 226 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
| 227 | if (!value || !*value) { |
| 228 | cmn_err(CE_WARN, |
| 229 | "XFS: %s option requires an argument", |
| 230 | this_char); |
| 231 | return EINVAL; |
| 232 | } |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 233 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
| 234 | if (!mp->m_logname) |
| 235 | return ENOMEM; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 236 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
Christoph Hellwig | 288699f | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 237 | cmn_err(CE_WARN, |
| 238 | "XFS: %s option not allowed on this system", |
| 239 | this_char); |
| 240 | return EINVAL; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 241 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
| 242 | if (!value || !*value) { |
| 243 | cmn_err(CE_WARN, |
| 244 | "XFS: %s option requires an argument", |
| 245 | this_char); |
| 246 | return EINVAL; |
| 247 | } |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 248 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
| 249 | if (!mp->m_rtname) |
| 250 | return ENOMEM; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 251 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
| 252 | if (!value || !*value) { |
| 253 | cmn_err(CE_WARN, |
| 254 | "XFS: %s option requires an argument", |
| 255 | this_char); |
| 256 | return EINVAL; |
| 257 | } |
| 258 | iosize = simple_strtoul(value, &eov, 10); |
Christoph Hellwig | 1ec7944 | 2008-10-30 17:55:08 +1100 | [diff] [blame] | 259 | iosizelog = ffs(iosize) - 1; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 260 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
| 261 | if (!value || !*value) { |
| 262 | cmn_err(CE_WARN, |
| 263 | "XFS: %s option requires an argument", |
| 264 | this_char); |
| 265 | return EINVAL; |
| 266 | } |
| 267 | iosize = suffix_strtoul(value, &eov, 10); |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 268 | iosizelog = ffs(iosize) - 1; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 269 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
| 270 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { |
| 271 | mp->m_flags |= XFS_MOUNT_GRPID; |
| 272 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || |
| 273 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { |
| 274 | mp->m_flags &= ~XFS_MOUNT_GRPID; |
| 275 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 276 | mp->m_flags |= XFS_MOUNT_WSYNC; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 277 | } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 278 | mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 279 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 280 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 281 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 282 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 283 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 284 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 285 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
| 286 | if (!value || !*value) { |
| 287 | cmn_err(CE_WARN, |
| 288 | "XFS: %s option requires an argument", |
| 289 | this_char); |
| 290 | return EINVAL; |
| 291 | } |
| 292 | dsunit = simple_strtoul(value, &eov, 10); |
| 293 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { |
| 294 | if (!value || !*value) { |
| 295 | cmn_err(CE_WARN, |
| 296 | "XFS: %s option requires an argument", |
| 297 | this_char); |
| 298 | return EINVAL; |
| 299 | } |
| 300 | dswidth = simple_strtoul(value, &eov, 10); |
| 301 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 302 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 303 | #if !XFS_BIG_INUMS |
| 304 | cmn_err(CE_WARN, |
| 305 | "XFS: %s option not allowed on this system", |
| 306 | this_char); |
| 307 | return EINVAL; |
| 308 | #endif |
| 309 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 310 | mp->m_flags |= XFS_MOUNT_NOUUID; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 311 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 312 | mp->m_flags |= XFS_MOUNT_BARRIER; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 313 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 314 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 315 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 316 | mp->m_flags |= XFS_MOUNT_IKEEP; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 317 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 318 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 319 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 320 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 321 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 322 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 323 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 324 | mp->m_flags |= XFS_MOUNT_ATTR2; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 325 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 326 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
| 327 | mp->m_flags |= XFS_MOUNT_NOATTR2; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 328 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 329 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 330 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 331 | mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
| 332 | XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
Christoph Hellwig | 469fc23 | 2008-10-30 17:54:57 +1100 | [diff] [blame] | 333 | XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 334 | XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 335 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
| 336 | !strcmp(this_char, MNTOPT_UQUOTA) || |
| 337 | !strcmp(this_char, MNTOPT_USRQUOTA)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 338 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
| 339 | XFS_UQUOTA_ENFD); |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 340 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
| 341 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 342 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
| 343 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 344 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
| 345 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 346 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
| 347 | XFS_OQUOTA_ENFD); |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 348 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 349 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
| 350 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 351 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
| 352 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 353 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
| 354 | XFS_OQUOTA_ENFD); |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 355 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 356 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
| 357 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; |
Dave Chinner | 71e330b | 2010-05-21 14:37:18 +1000 | [diff] [blame] | 358 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
| 359 | mp->m_flags |= XFS_MOUNT_DELAYLOG; |
| 360 | cmn_err(CE_WARN, |
| 361 | "Enabling EXPERIMENTAL delayed logging feature " |
| 362 | "- use at your own risk.\n"); |
| 363 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
| 364 | mp->m_flags &= ~XFS_MOUNT_DELAYLOG; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 365 | } else if (!strcmp(this_char, "ihashsize")) { |
| 366 | cmn_err(CE_WARN, |
| 367 | "XFS: ihashsize no longer used, option is deprecated."); |
| 368 | } else if (!strcmp(this_char, "osyncisdsync")) { |
| 369 | /* no-op, this is now the default */ |
| 370 | cmn_err(CE_WARN, |
| 371 | "XFS: osyncisdsync is now the default, option is deprecated."); |
| 372 | } else if (!strcmp(this_char, "irixsgid")) { |
| 373 | cmn_err(CE_WARN, |
| 374 | "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); |
| 375 | } else { |
| 376 | cmn_err(CE_WARN, |
| 377 | "XFS: unknown mount option [%s].", this_char); |
| 378 | return EINVAL; |
| 379 | } |
| 380 | } |
| 381 | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 382 | /* |
| 383 | * no recovery flag requires a read-only mount |
| 384 | */ |
| 385 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && |
| 386 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { |
| 387 | cmn_err(CE_WARN, "XFS: no-recovery mounts must be read-only."); |
| 388 | return EINVAL; |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 389 | } |
| 390 | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 391 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 392 | cmn_err(CE_WARN, |
| 393 | "XFS: sunit and swidth options incompatible with the noalign option"); |
| 394 | return EINVAL; |
| 395 | } |
| 396 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 397 | #ifndef CONFIG_XFS_QUOTA |
| 398 | if (XFS_IS_QUOTA_RUNNING(mp)) { |
| 399 | cmn_err(CE_WARN, |
| 400 | "XFS: quota support not available in this kernel."); |
| 401 | return EINVAL; |
| 402 | } |
| 403 | #endif |
| 404 | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 405 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
| 406 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 407 | cmn_err(CE_WARN, |
| 408 | "XFS: cannot mount with both project and group quota"); |
| 409 | return EINVAL; |
| 410 | } |
| 411 | |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 412 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
| 413 | cmn_err(CE_WARN, |
| 414 | "XFS: sunit and swidth must be specified together"); |
| 415 | return EINVAL; |
| 416 | } |
| 417 | |
| 418 | if (dsunit && (dswidth % dsunit != 0)) { |
| 419 | cmn_err(CE_WARN, |
| 420 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", |
| 421 | dswidth, dsunit); |
| 422 | return EINVAL; |
| 423 | } |
| 424 | |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 425 | done: |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 426 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { |
| 427 | /* |
| 428 | * At this point the superblock has not been read |
| 429 | * in, therefore we do not know the block size. |
| 430 | * Before the mount call ends we will convert |
| 431 | * these to FSBs. |
| 432 | */ |
| 433 | if (dsunit) { |
| 434 | mp->m_dalign = dsunit; |
| 435 | mp->m_flags |= XFS_MOUNT_RETERR; |
| 436 | } |
| 437 | |
| 438 | if (dswidth) |
| 439 | mp->m_swidth = dswidth; |
| 440 | } |
| 441 | |
| 442 | if (mp->m_logbufs != -1 && |
| 443 | mp->m_logbufs != 0 && |
| 444 | (mp->m_logbufs < XLOG_MIN_ICLOGS || |
| 445 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { |
| 446 | cmn_err(CE_WARN, |
| 447 | "XFS: invalid logbufs value: %d [not %d-%d]", |
| 448 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
| 449 | return XFS_ERROR(EINVAL); |
| 450 | } |
| 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))) { |
| 456 | cmn_err(CE_WARN, |
| 457 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", |
| 458 | mp->m_logbsize); |
| 459 | return XFS_ERROR(EINVAL); |
| 460 | } |
| 461 | |
| 462 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); |
| 463 | if (!mp->m_fsname) |
| 464 | return ENOMEM; |
| 465 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; |
| 466 | |
| 467 | if (iosizelog) { |
| 468 | if (iosizelog > XFS_MAX_IO_LOG || |
| 469 | iosizelog < XFS_MIN_IO_LOG) { |
| 470 | cmn_err(CE_WARN, |
| 471 | "XFS: invalid log iosize: %d [not %d-%d]", |
| 472 | iosizelog, XFS_MIN_IO_LOG, |
| 473 | XFS_MAX_IO_LOG); |
| 474 | return XFS_ERROR(EINVAL); |
| 475 | } |
| 476 | |
| 477 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; |
| 478 | mp->m_readio_log = iosizelog; |
| 479 | mp->m_writeio_log = iosizelog; |
| 480 | } |
| 481 | |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 482 | return 0; |
| 483 | } |
| 484 | |
| 485 | struct proc_xfs_info { |
| 486 | int flag; |
| 487 | char *str; |
| 488 | }; |
| 489 | |
| 490 | STATIC int |
| 491 | xfs_showargs( |
| 492 | struct xfs_mount *mp, |
| 493 | struct seq_file *m) |
| 494 | { |
| 495 | static struct proc_xfs_info xfs_info_set[] = { |
| 496 | /* the few simple ones we can get from the mount struct */ |
Josef Jeff Sipek | 1bd960e | 2008-02-29 13:58:40 +1100 | [diff] [blame] | 497 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 498 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 499 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
| 500 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, |
| 501 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, |
| 502 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, |
| 503 | { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, |
| 504 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
| 505 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 506 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
Dave Chinner | 71e330b | 2010-05-21 14:37:18 +1000 | [diff] [blame] | 507 | { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 508 | { 0, NULL } |
| 509 | }; |
| 510 | static struct proc_xfs_info xfs_info_unset[] = { |
| 511 | /* the few simple ones we can get from the mount struct */ |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 512 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
| 513 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, |
| 514 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, |
| 515 | { 0, NULL } |
| 516 | }; |
| 517 | struct proc_xfs_info *xfs_infop; |
| 518 | |
| 519 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { |
| 520 | if (mp->m_flags & xfs_infop->flag) |
| 521 | seq_puts(m, xfs_infop->str); |
| 522 | } |
| 523 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { |
| 524 | if (!(mp->m_flags & xfs_infop->flag)) |
| 525 | seq_puts(m, xfs_infop->str); |
| 526 | } |
| 527 | |
| 528 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) |
| 529 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", |
| 530 | (int)(1 << mp->m_writeio_log) >> 10); |
| 531 | |
| 532 | if (mp->m_logbufs > 0) |
| 533 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); |
| 534 | if (mp->m_logbsize > 0) |
| 535 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); |
| 536 | |
| 537 | if (mp->m_logname) |
| 538 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); |
| 539 | if (mp->m_rtname) |
| 540 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); |
| 541 | |
| 542 | if (mp->m_dalign > 0) |
| 543 | seq_printf(m, "," MNTOPT_SUNIT "=%d", |
| 544 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); |
| 545 | if (mp->m_swidth > 0) |
| 546 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", |
| 547 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); |
| 548 | |
| 549 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) |
| 550 | seq_puts(m, "," MNTOPT_USRQUOTA); |
| 551 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) |
| 552 | seq_puts(m, "," MNTOPT_UQUOTANOENF); |
| 553 | |
Alex Elder | 988abe4 | 2009-09-02 17:02:24 -0500 | [diff] [blame] | 554 | /* Either project or group quotas can be active, not both */ |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 555 | |
Alex Elder | 988abe4 | 2009-09-02 17:02:24 -0500 | [diff] [blame] | 556 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
| 557 | if (mp->m_qflags & XFS_OQUOTA_ENFD) |
| 558 | seq_puts(m, "," MNTOPT_PRJQUOTA); |
| 559 | else |
| 560 | seq_puts(m, "," MNTOPT_PQUOTANOENF); |
| 561 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { |
| 562 | if (mp->m_qflags & XFS_OQUOTA_ENFD) |
| 563 | seq_puts(m, "," MNTOPT_GRPQUOTA); |
| 564 | else |
| 565 | seq_puts(m, "," MNTOPT_GQUOTANOENF); |
| 566 | } |
David Chinner | a67d7c5 | 2007-11-23 16:29:32 +1100 | [diff] [blame] | 567 | |
| 568 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) |
| 569 | seq_puts(m, "," MNTOPT_NOQUOTA); |
| 570 | |
| 571 | return 0; |
| 572 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | __uint64_t |
| 574 | xfs_max_file_offset( |
| 575 | unsigned int blockshift) |
| 576 | { |
| 577 | unsigned int pagefactor = 1; |
| 578 | unsigned int bitshift = BITS_PER_LONG - 1; |
| 579 | |
| 580 | /* Figure out maximum filesize, on Linux this can depend on |
| 581 | * the filesystem blocksize (on 32 bit platforms). |
| 582 | * __block_prepare_write does this in an [unsigned] long... |
| 583 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
| 584 | * So, for page sized blocks (4K on 32 bit platforms), |
| 585 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is |
| 586 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) |
| 587 | * but for smaller blocksizes it is less (bbits = log2 bsize). |
| 588 | * Note1: get_block_t takes a long (implicit cast from above) |
| 589 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch |
| 590 | * can optionally convert the [unsigned] long from above into |
| 591 | * an [unsigned] long long. |
| 592 | */ |
| 593 | |
| 594 | #if BITS_PER_LONG == 32 |
Bartlomiej Zolnierkiewicz | 90c699a | 2009-06-19 08:08:50 +0200 | [diff] [blame] | 595 | # if defined(CONFIG_LBDAF) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | ASSERT(sizeof(sector_t) == 8); |
| 597 | pagefactor = PAGE_CACHE_SIZE; |
| 598 | bitshift = BITS_PER_LONG; |
| 599 | # else |
| 600 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); |
| 601 | # endif |
| 602 | #endif |
| 603 | |
| 604 | return (((__uint64_t)pagefactor) << bitshift) - 1; |
| 605 | } |
| 606 | |
Hannes Eder | 3180e66 | 2009-03-04 19:34:10 +0100 | [diff] [blame] | 607 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | xfs_blkdev_get( |
| 609 | xfs_mount_t *mp, |
| 610 | const char *name, |
| 611 | struct block_device **bdevp) |
| 612 | { |
| 613 | int error = 0; |
| 614 | |
Al Viro | 30c40d2 | 2008-02-22 19:50:45 -0500 | [diff] [blame] | 615 | *bdevp = open_bdev_exclusive(name, FMODE_READ|FMODE_WRITE, mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | if (IS_ERR(*bdevp)) { |
| 617 | error = PTR_ERR(*bdevp); |
| 618 | printk("XFS: Invalid device [%s], error=%d\n", name, error); |
| 619 | } |
| 620 | |
| 621 | return -error; |
| 622 | } |
| 623 | |
Hannes Eder | 3180e66 | 2009-03-04 19:34:10 +0100 | [diff] [blame] | 624 | STATIC void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | xfs_blkdev_put( |
| 626 | struct block_device *bdev) |
| 627 | { |
| 628 | if (bdev) |
Al Viro | 30c40d2 | 2008-02-22 19:50:45 -0500 | [diff] [blame] | 629 | close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | } |
| 631 | |
Christoph Hellwig | f538d4d | 2005-11-02 10:26:59 +1100 | [diff] [blame] | 632 | /* |
| 633 | * Try to write out the superblock using barriers. |
| 634 | */ |
| 635 | STATIC int |
| 636 | xfs_barrier_test( |
| 637 | xfs_mount_t *mp) |
| 638 | { |
| 639 | xfs_buf_t *sbp = xfs_getsb(mp, 0); |
| 640 | int error; |
| 641 | |
| 642 | XFS_BUF_UNDONE(sbp); |
| 643 | XFS_BUF_UNREAD(sbp); |
| 644 | XFS_BUF_UNDELAYWRITE(sbp); |
| 645 | XFS_BUF_WRITE(sbp); |
| 646 | XFS_BUF_UNASYNC(sbp); |
| 647 | XFS_BUF_ORDERED(sbp); |
| 648 | |
| 649 | xfsbdstrat(mp, sbp); |
| 650 | error = xfs_iowait(sbp); |
| 651 | |
| 652 | /* |
| 653 | * Clear all the flags we set and possible error state in the |
| 654 | * buffer. We only did the write to try out whether barriers |
| 655 | * worked and shouldn't leave any traces in the superblock |
| 656 | * buffer. |
| 657 | */ |
| 658 | XFS_BUF_DONE(sbp); |
| 659 | XFS_BUF_ERROR(sbp, 0); |
| 660 | XFS_BUF_UNORDERED(sbp); |
| 661 | |
| 662 | xfs_buf_relse(sbp); |
| 663 | return error; |
| 664 | } |
| 665 | |
Eric Sandeen | d96f8f8 | 2009-07-02 00:09:33 -0500 | [diff] [blame] | 666 | STATIC void |
Christoph Hellwig | f538d4d | 2005-11-02 10:26:59 +1100 | [diff] [blame] | 667 | xfs_mountfs_check_barriers(xfs_mount_t *mp) |
| 668 | { |
| 669 | int error; |
| 670 | |
| 671 | if (mp->m_logdev_targp != mp->m_ddev_targp) { |
| 672 | xfs_fs_cmn_err(CE_NOTE, mp, |
| 673 | "Disabling barriers, not supported with external log device"); |
| 674 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
Christoph Hellwig | 4ef19dd | 2006-01-11 15:27:18 +1100 | [diff] [blame] | 675 | return; |
Christoph Hellwig | f538d4d | 2005-11-02 10:26:59 +1100 | [diff] [blame] | 676 | } |
| 677 | |
Nathan Scott | b2ea401 | 2006-07-28 17:05:13 +1000 | [diff] [blame] | 678 | if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
| 679 | xfs_fs_cmn_err(CE_NOTE, mp, |
| 680 | "Disabling barriers, underlying device is readonly"); |
| 681 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
| 682 | return; |
| 683 | } |
| 684 | |
Christoph Hellwig | f538d4d | 2005-11-02 10:26:59 +1100 | [diff] [blame] | 685 | error = xfs_barrier_test(mp); |
| 686 | if (error) { |
| 687 | xfs_fs_cmn_err(CE_NOTE, mp, |
| 688 | "Disabling barriers, trial barrier write failed"); |
| 689 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
Christoph Hellwig | 4ef19dd | 2006-01-11 15:27:18 +1100 | [diff] [blame] | 690 | return; |
Christoph Hellwig | f538d4d | 2005-11-02 10:26:59 +1100 | [diff] [blame] | 691 | } |
| 692 | } |
| 693 | |
| 694 | void |
| 695 | xfs_blkdev_issue_flush( |
| 696 | xfs_buftarg_t *buftarg) |
| 697 | { |
Dmitry Monakhov | fbd9b09 | 2010-04-28 17:55:06 +0400 | [diff] [blame] | 698 | blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL, |
| 699 | BLKDEV_IFL_WAIT); |
Christoph Hellwig | f538d4d | 2005-11-02 10:26:59 +1100 | [diff] [blame] | 700 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 702 | STATIC void |
| 703 | xfs_close_devices( |
| 704 | struct xfs_mount *mp) |
| 705 | { |
| 706 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { |
Lachlan McIlroy | c032bfc | 2008-07-18 17:13:12 +1000 | [diff] [blame] | 707 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
Christoph Hellwig | b796313 | 2009-03-03 14:48:37 -0500 | [diff] [blame] | 708 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
Lachlan McIlroy | c032bfc | 2008-07-18 17:13:12 +1000 | [diff] [blame] | 709 | xfs_blkdev_put(logdev); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 710 | } |
| 711 | if (mp->m_rtdev_targp) { |
Lachlan McIlroy | c032bfc | 2008-07-18 17:13:12 +1000 | [diff] [blame] | 712 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
Christoph Hellwig | b796313 | 2009-03-03 14:48:37 -0500 | [diff] [blame] | 713 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
Lachlan McIlroy | c032bfc | 2008-07-18 17:13:12 +1000 | [diff] [blame] | 714 | xfs_blkdev_put(rtdev); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 715 | } |
Christoph Hellwig | b796313 | 2009-03-03 14:48:37 -0500 | [diff] [blame] | 716 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 717 | } |
| 718 | |
| 719 | /* |
| 720 | * The file system configurations are: |
| 721 | * (1) device (partition) with data and internal log |
| 722 | * (2) logical volume with data and log subvolumes. |
| 723 | * (3) logical volume with data, log, and realtime subvolumes. |
| 724 | * |
| 725 | * We only have to handle opening the log and realtime volumes here if |
| 726 | * they are present. The data subvolume has already been opened by |
| 727 | * get_sb_bdev() and is stored in sb->s_bdev. |
| 728 | */ |
| 729 | STATIC int |
| 730 | xfs_open_devices( |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 731 | struct xfs_mount *mp) |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 732 | { |
| 733 | struct block_device *ddev = mp->m_super->s_bdev; |
| 734 | struct block_device *logdev = NULL, *rtdev = NULL; |
| 735 | int error; |
| 736 | |
| 737 | /* |
| 738 | * Open real time and log devices - order is important. |
| 739 | */ |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 740 | if (mp->m_logname) { |
| 741 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 742 | if (error) |
| 743 | goto out; |
| 744 | } |
| 745 | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 746 | if (mp->m_rtname) { |
| 747 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 748 | if (error) |
| 749 | goto out_close_logdev; |
| 750 | |
| 751 | if (rtdev == ddev || rtdev == logdev) { |
| 752 | cmn_err(CE_WARN, |
| 753 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); |
| 754 | error = EINVAL; |
| 755 | goto out_close_rtdev; |
| 756 | } |
| 757 | } |
| 758 | |
| 759 | /* |
| 760 | * Setup xfs_mount buffer target pointers |
| 761 | */ |
| 762 | error = ENOMEM; |
Jan Engelhardt | e2a0781 | 2010-03-23 09:52:55 +1100 | [diff] [blame] | 763 | mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0, mp->m_fsname); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 764 | if (!mp->m_ddev_targp) |
| 765 | goto out_close_rtdev; |
| 766 | |
| 767 | if (rtdev) { |
Jan Engelhardt | e2a0781 | 2010-03-23 09:52:55 +1100 | [diff] [blame] | 768 | mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1, mp->m_fsname); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 769 | if (!mp->m_rtdev_targp) |
| 770 | goto out_free_ddev_targ; |
| 771 | } |
| 772 | |
| 773 | if (logdev && logdev != ddev) { |
Jan Engelhardt | e2a0781 | 2010-03-23 09:52:55 +1100 | [diff] [blame] | 774 | mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1, mp->m_fsname); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 775 | if (!mp->m_logdev_targp) |
| 776 | goto out_free_rtdev_targ; |
| 777 | } else { |
| 778 | mp->m_logdev_targp = mp->m_ddev_targp; |
| 779 | } |
| 780 | |
| 781 | return 0; |
| 782 | |
| 783 | out_free_rtdev_targ: |
| 784 | if (mp->m_rtdev_targp) |
Christoph Hellwig | b796313 | 2009-03-03 14:48:37 -0500 | [diff] [blame] | 785 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 786 | out_free_ddev_targ: |
Christoph Hellwig | b796313 | 2009-03-03 14:48:37 -0500 | [diff] [blame] | 787 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 788 | out_close_rtdev: |
| 789 | if (rtdev) |
| 790 | xfs_blkdev_put(rtdev); |
| 791 | out_close_logdev: |
| 792 | if (logdev && logdev != ddev) |
| 793 | xfs_blkdev_put(logdev); |
| 794 | out: |
| 795 | return error; |
| 796 | } |
| 797 | |
Christoph Hellwig | e34b562 | 2008-05-20 15:10:36 +1000 | [diff] [blame] | 798 | /* |
| 799 | * Setup xfs_mount buffer target pointers based on superblock |
| 800 | */ |
| 801 | STATIC int |
| 802 | xfs_setup_devices( |
| 803 | struct xfs_mount *mp) |
| 804 | { |
| 805 | int error; |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 806 | |
Christoph Hellwig | e34b562 | 2008-05-20 15:10:36 +1000 | [diff] [blame] | 807 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
| 808 | mp->m_sb.sb_sectsize); |
| 809 | if (error) |
| 810 | return error; |
| 811 | |
| 812 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { |
| 813 | unsigned int log_sector_size = BBSIZE; |
| 814 | |
| 815 | if (xfs_sb_version_hassector(&mp->m_sb)) |
| 816 | log_sector_size = mp->m_sb.sb_logsectsize; |
| 817 | error = xfs_setsize_buftarg(mp->m_logdev_targp, |
| 818 | mp->m_sb.sb_blocksize, |
| 819 | log_sector_size); |
| 820 | if (error) |
| 821 | return error; |
| 822 | } |
| 823 | if (mp->m_rtdev_targp) { |
| 824 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, |
| 825 | mp->m_sb.sb_blocksize, |
| 826 | mp->m_sb.sb_sectsize); |
| 827 | if (error) |
| 828 | return error; |
| 829 | } |
| 830 | |
| 831 | return 0; |
| 832 | } |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 833 | |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 834 | /* |
| 835 | * XFS AIL push thread support |
| 836 | */ |
| 837 | void |
| 838 | xfsaild_wakeup( |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 839 | struct xfs_ail *ailp, |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 840 | xfs_lsn_t threshold_lsn) |
| 841 | { |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 842 | ailp->xa_target = threshold_lsn; |
| 843 | wake_up_process(ailp->xa_task); |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 844 | } |
| 845 | |
Hannes Eder | 3180e66 | 2009-03-04 19:34:10 +0100 | [diff] [blame] | 846 | STATIC int |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 847 | xfsaild( |
| 848 | void *data) |
| 849 | { |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 850 | struct xfs_ail *ailp = data; |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 851 | xfs_lsn_t last_pushed_lsn = 0; |
Dave Chinner | 453eac8 | 2010-01-11 11:49:58 +0000 | [diff] [blame] | 852 | long tout = 0; /* milliseconds */ |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 853 | |
| 854 | while (!kthread_should_stop()) { |
Dave Chinner | 453eac8 | 2010-01-11 11:49:58 +0000 | [diff] [blame] | 855 | schedule_timeout_interruptible(tout ? |
| 856 | msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 857 | |
| 858 | /* swsusp */ |
| 859 | try_to_freeze(); |
| 860 | |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 861 | ASSERT(ailp->xa_mount->m_log); |
| 862 | if (XFS_FORCED_SHUTDOWN(ailp->xa_mount)) |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 863 | continue; |
| 864 | |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 865 | tout = xfsaild_push(ailp, &last_pushed_lsn); |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 866 | } |
| 867 | |
| 868 | return 0; |
| 869 | } /* xfsaild */ |
| 870 | |
| 871 | int |
| 872 | xfsaild_start( |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 873 | struct xfs_ail *ailp) |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 874 | { |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 875 | ailp->xa_target = 0; |
Jan Engelhardt | e2a0781 | 2010-03-23 09:52:55 +1100 | [diff] [blame] | 876 | ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild/%s", |
| 877 | ailp->xa_mount->m_fsname); |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 878 | if (IS_ERR(ailp->xa_task)) |
| 879 | return -PTR_ERR(ailp->xa_task); |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 880 | return 0; |
| 881 | } |
| 882 | |
| 883 | void |
| 884 | xfsaild_stop( |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 885 | struct xfs_ail *ailp) |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 886 | { |
David Chinner | 82fa901 | 2008-10-30 17:38:26 +1100 | [diff] [blame] | 887 | kthread_stop(ailp->xa_task); |
David Chinner | 249a8c1 | 2008-02-05 12:13:32 +1100 | [diff] [blame] | 888 | } |
| 889 | |
| 890 | |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 891 | /* Catch misguided souls that try to use this interface on XFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | STATIC struct inode * |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 893 | xfs_fs_alloc_inode( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | struct super_block *sb) |
| 895 | { |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 896 | BUG(); |
Lachlan McIlroy | 493dca6 | 2008-10-30 17:36:52 +1100 | [diff] [blame] | 897 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | } |
| 899 | |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 900 | /* |
David Chinner | 99fa8cb | 2008-10-30 17:36:40 +1100 | [diff] [blame] | 901 | * Now that the generic code is guaranteed not to be accessing |
| 902 | * the linux inode, we can reclaim the inode. |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 903 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | STATIC void |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 905 | xfs_fs_destroy_inode( |
Christoph Hellwig | 848ce8f | 2009-09-29 13:48:56 +0000 | [diff] [blame] | 906 | struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | { |
Christoph Hellwig | 848ce8f | 2009-09-29 13:48:56 +0000 | [diff] [blame] | 908 | struct xfs_inode *ip = XFS_I(inode); |
| 909 | |
| 910 | xfs_itrace_entry(ip); |
David Chinner | 99fa8cb | 2008-10-30 17:36:40 +1100 | [diff] [blame] | 911 | |
| 912 | XFS_STATS_INC(vn_reclaim); |
Christoph Hellwig | 848ce8f | 2009-09-29 13:48:56 +0000 | [diff] [blame] | 913 | |
| 914 | /* bad inode, get out here ASAP */ |
| 915 | if (is_bad_inode(inode)) |
| 916 | goto out_reclaim; |
| 917 | |
| 918 | xfs_ioend_wait(ip); |
| 919 | |
| 920 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
| 921 | |
| 922 | /* |
| 923 | * We should never get here with one of the reclaim flags already set. |
| 924 | */ |
| 925 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); |
| 926 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); |
| 927 | |
| 928 | /* |
Dave Chinner | 57817c6 | 2010-01-10 23:51:47 +0000 | [diff] [blame] | 929 | * We always use background reclaim here because even if the |
| 930 | * inode is clean, it still may be under IO and hence we have |
| 931 | * to take the flush lock. The background reclaim path handles |
| 932 | * this more efficiently than we can here, so simply let background |
| 933 | * reclaim tear down all inodes. |
Christoph Hellwig | 848ce8f | 2009-09-29 13:48:56 +0000 | [diff] [blame] | 934 | */ |
Christoph Hellwig | 848ce8f | 2009-09-29 13:48:56 +0000 | [diff] [blame] | 935 | out_reclaim: |
Dave Chinner | 57817c6 | 2010-01-10 23:51:47 +0000 | [diff] [blame] | 936 | xfs_inode_set_reclaim_tag(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | } |
| 938 | |
David Chinner | 07c8f67 | 2008-10-30 16:11:59 +1100 | [diff] [blame] | 939 | /* |
| 940 | * Slab object creation initialisation for the XFS inode. |
| 941 | * This covers only the idempotent fields in the XFS inode; |
| 942 | * all other fields need to be initialised on allocation |
| 943 | * from the slab. This avoids the need to repeatedly intialise |
| 944 | * fields in the xfs inode that left in the initialise state |
| 945 | * when freeing the inode. |
| 946 | */ |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 947 | STATIC void |
| 948 | xfs_fs_inode_init_once( |
David Chinner | 07c8f67 | 2008-10-30 16:11:59 +1100 | [diff] [blame] | 949 | void *inode) |
| 950 | { |
| 951 | struct xfs_inode *ip = inode; |
| 952 | |
| 953 | memset(ip, 0, sizeof(struct xfs_inode)); |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 954 | |
| 955 | /* vfs inode */ |
| 956 | inode_init_once(VFS_I(ip)); |
| 957 | |
| 958 | /* xfs inode */ |
David Chinner | 07c8f67 | 2008-10-30 16:11:59 +1100 | [diff] [blame] | 959 | atomic_set(&ip->i_iocount, 0); |
| 960 | atomic_set(&ip->i_pincount, 0); |
| 961 | spin_lock_init(&ip->i_flags_lock); |
David Chinner | 07c8f67 | 2008-10-30 16:11:59 +1100 | [diff] [blame] | 962 | init_waitqueue_head(&ip->i_ipin_wait); |
| 963 | /* |
| 964 | * Because we want to use a counting completion, complete |
| 965 | * the flush completion once to allow a single access to |
| 966 | * the flush completion without blocking. |
| 967 | */ |
| 968 | init_completion(&ip->i_flush); |
| 969 | complete(&ip->i_flush); |
| 970 | |
| 971 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
| 972 | "xfsino", ip->i_ino); |
David Chinner | 07c8f67 | 2008-10-30 16:11:59 +1100 | [diff] [blame] | 973 | } |
| 974 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | /* |
Christoph Hellwig | f9581b1 | 2009-10-06 20:29:26 +0000 | [diff] [blame] | 976 | * Dirty the XFS inode when mark_inode_dirty_sync() is called so that |
| 977 | * we catch unlogged VFS level updates to the inode. Care must be taken |
| 978 | * here - the transaction code calls mark_inode_dirty_sync() to mark the |
| 979 | * VFS inode dirty in a transaction and clears the i_update_core field; |
| 980 | * it must clear the field after calling mark_inode_dirty_sync() to |
| 981 | * correctly indicate that the dirty state has been propagated into the |
| 982 | * inode log item. |
| 983 | * |
| 984 | * We need the barrier() to maintain correct ordering between unlogged |
| 985 | * updates and the transaction commit code that clears the i_update_core |
| 986 | * field. This requires all updates to be completed before marking the |
| 987 | * inode dirty. |
| 988 | */ |
| 989 | STATIC void |
| 990 | xfs_fs_dirty_inode( |
| 991 | struct inode *inode) |
| 992 | { |
| 993 | barrier(); |
| 994 | XFS_I(inode)->i_update_core = 1; |
| 995 | } |
| 996 | |
Christoph Hellwig | 07fec73 | 2010-02-09 11:43:49 +1100 | [diff] [blame] | 997 | STATIC int |
| 998 | xfs_log_inode( |
| 999 | struct xfs_inode *ip) |
| 1000 | { |
| 1001 | struct xfs_mount *mp = ip->i_mount; |
| 1002 | struct xfs_trans *tp; |
| 1003 | int error; |
| 1004 | |
| 1005 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
| 1006 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); |
| 1007 | error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); |
| 1008 | |
| 1009 | if (error) { |
| 1010 | xfs_trans_cancel(tp, 0); |
| 1011 | /* we need to return with the lock hold shared */ |
| 1012 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
| 1013 | return error; |
| 1014 | } |
| 1015 | |
| 1016 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 1017 | |
| 1018 | /* |
| 1019 | * Note - it's possible that we might have pushed ourselves out of the |
| 1020 | * way during trans_reserve which would flush the inode. But there's |
| 1021 | * no guarantee that the inode buffer has actually gone out yet (it's |
| 1022 | * delwri). Plus the buffer could be pinned anyway if it's part of |
| 1023 | * an inode in another recent transaction. So we play it safe and |
| 1024 | * fire off the transaction anyway. |
| 1025 | */ |
| 1026 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); |
| 1027 | xfs_trans_ihold(tp, ip); |
| 1028 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
| 1029 | xfs_trans_set_sync(tp); |
| 1030 | error = xfs_trans_commit(tp, 0); |
| 1031 | xfs_ilock_demote(ip, XFS_ILOCK_EXCL); |
| 1032 | |
| 1033 | return error; |
| 1034 | } |
| 1035 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | STATIC int |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1037 | xfs_fs_write_inode( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | struct inode *inode, |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 1039 | struct writeback_control *wbc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | { |
Dave Chinner | 2e65609 | 2008-11-28 14:23:33 +1100 | [diff] [blame] | 1041 | struct xfs_inode *ip = XFS_I(inode); |
Christoph Hellwig | d4bb6d0 | 2009-02-04 09:36:19 +0100 | [diff] [blame] | 1042 | struct xfs_mount *mp = ip->i_mount; |
Christoph Hellwig | 07fec73 | 2010-02-09 11:43:49 +1100 | [diff] [blame] | 1043 | int error = EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | |
Dave Chinner | 2e65609 | 2008-11-28 14:23:33 +1100 | [diff] [blame] | 1045 | xfs_itrace_entry(ip); |
Christoph Hellwig | d4bb6d0 | 2009-02-04 09:36:19 +0100 | [diff] [blame] | 1046 | |
| 1047 | if (XFS_FORCED_SHUTDOWN(mp)) |
| 1048 | return XFS_ERROR(EIO); |
| 1049 | |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 1050 | if (wbc->sync_mode == WB_SYNC_ALL) { |
Christoph Hellwig | 07fec73 | 2010-02-09 11:43:49 +1100 | [diff] [blame] | 1051 | /* |
| 1052 | * Make sure the inode has hit stable storage. By using the |
| 1053 | * log and the fsync transactions we reduce the IOs we have |
| 1054 | * to do here from two (log and inode) to just the log. |
| 1055 | * |
| 1056 | * Note: We still need to do a delwri write of the inode after |
| 1057 | * this to flush it to the backing buffer so that bulkstat |
| 1058 | * works properly if this is the first time the inode has been |
| 1059 | * written. Because we hold the ilock atomically over the |
| 1060 | * transaction commit and the inode flush we are guaranteed |
| 1061 | * that the inode is not pinned when it returns. If the flush |
| 1062 | * lock is already held, then the inode has already been |
| 1063 | * flushed once and we don't need to flush it again. Hence |
| 1064 | * the code will only flush the inode if it isn't already |
| 1065 | * being flushed. |
| 1066 | */ |
Christoph Hellwig | 37bc574 | 2010-04-20 17:00:59 +1000 | [diff] [blame] | 1067 | xfs_ioend_wait(ip); |
Christoph Hellwig | d4bb6d0 | 2009-02-04 09:36:19 +0100 | [diff] [blame] | 1068 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
Christoph Hellwig | 07fec73 | 2010-02-09 11:43:49 +1100 | [diff] [blame] | 1069 | if (ip->i_update_core) { |
| 1070 | error = xfs_log_inode(ip); |
| 1071 | if (error) |
| 1072 | goto out_unlock; |
| 1073 | } |
Christoph Hellwig | d4bb6d0 | 2009-02-04 09:36:19 +0100 | [diff] [blame] | 1074 | } else { |
Christoph Hellwig | 07fec73 | 2010-02-09 11:43:49 +1100 | [diff] [blame] | 1075 | /* |
| 1076 | * We make this non-blocking if the inode is contended, return |
| 1077 | * EAGAIN to indicate to the caller that they did not succeed. |
| 1078 | * This prevents the flush path from blocking on inodes inside |
| 1079 | * another operation right now, they get caught later by xfs_sync. |
| 1080 | */ |
Christoph Hellwig | d4bb6d0 | 2009-02-04 09:36:19 +0100 | [diff] [blame] | 1081 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
| 1082 | goto out; |
Christoph Hellwig | d4bb6d0 | 2009-02-04 09:36:19 +0100 | [diff] [blame] | 1083 | } |
| 1084 | |
Christoph Hellwig | 07fec73 | 2010-02-09 11:43:49 +1100 | [diff] [blame] | 1085 | if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) |
| 1086 | goto out_unlock; |
| 1087 | |
| 1088 | /* |
| 1089 | * Now we have the flush lock and the inode is not pinned, we can check |
| 1090 | * if the inode is really clean as we know that there are no pending |
| 1091 | * transaction completions, it is not waiting on the delayed write |
| 1092 | * queue and there is no IO in progress. |
| 1093 | */ |
| 1094 | if (xfs_inode_clean(ip)) { |
| 1095 | xfs_ifunlock(ip); |
| 1096 | error = 0; |
| 1097 | goto out_unlock; |
| 1098 | } |
| 1099 | error = xfs_iflush(ip, 0); |
| 1100 | |
Christoph Hellwig | d4bb6d0 | 2009-02-04 09:36:19 +0100 | [diff] [blame] | 1101 | out_unlock: |
| 1102 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
| 1103 | out: |
Lachlan McIlroy | e893bff | 2007-10-12 11:13:35 +1000 | [diff] [blame] | 1104 | /* |
| 1105 | * if we failed to write out the inode then mark |
| 1106 | * it dirty again so we'll try again later. |
| 1107 | */ |
| 1108 | if (error) |
Dave Chinner | 2e65609 | 2008-11-28 14:23:33 +1100 | [diff] [blame] | 1109 | xfs_mark_inode_dirty_sync(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | return -error; |
| 1111 | } |
| 1112 | |
| 1113 | STATIC void |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1114 | xfs_fs_clear_inode( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | struct inode *inode) |
| 1116 | { |
Christoph Hellwig | 1543d79 | 2007-08-29 11:46:47 +1000 | [diff] [blame] | 1117 | xfs_inode_t *ip = XFS_I(inode); |
Christoph Hellwig | 56d433e | 2005-09-05 08:23:54 +1000 | [diff] [blame] | 1118 | |
David Chinner | 99fa8cb | 2008-10-30 17:36:40 +1100 | [diff] [blame] | 1119 | xfs_itrace_entry(ip); |
| 1120 | XFS_STATS_INC(vn_rele); |
| 1121 | XFS_STATS_INC(vn_remove); |
| 1122 | XFS_STATS_DEC(vn_active); |
Christoph Hellwig | 56d433e | 2005-09-05 08:23:54 +1000 | [diff] [blame] | 1123 | |
Christoph Hellwig | 033da48 | 2009-10-19 04:05:26 +0000 | [diff] [blame] | 1124 | /* |
| 1125 | * The iolock is used by the file system to coordinate reads, |
| 1126 | * writes, and block truncates. Up to this point the lock |
| 1127 | * protected concurrent accesses by users of the inode. But |
| 1128 | * from here forward we're doing some final processing of the |
| 1129 | * inode because we're done with it, and although we reuse the |
| 1130 | * iolock for protection it is really a distinct lock class |
| 1131 | * (in the lockdep sense) from before. To keep lockdep happy |
| 1132 | * (and basically indicate what we are doing), we explicitly |
| 1133 | * re-init the iolock here. |
| 1134 | */ |
| 1135 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
| 1136 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); |
| 1137 | |
David Chinner | 99fa8cb | 2008-10-30 17:36:40 +1100 | [diff] [blame] | 1138 | xfs_inactive(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | } |
| 1140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | STATIC void |
Christoph Hellwig | a738159 | 2008-08-13 16:04:05 +1000 | [diff] [blame] | 1142 | xfs_free_fsname( |
| 1143 | struct xfs_mount *mp) |
| 1144 | { |
| 1145 | kfree(mp->m_fsname); |
| 1146 | kfree(mp->m_rtname); |
| 1147 | kfree(mp->m_logname); |
| 1148 | } |
| 1149 | |
| 1150 | STATIC void |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1151 | xfs_fs_put_super( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | struct super_block *sb) |
| 1153 | { |
Christoph Hellwig | 745f691 | 2007-08-30 17:20:39 +1000 | [diff] [blame] | 1154 | struct xfs_mount *mp = XFS_M(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | |
David Chinner | a167b17 | 2008-10-30 17:06:18 +1100 | [diff] [blame] | 1156 | xfs_syncd_stop(mp); |
Christoph Hellwig | 075fe10 | 2009-06-08 15:35:48 +0200 | [diff] [blame] | 1157 | |
| 1158 | if (!(sb->s_flags & MS_RDONLY)) { |
| 1159 | /* |
| 1160 | * XXX(hch): this should be SYNC_WAIT. |
| 1161 | * |
| 1162 | * Or more likely not needed at all because the VFS is already |
| 1163 | * calling ->sync_fs after shutting down all filestem |
| 1164 | * operations and just before calling ->put_super. |
| 1165 | */ |
| 1166 | xfs_sync_data(mp, 0); |
| 1167 | xfs_sync_attr(mp, 0); |
| 1168 | } |
Christoph Hellwig | e48ad31 | 2008-05-20 11:30:52 +1000 | [diff] [blame] | 1169 | |
Christoph Hellwig | e48ad31 | 2008-05-20 11:30:52 +1000 | [diff] [blame] | 1170 | /* |
| 1171 | * Blow away any referenced inode in the filestreams cache. |
| 1172 | * This can and will cause log traffic as inodes go inactive |
| 1173 | * here. |
| 1174 | */ |
| 1175 | xfs_filestream_unmount(mp); |
| 1176 | |
| 1177 | XFS_bflush(mp->m_ddev_targp); |
Christoph Hellwig | e48ad31 | 2008-05-20 11:30:52 +1000 | [diff] [blame] | 1178 | |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 1179 | xfs_unmountfs(mp); |
Christoph Hellwig | 6203300 | 2008-08-13 16:50:21 +1000 | [diff] [blame] | 1180 | xfs_freesb(mp); |
Dave Chinner | 9bf729c | 2010-04-29 09:55:50 +1000 | [diff] [blame] | 1181 | xfs_inode_shrinker_unregister(mp); |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1182 | xfs_icsb_destroy_counters(mp); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 1183 | xfs_close_devices(mp); |
Christoph Hellwig | a738159 | 2008-08-13 16:04:05 +1000 | [diff] [blame] | 1184 | xfs_free_fsname(mp); |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1185 | kfree(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | } |
| 1187 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | STATIC int |
Christoph Hellwig | 69961a2 | 2009-10-06 20:29:28 +0000 | [diff] [blame] | 1189 | xfs_fs_sync_fs( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | struct super_block *sb, |
| 1191 | int wait) |
| 1192 | { |
Christoph Hellwig | 745f691 | 2007-08-30 17:20:39 +1000 | [diff] [blame] | 1193 | struct xfs_mount *mp = XFS_M(sb); |
Nathan Scott | b83bd13 | 2006-06-09 16:48:30 +1000 | [diff] [blame] | 1194 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | |
Lachlan McIlroy | e893bff | 2007-10-12 11:13:35 +1000 | [diff] [blame] | 1196 | /* |
Christoph Hellwig | 69961a2 | 2009-10-06 20:29:28 +0000 | [diff] [blame] | 1197 | * Not much we can do for the first async pass. Writing out the |
| 1198 | * superblock would be counter-productive as we are going to redirty |
| 1199 | * when writing out other data and metadata (and writing out a single |
| 1200 | * block is quite fast anyway). |
| 1201 | * |
| 1202 | * Try to asynchronously kick off quota syncing at least. |
Lachlan McIlroy | e893bff | 2007-10-12 11:13:35 +1000 | [diff] [blame] | 1203 | */ |
Christoph Hellwig | 69961a2 | 2009-10-06 20:29:28 +0000 | [diff] [blame] | 1204 | if (!wait) { |
| 1205 | xfs_qm_sync(mp, SYNC_TRYLOCK); |
| 1206 | return 0; |
| 1207 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | |
Christoph Hellwig | 69961a2 | 2009-10-06 20:29:28 +0000 | [diff] [blame] | 1209 | error = xfs_quiesce_data(mp); |
| 1210 | if (error) |
| 1211 | return -error; |
| 1212 | |
| 1213 | if (laptop_mode) { |
Christoph Hellwig | 7439449 | 2007-08-30 17:21:22 +1000 | [diff] [blame] | 1214 | int prev_sync_seq = mp->m_sync_seq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | |
| 1216 | /* |
| 1217 | * The disk must be active because we're syncing. |
| 1218 | * We schedule xfssyncd now (now that the disk is |
| 1219 | * active) instead of later (when it might not be). |
| 1220 | */ |
Christoph Hellwig | 7439449 | 2007-08-30 17:21:22 +1000 | [diff] [blame] | 1221 | wake_up_process(mp->m_sync_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | /* |
| 1223 | * We have to wait for the sync iteration to complete. |
| 1224 | * If we don't, the disk activity caused by the sync |
| 1225 | * will come after the sync is completed, and that |
| 1226 | * triggers another sync from laptop mode. |
| 1227 | */ |
Christoph Hellwig | 7439449 | 2007-08-30 17:21:22 +1000 | [diff] [blame] | 1228 | wait_event(mp->m_wait_single_sync_task, |
| 1229 | mp->m_sync_seq != prev_sync_seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | } |
| 1231 | |
Christoph Hellwig | 69961a2 | 2009-10-06 20:29:28 +0000 | [diff] [blame] | 1232 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | STATIC int |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1236 | xfs_fs_statfs( |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 1237 | struct dentry *dentry, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | struct kstatfs *statp) |
| 1239 | { |
Christoph Hellwig | 4ca488e | 2007-10-11 18:09:40 +1000 | [diff] [blame] | 1240 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
| 1241 | xfs_sb_t *sbp = &mp->m_sb; |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1242 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
Christoph Hellwig | 4ca488e | 2007-10-11 18:09:40 +1000 | [diff] [blame] | 1243 | __uint64_t fakeinos, id; |
| 1244 | xfs_extlen_t lsize; |
| 1245 | |
| 1246 | statp->f_type = XFS_SB_MAGIC; |
| 1247 | statp->f_namelen = MAXNAMELEN - 1; |
| 1248 | |
| 1249 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); |
| 1250 | statp->f_fsid.val[0] = (u32)id; |
| 1251 | statp->f_fsid.val[1] = (u32)(id >> 32); |
| 1252 | |
Christoph Hellwig | d4d90b5 | 2008-04-22 17:34:37 +1000 | [diff] [blame] | 1253 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
Christoph Hellwig | 4ca488e | 2007-10-11 18:09:40 +1000 | [diff] [blame] | 1254 | |
| 1255 | spin_lock(&mp->m_sb_lock); |
| 1256 | statp->f_bsize = sbp->sb_blocksize; |
| 1257 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; |
| 1258 | statp->f_blocks = sbp->sb_dblocks - lsize; |
| 1259 | statp->f_bfree = statp->f_bavail = |
| 1260 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
| 1261 | fakeinos = statp->f_bfree << sbp->sb_inopblog; |
Christoph Hellwig | 4ca488e | 2007-10-11 18:09:40 +1000 | [diff] [blame] | 1262 | statp->f_files = |
| 1263 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); |
| 1264 | if (mp->m_maxicount) |
Christoph Hellwig | a19d9f8 | 2009-03-29 09:51:08 +0200 | [diff] [blame] | 1265 | statp->f_files = min_t(typeof(statp->f_files), |
| 1266 | statp->f_files, |
| 1267 | mp->m_maxicount); |
Christoph Hellwig | 4ca488e | 2007-10-11 18:09:40 +1000 | [diff] [blame] | 1268 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); |
| 1269 | spin_unlock(&mp->m_sb_lock); |
| 1270 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1271 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
| 1272 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == |
| 1273 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) |
| 1274 | xfs_qm_statvfs(ip, statp); |
Christoph Hellwig | 4ca488e | 2007-10-11 18:09:40 +1000 | [diff] [blame] | 1275 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | } |
| 1277 | |
Eric Sandeen | d5db0f9 | 2010-02-05 22:59:53 +0000 | [diff] [blame] | 1278 | STATIC void |
| 1279 | xfs_save_resvblks(struct xfs_mount *mp) |
| 1280 | { |
| 1281 | __uint64_t resblks = 0; |
| 1282 | |
| 1283 | mp->m_resblks_save = mp->m_resblks; |
| 1284 | xfs_reserve_blocks(mp, &resblks, NULL); |
| 1285 | } |
| 1286 | |
| 1287 | STATIC void |
| 1288 | xfs_restore_resvblks(struct xfs_mount *mp) |
| 1289 | { |
| 1290 | __uint64_t resblks; |
| 1291 | |
| 1292 | if (mp->m_resblks_save) { |
| 1293 | resblks = mp->m_resblks_save; |
| 1294 | mp->m_resblks_save = 0; |
| 1295 | } else |
| 1296 | resblks = xfs_default_resblks(mp); |
| 1297 | |
| 1298 | xfs_reserve_blocks(mp, &resblks, NULL); |
| 1299 | } |
| 1300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | STATIC int |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1302 | xfs_fs_remount( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | struct super_block *sb, |
| 1304 | int *flags, |
| 1305 | char *options) |
| 1306 | { |
Christoph Hellwig | 745f691 | 2007-08-30 17:20:39 +1000 | [diff] [blame] | 1307 | struct xfs_mount *mp = XFS_M(sb); |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1308 | substring_t args[MAX_OPT_ARGS]; |
| 1309 | char *p; |
Christoph Hellwig | 7884bc8 | 2009-01-19 02:04:07 +0100 | [diff] [blame] | 1310 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1312 | while ((p = strsep(&options, ",")) != NULL) { |
| 1313 | int token; |
Christoph Hellwig | bdd907b | 2008-05-20 15:10:44 +1000 | [diff] [blame] | 1314 | |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1315 | if (!*p) |
| 1316 | continue; |
Christoph Hellwig | 48b62a1 | 2008-05-20 11:30:39 +1000 | [diff] [blame] | 1317 | |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1318 | token = match_token(p, tokens, args); |
| 1319 | switch (token) { |
| 1320 | case Opt_barrier: |
Christoph Hellwig | 48b62a1 | 2008-05-20 11:30:39 +1000 | [diff] [blame] | 1321 | mp->m_flags |= XFS_MOUNT_BARRIER; |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1322 | |
| 1323 | /* |
| 1324 | * Test if barriers are actually working if we can, |
| 1325 | * else delay this check until the filesystem is |
| 1326 | * marked writeable. |
| 1327 | */ |
| 1328 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) |
| 1329 | xfs_mountfs_check_barriers(mp); |
| 1330 | break; |
| 1331 | case Opt_nobarrier: |
Christoph Hellwig | 48b62a1 | 2008-05-20 11:30:39 +1000 | [diff] [blame] | 1332 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1333 | break; |
| 1334 | default: |
Christoph Hellwig | 6efdf28 | 2008-09-17 16:49:33 +1000 | [diff] [blame] | 1335 | /* |
| 1336 | * Logically we would return an error here to prevent |
| 1337 | * users from believing they might have changed |
| 1338 | * mount options using remount which can't be changed. |
| 1339 | * |
| 1340 | * But unfortunately mount(8) adds all options from |
| 1341 | * mtab and fstab to the mount arguments in some cases |
| 1342 | * so we can't blindly reject options, but have to |
| 1343 | * check for each specified option if it actually |
| 1344 | * differs from the currently set option and only |
| 1345 | * reject it if that's the case. |
| 1346 | * |
| 1347 | * Until that is implemented we return success for |
| 1348 | * every remount request, and silently ignore all |
| 1349 | * options that we can't actually change. |
| 1350 | */ |
| 1351 | #if 0 |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1352 | printk(KERN_INFO |
| 1353 | "XFS: mount option \"%s\" not supported for remount\n", p); |
| 1354 | return -EINVAL; |
Christoph Hellwig | 6efdf28 | 2008-09-17 16:49:33 +1000 | [diff] [blame] | 1355 | #else |
Christoph Hellwig | 6c5e51d | 2008-10-12 14:30:44 +0200 | [diff] [blame] | 1356 | break; |
Christoph Hellwig | 6efdf28 | 2008-09-17 16:49:33 +1000 | [diff] [blame] | 1357 | #endif |
Christoph Hellwig | 48b62a1 | 2008-05-20 11:30:39 +1000 | [diff] [blame] | 1358 | } |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1359 | } |
| 1360 | |
Christoph Hellwig | 7884bc8 | 2009-01-19 02:04:07 +0100 | [diff] [blame] | 1361 | /* ro -> rw */ |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1362 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
| 1363 | mp->m_flags &= ~XFS_MOUNT_RDONLY; |
| 1364 | if (mp->m_flags & XFS_MOUNT_BARRIER) |
| 1365 | xfs_mountfs_check_barriers(mp); |
Christoph Hellwig | 7884bc8 | 2009-01-19 02:04:07 +0100 | [diff] [blame] | 1366 | |
| 1367 | /* |
| 1368 | * If this is the first remount to writeable state we |
| 1369 | * might have some superblock changes to update. |
| 1370 | */ |
| 1371 | if (mp->m_update_flags) { |
| 1372 | error = xfs_mount_log_sb(mp, mp->m_update_flags); |
| 1373 | if (error) { |
| 1374 | cmn_err(CE_WARN, |
| 1375 | "XFS: failed to write sb changes"); |
| 1376 | return error; |
| 1377 | } |
| 1378 | mp->m_update_flags = 0; |
| 1379 | } |
Dave Chinner | cbe132a | 2010-01-26 15:08:49 +1100 | [diff] [blame] | 1380 | |
| 1381 | /* |
| 1382 | * Fill out the reserve pool if it is empty. Use the stashed |
| 1383 | * value if it is non-zero, otherwise go with the default. |
| 1384 | */ |
Eric Sandeen | d5db0f9 | 2010-02-05 22:59:53 +0000 | [diff] [blame] | 1385 | xfs_restore_resvblks(mp); |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1386 | } |
| 1387 | |
| 1388 | /* rw -> ro */ |
| 1389 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { |
Dave Chinner | cbe132a | 2010-01-26 15:08:49 +1100 | [diff] [blame] | 1390 | /* |
| 1391 | * After we have synced the data but before we sync the |
| 1392 | * metadata, we need to free up the reserve block pool so that |
| 1393 | * the used block count in the superblock on disk is correct at |
| 1394 | * the end of the remount. Stash the current reserve pool size |
| 1395 | * so that if we get remounted rw, we can return it to the same |
| 1396 | * size. |
| 1397 | */ |
Dave Chinner | cbe132a | 2010-01-26 15:08:49 +1100 | [diff] [blame] | 1398 | |
David Chinner | e9f1c6e | 2008-10-30 17:15:50 +1100 | [diff] [blame] | 1399 | xfs_quiesce_data(mp); |
Eric Sandeen | d5db0f9 | 2010-02-05 22:59:53 +0000 | [diff] [blame] | 1400 | xfs_save_resvblks(mp); |
David Chinner | 76bf105 | 2008-10-30 17:16:21 +1100 | [diff] [blame] | 1401 | xfs_quiesce_attr(mp); |
Christoph Hellwig | 48b62a1 | 2008-05-20 11:30:39 +1000 | [diff] [blame] | 1402 | mp->m_flags |= XFS_MOUNT_RDONLY; |
| 1403 | } |
| 1404 | |
Christoph Hellwig | 62a877e | 2008-07-18 17:12:36 +1000 | [diff] [blame] | 1405 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | } |
| 1407 | |
Christoph Hellwig | 9909c4a | 2007-10-11 18:11:14 +1000 | [diff] [blame] | 1408 | /* |
| 1409 | * Second stage of a freeze. The data is already frozen so we only |
David Chinner | 76bf105 | 2008-10-30 17:16:21 +1100 | [diff] [blame] | 1410 | * need to take care of the metadata. Once that's done write a dummy |
Christoph Hellwig | 9909c4a | 2007-10-11 18:11:14 +1000 | [diff] [blame] | 1411 | * record to dirty the log in case of a crash while frozen. |
| 1412 | */ |
Takashi Sato | c4be0c1 | 2009-01-09 16:40:58 -0800 | [diff] [blame] | 1413 | STATIC int |
| 1414 | xfs_fs_freeze( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | struct super_block *sb) |
| 1416 | { |
Christoph Hellwig | 9909c4a | 2007-10-11 18:11:14 +1000 | [diff] [blame] | 1417 | struct xfs_mount *mp = XFS_M(sb); |
| 1418 | |
Eric Sandeen | d5db0f9 | 2010-02-05 22:59:53 +0000 | [diff] [blame] | 1419 | xfs_save_resvblks(mp); |
David Chinner | 76bf105 | 2008-10-30 17:16:21 +1100 | [diff] [blame] | 1420 | xfs_quiesce_attr(mp); |
Takashi Sato | c4be0c1 | 2009-01-09 16:40:58 -0800 | [diff] [blame] | 1421 | return -xfs_fs_log_dummy(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | } |
| 1423 | |
| 1424 | STATIC int |
Eric Sandeen | d5db0f9 | 2010-02-05 22:59:53 +0000 | [diff] [blame] | 1425 | xfs_fs_unfreeze( |
| 1426 | struct super_block *sb) |
| 1427 | { |
| 1428 | struct xfs_mount *mp = XFS_M(sb); |
| 1429 | |
| 1430 | xfs_restore_resvblks(mp); |
| 1431 | return 0; |
| 1432 | } |
| 1433 | |
| 1434 | STATIC int |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1435 | xfs_fs_show_options( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | struct seq_file *m, |
| 1437 | struct vfsmount *mnt) |
| 1438 | { |
Christoph Hellwig | 745f691 | 2007-08-30 17:20:39 +1000 | [diff] [blame] | 1439 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | } |
| 1441 | |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1442 | /* |
| 1443 | * This function fills in xfs_mount_t fields based on mount args. |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1444 | * Note: the superblock _has_ now been read in. |
| 1445 | */ |
| 1446 | STATIC int |
| 1447 | xfs_finish_flags( |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1448 | struct xfs_mount *mp) |
| 1449 | { |
| 1450 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); |
| 1451 | |
Frederik Schwarzer | 025dfda | 2008-10-16 19:02:37 +0200 | [diff] [blame] | 1452 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1453 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1454 | if (mp->m_logbsize <= 0 && |
| 1455 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1456 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1457 | } else if (mp->m_logbsize > 0 && |
| 1458 | mp->m_logbsize < mp->m_sb.sb_logsunit) { |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1459 | cmn_err(CE_WARN, |
| 1460 | "XFS: logbuf size must be greater than or equal to log stripe size"); |
| 1461 | return XFS_ERROR(EINVAL); |
| 1462 | } |
| 1463 | } else { |
| 1464 | /* Fail a mount if the logbuf is larger than 32K */ |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1465 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1466 | cmn_err(CE_WARN, |
| 1467 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); |
| 1468 | return XFS_ERROR(EINVAL); |
| 1469 | } |
| 1470 | } |
| 1471 | |
| 1472 | /* |
| 1473 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly |
| 1474 | * told by noattr2 to turn it off |
| 1475 | */ |
| 1476 | if (xfs_sb_version_hasattr2(&mp->m_sb) && |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1477 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1478 | mp->m_flags |= XFS_MOUNT_ATTR2; |
| 1479 | |
| 1480 | /* |
| 1481 | * prohibit r/w mounts of read-only filesystems |
| 1482 | */ |
| 1483 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { |
| 1484 | cmn_err(CE_WARN, |
| 1485 | "XFS: cannot mount a read-only filesystem as read-write"); |
| 1486 | return XFS_ERROR(EROFS); |
| 1487 | } |
| 1488 | |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1489 | return 0; |
| 1490 | } |
| 1491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | STATIC int |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1493 | xfs_fs_fill_super( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | struct super_block *sb, |
| 1495 | void *data, |
| 1496 | int silent) |
| 1497 | { |
Christoph Hellwig | f3dcc13 | 2008-03-27 18:00:54 +1100 | [diff] [blame] | 1498 | struct inode *root; |
Christoph Hellwig | 745f691 | 2007-08-30 17:20:39 +1000 | [diff] [blame] | 1499 | struct xfs_mount *mp = NULL; |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1500 | int flags = 0, error = ENOMEM; |
Christoph Hellwig | bdd907b | 2008-05-20 15:10:44 +1000 | [diff] [blame] | 1501 | |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1502 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
| 1503 | if (!mp) |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1504 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1506 | spin_lock_init(&mp->m_sb_lock); |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1507 | mutex_init(&mp->m_growlock); |
| 1508 | atomic_set(&mp->m_active_trans, 0); |
Christoph Hellwig | 7439449 | 2007-08-30 17:21:22 +1000 | [diff] [blame] | 1509 | INIT_LIST_HEAD(&mp->m_sync_list); |
| 1510 | spin_lock_init(&mp->m_sync_lock); |
| 1511 | init_waitqueue_head(&mp->m_wait_single_sync_task); |
| 1512 | |
Christoph Hellwig | b267ce9 | 2007-08-30 17:21:30 +1000 | [diff] [blame] | 1513 | mp->m_super = sb; |
| 1514 | sb->s_fs_info = mp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | |
Christoph Hellwig | 288699f | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 1516 | error = xfs_parseargs(mp, (char *)data); |
Christoph Hellwig | 745f691 | 2007-08-30 17:20:39 +1000 | [diff] [blame] | 1517 | if (error) |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1518 | goto out_free_fsname; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | |
| 1520 | sb_min_blocksize(sb, BBSIZE); |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 1521 | sb->s_xattr = xfs_xattr_handlers; |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1522 | sb->s_export_op = &xfs_export_operations; |
Christoph Hellwig | fcafb71 | 2009-02-09 08:47:34 +0100 | [diff] [blame] | 1523 | #ifdef CONFIG_XFS_QUOTA |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1524 | sb->s_qcop = &xfs_quotactl_operations; |
Christoph Hellwig | fcafb71 | 2009-02-09 08:47:34 +0100 | [diff] [blame] | 1525 | #endif |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1526 | sb->s_op = &xfs_super_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1528 | if (silent) |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1529 | flags |= XFS_MFSI_QUIET; |
| 1530 | |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1531 | error = xfs_open_devices(mp); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 1532 | if (error) |
Christoph Hellwig | 288699f | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 1533 | goto out_free_fsname; |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1534 | |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1535 | if (xfs_icsb_init_counters(mp)) |
| 1536 | mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB; |
| 1537 | |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1538 | error = xfs_readsb(mp, flags); |
| 1539 | if (error) |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1540 | goto out_destroy_counters; |
| 1541 | |
| 1542 | error = xfs_finish_flags(mp); |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1543 | if (error) |
Christoph Hellwig | effa2ed | 2008-05-20 15:11:05 +1000 | [diff] [blame] | 1544 | goto out_free_sb; |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1545 | |
Christoph Hellwig | e34b562 | 2008-05-20 15:10:36 +1000 | [diff] [blame] | 1546 | error = xfs_setup_devices(mp); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 1547 | if (error) |
Christoph Hellwig | effa2ed | 2008-05-20 15:11:05 +1000 | [diff] [blame] | 1548 | goto out_free_sb; |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1549 | |
| 1550 | if (mp->m_flags & XFS_MOUNT_BARRIER) |
| 1551 | xfs_mountfs_check_barriers(mp); |
| 1552 | |
| 1553 | error = xfs_filestream_mount(mp); |
| 1554 | if (error) |
Christoph Hellwig | effa2ed | 2008-05-20 15:11:05 +1000 | [diff] [blame] | 1555 | goto out_free_sb; |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1556 | |
Christoph Hellwig | 4249023 | 2008-08-13 16:49:32 +1000 | [diff] [blame] | 1557 | error = xfs_mountfs(mp); |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1558 | if (error) |
Christoph Hellwig | 120226c | 2008-05-20 15:11:11 +1000 | [diff] [blame] | 1559 | goto out_filestream_unmount; |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1560 | |
Christoph Hellwig | 4ca488e | 2007-10-11 18:09:40 +1000 | [diff] [blame] | 1561 | sb->s_magic = XFS_SB_MAGIC; |
| 1562 | sb->s_blocksize = mp->m_sb.sb_blocksize; |
| 1563 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
| 1565 | sb->s_time_gran = 1; |
| 1566 | set_posix_acl_flag(sb); |
| 1567 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 1568 | root = igrab(VFS_I(mp->m_rootip)); |
Christoph Hellwig | f3dcc13 | 2008-03-27 18:00:54 +1100 | [diff] [blame] | 1569 | if (!root) { |
Christoph Hellwig | cbc89dc | 2008-02-05 12:14:01 +1100 | [diff] [blame] | 1570 | error = ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | goto fail_unmount; |
Christoph Hellwig | cbc89dc | 2008-02-05 12:14:01 +1100 | [diff] [blame] | 1572 | } |
Christoph Hellwig | f3dcc13 | 2008-03-27 18:00:54 +1100 | [diff] [blame] | 1573 | if (is_bad_inode(root)) { |
| 1574 | error = EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | goto fail_vnrele; |
| 1576 | } |
Christoph Hellwig | f3dcc13 | 2008-03-27 18:00:54 +1100 | [diff] [blame] | 1577 | sb->s_root = d_alloc_root(root); |
| 1578 | if (!sb->s_root) { |
| 1579 | error = ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | goto fail_vnrele; |
| 1581 | } |
Christoph Hellwig | 7439449 | 2007-08-30 17:21:22 +1000 | [diff] [blame] | 1582 | |
David Chinner | a167b17 | 2008-10-30 17:06:18 +1100 | [diff] [blame] | 1583 | error = xfs_syncd_init(mp); |
| 1584 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | goto fail_vnrele; |
Christoph Hellwig | 7439449 | 2007-08-30 17:21:22 +1000 | [diff] [blame] | 1586 | |
Dave Chinner | 9bf729c | 2010-04-29 09:55:50 +1000 | [diff] [blame] | 1587 | xfs_inode_shrinker_register(mp); |
| 1588 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | return 0; |
| 1590 | |
Christoph Hellwig | 120226c | 2008-05-20 15:11:11 +1000 | [diff] [blame] | 1591 | out_filestream_unmount: |
| 1592 | xfs_filestream_unmount(mp); |
Christoph Hellwig | effa2ed | 2008-05-20 15:11:05 +1000 | [diff] [blame] | 1593 | out_free_sb: |
| 1594 | xfs_freesb(mp); |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1595 | out_destroy_counters: |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1596 | xfs_icsb_destroy_counters(mp); |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 1597 | xfs_close_devices(mp); |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1598 | out_free_fsname: |
| 1599 | xfs_free_fsname(mp); |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1600 | kfree(mp); |
Christoph Hellwig | 9d565ff | 2008-10-30 17:53:24 +1100 | [diff] [blame] | 1601 | out: |
Christoph Hellwig | c962fb7 | 2008-05-20 15:10:52 +1000 | [diff] [blame] | 1602 | return -error; |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1603 | |
| 1604 | fail_vnrele: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | if (sb->s_root) { |
| 1606 | dput(sb->s_root); |
| 1607 | sb->s_root = NULL; |
| 1608 | } else { |
Christoph Hellwig | f3dcc13 | 2008-03-27 18:00:54 +1100 | [diff] [blame] | 1609 | iput(root); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | } |
| 1611 | |
Christoph Hellwig | f8f15e4 | 2008-05-20 11:30:59 +1000 | [diff] [blame] | 1612 | fail_unmount: |
Christoph Hellwig | e48ad31 | 2008-05-20 11:30:52 +1000 | [diff] [blame] | 1613 | /* |
| 1614 | * Blow away any referenced inode in the filestreams cache. |
| 1615 | * This can and will cause log traffic as inodes go inactive |
| 1616 | * here. |
| 1617 | */ |
| 1618 | xfs_filestream_unmount(mp); |
| 1619 | |
| 1620 | XFS_bflush(mp->m_ddev_targp); |
Christoph Hellwig | e48ad31 | 2008-05-20 11:30:52 +1000 | [diff] [blame] | 1621 | |
Christoph Hellwig | 19f354d | 2008-05-20 11:31:13 +1000 | [diff] [blame] | 1622 | xfs_unmountfs(mp); |
Christoph Hellwig | 6203300 | 2008-08-13 16:50:21 +1000 | [diff] [blame] | 1623 | goto out_free_sb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | } |
| 1625 | |
David Howells | 454e239 | 2006-06-23 02:02:57 -0700 | [diff] [blame] | 1626 | STATIC int |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1627 | xfs_fs_get_sb( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | struct file_system_type *fs_type, |
| 1629 | int flags, |
| 1630 | const char *dev_name, |
David Howells | 454e239 | 2006-06-23 02:02:57 -0700 | [diff] [blame] | 1631 | void *data, |
| 1632 | struct vfsmount *mnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | { |
David Howells | 454e239 | 2006-06-23 02:02:57 -0700 | [diff] [blame] | 1634 | return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
| 1635 | mnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | } |
| 1637 | |
Alexey Dobriyan | b87221d | 2009-09-21 17:01:09 -0700 | [diff] [blame] | 1638 | static const struct super_operations xfs_super_operations = { |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1639 | .alloc_inode = xfs_fs_alloc_inode, |
| 1640 | .destroy_inode = xfs_fs_destroy_inode, |
Christoph Hellwig | f9581b1 | 2009-10-06 20:29:26 +0000 | [diff] [blame] | 1641 | .dirty_inode = xfs_fs_dirty_inode, |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1642 | .write_inode = xfs_fs_write_inode, |
| 1643 | .clear_inode = xfs_fs_clear_inode, |
| 1644 | .put_super = xfs_fs_put_super, |
Christoph Hellwig | 69961a2 | 2009-10-06 20:29:28 +0000 | [diff] [blame] | 1645 | .sync_fs = xfs_fs_sync_fs, |
Takashi Sato | c4be0c1 | 2009-01-09 16:40:58 -0800 | [diff] [blame] | 1646 | .freeze_fs = xfs_fs_freeze, |
Eric Sandeen | d5db0f9 | 2010-02-05 22:59:53 +0000 | [diff] [blame] | 1647 | .unfreeze_fs = xfs_fs_unfreeze, |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1648 | .statfs = xfs_fs_statfs, |
| 1649 | .remount_fs = xfs_fs_remount, |
| 1650 | .show_options = xfs_fs_show_options, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1651 | }; |
| 1652 | |
Andrew Morton | 5085b60 | 2007-02-20 13:57:47 -0800 | [diff] [blame] | 1653 | static struct file_system_type xfs_fs_type = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | .owner = THIS_MODULE, |
| 1655 | .name = "xfs", |
Nathan Scott | a50cd26 | 2006-03-14 14:06:18 +1100 | [diff] [blame] | 1656 | .get_sb = xfs_fs_get_sb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | .kill_sb = kill_block_super, |
| 1658 | .fs_flags = FS_REQUIRES_DEV, |
| 1659 | }; |
| 1660 | |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1661 | STATIC int __init |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1662 | xfs_init_zones(void) |
| 1663 | { |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1664 | |
| 1665 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); |
| 1666 | if (!xfs_ioend_zone) |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 1667 | goto out; |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1668 | |
| 1669 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, |
| 1670 | xfs_ioend_zone); |
| 1671 | if (!xfs_ioend_pool) |
| 1672 | goto out_destroy_ioend_zone; |
| 1673 | |
| 1674 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), |
| 1675 | "xfs_log_ticket"); |
| 1676 | if (!xfs_log_ticket_zone) |
| 1677 | goto out_destroy_ioend_pool; |
| 1678 | |
| 1679 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), |
| 1680 | "xfs_bmap_free_item"); |
| 1681 | if (!xfs_bmap_free_item_zone) |
| 1682 | goto out_destroy_log_ticket_zone; |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 1683 | |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1684 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
| 1685 | "xfs_btree_cur"); |
| 1686 | if (!xfs_btree_cur_zone) |
| 1687 | goto out_destroy_bmap_free_item_zone; |
| 1688 | |
| 1689 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), |
| 1690 | "xfs_da_state"); |
| 1691 | if (!xfs_da_state_zone) |
| 1692 | goto out_destroy_btree_cur_zone; |
| 1693 | |
| 1694 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); |
| 1695 | if (!xfs_dabuf_zone) |
| 1696 | goto out_destroy_da_state_zone; |
| 1697 | |
| 1698 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
| 1699 | if (!xfs_ifork_zone) |
| 1700 | goto out_destroy_dabuf_zone; |
| 1701 | |
| 1702 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); |
| 1703 | if (!xfs_trans_zone) |
| 1704 | goto out_destroy_ifork_zone; |
| 1705 | |
Christoph Hellwig | e98c414 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 1706 | xfs_log_item_desc_zone = |
| 1707 | kmem_zone_init(sizeof(struct xfs_log_item_desc), |
| 1708 | "xfs_log_item_desc"); |
| 1709 | if (!xfs_log_item_desc_zone) |
| 1710 | goto out_destroy_trans_zone; |
| 1711 | |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1712 | /* |
| 1713 | * The size of the zone allocated buf log item is the maximum |
| 1714 | * size possible under XFS. This wastes a little bit of memory, |
| 1715 | * but it is much faster. |
| 1716 | */ |
| 1717 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + |
Dave Chinner | c115541 | 2010-05-07 11:05:19 +1000 | [diff] [blame] | 1718 | (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1719 | NBWORD) * sizeof(int))), "xfs_buf_item"); |
| 1720 | if (!xfs_buf_item_zone) |
Christoph Hellwig | e98c414 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 1721 | goto out_destroy_log_item_desc_zone; |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1722 | |
| 1723 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + |
| 1724 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * |
| 1725 | sizeof(xfs_extent_t))), "xfs_efd_item"); |
| 1726 | if (!xfs_efd_zone) |
| 1727 | goto out_destroy_buf_item_zone; |
| 1728 | |
| 1729 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + |
| 1730 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * |
| 1731 | sizeof(xfs_extent_t))), "xfs_efi_item"); |
| 1732 | if (!xfs_efi_zone) |
| 1733 | goto out_destroy_efd_zone; |
| 1734 | |
| 1735 | xfs_inode_zone = |
| 1736 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 1737 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
| 1738 | xfs_fs_inode_init_once); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1739 | if (!xfs_inode_zone) |
| 1740 | goto out_destroy_efi_zone; |
| 1741 | |
| 1742 | xfs_ili_zone = |
| 1743 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", |
| 1744 | KM_ZONE_SPREAD, NULL); |
| 1745 | if (!xfs_ili_zone) |
| 1746 | goto out_destroy_inode_zone; |
| 1747 | |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1748 | return 0; |
| 1749 | |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1750 | out_destroy_inode_zone: |
| 1751 | kmem_zone_destroy(xfs_inode_zone); |
| 1752 | out_destroy_efi_zone: |
| 1753 | kmem_zone_destroy(xfs_efi_zone); |
| 1754 | out_destroy_efd_zone: |
| 1755 | kmem_zone_destroy(xfs_efd_zone); |
| 1756 | out_destroy_buf_item_zone: |
| 1757 | kmem_zone_destroy(xfs_buf_item_zone); |
Christoph Hellwig | e98c414 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 1758 | out_destroy_log_item_desc_zone: |
| 1759 | kmem_zone_destroy(xfs_log_item_desc_zone); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1760 | out_destroy_trans_zone: |
| 1761 | kmem_zone_destroy(xfs_trans_zone); |
| 1762 | out_destroy_ifork_zone: |
| 1763 | kmem_zone_destroy(xfs_ifork_zone); |
| 1764 | out_destroy_dabuf_zone: |
| 1765 | kmem_zone_destroy(xfs_dabuf_zone); |
| 1766 | out_destroy_da_state_zone: |
| 1767 | kmem_zone_destroy(xfs_da_state_zone); |
| 1768 | out_destroy_btree_cur_zone: |
| 1769 | kmem_zone_destroy(xfs_btree_cur_zone); |
| 1770 | out_destroy_bmap_free_item_zone: |
| 1771 | kmem_zone_destroy(xfs_bmap_free_item_zone); |
| 1772 | out_destroy_log_ticket_zone: |
| 1773 | kmem_zone_destroy(xfs_log_ticket_zone); |
| 1774 | out_destroy_ioend_pool: |
| 1775 | mempool_destroy(xfs_ioend_pool); |
| 1776 | out_destroy_ioend_zone: |
| 1777 | kmem_zone_destroy(xfs_ioend_zone); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1778 | out: |
| 1779 | return -ENOMEM; |
| 1780 | } |
| 1781 | |
| 1782 | STATIC void |
| 1783 | xfs_destroy_zones(void) |
| 1784 | { |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1785 | kmem_zone_destroy(xfs_ili_zone); |
| 1786 | kmem_zone_destroy(xfs_inode_zone); |
| 1787 | kmem_zone_destroy(xfs_efi_zone); |
| 1788 | kmem_zone_destroy(xfs_efd_zone); |
| 1789 | kmem_zone_destroy(xfs_buf_item_zone); |
Christoph Hellwig | e98c414 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 1790 | kmem_zone_destroy(xfs_log_item_desc_zone); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1791 | kmem_zone_destroy(xfs_trans_zone); |
| 1792 | kmem_zone_destroy(xfs_ifork_zone); |
| 1793 | kmem_zone_destroy(xfs_dabuf_zone); |
| 1794 | kmem_zone_destroy(xfs_da_state_zone); |
| 1795 | kmem_zone_destroy(xfs_btree_cur_zone); |
| 1796 | kmem_zone_destroy(xfs_bmap_free_item_zone); |
| 1797 | kmem_zone_destroy(xfs_log_ticket_zone); |
| 1798 | mempool_destroy(xfs_ioend_pool); |
| 1799 | kmem_zone_destroy(xfs_ioend_zone); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1800 | |
| 1801 | } |
| 1802 | |
| 1803 | STATIC int __init |
| 1804 | init_xfs_fs(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | { |
| 1806 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | |
Christoph Hellwig | 6579591 | 2008-11-28 14:23:33 +1100 | [diff] [blame] | 1808 | printk(KERN_INFO XFS_VERSION_STRING " with " |
| 1809 | XFS_BUILD_OPTIONS " enabled\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | |
Christoph Hellwig | 25e41b3 | 2008-12-03 12:20:39 +0100 | [diff] [blame] | 1811 | xfs_ioend_init(); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1812 | xfs_dir_startup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | |
Nathan Scott | 8758280 | 2006-03-14 13:18:19 +1100 | [diff] [blame] | 1814 | error = xfs_init_zones(); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1815 | if (error) |
| 1816 | goto out; |
| 1817 | |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1818 | error = xfs_mru_cache_init(); |
| 1819 | if (error) |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1820 | goto out_destroy_zones; |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1821 | |
| 1822 | error = xfs_filestream_init(); |
| 1823 | if (error) |
| 1824 | goto out_mru_cache_uninit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | |
Nathan Scott | ce8e922 | 2006-01-11 15:39:08 +1100 | [diff] [blame] | 1826 | error = xfs_buf_init(); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1827 | if (error) |
| 1828 | goto out_filestream_uninit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1830 | error = xfs_init_procfs(); |
| 1831 | if (error) |
| 1832 | goto out_buf_terminate; |
| 1833 | |
| 1834 | error = xfs_sysctl_register(); |
| 1835 | if (error) |
| 1836 | goto out_cleanup_procfs; |
| 1837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | vfs_initquota(); |
| 1839 | |
| 1840 | error = register_filesystem(&xfs_fs_type); |
| 1841 | if (error) |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1842 | goto out_sysctl_unregister; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | return 0; |
| 1844 | |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1845 | out_sysctl_unregister: |
| 1846 | xfs_sysctl_unregister(); |
| 1847 | out_cleanup_procfs: |
| 1848 | xfs_cleanup_procfs(); |
| 1849 | out_buf_terminate: |
Nathan Scott | ce8e922 | 2006-01-11 15:39:08 +1100 | [diff] [blame] | 1850 | xfs_buf_terminate(); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1851 | out_filestream_uninit: |
| 1852 | xfs_filestream_uninit(); |
| 1853 | out_mru_cache_uninit: |
| 1854 | xfs_mru_cache_uninit(); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1855 | out_destroy_zones: |
Nathan Scott | 8758280 | 2006-03-14 13:18:19 +1100 | [diff] [blame] | 1856 | xfs_destroy_zones(); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1857 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | return error; |
| 1859 | } |
| 1860 | |
| 1861 | STATIC void __exit |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1862 | exit_xfs_fs(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | { |
| 1864 | vfs_exitquota(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | unregister_filesystem(&xfs_fs_type); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1866 | xfs_sysctl_unregister(); |
| 1867 | xfs_cleanup_procfs(); |
Nathan Scott | ce8e922 | 2006-01-11 15:39:08 +1100 | [diff] [blame] | 1868 | xfs_buf_terminate(); |
Christoph Hellwig | 9f8868f | 2008-07-18 17:11:46 +1000 | [diff] [blame] | 1869 | xfs_filestream_uninit(); |
| 1870 | xfs_mru_cache_uninit(); |
Nathan Scott | 8758280 | 2006-03-14 13:18:19 +1100 | [diff] [blame] | 1871 | xfs_destroy_zones(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | } |
| 1873 | |
| 1874 | module_init(init_xfs_fs); |
| 1875 | module_exit(exit_xfs_fs); |
| 1876 | |
| 1877 | MODULE_AUTHOR("Silicon Graphics, Inc."); |
| 1878 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); |
| 1879 | MODULE_LICENSE("GPL"); |