David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/sched.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <linux/spinlock.h> |
| 13 | #include <linux/completion.h> |
| 14 | #include <linux/buffer_head.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 15 | #include <linux/blkdev.h> |
| 16 | #include <linux/kthread.h> |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 17 | #include <linux/namei.h> |
| 18 | #include <linux/mount.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 19 | #include <linux/gfs2_ondisk.h> |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 20 | #include <linux/slow-work.h> |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 21 | #include <linux/quotaops.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 22 | |
| 23 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 24 | #include "incore.h" |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 25 | #include "bmap.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 26 | #include "glock.h" |
| 27 | #include "glops.h" |
| 28 | #include "inode.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 29 | #include "recovery.h" |
| 30 | #include "rgrp.h" |
| 31 | #include "super.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 32 | #include "sys.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 33 | #include "util.h" |
Steven Whitehouse | bb3b0e3 | 2007-08-16 16:03:57 +0100 | [diff] [blame] | 34 | #include "log.h" |
Steven Whitehouse | 9ac1b4d | 2008-11-19 10:08:22 +0000 | [diff] [blame] | 35 | #include "quota.h" |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 36 | #include "dir.h" |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 37 | #include "trace_gfs2.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 38 | |
| 39 | #define DO 0 |
| 40 | #define UNDO 1 |
| 41 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 42 | static const u32 gfs2_old_fs_formats[] = { |
| 43 | 0 |
| 44 | }; |
| 45 | |
| 46 | static const u32 gfs2_old_multihost_formats[] = { |
| 47 | 0 |
| 48 | }; |
| 49 | |
| 50 | /** |
| 51 | * gfs2_tune_init - Fill a gfs2_tune structure with default values |
| 52 | * @gt: tune |
| 53 | * |
| 54 | */ |
| 55 | |
| 56 | static void gfs2_tune_init(struct gfs2_tune *gt) |
| 57 | { |
| 58 | spin_lock_init(>->gt_spin); |
| 59 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 60 | gt->gt_incore_log_blocks = 1024; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 61 | gt->gt_logd_secs = 1; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 62 | gt->gt_quota_simul_sync = 64; |
| 63 | gt->gt_quota_warn_period = 10; |
| 64 | gt->gt_quota_scale_num = 1; |
| 65 | gt->gt_quota_scale_den = 1; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 66 | gt->gt_new_files_jdata = 0; |
| 67 | gt->gt_max_readahead = 1 << 18; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 68 | gt->gt_complain_secs = 10; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 69 | } |
| 70 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 71 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
| 72 | { |
| 73 | struct gfs2_sbd *sdp; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 74 | |
Steven Whitehouse | 85d1da6 | 2006-09-07 14:40:21 -0400 | [diff] [blame] | 75 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 76 | if (!sdp) |
| 77 | return NULL; |
| 78 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 79 | sb->s_fs_info = sdp; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 80 | sdp->sd_vfs = sb; |
| 81 | |
| 82 | gfs2_tune_init(&sdp->sd_tune); |
| 83 | |
Steven Whitehouse | e402746 | 2010-01-25 11:20:19 +0000 | [diff] [blame] | 84 | init_waitqueue_head(&sdp->sd_glock_wait); |
| 85 | atomic_set(&sdp->sd_glock_disposal, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 86 | spin_lock_init(&sdp->sd_statfs_spin); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 87 | |
| 88 | spin_lock_init(&sdp->sd_rindex_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 89 | mutex_init(&sdp->sd_rindex_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 90 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
| 91 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 92 | |
| 93 | INIT_LIST_HEAD(&sdp->sd_jindex_list); |
| 94 | spin_lock_init(&sdp->sd_jindex_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 95 | mutex_init(&sdp->sd_jindex_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 96 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 97 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 98 | mutex_init(&sdp->sd_quota_mutex); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 99 | init_waitqueue_head(&sdp->sd_quota_wait); |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 100 | INIT_LIST_HEAD(&sdp->sd_trunc_list); |
| 101 | spin_lock_init(&sdp->sd_trunc_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 102 | |
| 103 | spin_lock_init(&sdp->sd_log_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 104 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 105 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); |
| 106 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); |
| 107 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); |
| 108 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); |
Steven Whitehouse | d7b616e | 2007-09-02 10:48:13 +0100 | [diff] [blame] | 109 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 110 | |
Steven Whitehouse | 71b86f5 | 2006-03-28 14:14:04 -0500 | [diff] [blame] | 111 | mutex_init(&sdp->sd_log_reserve_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 112 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
| 113 | INIT_LIST_HEAD(&sdp->sd_ail2_list); |
| 114 | |
Steven Whitehouse | 484adff | 2006-03-29 09:12:12 -0500 | [diff] [blame] | 115 | init_rwsem(&sdp->sd_log_flush_lock); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 116 | atomic_set(&sdp->sd_log_in_flight, 0); |
| 117 | init_waitqueue_head(&sdp->sd_log_flush_wait); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 118 | |
| 119 | INIT_LIST_HEAD(&sdp->sd_revoke_list); |
| 120 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 121 | mutex_init(&sdp->sd_freeze_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 122 | |
| 123 | return sdp; |
| 124 | } |
| 125 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 126 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 127 | /** |
| 128 | * gfs2_check_sb - Check superblock |
| 129 | * @sdp: the filesystem |
| 130 | * @sb: The superblock |
| 131 | * @silent: Don't print a message if the check fails |
| 132 | * |
| 133 | * Checks the version code of the FS is one that we understand how to |
| 134 | * read and that the sizes of the various on-disk structures have not |
| 135 | * changed. |
| 136 | */ |
| 137 | |
| 138 | static int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent) |
| 139 | { |
| 140 | unsigned int x; |
| 141 | |
| 142 | if (sb->sb_magic != GFS2_MAGIC || |
| 143 | sb->sb_type != GFS2_METATYPE_SB) { |
| 144 | if (!silent) |
| 145 | printk(KERN_WARNING "GFS2: not a GFS2 filesystem\n"); |
| 146 | return -EINVAL; |
| 147 | } |
| 148 | |
| 149 | /* If format numbers match exactly, we're done. */ |
| 150 | |
| 151 | if (sb->sb_fs_format == GFS2_FORMAT_FS && |
| 152 | sb->sb_multihost_format == GFS2_FORMAT_MULTI) |
| 153 | return 0; |
| 154 | |
| 155 | if (sb->sb_fs_format != GFS2_FORMAT_FS) { |
| 156 | for (x = 0; gfs2_old_fs_formats[x]; x++) |
| 157 | if (gfs2_old_fs_formats[x] == sb->sb_fs_format) |
| 158 | break; |
| 159 | |
| 160 | if (!gfs2_old_fs_formats[x]) { |
| 161 | printk(KERN_WARNING |
| 162 | "GFS2: code version (%u, %u) is incompatible " |
| 163 | "with ondisk format (%u, %u)\n", |
| 164 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, |
| 165 | sb->sb_fs_format, sb->sb_multihost_format); |
| 166 | printk(KERN_WARNING |
| 167 | "GFS2: I don't know how to upgrade this FS\n"); |
| 168 | return -EINVAL; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | if (sb->sb_multihost_format != GFS2_FORMAT_MULTI) { |
| 173 | for (x = 0; gfs2_old_multihost_formats[x]; x++) |
| 174 | if (gfs2_old_multihost_formats[x] == |
| 175 | sb->sb_multihost_format) |
| 176 | break; |
| 177 | |
| 178 | if (!gfs2_old_multihost_formats[x]) { |
| 179 | printk(KERN_WARNING |
| 180 | "GFS2: code version (%u, %u) is incompatible " |
| 181 | "with ondisk format (%u, %u)\n", |
| 182 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, |
| 183 | sb->sb_fs_format, sb->sb_multihost_format); |
| 184 | printk(KERN_WARNING |
| 185 | "GFS2: I don't know how to upgrade this FS\n"); |
| 186 | return -EINVAL; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | if (!sdp->sd_args.ar_upgrade) { |
| 191 | printk(KERN_WARNING |
| 192 | "GFS2: code version (%u, %u) is incompatible " |
| 193 | "with ondisk format (%u, %u)\n", |
| 194 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, |
| 195 | sb->sb_fs_format, sb->sb_multihost_format); |
| 196 | printk(KERN_INFO |
| 197 | "GFS2: Use the \"upgrade\" mount option to upgrade " |
| 198 | "the FS\n"); |
| 199 | printk(KERN_INFO "GFS2: See the manual for more details\n"); |
| 200 | return -EINVAL; |
| 201 | } |
| 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | static void end_bio_io_page(struct bio *bio, int error) |
| 207 | { |
| 208 | struct page *page = bio->bi_private; |
| 209 | |
| 210 | if (!error) |
| 211 | SetPageUptodate(page); |
| 212 | else |
| 213 | printk(KERN_WARNING "gfs2: error %d reading superblock\n", error); |
| 214 | unlock_page(page); |
| 215 | } |
| 216 | |
| 217 | static void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) |
| 218 | { |
| 219 | const struct gfs2_sb *str = buf; |
| 220 | |
| 221 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); |
| 222 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); |
| 223 | sb->sb_format = be32_to_cpu(str->sb_header.mh_format); |
| 224 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); |
| 225 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); |
| 226 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); |
| 227 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); |
| 228 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); |
| 229 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); |
| 230 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); |
| 231 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); |
| 232 | |
| 233 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); |
| 234 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); |
Steven Whitehouse | 02e3cc7 | 2009-02-10 13:48:30 +0000 | [diff] [blame] | 235 | memcpy(sb->sb_uuid, str->sb_uuid, 16); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | /** |
| 239 | * gfs2_read_super - Read the gfs2 super block from disk |
| 240 | * @sdp: The GFS2 super block |
| 241 | * @sector: The location of the super block |
| 242 | * @error: The error code to return |
| 243 | * |
| 244 | * This uses the bio functions to read the super block from disk |
| 245 | * because we want to be 100% sure that we never read cached data. |
| 246 | * A super block is read twice only during each GFS2 mount and is |
| 247 | * never written to by the filesystem. The first time its read no |
| 248 | * locks are held, and the only details which are looked at are those |
| 249 | * relating to the locking protocol. Once locking is up and working, |
| 250 | * the sb is read again under the lock to establish the location of |
| 251 | * the master directory (contains pointers to journals etc) and the |
| 252 | * root directory. |
| 253 | * |
| 254 | * Returns: 0 on success or error |
| 255 | */ |
| 256 | |
| 257 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector) |
| 258 | { |
| 259 | struct super_block *sb = sdp->sd_vfs; |
| 260 | struct gfs2_sb *p; |
| 261 | struct page *page; |
| 262 | struct bio *bio; |
| 263 | |
| 264 | page = alloc_page(GFP_NOFS); |
| 265 | if (unlikely(!page)) |
| 266 | return -ENOBUFS; |
| 267 | |
| 268 | ClearPageUptodate(page); |
| 269 | ClearPageDirty(page); |
| 270 | lock_page(page); |
| 271 | |
| 272 | bio = bio_alloc(GFP_NOFS, 1); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 273 | bio->bi_sector = sector * (sb->s_blocksize >> 9); |
| 274 | bio->bi_bdev = sb->s_bdev; |
| 275 | bio_add_page(bio, page, PAGE_SIZE, 0); |
| 276 | |
| 277 | bio->bi_end_io = end_bio_io_page; |
| 278 | bio->bi_private = page; |
| 279 | submit_bio(READ_SYNC | (1 << BIO_RW_META), bio); |
| 280 | wait_on_page_locked(page); |
| 281 | bio_put(bio); |
| 282 | if (!PageUptodate(page)) { |
| 283 | __free_page(page); |
| 284 | return -EIO; |
| 285 | } |
| 286 | p = kmap(page); |
| 287 | gfs2_sb_in(&sdp->sd_sb, p); |
| 288 | kunmap(page); |
| 289 | __free_page(page); |
| 290 | return 0; |
| 291 | } |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 292 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 293 | /** |
| 294 | * gfs2_read_sb - Read super block |
| 295 | * @sdp: The GFS2 superblock |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 296 | * @silent: Don't print message if mount fails |
| 297 | * |
| 298 | */ |
| 299 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 300 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 301 | { |
| 302 | u32 hash_blocks, ind_blocks, leaf_blocks; |
| 303 | u32 tmp_blocks; |
| 304 | unsigned int x; |
| 305 | int error; |
| 306 | |
| 307 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
| 308 | if (error) { |
| 309 | if (!silent) |
| 310 | fs_err(sdp, "can't read superblock\n"); |
| 311 | return error; |
| 312 | } |
| 313 | |
| 314 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); |
| 315 | if (error) |
| 316 | return error; |
| 317 | |
| 318 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
| 319 | GFS2_BASIC_BLOCK_SHIFT; |
| 320 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; |
| 321 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - |
| 322 | sizeof(struct gfs2_dinode)) / sizeof(u64); |
| 323 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - |
| 324 | sizeof(struct gfs2_meta_header)) / sizeof(u64); |
| 325 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); |
| 326 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; |
| 327 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; |
| 328 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); |
| 329 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - |
| 330 | sizeof(struct gfs2_meta_header)) / |
| 331 | sizeof(struct gfs2_quota_change); |
| 332 | |
| 333 | /* Compute maximum reservation required to add a entry to a directory */ |
| 334 | |
| 335 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH), |
| 336 | sdp->sd_jbsize); |
| 337 | |
| 338 | ind_blocks = 0; |
| 339 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { |
| 340 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); |
| 341 | ind_blocks += tmp_blocks; |
| 342 | } |
| 343 | |
| 344 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; |
| 345 | |
| 346 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; |
| 347 | |
| 348 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - |
| 349 | sizeof(struct gfs2_dinode); |
| 350 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; |
| 351 | for (x = 2;; x++) { |
| 352 | u64 space, d; |
| 353 | u32 m; |
| 354 | |
| 355 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; |
| 356 | d = space; |
| 357 | m = do_div(d, sdp->sd_inptrs); |
| 358 | |
| 359 | if (d != sdp->sd_heightsize[x - 1] || m) |
| 360 | break; |
| 361 | sdp->sd_heightsize[x] = space; |
| 362 | } |
| 363 | sdp->sd_max_height = x; |
| 364 | sdp->sd_heightsize[x] = ~0; |
| 365 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); |
| 366 | |
| 367 | sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize - |
| 368 | sizeof(struct gfs2_dinode); |
| 369 | sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs; |
| 370 | for (x = 2;; x++) { |
| 371 | u64 space, d; |
| 372 | u32 m; |
| 373 | |
| 374 | space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs; |
| 375 | d = space; |
| 376 | m = do_div(d, sdp->sd_inptrs); |
| 377 | |
| 378 | if (d != sdp->sd_jheightsize[x - 1] || m) |
| 379 | break; |
| 380 | sdp->sd_jheightsize[x] = space; |
| 381 | } |
| 382 | sdp->sd_max_jheight = x; |
| 383 | sdp->sd_jheightsize[x] = ~0; |
| 384 | gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT); |
| 385 | |
| 386 | return 0; |
| 387 | } |
| 388 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 389 | static int init_names(struct gfs2_sbd *sdp, int silent) |
| 390 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 391 | char *proto, *table; |
| 392 | int error = 0; |
| 393 | |
| 394 | proto = sdp->sd_args.ar_lockproto; |
| 395 | table = sdp->sd_args.ar_locktable; |
| 396 | |
| 397 | /* Try to autodetect */ |
| 398 | |
| 399 | if (!proto[0] || !table[0]) { |
Steven Whitehouse | bb8d8a6 | 2007-06-01 14:11:58 +0100 | [diff] [blame] | 400 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
| 401 | if (error) |
| 402 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 403 | |
Steven Whitehouse | 3cf1e7b | 2006-10-02 11:49:41 -0400 | [diff] [blame] | 404 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 405 | if (error) |
| 406 | goto out; |
| 407 | |
| 408 | if (!proto[0]) |
Steven Whitehouse | 3cf1e7b | 2006-10-02 11:49:41 -0400 | [diff] [blame] | 409 | proto = sdp->sd_sb.sb_lockproto; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 410 | if (!table[0]) |
Steven Whitehouse | 3cf1e7b | 2006-10-02 11:49:41 -0400 | [diff] [blame] | 411 | table = sdp->sd_sb.sb_locktable; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | if (!table[0]) |
| 415 | table = sdp->sd_vfs->s_id; |
| 416 | |
Jean Delvare | 00377d8 | 2008-05-09 17:59:51 +0200 | [diff] [blame] | 417 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
| 418 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 419 | |
Denis Cheng | 5d35e31 | 2007-08-13 11:01:58 +0800 | [diff] [blame] | 420 | table = sdp->sd_table_name; |
| 421 | while ((table = strchr(table, '/'))) |
Robert Peterson | b35997d | 2007-06-07 09:10:01 -0500 | [diff] [blame] | 422 | *table = '_'; |
| 423 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 424 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 425 | return error; |
| 426 | } |
| 427 | |
| 428 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, |
| 429 | int undo) |
| 430 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 431 | int error = 0; |
| 432 | |
| 433 | if (undo) |
| 434 | goto fail_trans; |
| 435 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 436 | error = gfs2_glock_nq_num(sdp, |
| 437 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, |
| 438 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, |
| 439 | mount_gh); |
| 440 | if (error) { |
| 441 | fs_err(sdp, "can't acquire mount glock: %d\n", error); |
| 442 | goto fail; |
| 443 | } |
| 444 | |
| 445 | error = gfs2_glock_nq_num(sdp, |
| 446 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, |
| 447 | LM_ST_SHARED, |
Steven Whitehouse | 579b78a | 2006-04-26 14:58:26 -0400 | [diff] [blame] | 448 | LM_FLAG_NOEXP | GL_EXACT, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 449 | &sdp->sd_live_gh); |
| 450 | if (error) { |
| 451 | fs_err(sdp, "can't acquire live glock: %d\n", error); |
| 452 | goto fail_mount; |
| 453 | } |
| 454 | |
| 455 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, |
| 456 | CREATE, &sdp->sd_rename_gl); |
| 457 | if (error) { |
| 458 | fs_err(sdp, "can't create rename glock: %d\n", error); |
| 459 | goto fail_live; |
| 460 | } |
| 461 | |
| 462 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, |
| 463 | CREATE, &sdp->sd_trans_gl); |
| 464 | if (error) { |
| 465 | fs_err(sdp, "can't create transaction glock: %d\n", error); |
| 466 | goto fail_rename; |
| 467 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 468 | |
| 469 | return 0; |
| 470 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 471 | fail_trans: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 472 | gfs2_glock_put(sdp->sd_trans_gl); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 473 | fail_rename: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 474 | gfs2_glock_put(sdp->sd_rename_gl); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 475 | fail_live: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 476 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 477 | fail_mount: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 478 | gfs2_glock_dq_uninit(mount_gh); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 479 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 480 | return error; |
| 481 | } |
| 482 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 483 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
| 484 | u64 no_addr, const char *name) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 485 | { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 486 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 487 | struct dentry *dentry; |
| 488 | struct inode *inode; |
| 489 | |
Bob Peterson | 1a0eae8 | 2010-04-14 11:58:16 -0400 | [diff] [blame^] | 490 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 491 | if (IS_ERR(inode)) { |
| 492 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); |
| 493 | return PTR_ERR(inode); |
| 494 | } |
| 495 | dentry = d_alloc_root(inode); |
| 496 | if (!dentry) { |
| 497 | fs_err(sdp, "can't alloc %s dentry\n", name); |
| 498 | iput(inode); |
| 499 | return -ENOMEM; |
| 500 | } |
| 501 | dentry->d_op = &gfs2_dops; |
| 502 | *dptr = dentry; |
| 503 | return 0; |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 504 | } |
| 505 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 506 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 507 | { |
| 508 | struct super_block *sb = sdp->sd_vfs; |
| 509 | struct gfs2_holder sb_gh; |
Steven Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 510 | u64 no_addr; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 511 | int ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 512 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 513 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
| 514 | LM_ST_SHARED, 0, &sb_gh); |
| 515 | if (ret) { |
| 516 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); |
| 517 | return ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 518 | } |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 519 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 520 | ret = gfs2_read_sb(sdp, silent); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 521 | if (ret) { |
| 522 | fs_err(sdp, "can't read superblock: %d\n", ret); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 523 | goto out; |
| 524 | } |
| 525 | |
| 526 | /* Set up the buffer cache and SB for real */ |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 527 | if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 528 | ret = -EINVAL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 529 | fs_err(sdp, "FS block size (%u) is too small for device " |
| 530 | "block size (%u)\n", |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 531 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 532 | goto out; |
| 533 | } |
| 534 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 535 | ret = -EINVAL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 536 | fs_err(sdp, "FS block size (%u) is too big for machine " |
| 537 | "page size (%u)\n", |
| 538 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); |
| 539 | goto out; |
| 540 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 541 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
| 542 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 543 | /* Get the root inode */ |
Steven Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 544 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 545 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
| 546 | if (ret) |
| 547 | goto out; |
| 548 | |
| 549 | /* Get the master inode */ |
| 550 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; |
| 551 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); |
| 552 | if (ret) { |
| 553 | dput(sdp->sd_root_dir); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 554 | goto out; |
| 555 | } |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 556 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 557 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 558 | gfs2_glock_dq_uninit(&sb_gh); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 559 | return ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 560 | } |
| 561 | |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 562 | /** |
| 563 | * map_journal_extents - create a reusable "extent" mapping from all logical |
| 564 | * blocks to all physical blocks for the given journal. This will save |
| 565 | * us time when writing journal blocks. Most journals will have only one |
| 566 | * extent that maps all their logical blocks. That's because gfs2.mkfs |
| 567 | * arranges the journal blocks sequentially to maximize performance. |
| 568 | * So the extent would map the first block for the entire file length. |
| 569 | * However, gfs2_jadd can happen while file activity is happening, so |
| 570 | * those journals may not be sequential. Less likely is the case where |
| 571 | * the users created their own journals by mounting the metafs and |
| 572 | * laying it out. But it's still possible. These journals might have |
| 573 | * several extents. |
| 574 | * |
| 575 | * TODO: This should be done in bigger chunks rather than one block at a time, |
| 576 | * but since it's only done at mount time, I'm not worried about the |
| 577 | * time it takes. |
| 578 | */ |
| 579 | static int map_journal_extents(struct gfs2_sbd *sdp) |
| 580 | { |
| 581 | struct gfs2_jdesc *jd = sdp->sd_jdesc; |
| 582 | unsigned int lb; |
| 583 | u64 db, prev_db; /* logical block, disk block, prev disk block */ |
| 584 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 585 | struct gfs2_journal_extent *jext = NULL; |
| 586 | struct buffer_head bh; |
| 587 | int rc = 0; |
| 588 | |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 589 | prev_db = 0; |
| 590 | |
Steven Whitehouse | c9e9888 | 2008-11-04 09:47:33 +0000 | [diff] [blame] | 591 | for (lb = 0; lb < ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; lb++) { |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 592 | bh.b_state = 0; |
| 593 | bh.b_blocknr = 0; |
| 594 | bh.b_size = 1 << ip->i_inode.i_blkbits; |
| 595 | rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0); |
| 596 | db = bh.b_blocknr; |
| 597 | if (rc || !db) { |
| 598 | printk(KERN_INFO "GFS2 journal mapping error %d: lb=" |
| 599 | "%u db=%llu\n", rc, lb, (unsigned long long)db); |
| 600 | break; |
| 601 | } |
| 602 | if (!prev_db || db != prev_db + 1) { |
| 603 | jext = kzalloc(sizeof(struct gfs2_journal_extent), |
| 604 | GFP_KERNEL); |
| 605 | if (!jext) { |
| 606 | printk(KERN_INFO "GFS2 error: out of memory " |
| 607 | "mapping journal extents.\n"); |
| 608 | rc = -ENOMEM; |
| 609 | break; |
| 610 | } |
| 611 | jext->dblock = db; |
| 612 | jext->lblock = lb; |
| 613 | jext->blocks = 1; |
| 614 | list_add_tail(&jext->extent_list, &jd->extent_list); |
| 615 | } else { |
| 616 | jext->blocks++; |
| 617 | } |
| 618 | prev_db = db; |
| 619 | } |
| 620 | return rc; |
| 621 | } |
| 622 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 623 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 624 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 625 | char *message = "FIRSTMOUNT=Done"; |
| 626 | char *envp[] = { message, NULL }; |
| 627 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 628 | ls->ls_first_done = 1; |
| 629 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 630 | } |
| 631 | |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 632 | /** |
| 633 | * gfs2_jindex_hold - Grab a lock on the jindex |
| 634 | * @sdp: The GFS2 superblock |
| 635 | * @ji_gh: the holder for the jindex glock |
| 636 | * |
| 637 | * Returns: errno |
| 638 | */ |
| 639 | |
| 640 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) |
| 641 | { |
| 642 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); |
| 643 | struct qstr name; |
| 644 | char buf[20]; |
| 645 | struct gfs2_jdesc *jd; |
| 646 | int error; |
| 647 | |
| 648 | name.name = buf; |
| 649 | |
| 650 | mutex_lock(&sdp->sd_jindex_mutex); |
| 651 | |
| 652 | for (;;) { |
| 653 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); |
| 654 | if (error) |
| 655 | break; |
| 656 | |
| 657 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); |
| 658 | name.hash = gfs2_disk_hash(name.name, name.len); |
| 659 | |
| 660 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); |
| 661 | if (error == -ENOENT) { |
| 662 | error = 0; |
| 663 | break; |
| 664 | } |
| 665 | |
| 666 | gfs2_glock_dq_uninit(ji_gh); |
| 667 | |
| 668 | if (error) |
| 669 | break; |
| 670 | |
| 671 | error = -ENOMEM; |
| 672 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); |
| 673 | if (!jd) |
| 674 | break; |
| 675 | |
| 676 | INIT_LIST_HEAD(&jd->extent_list); |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 677 | slow_work_init(&jd->jd_work, &gfs2_recover_ops); |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 678 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
| 679 | if (!jd->jd_inode || IS_ERR(jd->jd_inode)) { |
| 680 | if (!jd->jd_inode) |
| 681 | error = -ENOENT; |
| 682 | else |
| 683 | error = PTR_ERR(jd->jd_inode); |
| 684 | kfree(jd); |
| 685 | break; |
| 686 | } |
| 687 | |
| 688 | spin_lock(&sdp->sd_jindex_spin); |
| 689 | jd->jd_jid = sdp->sd_journals++; |
| 690 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); |
| 691 | spin_unlock(&sdp->sd_jindex_spin); |
| 692 | } |
| 693 | |
| 694 | mutex_unlock(&sdp->sd_jindex_mutex); |
| 695 | |
| 696 | return error; |
| 697 | } |
| 698 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 699 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
| 700 | { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 701 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 702 | struct gfs2_holder ji_gh; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 703 | struct gfs2_inode *ip; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 704 | int jindex = 1; |
| 705 | int error = 0; |
| 706 | |
| 707 | if (undo) { |
| 708 | jindex = 0; |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 709 | goto fail_jinode_gh; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 710 | } |
| 711 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 712 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 713 | if (IS_ERR(sdp->sd_jindex)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 714 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 715 | return PTR_ERR(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 716 | } |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 717 | ip = GFS2_I(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 718 | |
| 719 | /* Load in the journal index special file */ |
| 720 | |
| 721 | error = gfs2_jindex_hold(sdp, &ji_gh); |
| 722 | if (error) { |
| 723 | fs_err(sdp, "can't read journal index: %d\n", error); |
| 724 | goto fail; |
| 725 | } |
| 726 | |
Abhijith Das | 0e5a9fb | 2010-02-05 18:25:41 -0500 | [diff] [blame] | 727 | error = -EUSERS; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 728 | if (!gfs2_jindex_size(sdp)) { |
| 729 | fs_err(sdp, "no journals!\n"); |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 730 | goto fail_jindex; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | if (sdp->sd_args.ar_spectator) { |
| 734 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); |
Steven Whitehouse | fd041f0 | 2007-11-08 14:55:03 +0000 | [diff] [blame] | 735 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 736 | } else { |
| 737 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { |
| 738 | fs_err(sdp, "can't mount journal #%u\n", |
| 739 | sdp->sd_lockstruct.ls_jid); |
| 740 | fs_err(sdp, "there are only %u journals (0 - %u)\n", |
| 741 | gfs2_jindex_size(sdp), |
| 742 | gfs2_jindex_size(sdp) - 1); |
| 743 | goto fail_jindex; |
| 744 | } |
| 745 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); |
| 746 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 747 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 748 | &gfs2_journal_glops, |
| 749 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, |
| 750 | &sdp->sd_journal_gh); |
| 751 | if (error) { |
| 752 | fs_err(sdp, "can't acquire journal glock: %d\n", error); |
| 753 | goto fail_jindex; |
| 754 | } |
| 755 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 756 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
| 757 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, |
Bob Peterson | 75be73a | 2007-08-08 17:08:14 -0500 | [diff] [blame] | 758 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 759 | &sdp->sd_jinode_gh); |
| 760 | if (error) { |
| 761 | fs_err(sdp, "can't acquire journal inode glock: %d\n", |
| 762 | error); |
| 763 | goto fail_journal_gh; |
| 764 | } |
| 765 | |
| 766 | error = gfs2_jdesc_check(sdp->sd_jdesc); |
| 767 | if (error) { |
| 768 | fs_err(sdp, "my journal (%u) is bad: %d\n", |
| 769 | sdp->sd_jdesc->jd_jid, error); |
| 770 | goto fail_jinode_gh; |
| 771 | } |
Steven Whitehouse | fd041f0 | 2007-11-08 14:55:03 +0000 | [diff] [blame] | 772 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 773 | |
| 774 | /* Map the extents for this journal's blocks */ |
| 775 | map_journal_extents(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 776 | } |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 777 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 778 | |
| 779 | if (sdp->sd_lockstruct.ls_first) { |
| 780 | unsigned int x; |
| 781 | for (x = 0; x < sdp->sd_journals; x++) { |
David Teigland | c63e31c | 2006-04-20 17:03:48 -0400 | [diff] [blame] | 782 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 783 | if (error) { |
| 784 | fs_err(sdp, "error recovering journal %u: %d\n", |
| 785 | x, error); |
| 786 | goto fail_jinode_gh; |
| 787 | } |
| 788 | } |
| 789 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 790 | gfs2_others_may_mount(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 791 | } else if (!sdp->sd_args.ar_spectator) { |
David Teigland | c63e31c | 2006-04-20 17:03:48 -0400 | [diff] [blame] | 792 | error = gfs2_recover_journal(sdp->sd_jdesc); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 793 | if (error) { |
| 794 | fs_err(sdp, "error recovering my journal: %d\n", error); |
| 795 | goto fail_jinode_gh; |
| 796 | } |
| 797 | } |
| 798 | |
| 799 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
| 800 | gfs2_glock_dq_uninit(&ji_gh); |
| 801 | jindex = 0; |
| 802 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 803 | return 0; |
| 804 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 805 | fail_jinode_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 806 | if (!sdp->sd_args.ar_spectator) |
| 807 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 808 | fail_journal_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 809 | if (!sdp->sd_args.ar_spectator) |
| 810 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 811 | fail_jindex: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 812 | gfs2_jindex_free(sdp); |
| 813 | if (jindex) |
| 814 | gfs2_glock_dq_uninit(&ji_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 815 | fail: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 816 | iput(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 817 | return error; |
| 818 | } |
| 819 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 820 | |
| 821 | static int init_inodes(struct gfs2_sbd *sdp, int undo) |
| 822 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 823 | int error = 0; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 824 | struct gfs2_inode *ip; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 825 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 826 | |
| 827 | if (undo) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 828 | goto fail_qinode; |
| 829 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 830 | error = init_journal(sdp, undo); |
| 831 | if (error) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 832 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 833 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 834 | /* Read in the master statfs inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 835 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 836 | if (IS_ERR(sdp->sd_statfs_inode)) { |
| 837 | error = PTR_ERR(sdp->sd_statfs_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 838 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 839 | goto fail_journal; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 840 | } |
| 841 | |
| 842 | /* Read in the resource index inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 843 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 844 | if (IS_ERR(sdp->sd_rindex)) { |
| 845 | error = PTR_ERR(sdp->sd_rindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 846 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
| 847 | goto fail_statfs; |
| 848 | } |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 849 | ip = GFS2_I(sdp->sd_rindex); |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 850 | sdp->sd_rindex_uptodate = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 851 | |
| 852 | /* Read in the quota inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 853 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 854 | if (IS_ERR(sdp->sd_quota_inode)) { |
| 855 | error = PTR_ERR(sdp->sd_quota_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 856 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
| 857 | goto fail_rindex; |
| 858 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 859 | return 0; |
| 860 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 861 | fail_qinode: |
| 862 | iput(sdp->sd_quota_inode); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 863 | fail_rindex: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 864 | gfs2_clear_rgrpd(sdp); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 865 | iput(sdp->sd_rindex); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 866 | fail_statfs: |
| 867 | iput(sdp->sd_statfs_inode); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 868 | fail_journal: |
| 869 | init_journal(sdp, UNDO); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 870 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 871 | return error; |
| 872 | } |
| 873 | |
| 874 | static int init_per_node(struct gfs2_sbd *sdp, int undo) |
| 875 | { |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 876 | struct inode *pn = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 877 | char buf[30]; |
| 878 | int error = 0; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 879 | struct gfs2_inode *ip; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 880 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 881 | |
| 882 | if (sdp->sd_args.ar_spectator) |
| 883 | return 0; |
| 884 | |
| 885 | if (undo) |
| 886 | goto fail_qc_gh; |
| 887 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 888 | pn = gfs2_lookup_simple(master, "per_node"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 889 | if (IS_ERR(pn)) { |
| 890 | error = PTR_ERR(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 891 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
| 892 | return error; |
| 893 | } |
| 894 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 895 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 896 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
| 897 | if (IS_ERR(sdp->sd_sc_inode)) { |
| 898 | error = PTR_ERR(sdp->sd_sc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 899 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 900 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 901 | } |
| 902 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 903 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 904 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
| 905 | if (IS_ERR(sdp->sd_qc_inode)) { |
| 906 | error = PTR_ERR(sdp->sd_qc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 907 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
| 908 | goto fail_ut_i; |
| 909 | } |
| 910 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 911 | iput(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 912 | pn = NULL; |
| 913 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 914 | ip = GFS2_I(sdp->sd_sc_inode); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 915 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 916 | &sdp->sd_sc_gh); |
| 917 | if (error) { |
| 918 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 919 | goto fail_qc_i; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 920 | } |
| 921 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 922 | ip = GFS2_I(sdp->sd_qc_inode); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 923 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 924 | &sdp->sd_qc_gh); |
| 925 | if (error) { |
| 926 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); |
| 927 | goto fail_ut_gh; |
| 928 | } |
| 929 | |
| 930 | return 0; |
| 931 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 932 | fail_qc_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 933 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 934 | fail_ut_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 935 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 936 | fail_qc_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 937 | iput(sdp->sd_qc_inode); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 938 | fail_ut_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 939 | iput(sdp->sd_sc_inode); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 940 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 941 | if (pn) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 942 | iput(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 943 | return error; |
| 944 | } |
| 945 | |
| 946 | static int init_threads(struct gfs2_sbd *sdp, int undo) |
| 947 | { |
| 948 | struct task_struct *p; |
| 949 | int error = 0; |
| 950 | |
| 951 | if (undo) |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 952 | goto fail_quotad; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 953 | |
| 954 | sdp->sd_log_flush_time = jiffies; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 955 | |
| 956 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); |
| 957 | error = IS_ERR(p); |
| 958 | if (error) { |
| 959 | fs_err(sdp, "can't start logd thread: %d\n", error); |
| 960 | return error; |
| 961 | } |
| 962 | sdp->sd_logd_process = p; |
| 963 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 964 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); |
| 965 | error = IS_ERR(p); |
| 966 | if (error) { |
| 967 | fs_err(sdp, "can't start quotad thread: %d\n", error); |
| 968 | goto fail; |
| 969 | } |
| 970 | sdp->sd_quotad_process = p; |
| 971 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 972 | return 0; |
| 973 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 974 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 975 | fail_quotad: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 976 | kthread_stop(sdp->sd_quotad_process); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 977 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 978 | kthread_stop(sdp->sd_logd_process); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 979 | return error; |
| 980 | } |
| 981 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 982 | static const match_table_t nolock_tokens = { |
| 983 | { Opt_jid, "jid=%d\n", }, |
| 984 | { Opt_err, NULL }, |
| 985 | }; |
| 986 | |
Steven Whitehouse | 8f05228 | 2010-01-29 15:21:27 +0000 | [diff] [blame] | 987 | static void nolock_put_lock(struct kmem_cache *cachep, struct gfs2_glock *gl) |
| 988 | { |
| 989 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 990 | kmem_cache_free(cachep, gl); |
| 991 | if (atomic_dec_and_test(&sdp->sd_glock_disposal)) |
| 992 | wake_up(&sdp->sd_glock_wait); |
| 993 | } |
| 994 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 995 | static const struct lm_lockops nolock_ops = { |
| 996 | .lm_proto_name = "lock_nolock", |
Steven Whitehouse | 8f05228 | 2010-01-29 15:21:27 +0000 | [diff] [blame] | 997 | .lm_put_lock = nolock_put_lock, |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 998 | .lm_tokens = &nolock_tokens, |
| 999 | }; |
| 1000 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1001 | /** |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1002 | * gfs2_lm_mount - mount a locking protocol |
| 1003 | * @sdp: the filesystem |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 1004 | * @args: mount arguments |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1005 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
| 1006 | * |
| 1007 | * Returns: errno |
| 1008 | */ |
| 1009 | |
| 1010 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) |
| 1011 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1012 | const struct lm_lockops *lm; |
| 1013 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 1014 | struct gfs2_args *args = &sdp->sd_args; |
| 1015 | const char *proto = sdp->sd_proto_name; |
| 1016 | const char *table = sdp->sd_table_name; |
| 1017 | const char *fsname; |
| 1018 | char *o, *options; |
| 1019 | int ret; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1020 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1021 | if (!strcmp("lock_nolock", proto)) { |
| 1022 | lm = &nolock_ops; |
| 1023 | sdp->sd_args.ar_localflocks = 1; |
| 1024 | sdp->sd_args.ar_localcaching = 1; |
| 1025 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
| 1026 | } else if (!strcmp("lock_dlm", proto)) { |
| 1027 | lm = &gfs2_dlm_ops; |
| 1028 | #endif |
| 1029 | } else { |
| 1030 | printk(KERN_INFO "GFS2: can't find protocol %s\n", proto); |
| 1031 | return -ENOENT; |
| 1032 | } |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1033 | |
| 1034 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); |
| 1035 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1036 | ls->ls_ops = lm; |
| 1037 | ls->ls_first = 1; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1038 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1039 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
| 1040 | substring_t tmp[MAX_OPT_ARGS]; |
| 1041 | int token, option; |
| 1042 | |
| 1043 | if (!o || !*o) |
| 1044 | continue; |
| 1045 | |
| 1046 | token = match_token(o, *lm->lm_tokens, tmp); |
| 1047 | switch (token) { |
| 1048 | case Opt_jid: |
| 1049 | ret = match_int(&tmp[0], &option); |
| 1050 | if (ret || option < 0) |
| 1051 | goto hostdata_error; |
| 1052 | ls->ls_jid = option; |
| 1053 | break; |
| 1054 | case Opt_id: |
Steven Whitehouse | 2b88f7c | 2009-09-09 15:59:35 +0100 | [diff] [blame] | 1055 | /* Obsolete, but left for backward compat purposes */ |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1056 | break; |
| 1057 | case Opt_first: |
| 1058 | ret = match_int(&tmp[0], &option); |
| 1059 | if (ret || (option != 0 && option != 1)) |
| 1060 | goto hostdata_error; |
| 1061 | ls->ls_first = option; |
| 1062 | break; |
| 1063 | case Opt_nodir: |
| 1064 | ret = match_int(&tmp[0], &option); |
| 1065 | if (ret || (option != 0 && option != 1)) |
| 1066 | goto hostdata_error; |
| 1067 | ls->ls_nodir = option; |
| 1068 | break; |
| 1069 | case Opt_err: |
| 1070 | default: |
| 1071 | hostdata_error: |
| 1072 | fs_info(sdp, "unknown hostdata (%s)\n", o); |
| 1073 | return -EINVAL; |
| 1074 | } |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1075 | } |
| 1076 | |
| 1077 | if (sdp->sd_args.ar_spectator) |
| 1078 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", table); |
| 1079 | else |
| 1080 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", table, |
| 1081 | sdp->sd_lockstruct.ls_jid); |
| 1082 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1083 | fsname = strchr(table, ':'); |
| 1084 | if (fsname) |
| 1085 | fsname++; |
| 1086 | if (lm->lm_mount == NULL) { |
| 1087 | fs_info(sdp, "Now mounting FS...\n"); |
| 1088 | return 0; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1089 | } |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1090 | ret = lm->lm_mount(sdp, fsname); |
| 1091 | if (ret == 0) |
| 1092 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); |
| 1093 | return ret; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1094 | } |
| 1095 | |
| 1096 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) |
| 1097 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1098 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
| 1099 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) && |
| 1100 | lm->lm_unmount) |
| 1101 | lm->lm_unmount(sdp); |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1102 | } |
| 1103 | |
Steven Whitehouse | 8633ecf | 2009-07-31 11:07:29 +0100 | [diff] [blame] | 1104 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
| 1105 | { |
| 1106 | struct super_block *sb = sdp->sd_vfs; |
| 1107 | char ro[20]; |
| 1108 | char spectator[20]; |
| 1109 | char *envp[] = { ro, spectator, NULL }; |
| 1110 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); |
| 1111 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
| 1112 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); |
| 1113 | } |
| 1114 | |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1115 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1116 | * fill_super - Read in superblock |
| 1117 | * @sb: The VFS superblock |
| 1118 | * @data: Mount options |
| 1119 | * @silent: Don't complain if it's not a GFS2 filesystem |
| 1120 | * |
| 1121 | * Returns: errno |
| 1122 | */ |
| 1123 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1124 | static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1125 | { |
| 1126 | struct gfs2_sbd *sdp; |
| 1127 | struct gfs2_holder mount_gh; |
| 1128 | int error; |
| 1129 | |
| 1130 | sdp = init_sbd(sb); |
| 1131 | if (!sdp) { |
Steven Whitehouse | d92a8d4 | 2006-02-27 10:57:14 -0500 | [diff] [blame] | 1132 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1133 | return -ENOMEM; |
| 1134 | } |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1135 | sdp->sd_args = *args; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1136 | |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 1137 | if (sdp->sd_args.ar_spectator) { |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1138 | sb->s_flags |= MS_RDONLY; |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 1139 | set_bit(SDF_NORECOVERY, &sdp->sd_flags); |
| 1140 | } |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1141 | if (sdp->sd_args.ar_posix_acl) |
| 1142 | sb->s_flags |= MS_POSIXACL; |
Christoph Hellwig | f25934c | 2009-10-30 08:03:27 +0100 | [diff] [blame] | 1143 | if (sdp->sd_args.ar_nobarrier) |
| 1144 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1145 | |
Steven Whitehouse | 719ee34 | 2008-09-18 13:53:59 +0100 | [diff] [blame] | 1146 | sb->s_magic = GFS2_MAGIC; |
| 1147 | sb->s_op = &gfs2_super_ops; |
| 1148 | sb->s_export_op = &gfs2_export_ops; |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1149 | sb->s_xattr = gfs2_xattr_handlers; |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 1150 | sb->s_qcop = &gfs2_quotactl_ops; |
| 1151 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
Steven Whitehouse | 719ee34 | 2008-09-18 13:53:59 +0100 | [diff] [blame] | 1152 | sb->s_time_gran = 1; |
| 1153 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1154 | |
| 1155 | /* Set up the buffer cache and fill in some fake block size values |
| 1156 | to allow us to read-in the on-disk superblock. */ |
| 1157 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); |
| 1158 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; |
| 1159 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
| 1160 | GFS2_BASIC_BLOCK_SHIFT; |
| 1161 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1162 | |
Steven Whitehouse | 48c2b61 | 2009-05-13 14:49:48 +0100 | [diff] [blame] | 1163 | sdp->sd_tune.gt_log_flush_secs = sdp->sd_args.ar_commit; |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1164 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
| 1165 | if (sdp->sd_args.ar_statfs_quantum) { |
| 1166 | sdp->sd_tune.gt_statfs_slow = 0; |
| 1167 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; |
| 1168 | } |
| 1169 | else { |
| 1170 | sdp->sd_tune.gt_statfs_slow = 1; |
| 1171 | sdp->sd_tune.gt_statfs_quantum = 30; |
| 1172 | } |
Steven Whitehouse | 48c2b61 | 2009-05-13 14:49:48 +0100 | [diff] [blame] | 1173 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1174 | error = init_names(sdp, silent); |
| 1175 | if (error) |
| 1176 | goto fail; |
| 1177 | |
Robert Peterson | 7c52b16 | 2007-03-16 10:26:37 +0000 | [diff] [blame] | 1178 | gfs2_create_debugfs_file(sdp); |
| 1179 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1180 | error = gfs2_sys_fs_add(sdp); |
| 1181 | if (error) |
| 1182 | goto fail; |
| 1183 | |
| 1184 | error = gfs2_lm_mount(sdp, silent); |
| 1185 | if (error) |
| 1186 | goto fail_sys; |
| 1187 | |
| 1188 | error = init_locking(sdp, &mount_gh, DO); |
| 1189 | if (error) |
| 1190 | goto fail_lm; |
| 1191 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1192 | error = init_sb(sdp, silent); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1193 | if (error) |
| 1194 | goto fail_locking; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1195 | |
| 1196 | error = init_inodes(sdp, DO); |
| 1197 | if (error) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 1198 | goto fail_sb; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1199 | |
| 1200 | error = init_per_node(sdp, DO); |
| 1201 | if (error) |
| 1202 | goto fail_inodes; |
| 1203 | |
| 1204 | error = gfs2_statfs_init(sdp); |
| 1205 | if (error) { |
| 1206 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); |
| 1207 | goto fail_per_node; |
| 1208 | } |
| 1209 | |
| 1210 | error = init_threads(sdp, DO); |
| 1211 | if (error) |
| 1212 | goto fail_per_node; |
| 1213 | |
| 1214 | if (!(sb->s_flags & MS_RDONLY)) { |
| 1215 | error = gfs2_make_fs_rw(sdp); |
| 1216 | if (error) { |
| 1217 | fs_err(sdp, "can't make FS RW: %d\n", error); |
| 1218 | goto fail_threads; |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | gfs2_glock_dq_uninit(&mount_gh); |
Steven Whitehouse | 8633ecf | 2009-07-31 11:07:29 +0100 | [diff] [blame] | 1223 | gfs2_online_uevent(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1224 | return 0; |
| 1225 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1226 | fail_threads: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1227 | init_threads(sdp, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1228 | fail_per_node: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1229 | init_per_node(sdp, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1230 | fail_inodes: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1231 | init_inodes(sdp, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1232 | fail_sb: |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1233 | if (sdp->sd_root_dir) |
| 1234 | dput(sdp->sd_root_dir); |
| 1235 | if (sdp->sd_master_dir) |
| 1236 | dput(sdp->sd_master_dir); |
Steven Whitehouse | e7c8707 | 2009-01-20 16:39:23 +0000 | [diff] [blame] | 1237 | if (sb->s_root) |
| 1238 | dput(sb->s_root); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1239 | sb->s_root = NULL; |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1240 | fail_locking: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1241 | init_locking(sdp, &mount_gh, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1242 | fail_lm: |
Steven Whitehouse | c1184f8 | 2010-01-08 16:14:29 +0000 | [diff] [blame] | 1243 | invalidate_inodes(sb); |
Steven Whitehouse | fefc03b | 2008-12-19 15:32:06 +0000 | [diff] [blame] | 1244 | gfs2_gl_hash_clear(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1245 | gfs2_lm_unmount(sdp); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1246 | fail_sys: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1247 | gfs2_sys_fs_del(sdp); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1248 | fail: |
Robert Peterson | 5f88209 | 2007-04-18 11:41:11 -0500 | [diff] [blame] | 1249 | gfs2_delete_debugfs_file(sdp); |
Steven Whitehouse | a2c4580 | 2006-09-08 10:13:03 -0400 | [diff] [blame] | 1250 | kfree(sdp); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 1251 | sb->s_fs_info = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1252 | return error; |
| 1253 | } |
| 1254 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1255 | static int set_gfs2_super(struct super_block *s, void *data) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1256 | { |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1257 | s->s_bdev = data; |
| 1258 | s->s_dev = s->s_bdev->bd_dev; |
| 1259 | |
| 1260 | /* |
| 1261 | * We set the bdi here to the queue backing, file systems can |
| 1262 | * overwrite this in ->fill_super() |
| 1263 | */ |
| 1264 | s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info; |
| 1265 | return 0; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1266 | } |
| 1267 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1268 | static int test_gfs2_super(struct super_block *s, void *ptr) |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1269 | { |
| 1270 | struct block_device *bdev = ptr; |
| 1271 | return (bdev == s->s_bdev); |
| 1272 | } |
| 1273 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1274 | /** |
| 1275 | * gfs2_get_sb - Get the GFS2 superblock |
| 1276 | * @fs_type: The GFS2 filesystem type |
| 1277 | * @flags: Mount flags |
| 1278 | * @dev_name: The name of the device |
| 1279 | * @data: The mount arguments |
| 1280 | * @mnt: The vfsmnt for this mount |
| 1281 | * |
| 1282 | * Q. Why not use get_sb_bdev() ? |
| 1283 | * A. We need to select one of two root directories to mount, independent |
| 1284 | * of whether this is the initial, or subsequent, mount of this sb |
| 1285 | * |
| 1286 | * Returns: 0 or -ve on error |
| 1287 | */ |
| 1288 | |
| 1289 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
| 1290 | const char *dev_name, void *data, struct vfsmount *mnt) |
| 1291 | { |
| 1292 | struct block_device *bdev; |
| 1293 | struct super_block *s; |
| 1294 | fmode_t mode = FMODE_READ; |
| 1295 | int error; |
| 1296 | struct gfs2_args args; |
| 1297 | struct gfs2_sbd *sdp; |
| 1298 | |
| 1299 | if (!(flags & MS_RDONLY)) |
| 1300 | mode |= FMODE_WRITE; |
| 1301 | |
| 1302 | bdev = open_bdev_exclusive(dev_name, mode, fs_type); |
| 1303 | if (IS_ERR(bdev)) |
| 1304 | return PTR_ERR(bdev); |
| 1305 | |
| 1306 | /* |
| 1307 | * once the super is inserted into the list by sget, s_umount |
| 1308 | * will protect the lockfs code from trying to start a snapshot |
| 1309 | * while we are mounting |
| 1310 | */ |
| 1311 | mutex_lock(&bdev->bd_fsfreeze_mutex); |
| 1312 | if (bdev->bd_fsfreeze_count > 0) { |
| 1313 | mutex_unlock(&bdev->bd_fsfreeze_mutex); |
| 1314 | error = -EBUSY; |
| 1315 | goto error_bdev; |
| 1316 | } |
| 1317 | s = sget(fs_type, test_gfs2_super, set_gfs2_super, bdev); |
| 1318 | mutex_unlock(&bdev->bd_fsfreeze_mutex); |
| 1319 | error = PTR_ERR(s); |
| 1320 | if (IS_ERR(s)) |
| 1321 | goto error_bdev; |
| 1322 | |
| 1323 | memset(&args, 0, sizeof(args)); |
| 1324 | args.ar_quota = GFS2_QUOTA_DEFAULT; |
| 1325 | args.ar_data = GFS2_DATA_DEFAULT; |
| 1326 | args.ar_commit = 60; |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1327 | args.ar_statfs_quantum = 30; |
| 1328 | args.ar_quota_quantum = 60; |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1329 | args.ar_errors = GFS2_ERRORS_DEFAULT; |
| 1330 | |
| 1331 | error = gfs2_mount_args(&args, data); |
| 1332 | if (error) { |
| 1333 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
| 1334 | if (s->s_root) |
| 1335 | goto error_super; |
| 1336 | deactivate_locked_super(s); |
| 1337 | return error; |
| 1338 | } |
| 1339 | |
| 1340 | if (s->s_root) { |
| 1341 | error = -EBUSY; |
| 1342 | if ((flags ^ s->s_flags) & MS_RDONLY) |
| 1343 | goto error_super; |
| 1344 | close_bdev_exclusive(bdev, mode); |
| 1345 | } else { |
| 1346 | char b[BDEVNAME_SIZE]; |
| 1347 | |
| 1348 | s->s_flags = flags; |
| 1349 | s->s_mode = mode; |
| 1350 | strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id)); |
| 1351 | sb_set_blocksize(s, block_size(bdev)); |
| 1352 | error = fill_super(s, &args, flags & MS_SILENT ? 1 : 0); |
| 1353 | if (error) { |
| 1354 | deactivate_locked_super(s); |
| 1355 | return error; |
| 1356 | } |
| 1357 | s->s_flags |= MS_ACTIVE; |
| 1358 | bdev->bd_super = s; |
| 1359 | } |
| 1360 | |
| 1361 | sdp = s->s_fs_info; |
| 1362 | mnt->mnt_sb = s; |
| 1363 | if (args.ar_meta) |
| 1364 | mnt->mnt_root = dget(sdp->sd_master_dir); |
| 1365 | else |
| 1366 | mnt->mnt_root = dget(sdp->sd_root_dir); |
| 1367 | return 0; |
| 1368 | |
| 1369 | error_super: |
| 1370 | deactivate_locked_super(s); |
| 1371 | error_bdev: |
| 1372 | close_bdev_exclusive(bdev, mode); |
| 1373 | return error; |
| 1374 | } |
| 1375 | |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1376 | static int set_meta_super(struct super_block *s, void *ptr) |
| 1377 | { |
| 1378 | return -EINVAL; |
| 1379 | } |
| 1380 | |
Steven Whitehouse | 003dec8 | 2009-06-10 10:31:45 +0100 | [diff] [blame] | 1381 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, |
| 1382 | const char *dev_name, void *data, struct vfsmount *mnt) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1383 | { |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1384 | struct super_block *s; |
Steven Whitehouse | 003dec8 | 2009-06-10 10:31:45 +0100 | [diff] [blame] | 1385 | struct gfs2_sbd *sdp; |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1386 | struct path path; |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1387 | int error; |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 1388 | |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1389 | error = kern_path(dev_name, LOOKUP_FOLLOW, &path); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1390 | if (error) { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1391 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n", |
| 1392 | dev_name, error); |
Steven Whitehouse | 003dec8 | 2009-06-10 10:31:45 +0100 | [diff] [blame] | 1393 | return error; |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1394 | } |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1395 | s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1396 | path.dentry->d_inode->i_sb->s_bdev); |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1397 | path_put(&path); |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1398 | if (IS_ERR(s)) { |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1399 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1400 | return PTR_ERR(s); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1401 | } |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1402 | if ((flags ^ s->s_flags) & MS_RDONLY) { |
| 1403 | deactivate_locked_super(s); |
| 1404 | return -EBUSY; |
| 1405 | } |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1406 | sdp = s->s_fs_info; |
| 1407 | mnt->mnt_sb = s; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1408 | mnt->mnt_root = dget(sdp->sd_master_dir); |
| 1409 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1410 | } |
| 1411 | |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1412 | static void gfs2_kill_sb(struct super_block *sb) |
| 1413 | { |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1414 | struct gfs2_sbd *sdp = sb->s_fs_info; |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1415 | |
| 1416 | if (sdp == NULL) { |
| 1417 | kill_block_super(sb); |
| 1418 | return; |
Abhijith Das | acd2c8a | 2008-09-15 08:54:06 -0500 | [diff] [blame] | 1419 | } |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1420 | |
| 1421 | gfs2_meta_syncfs(sdp); |
| 1422 | dput(sdp->sd_root_dir); |
| 1423 | dput(sdp->sd_master_dir); |
| 1424 | sdp->sd_root_dir = NULL; |
| 1425 | sdp->sd_master_dir = NULL; |
Steven Whitehouse | fefc03b | 2008-12-19 15:32:06 +0000 | [diff] [blame] | 1426 | shrink_dcache_sb(sb); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1427 | kill_block_super(sb); |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1428 | gfs2_delete_debugfs_file(sdp); |
| 1429 | kfree(sdp); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1430 | } |
| 1431 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1432 | struct file_system_type gfs2_fs_type = { |
| 1433 | .name = "gfs2", |
| 1434 | .fs_flags = FS_REQUIRES_DEV, |
| 1435 | .get_sb = gfs2_get_sb, |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1436 | .kill_sb = gfs2_kill_sb, |
| 1437 | .owner = THIS_MODULE, |
| 1438 | }; |
| 1439 | |
| 1440 | struct file_system_type gfs2meta_fs_type = { |
| 1441 | .name = "gfs2meta", |
| 1442 | .fs_flags = FS_REQUIRES_DEV, |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1443 | .get_sb = gfs2_get_sb_meta, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1444 | .owner = THIS_MODULE, |
| 1445 | }; |
| 1446 | |