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 | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 20 | #include <linux/quotaops.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 21 | |
| 22 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 23 | #include "incore.h" |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 24 | #include "bmap.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 25 | #include "glock.h" |
| 26 | #include "glops.h" |
| 27 | #include "inode.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 28 | #include "recovery.h" |
| 29 | #include "rgrp.h" |
| 30 | #include "super.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 31 | #include "sys.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 32 | #include "util.h" |
Steven Whitehouse | bb3b0e3 | 2007-08-16 16:03:57 +0100 | [diff] [blame] | 33 | #include "log.h" |
Steven Whitehouse | 9ac1b4d | 2008-11-19 10:08:22 +0000 | [diff] [blame] | 34 | #include "quota.h" |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 35 | #include "dir.h" |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 36 | #include "trace_gfs2.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 37 | |
| 38 | #define DO 0 |
| 39 | #define UNDO 1 |
| 40 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 41 | static const u32 gfs2_old_fs_formats[] = { |
| 42 | 0 |
| 43 | }; |
| 44 | |
| 45 | static const u32 gfs2_old_multihost_formats[] = { |
| 46 | 0 |
| 47 | }; |
| 48 | |
| 49 | /** |
| 50 | * gfs2_tune_init - Fill a gfs2_tune structure with default values |
| 51 | * @gt: tune |
| 52 | * |
| 53 | */ |
| 54 | |
| 55 | static void gfs2_tune_init(struct gfs2_tune *gt) |
| 56 | { |
| 57 | spin_lock_init(>->gt_spin); |
| 58 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 59 | gt->gt_quota_simul_sync = 64; |
| 60 | gt->gt_quota_warn_period = 10; |
| 61 | gt->gt_quota_scale_num = 1; |
| 62 | gt->gt_quota_scale_den = 1; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 63 | gt->gt_new_files_jdata = 0; |
| 64 | gt->gt_max_readahead = 1 << 18; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 65 | gt->gt_complain_secs = 10; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 66 | } |
| 67 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 68 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
| 69 | { |
| 70 | struct gfs2_sbd *sdp; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 71 | |
Steven Whitehouse | 85d1da6 | 2006-09-07 14:40:21 -0400 | [diff] [blame] | 72 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 73 | if (!sdp) |
| 74 | return NULL; |
| 75 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 76 | sb->s_fs_info = sdp; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 77 | sdp->sd_vfs = sb; |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 78 | set_bit(SDF_NOJOURNALID, &sdp->sd_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 79 | gfs2_tune_init(&sdp->sd_tune); |
| 80 | |
Steven Whitehouse | e402746 | 2010-01-25 11:20:19 +0000 | [diff] [blame] | 81 | init_waitqueue_head(&sdp->sd_glock_wait); |
| 82 | atomic_set(&sdp->sd_glock_disposal, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 83 | spin_lock_init(&sdp->sd_statfs_spin); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 84 | |
| 85 | spin_lock_init(&sdp->sd_rindex_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 86 | mutex_init(&sdp->sd_rindex_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 87 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
| 88 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 89 | |
| 90 | INIT_LIST_HEAD(&sdp->sd_jindex_list); |
| 91 | spin_lock_init(&sdp->sd_jindex_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 92 | mutex_init(&sdp->sd_jindex_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 93 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 94 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 95 | mutex_init(&sdp->sd_quota_mutex); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 96 | init_waitqueue_head(&sdp->sd_quota_wait); |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 97 | INIT_LIST_HEAD(&sdp->sd_trunc_list); |
| 98 | spin_lock_init(&sdp->sd_trunc_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 99 | |
| 100 | spin_lock_init(&sdp->sd_log_lock); |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 101 | atomic_set(&sdp->sd_log_pinned, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 102 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); |
| 103 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); |
| 104 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); |
| 105 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); |
Steven Whitehouse | d7b616e | 2007-09-02 10:48:13 +0100 | [diff] [blame] | 106 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 107 | |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 108 | init_waitqueue_head(&sdp->sd_log_waitq); |
| 109 | init_waitqueue_head(&sdp->sd_logd_waitq); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 110 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
| 111 | INIT_LIST_HEAD(&sdp->sd_ail2_list); |
| 112 | |
Steven Whitehouse | 484adff | 2006-03-29 09:12:12 -0500 | [diff] [blame] | 113 | init_rwsem(&sdp->sd_log_flush_lock); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 114 | atomic_set(&sdp->sd_log_in_flight, 0); |
| 115 | init_waitqueue_head(&sdp->sd_log_flush_wait); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 116 | |
| 117 | INIT_LIST_HEAD(&sdp->sd_revoke_list); |
| 118 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 119 | mutex_init(&sdp->sd_freeze_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 120 | |
| 121 | return sdp; |
| 122 | } |
| 123 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 124 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 125 | /** |
| 126 | * gfs2_check_sb - Check superblock |
| 127 | * @sdp: the filesystem |
| 128 | * @sb: The superblock |
| 129 | * @silent: Don't print a message if the check fails |
| 130 | * |
| 131 | * Checks the version code of the FS is one that we understand how to |
| 132 | * read and that the sizes of the various on-disk structures have not |
| 133 | * changed. |
| 134 | */ |
| 135 | |
| 136 | static int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent) |
| 137 | { |
| 138 | unsigned int x; |
| 139 | |
| 140 | if (sb->sb_magic != GFS2_MAGIC || |
| 141 | sb->sb_type != GFS2_METATYPE_SB) { |
| 142 | if (!silent) |
| 143 | printk(KERN_WARNING "GFS2: not a GFS2 filesystem\n"); |
| 144 | return -EINVAL; |
| 145 | } |
| 146 | |
| 147 | /* If format numbers match exactly, we're done. */ |
| 148 | |
| 149 | if (sb->sb_fs_format == GFS2_FORMAT_FS && |
| 150 | sb->sb_multihost_format == GFS2_FORMAT_MULTI) |
| 151 | return 0; |
| 152 | |
| 153 | if (sb->sb_fs_format != GFS2_FORMAT_FS) { |
| 154 | for (x = 0; gfs2_old_fs_formats[x]; x++) |
| 155 | if (gfs2_old_fs_formats[x] == sb->sb_fs_format) |
| 156 | break; |
| 157 | |
| 158 | if (!gfs2_old_fs_formats[x]) { |
| 159 | printk(KERN_WARNING |
| 160 | "GFS2: code version (%u, %u) is incompatible " |
| 161 | "with ondisk format (%u, %u)\n", |
| 162 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, |
| 163 | sb->sb_fs_format, sb->sb_multihost_format); |
| 164 | printk(KERN_WARNING |
| 165 | "GFS2: I don't know how to upgrade this FS\n"); |
| 166 | return -EINVAL; |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | if (sb->sb_multihost_format != GFS2_FORMAT_MULTI) { |
| 171 | for (x = 0; gfs2_old_multihost_formats[x]; x++) |
| 172 | if (gfs2_old_multihost_formats[x] == |
| 173 | sb->sb_multihost_format) |
| 174 | break; |
| 175 | |
| 176 | if (!gfs2_old_multihost_formats[x]) { |
| 177 | printk(KERN_WARNING |
| 178 | "GFS2: code version (%u, %u) is incompatible " |
| 179 | "with ondisk format (%u, %u)\n", |
| 180 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, |
| 181 | sb->sb_fs_format, sb->sb_multihost_format); |
| 182 | printk(KERN_WARNING |
| 183 | "GFS2: I don't know how to upgrade this FS\n"); |
| 184 | return -EINVAL; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | if (!sdp->sd_args.ar_upgrade) { |
| 189 | printk(KERN_WARNING |
| 190 | "GFS2: code version (%u, %u) is incompatible " |
| 191 | "with ondisk format (%u, %u)\n", |
| 192 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, |
| 193 | sb->sb_fs_format, sb->sb_multihost_format); |
| 194 | printk(KERN_INFO |
| 195 | "GFS2: Use the \"upgrade\" mount option to upgrade " |
| 196 | "the FS\n"); |
| 197 | printk(KERN_INFO "GFS2: See the manual for more details\n"); |
| 198 | return -EINVAL; |
| 199 | } |
| 200 | |
| 201 | return 0; |
| 202 | } |
| 203 | |
| 204 | static void end_bio_io_page(struct bio *bio, int error) |
| 205 | { |
| 206 | struct page *page = bio->bi_private; |
| 207 | |
| 208 | if (!error) |
| 209 | SetPageUptodate(page); |
| 210 | else |
| 211 | printk(KERN_WARNING "gfs2: error %d reading superblock\n", error); |
| 212 | unlock_page(page); |
| 213 | } |
| 214 | |
| 215 | static void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) |
| 216 | { |
| 217 | const struct gfs2_sb *str = buf; |
| 218 | |
| 219 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); |
| 220 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); |
| 221 | sb->sb_format = be32_to_cpu(str->sb_header.mh_format); |
| 222 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); |
| 223 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); |
| 224 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); |
| 225 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); |
| 226 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); |
| 227 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); |
| 228 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); |
| 229 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); |
| 230 | |
| 231 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); |
| 232 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); |
Steven Whitehouse | 02e3cc7 | 2009-02-10 13:48:30 +0000 | [diff] [blame] | 233 | memcpy(sb->sb_uuid, str->sb_uuid, 16); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | /** |
| 237 | * gfs2_read_super - Read the gfs2 super block from disk |
| 238 | * @sdp: The GFS2 super block |
| 239 | * @sector: The location of the super block |
| 240 | * @error: The error code to return |
| 241 | * |
| 242 | * This uses the bio functions to read the super block from disk |
| 243 | * because we want to be 100% sure that we never read cached data. |
| 244 | * A super block is read twice only during each GFS2 mount and is |
| 245 | * never written to by the filesystem. The first time its read no |
| 246 | * locks are held, and the only details which are looked at are those |
| 247 | * relating to the locking protocol. Once locking is up and working, |
| 248 | * the sb is read again under the lock to establish the location of |
| 249 | * the master directory (contains pointers to journals etc) and the |
| 250 | * root directory. |
| 251 | * |
| 252 | * Returns: 0 on success or error |
| 253 | */ |
| 254 | |
| 255 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector) |
| 256 | { |
| 257 | struct super_block *sb = sdp->sd_vfs; |
| 258 | struct gfs2_sb *p; |
| 259 | struct page *page; |
| 260 | struct bio *bio; |
| 261 | |
| 262 | page = alloc_page(GFP_NOFS); |
| 263 | if (unlikely(!page)) |
| 264 | return -ENOBUFS; |
| 265 | |
| 266 | ClearPageUptodate(page); |
| 267 | ClearPageDirty(page); |
| 268 | lock_page(page); |
| 269 | |
| 270 | bio = bio_alloc(GFP_NOFS, 1); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 271 | bio->bi_sector = sector * (sb->s_blocksize >> 9); |
| 272 | bio->bi_bdev = sb->s_bdev; |
| 273 | bio_add_page(bio, page, PAGE_SIZE, 0); |
| 274 | |
| 275 | bio->bi_end_io = end_bio_io_page; |
| 276 | bio->bi_private = page; |
Christoph Hellwig | 7b6d91d | 2010-08-07 18:20:39 +0200 | [diff] [blame] | 277 | submit_bio(READ_SYNC | REQ_META, bio); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 278 | wait_on_page_locked(page); |
| 279 | bio_put(bio); |
| 280 | if (!PageUptodate(page)) { |
| 281 | __free_page(page); |
| 282 | return -EIO; |
| 283 | } |
| 284 | p = kmap(page); |
| 285 | gfs2_sb_in(&sdp->sd_sb, p); |
| 286 | kunmap(page); |
| 287 | __free_page(page); |
| 288 | return 0; |
| 289 | } |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 290 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 291 | /** |
| 292 | * gfs2_read_sb - Read super block |
| 293 | * @sdp: The GFS2 superblock |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 294 | * @silent: Don't print message if mount fails |
| 295 | * |
| 296 | */ |
| 297 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 298 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 299 | { |
| 300 | u32 hash_blocks, ind_blocks, leaf_blocks; |
| 301 | u32 tmp_blocks; |
| 302 | unsigned int x; |
| 303 | int error; |
| 304 | |
| 305 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
| 306 | if (error) { |
| 307 | if (!silent) |
| 308 | fs_err(sdp, "can't read superblock\n"); |
| 309 | return error; |
| 310 | } |
| 311 | |
| 312 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); |
| 313 | if (error) |
| 314 | return error; |
| 315 | |
| 316 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
| 317 | GFS2_BASIC_BLOCK_SHIFT; |
| 318 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; |
| 319 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - |
| 320 | sizeof(struct gfs2_dinode)) / sizeof(u64); |
| 321 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - |
| 322 | sizeof(struct gfs2_meta_header)) / sizeof(u64); |
| 323 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); |
| 324 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; |
| 325 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; |
| 326 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); |
| 327 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - |
| 328 | sizeof(struct gfs2_meta_header)) / |
| 329 | sizeof(struct gfs2_quota_change); |
| 330 | |
| 331 | /* Compute maximum reservation required to add a entry to a directory */ |
| 332 | |
| 333 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH), |
| 334 | sdp->sd_jbsize); |
| 335 | |
| 336 | ind_blocks = 0; |
| 337 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { |
| 338 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); |
| 339 | ind_blocks += tmp_blocks; |
| 340 | } |
| 341 | |
| 342 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; |
| 343 | |
| 344 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; |
| 345 | |
| 346 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - |
| 347 | sizeof(struct gfs2_dinode); |
| 348 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; |
| 349 | for (x = 2;; x++) { |
| 350 | u64 space, d; |
| 351 | u32 m; |
| 352 | |
| 353 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; |
| 354 | d = space; |
| 355 | m = do_div(d, sdp->sd_inptrs); |
| 356 | |
| 357 | if (d != sdp->sd_heightsize[x - 1] || m) |
| 358 | break; |
| 359 | sdp->sd_heightsize[x] = space; |
| 360 | } |
| 361 | sdp->sd_max_height = x; |
| 362 | sdp->sd_heightsize[x] = ~0; |
| 363 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); |
| 364 | |
| 365 | sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize - |
| 366 | sizeof(struct gfs2_dinode); |
| 367 | sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs; |
| 368 | for (x = 2;; x++) { |
| 369 | u64 space, d; |
| 370 | u32 m; |
| 371 | |
| 372 | space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs; |
| 373 | d = space; |
| 374 | m = do_div(d, sdp->sd_inptrs); |
| 375 | |
| 376 | if (d != sdp->sd_jheightsize[x - 1] || m) |
| 377 | break; |
| 378 | sdp->sd_jheightsize[x] = space; |
| 379 | } |
| 380 | sdp->sd_max_jheight = x; |
| 381 | sdp->sd_jheightsize[x] = ~0; |
| 382 | gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT); |
| 383 | |
| 384 | return 0; |
| 385 | } |
| 386 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 387 | static int init_names(struct gfs2_sbd *sdp, int silent) |
| 388 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 389 | char *proto, *table; |
| 390 | int error = 0; |
| 391 | |
| 392 | proto = sdp->sd_args.ar_lockproto; |
| 393 | table = sdp->sd_args.ar_locktable; |
| 394 | |
| 395 | /* Try to autodetect */ |
| 396 | |
| 397 | if (!proto[0] || !table[0]) { |
Steven Whitehouse | bb8d8a6 | 2007-06-01 14:11:58 +0100 | [diff] [blame] | 398 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
| 399 | if (error) |
| 400 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 401 | |
Steven Whitehouse | 3cf1e7b | 2006-10-02 11:49:41 -0400 | [diff] [blame] | 402 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 403 | if (error) |
| 404 | goto out; |
| 405 | |
| 406 | if (!proto[0]) |
Steven Whitehouse | 3cf1e7b | 2006-10-02 11:49:41 -0400 | [diff] [blame] | 407 | proto = sdp->sd_sb.sb_lockproto; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 408 | if (!table[0]) |
Steven Whitehouse | 3cf1e7b | 2006-10-02 11:49:41 -0400 | [diff] [blame] | 409 | table = sdp->sd_sb.sb_locktable; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | if (!table[0]) |
| 413 | table = sdp->sd_vfs->s_id; |
| 414 | |
Jean Delvare | 00377d8 | 2008-05-09 17:59:51 +0200 | [diff] [blame] | 415 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
| 416 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 417 | |
Denis Cheng | 5d35e31 | 2007-08-13 11:01:58 +0800 | [diff] [blame] | 418 | table = sdp->sd_table_name; |
| 419 | while ((table = strchr(table, '/'))) |
Robert Peterson | b35997d | 2007-06-07 09:10:01 -0500 | [diff] [blame] | 420 | *table = '_'; |
| 421 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 422 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 423 | return error; |
| 424 | } |
| 425 | |
| 426 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, |
| 427 | int undo) |
| 428 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 429 | int error = 0; |
| 430 | |
| 431 | if (undo) |
| 432 | goto fail_trans; |
| 433 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 434 | error = gfs2_glock_nq_num(sdp, |
| 435 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, |
| 436 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, |
| 437 | mount_gh); |
| 438 | if (error) { |
| 439 | fs_err(sdp, "can't acquire mount glock: %d\n", error); |
| 440 | goto fail; |
| 441 | } |
| 442 | |
| 443 | error = gfs2_glock_nq_num(sdp, |
| 444 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, |
| 445 | LM_ST_SHARED, |
Steven Whitehouse | 579b78a | 2006-04-26 14:58:26 -0400 | [diff] [blame] | 446 | LM_FLAG_NOEXP | GL_EXACT, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 447 | &sdp->sd_live_gh); |
| 448 | if (error) { |
| 449 | fs_err(sdp, "can't acquire live glock: %d\n", error); |
| 450 | goto fail_mount; |
| 451 | } |
| 452 | |
| 453 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, |
| 454 | CREATE, &sdp->sd_rename_gl); |
| 455 | if (error) { |
| 456 | fs_err(sdp, "can't create rename glock: %d\n", error); |
| 457 | goto fail_live; |
| 458 | } |
| 459 | |
| 460 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, |
| 461 | CREATE, &sdp->sd_trans_gl); |
| 462 | if (error) { |
| 463 | fs_err(sdp, "can't create transaction glock: %d\n", error); |
| 464 | goto fail_rename; |
| 465 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 466 | |
| 467 | return 0; |
| 468 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 469 | fail_trans: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 470 | gfs2_glock_put(sdp->sd_trans_gl); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 471 | fail_rename: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 472 | gfs2_glock_put(sdp->sd_rename_gl); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 473 | fail_live: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 474 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 475 | fail_mount: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 476 | gfs2_glock_dq_uninit(mount_gh); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 477 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 478 | return error; |
| 479 | } |
| 480 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 481 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
| 482 | u64 no_addr, const char *name) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 483 | { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 484 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 485 | struct dentry *dentry; |
| 486 | struct inode *inode; |
| 487 | |
Bob Peterson | 1a0eae8 | 2010-04-14 11:58:16 -0400 | [diff] [blame] | 488 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 489 | if (IS_ERR(inode)) { |
| 490 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); |
| 491 | return PTR_ERR(inode); |
| 492 | } |
| 493 | dentry = d_alloc_root(inode); |
| 494 | if (!dentry) { |
| 495 | fs_err(sdp, "can't alloc %s dentry\n", name); |
| 496 | iput(inode); |
| 497 | return -ENOMEM; |
| 498 | } |
| 499 | dentry->d_op = &gfs2_dops; |
| 500 | *dptr = dentry; |
| 501 | return 0; |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 502 | } |
| 503 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 504 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 505 | { |
| 506 | struct super_block *sb = sdp->sd_vfs; |
| 507 | struct gfs2_holder sb_gh; |
Steven Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 508 | u64 no_addr; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 509 | int ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 510 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 511 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
| 512 | LM_ST_SHARED, 0, &sb_gh); |
| 513 | if (ret) { |
| 514 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); |
| 515 | return ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 516 | } |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 517 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 518 | ret = gfs2_read_sb(sdp, silent); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 519 | if (ret) { |
| 520 | fs_err(sdp, "can't read superblock: %d\n", ret); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 521 | goto out; |
| 522 | } |
| 523 | |
| 524 | /* Set up the buffer cache and SB for real */ |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 525 | 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] | 526 | ret = -EINVAL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 527 | fs_err(sdp, "FS block size (%u) is too small for device " |
| 528 | "block size (%u)\n", |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 529 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 530 | goto out; |
| 531 | } |
| 532 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 533 | ret = -EINVAL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 534 | fs_err(sdp, "FS block size (%u) is too big for machine " |
| 535 | "page size (%u)\n", |
| 536 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); |
| 537 | goto out; |
| 538 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 539 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
| 540 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 541 | /* Get the root inode */ |
Steven Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 542 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 543 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
| 544 | if (ret) |
| 545 | goto out; |
| 546 | |
| 547 | /* Get the master inode */ |
| 548 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; |
| 549 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); |
| 550 | if (ret) { |
| 551 | dput(sdp->sd_root_dir); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 552 | goto out; |
| 553 | } |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 554 | 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] | 555 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 556 | gfs2_glock_dq_uninit(&sb_gh); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 557 | return ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 558 | } |
| 559 | |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 560 | /** |
| 561 | * map_journal_extents - create a reusable "extent" mapping from all logical |
| 562 | * blocks to all physical blocks for the given journal. This will save |
| 563 | * us time when writing journal blocks. Most journals will have only one |
| 564 | * extent that maps all their logical blocks. That's because gfs2.mkfs |
| 565 | * arranges the journal blocks sequentially to maximize performance. |
| 566 | * So the extent would map the first block for the entire file length. |
| 567 | * However, gfs2_jadd can happen while file activity is happening, so |
| 568 | * those journals may not be sequential. Less likely is the case where |
| 569 | * the users created their own journals by mounting the metafs and |
| 570 | * laying it out. But it's still possible. These journals might have |
| 571 | * several extents. |
| 572 | * |
| 573 | * TODO: This should be done in bigger chunks rather than one block at a time, |
| 574 | * but since it's only done at mount time, I'm not worried about the |
| 575 | * time it takes. |
| 576 | */ |
| 577 | static int map_journal_extents(struct gfs2_sbd *sdp) |
| 578 | { |
| 579 | struct gfs2_jdesc *jd = sdp->sd_jdesc; |
| 580 | unsigned int lb; |
| 581 | u64 db, prev_db; /* logical block, disk block, prev disk block */ |
| 582 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 583 | struct gfs2_journal_extent *jext = NULL; |
| 584 | struct buffer_head bh; |
| 585 | int rc = 0; |
| 586 | |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 587 | prev_db = 0; |
| 588 | |
Steven Whitehouse | c9e9888 | 2008-11-04 09:47:33 +0000 | [diff] [blame] | 589 | 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] | 590 | bh.b_state = 0; |
| 591 | bh.b_blocknr = 0; |
| 592 | bh.b_size = 1 << ip->i_inode.i_blkbits; |
| 593 | rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0); |
| 594 | db = bh.b_blocknr; |
| 595 | if (rc || !db) { |
| 596 | printk(KERN_INFO "GFS2 journal mapping error %d: lb=" |
| 597 | "%u db=%llu\n", rc, lb, (unsigned long long)db); |
| 598 | break; |
| 599 | } |
| 600 | if (!prev_db || db != prev_db + 1) { |
| 601 | jext = kzalloc(sizeof(struct gfs2_journal_extent), |
| 602 | GFP_KERNEL); |
| 603 | if (!jext) { |
| 604 | printk(KERN_INFO "GFS2 error: out of memory " |
| 605 | "mapping journal extents.\n"); |
| 606 | rc = -ENOMEM; |
| 607 | break; |
| 608 | } |
| 609 | jext->dblock = db; |
| 610 | jext->lblock = lb; |
| 611 | jext->blocks = 1; |
| 612 | list_add_tail(&jext->extent_list, &jd->extent_list); |
| 613 | } else { |
| 614 | jext->blocks++; |
| 615 | } |
| 616 | prev_db = db; |
| 617 | } |
| 618 | return rc; |
| 619 | } |
| 620 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 621 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 622 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 623 | char *message = "FIRSTMOUNT=Done"; |
| 624 | char *envp[] = { message, NULL }; |
| 625 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 626 | ls->ls_first_done = 1; |
| 627 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 628 | } |
| 629 | |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 630 | /** |
| 631 | * gfs2_jindex_hold - Grab a lock on the jindex |
| 632 | * @sdp: The GFS2 superblock |
| 633 | * @ji_gh: the holder for the jindex glock |
| 634 | * |
| 635 | * Returns: errno |
| 636 | */ |
| 637 | |
| 638 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) |
| 639 | { |
| 640 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); |
| 641 | struct qstr name; |
| 642 | char buf[20]; |
| 643 | struct gfs2_jdesc *jd; |
| 644 | int error; |
| 645 | |
| 646 | name.name = buf; |
| 647 | |
| 648 | mutex_lock(&sdp->sd_jindex_mutex); |
| 649 | |
| 650 | for (;;) { |
| 651 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); |
| 652 | if (error) |
| 653 | break; |
| 654 | |
| 655 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); |
| 656 | name.hash = gfs2_disk_hash(name.name, name.len); |
| 657 | |
| 658 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); |
| 659 | if (error == -ENOENT) { |
| 660 | error = 0; |
| 661 | break; |
| 662 | } |
| 663 | |
| 664 | gfs2_glock_dq_uninit(ji_gh); |
| 665 | |
| 666 | if (error) |
| 667 | break; |
| 668 | |
| 669 | error = -ENOMEM; |
| 670 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); |
| 671 | if (!jd) |
| 672 | break; |
| 673 | |
| 674 | INIT_LIST_HEAD(&jd->extent_list); |
Tejun Heo | 6ecd7c2 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 675 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 676 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
| 677 | if (!jd->jd_inode || IS_ERR(jd->jd_inode)) { |
| 678 | if (!jd->jd_inode) |
| 679 | error = -ENOENT; |
| 680 | else |
| 681 | error = PTR_ERR(jd->jd_inode); |
| 682 | kfree(jd); |
| 683 | break; |
| 684 | } |
| 685 | |
| 686 | spin_lock(&sdp->sd_jindex_spin); |
| 687 | jd->jd_jid = sdp->sd_journals++; |
| 688 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); |
| 689 | spin_unlock(&sdp->sd_jindex_spin); |
| 690 | } |
| 691 | |
| 692 | mutex_unlock(&sdp->sd_jindex_mutex); |
| 693 | |
| 694 | return error; |
| 695 | } |
| 696 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 697 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
| 698 | { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 699 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 700 | struct gfs2_holder ji_gh; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 701 | struct gfs2_inode *ip; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 702 | int jindex = 1; |
| 703 | int error = 0; |
| 704 | |
| 705 | if (undo) { |
| 706 | jindex = 0; |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 707 | goto fail_jinode_gh; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 708 | } |
| 709 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 710 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 711 | if (IS_ERR(sdp->sd_jindex)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 712 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 713 | return PTR_ERR(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 714 | } |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 715 | ip = GFS2_I(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 716 | |
| 717 | /* Load in the journal index special file */ |
| 718 | |
| 719 | error = gfs2_jindex_hold(sdp, &ji_gh); |
| 720 | if (error) { |
| 721 | fs_err(sdp, "can't read journal index: %d\n", error); |
| 722 | goto fail; |
| 723 | } |
| 724 | |
Abhijith Das | 0e5a9fb | 2010-02-05 18:25:41 -0500 | [diff] [blame] | 725 | error = -EUSERS; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 726 | if (!gfs2_jindex_size(sdp)) { |
| 727 | fs_err(sdp, "no journals!\n"); |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 728 | goto fail_jindex; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 729 | } |
| 730 | |
| 731 | if (sdp->sd_args.ar_spectator) { |
| 732 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); |
Steven Whitehouse | fd041f0 | 2007-11-08 14:55:03 +0000 | [diff] [blame] | 733 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 734 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
| 735 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); |
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); |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 773 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
| 774 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 775 | |
| 776 | /* Map the extents for this journal's blocks */ |
| 777 | map_journal_extents(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 778 | } |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 779 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 780 | |
| 781 | if (sdp->sd_lockstruct.ls_first) { |
| 782 | unsigned int x; |
| 783 | for (x = 0; x < sdp->sd_journals; x++) { |
Tejun Heo | 6ecd7c2 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 784 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), |
| 785 | true); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 786 | if (error) { |
| 787 | fs_err(sdp, "error recovering journal %u: %d\n", |
| 788 | x, error); |
| 789 | goto fail_jinode_gh; |
| 790 | } |
| 791 | } |
| 792 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 793 | gfs2_others_may_mount(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 794 | } else if (!sdp->sd_args.ar_spectator) { |
Tejun Heo | 6ecd7c2 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 795 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 796 | if (error) { |
| 797 | fs_err(sdp, "error recovering my journal: %d\n", error); |
| 798 | goto fail_jinode_gh; |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
| 803 | gfs2_glock_dq_uninit(&ji_gh); |
| 804 | jindex = 0; |
| 805 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 806 | return 0; |
| 807 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 808 | fail_jinode_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_jinode_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 811 | fail_journal_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 812 | if (!sdp->sd_args.ar_spectator) |
| 813 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 814 | fail_jindex: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 815 | gfs2_jindex_free(sdp); |
| 816 | if (jindex) |
| 817 | gfs2_glock_dq_uninit(&ji_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 818 | fail: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 819 | iput(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 820 | return error; |
| 821 | } |
| 822 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 823 | |
| 824 | static int init_inodes(struct gfs2_sbd *sdp, int undo) |
| 825 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 826 | int error = 0; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 827 | struct gfs2_inode *ip; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 828 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 829 | |
| 830 | if (undo) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 831 | goto fail_qinode; |
| 832 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 833 | error = init_journal(sdp, undo); |
| 834 | if (error) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 835 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 836 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 837 | /* Read in the master statfs inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 838 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 839 | if (IS_ERR(sdp->sd_statfs_inode)) { |
| 840 | error = PTR_ERR(sdp->sd_statfs_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 841 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 842 | goto fail_journal; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | /* Read in the resource index inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 846 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 847 | if (IS_ERR(sdp->sd_rindex)) { |
| 848 | error = PTR_ERR(sdp->sd_rindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 849 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
| 850 | goto fail_statfs; |
| 851 | } |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 852 | ip = GFS2_I(sdp->sd_rindex); |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 853 | sdp->sd_rindex_uptodate = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 854 | |
| 855 | /* Read in the quota inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 856 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 857 | if (IS_ERR(sdp->sd_quota_inode)) { |
| 858 | error = PTR_ERR(sdp->sd_quota_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 859 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
| 860 | goto fail_rindex; |
| 861 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 862 | return 0; |
| 863 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 864 | fail_qinode: |
| 865 | iput(sdp->sd_quota_inode); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 866 | fail_rindex: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 867 | gfs2_clear_rgrpd(sdp); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 868 | iput(sdp->sd_rindex); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 869 | fail_statfs: |
| 870 | iput(sdp->sd_statfs_inode); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 871 | fail_journal: |
| 872 | init_journal(sdp, UNDO); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 873 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 874 | return error; |
| 875 | } |
| 876 | |
| 877 | static int init_per_node(struct gfs2_sbd *sdp, int undo) |
| 878 | { |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 879 | struct inode *pn = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 880 | char buf[30]; |
| 881 | int error = 0; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 882 | struct gfs2_inode *ip; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 883 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 884 | |
| 885 | if (sdp->sd_args.ar_spectator) |
| 886 | return 0; |
| 887 | |
| 888 | if (undo) |
| 889 | goto fail_qc_gh; |
| 890 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 891 | pn = gfs2_lookup_simple(master, "per_node"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 892 | if (IS_ERR(pn)) { |
| 893 | error = PTR_ERR(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 894 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
| 895 | return error; |
| 896 | } |
| 897 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 898 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 899 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
| 900 | if (IS_ERR(sdp->sd_sc_inode)) { |
| 901 | error = PTR_ERR(sdp->sd_sc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 902 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 903 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 904 | } |
| 905 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 906 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 907 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
| 908 | if (IS_ERR(sdp->sd_qc_inode)) { |
| 909 | error = PTR_ERR(sdp->sd_qc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 910 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
| 911 | goto fail_ut_i; |
| 912 | } |
| 913 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 914 | iput(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 915 | pn = NULL; |
| 916 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 917 | ip = GFS2_I(sdp->sd_sc_inode); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 918 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 919 | &sdp->sd_sc_gh); |
| 920 | if (error) { |
| 921 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 922 | goto fail_qc_i; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 923 | } |
| 924 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 925 | ip = GFS2_I(sdp->sd_qc_inode); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 926 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 927 | &sdp->sd_qc_gh); |
| 928 | if (error) { |
| 929 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); |
| 930 | goto fail_ut_gh; |
| 931 | } |
| 932 | |
| 933 | return 0; |
| 934 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 935 | fail_qc_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 936 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 937 | fail_ut_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 938 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 939 | fail_qc_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 940 | iput(sdp->sd_qc_inode); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 941 | fail_ut_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 942 | iput(sdp->sd_sc_inode); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 943 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 944 | if (pn) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 945 | iput(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 946 | return error; |
| 947 | } |
| 948 | |
| 949 | static int init_threads(struct gfs2_sbd *sdp, int undo) |
| 950 | { |
| 951 | struct task_struct *p; |
| 952 | int error = 0; |
| 953 | |
| 954 | if (undo) |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 955 | goto fail_quotad; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 956 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 957 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); |
| 958 | error = IS_ERR(p); |
| 959 | if (error) { |
| 960 | fs_err(sdp, "can't start logd thread: %d\n", error); |
| 961 | return error; |
| 962 | } |
| 963 | sdp->sd_logd_process = p; |
| 964 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 965 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); |
| 966 | error = IS_ERR(p); |
| 967 | if (error) { |
| 968 | fs_err(sdp, "can't start quotad thread: %d\n", error); |
| 969 | goto fail; |
| 970 | } |
| 971 | sdp->sd_quotad_process = p; |
| 972 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 973 | return 0; |
| 974 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 975 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 976 | fail_quotad: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 977 | kthread_stop(sdp->sd_quotad_process); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 978 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 979 | kthread_stop(sdp->sd_logd_process); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 980 | return error; |
| 981 | } |
| 982 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 983 | static const match_table_t nolock_tokens = { |
| 984 | { Opt_jid, "jid=%d\n", }, |
| 985 | { Opt_err, NULL }, |
| 986 | }; |
| 987 | |
Steven Whitehouse | 8f05228 | 2010-01-29 15:21:27 +0000 | [diff] [blame] | 988 | static void nolock_put_lock(struct kmem_cache *cachep, struct gfs2_glock *gl) |
| 989 | { |
| 990 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 991 | kmem_cache_free(cachep, gl); |
| 992 | if (atomic_dec_and_test(&sdp->sd_glock_disposal)) |
| 993 | wake_up(&sdp->sd_glock_wait); |
| 994 | } |
| 995 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 996 | static const struct lm_lockops nolock_ops = { |
| 997 | .lm_proto_name = "lock_nolock", |
Steven Whitehouse | 8f05228 | 2010-01-29 15:21:27 +0000 | [diff] [blame] | 998 | .lm_put_lock = nolock_put_lock, |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 999 | .lm_tokens = &nolock_tokens, |
| 1000 | }; |
| 1001 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1002 | /** |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1003 | * gfs2_lm_mount - mount a locking protocol |
| 1004 | * @sdp: the filesystem |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 1005 | * @args: mount arguments |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1006 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
| 1007 | * |
| 1008 | * Returns: errno |
| 1009 | */ |
| 1010 | |
| 1011 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) |
| 1012 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1013 | const struct lm_lockops *lm; |
| 1014 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 1015 | struct gfs2_args *args = &sdp->sd_args; |
| 1016 | const char *proto = sdp->sd_proto_name; |
| 1017 | const char *table = sdp->sd_table_name; |
| 1018 | const char *fsname; |
| 1019 | char *o, *options; |
| 1020 | int ret; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1021 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1022 | if (!strcmp("lock_nolock", proto)) { |
| 1023 | lm = &nolock_ops; |
| 1024 | sdp->sd_args.ar_localflocks = 1; |
| 1025 | sdp->sd_args.ar_localcaching = 1; |
| 1026 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
| 1027 | } else if (!strcmp("lock_dlm", proto)) { |
| 1028 | lm = &gfs2_dlm_ops; |
| 1029 | #endif |
| 1030 | } else { |
| 1031 | printk(KERN_INFO "GFS2: can't find protocol %s\n", proto); |
| 1032 | return -ENOENT; |
| 1033 | } |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1034 | |
| 1035 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); |
| 1036 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1037 | ls->ls_ops = lm; |
| 1038 | ls->ls_first = 1; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1039 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1040 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
| 1041 | substring_t tmp[MAX_OPT_ARGS]; |
| 1042 | int token, option; |
| 1043 | |
| 1044 | if (!o || !*o) |
| 1045 | continue; |
| 1046 | |
| 1047 | token = match_token(o, *lm->lm_tokens, tmp); |
| 1048 | switch (token) { |
| 1049 | case Opt_jid: |
| 1050 | ret = match_int(&tmp[0], &option); |
| 1051 | if (ret || option < 0) |
| 1052 | goto hostdata_error; |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 1053 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
| 1054 | ls->ls_jid = option; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1055 | break; |
| 1056 | case Opt_id: |
Steven Whitehouse | 2b88f7c | 2009-09-09 15:59:35 +0100 | [diff] [blame] | 1057 | /* Obsolete, but left for backward compat purposes */ |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1058 | break; |
| 1059 | case Opt_first: |
| 1060 | ret = match_int(&tmp[0], &option); |
| 1061 | if (ret || (option != 0 && option != 1)) |
| 1062 | goto hostdata_error; |
| 1063 | ls->ls_first = option; |
| 1064 | break; |
| 1065 | case Opt_nodir: |
| 1066 | ret = match_int(&tmp[0], &option); |
| 1067 | if (ret || (option != 0 && option != 1)) |
| 1068 | goto hostdata_error; |
| 1069 | ls->ls_nodir = option; |
| 1070 | break; |
| 1071 | case Opt_err: |
| 1072 | default: |
| 1073 | hostdata_error: |
| 1074 | fs_info(sdp, "unknown hostdata (%s)\n", o); |
| 1075 | return -EINVAL; |
| 1076 | } |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1077 | } |
| 1078 | |
| 1079 | if (sdp->sd_args.ar_spectator) |
| 1080 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", table); |
| 1081 | else |
| 1082 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", table, |
| 1083 | sdp->sd_lockstruct.ls_jid); |
| 1084 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1085 | fsname = strchr(table, ':'); |
| 1086 | if (fsname) |
| 1087 | fsname++; |
| 1088 | if (lm->lm_mount == NULL) { |
| 1089 | fs_info(sdp, "Now mounting FS...\n"); |
| 1090 | return 0; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1091 | } |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1092 | ret = lm->lm_mount(sdp, fsname); |
| 1093 | if (ret == 0) |
| 1094 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); |
| 1095 | return ret; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1096 | } |
| 1097 | |
| 1098 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) |
| 1099 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1100 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
| 1101 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) && |
| 1102 | lm->lm_unmount) |
| 1103 | lm->lm_unmount(sdp); |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1104 | } |
| 1105 | |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 1106 | static int gfs2_journalid_wait(void *word) |
| 1107 | { |
| 1108 | if (signal_pending(current)) |
| 1109 | return -EINTR; |
| 1110 | schedule(); |
| 1111 | return 0; |
| 1112 | } |
| 1113 | |
| 1114 | static int wait_on_journal(struct gfs2_sbd *sdp) |
| 1115 | { |
| 1116 | if (sdp->sd_args.ar_spectator) |
| 1117 | return 0; |
| 1118 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
| 1119 | return 0; |
| 1120 | |
| 1121 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, gfs2_journalid_wait, TASK_INTERRUPTIBLE); |
| 1122 | } |
| 1123 | |
Steven Whitehouse | 8633ecf | 2009-07-31 11:07:29 +0100 | [diff] [blame] | 1124 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
| 1125 | { |
| 1126 | struct super_block *sb = sdp->sd_vfs; |
| 1127 | char ro[20]; |
| 1128 | char spectator[20]; |
| 1129 | char *envp[] = { ro, spectator, NULL }; |
| 1130 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); |
| 1131 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
| 1132 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); |
| 1133 | } |
| 1134 | |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1135 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1136 | * fill_super - Read in superblock |
| 1137 | * @sb: The VFS superblock |
| 1138 | * @data: Mount options |
| 1139 | * @silent: Don't complain if it's not a GFS2 filesystem |
| 1140 | * |
| 1141 | * Returns: errno |
| 1142 | */ |
| 1143 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1144 | 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] | 1145 | { |
| 1146 | struct gfs2_sbd *sdp; |
| 1147 | struct gfs2_holder mount_gh; |
| 1148 | int error; |
| 1149 | |
| 1150 | sdp = init_sbd(sb); |
| 1151 | if (!sdp) { |
Steven Whitehouse | d92a8d4 | 2006-02-27 10:57:14 -0500 | [diff] [blame] | 1152 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1153 | return -ENOMEM; |
| 1154 | } |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1155 | sdp->sd_args = *args; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1156 | |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 1157 | if (sdp->sd_args.ar_spectator) { |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1158 | sb->s_flags |= MS_RDONLY; |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 1159 | set_bit(SDF_NORECOVERY, &sdp->sd_flags); |
| 1160 | } |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1161 | if (sdp->sd_args.ar_posix_acl) |
| 1162 | sb->s_flags |= MS_POSIXACL; |
Christoph Hellwig | f25934c | 2009-10-30 08:03:27 +0100 | [diff] [blame] | 1163 | if (sdp->sd_args.ar_nobarrier) |
| 1164 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1165 | |
Steven Whitehouse | 719ee34 | 2008-09-18 13:53:59 +0100 | [diff] [blame] | 1166 | sb->s_magic = GFS2_MAGIC; |
| 1167 | sb->s_op = &gfs2_super_ops; |
| 1168 | sb->s_export_op = &gfs2_export_ops; |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1169 | sb->s_xattr = gfs2_xattr_handlers; |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 1170 | sb->s_qcop = &gfs2_quotactl_ops; |
| 1171 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
Steven Whitehouse | 719ee34 | 2008-09-18 13:53:59 +0100 | [diff] [blame] | 1172 | sb->s_time_gran = 1; |
| 1173 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1174 | |
| 1175 | /* Set up the buffer cache and fill in some fake block size values |
| 1176 | to allow us to read-in the on-disk superblock. */ |
| 1177 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); |
| 1178 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; |
| 1179 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
| 1180 | GFS2_BASIC_BLOCK_SHIFT; |
| 1181 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1182 | |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 1183 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1184 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
| 1185 | if (sdp->sd_args.ar_statfs_quantum) { |
| 1186 | sdp->sd_tune.gt_statfs_slow = 0; |
| 1187 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; |
| 1188 | } |
| 1189 | else { |
| 1190 | sdp->sd_tune.gt_statfs_slow = 1; |
| 1191 | sdp->sd_tune.gt_statfs_quantum = 30; |
| 1192 | } |
Steven Whitehouse | 48c2b61 | 2009-05-13 14:49:48 +0100 | [diff] [blame] | 1193 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1194 | error = init_names(sdp, silent); |
| 1195 | if (error) |
| 1196 | goto fail; |
| 1197 | |
Robert Peterson | 7c52b16 | 2007-03-16 10:26:37 +0000 | [diff] [blame] | 1198 | gfs2_create_debugfs_file(sdp); |
| 1199 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1200 | error = gfs2_sys_fs_add(sdp); |
| 1201 | if (error) |
| 1202 | goto fail; |
| 1203 | |
| 1204 | error = gfs2_lm_mount(sdp, silent); |
| 1205 | if (error) |
| 1206 | goto fail_sys; |
| 1207 | |
| 1208 | error = init_locking(sdp, &mount_gh, DO); |
| 1209 | if (error) |
| 1210 | goto fail_lm; |
| 1211 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1212 | error = init_sb(sdp, silent); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1213 | if (error) |
| 1214 | goto fail_locking; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1215 | |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 1216 | error = wait_on_journal(sdp); |
| 1217 | if (error) |
| 1218 | goto fail_sb; |
| 1219 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1220 | error = init_inodes(sdp, DO); |
| 1221 | if (error) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 1222 | goto fail_sb; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1223 | |
| 1224 | error = init_per_node(sdp, DO); |
| 1225 | if (error) |
| 1226 | goto fail_inodes; |
| 1227 | |
| 1228 | error = gfs2_statfs_init(sdp); |
| 1229 | if (error) { |
| 1230 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); |
| 1231 | goto fail_per_node; |
| 1232 | } |
| 1233 | |
| 1234 | error = init_threads(sdp, DO); |
| 1235 | if (error) |
| 1236 | goto fail_per_node; |
| 1237 | |
| 1238 | if (!(sb->s_flags & MS_RDONLY)) { |
| 1239 | error = gfs2_make_fs_rw(sdp); |
| 1240 | if (error) { |
| 1241 | fs_err(sdp, "can't make FS RW: %d\n", error); |
| 1242 | goto fail_threads; |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | gfs2_glock_dq_uninit(&mount_gh); |
Steven Whitehouse | 8633ecf | 2009-07-31 11:07:29 +0100 | [diff] [blame] | 1247 | gfs2_online_uevent(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1248 | return 0; |
| 1249 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1250 | fail_threads: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1251 | init_threads(sdp, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1252 | fail_per_node: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1253 | init_per_node(sdp, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1254 | fail_inodes: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1255 | init_inodes(sdp, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1256 | fail_sb: |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1257 | if (sdp->sd_root_dir) |
| 1258 | dput(sdp->sd_root_dir); |
| 1259 | if (sdp->sd_master_dir) |
| 1260 | dput(sdp->sd_master_dir); |
Steven Whitehouse | e7c8707 | 2009-01-20 16:39:23 +0000 | [diff] [blame] | 1261 | if (sb->s_root) |
| 1262 | dput(sb->s_root); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1263 | sb->s_root = NULL; |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1264 | fail_locking: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1265 | init_locking(sdp, &mount_gh, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1266 | fail_lm: |
Steven Whitehouse | c1184f8 | 2010-01-08 16:14:29 +0000 | [diff] [blame] | 1267 | invalidate_inodes(sb); |
Steven Whitehouse | fefc03b | 2008-12-19 15:32:06 +0000 | [diff] [blame] | 1268 | gfs2_gl_hash_clear(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1269 | gfs2_lm_unmount(sdp); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1270 | fail_sys: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1271 | gfs2_sys_fs_del(sdp); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1272 | fail: |
Robert Peterson | 5f88209 | 2007-04-18 11:41:11 -0500 | [diff] [blame] | 1273 | gfs2_delete_debugfs_file(sdp); |
Steven Whitehouse | a2c4580 | 2006-09-08 10:13:03 -0400 | [diff] [blame] | 1274 | kfree(sdp); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 1275 | sb->s_fs_info = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1276 | return error; |
| 1277 | } |
| 1278 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1279 | static int set_gfs2_super(struct super_block *s, void *data) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1280 | { |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1281 | s->s_bdev = data; |
| 1282 | s->s_dev = s->s_bdev->bd_dev; |
| 1283 | |
| 1284 | /* |
| 1285 | * We set the bdi here to the queue backing, file systems can |
| 1286 | * overwrite this in ->fill_super() |
| 1287 | */ |
| 1288 | s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info; |
| 1289 | return 0; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1290 | } |
| 1291 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1292 | static int test_gfs2_super(struct super_block *s, void *ptr) |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1293 | { |
| 1294 | struct block_device *bdev = ptr; |
| 1295 | return (bdev == s->s_bdev); |
| 1296 | } |
| 1297 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1298 | /** |
| 1299 | * gfs2_get_sb - Get the GFS2 superblock |
| 1300 | * @fs_type: The GFS2 filesystem type |
| 1301 | * @flags: Mount flags |
| 1302 | * @dev_name: The name of the device |
| 1303 | * @data: The mount arguments |
| 1304 | * @mnt: The vfsmnt for this mount |
| 1305 | * |
| 1306 | * Q. Why not use get_sb_bdev() ? |
| 1307 | * A. We need to select one of two root directories to mount, independent |
| 1308 | * of whether this is the initial, or subsequent, mount of this sb |
| 1309 | * |
| 1310 | * Returns: 0 or -ve on error |
| 1311 | */ |
| 1312 | |
| 1313 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
| 1314 | const char *dev_name, void *data, struct vfsmount *mnt) |
| 1315 | { |
| 1316 | struct block_device *bdev; |
| 1317 | struct super_block *s; |
| 1318 | fmode_t mode = FMODE_READ; |
| 1319 | int error; |
| 1320 | struct gfs2_args args; |
| 1321 | struct gfs2_sbd *sdp; |
| 1322 | |
| 1323 | if (!(flags & MS_RDONLY)) |
| 1324 | mode |= FMODE_WRITE; |
| 1325 | |
| 1326 | bdev = open_bdev_exclusive(dev_name, mode, fs_type); |
| 1327 | if (IS_ERR(bdev)) |
| 1328 | return PTR_ERR(bdev); |
| 1329 | |
| 1330 | /* |
| 1331 | * once the super is inserted into the list by sget, s_umount |
| 1332 | * will protect the lockfs code from trying to start a snapshot |
| 1333 | * while we are mounting |
| 1334 | */ |
| 1335 | mutex_lock(&bdev->bd_fsfreeze_mutex); |
| 1336 | if (bdev->bd_fsfreeze_count > 0) { |
| 1337 | mutex_unlock(&bdev->bd_fsfreeze_mutex); |
| 1338 | error = -EBUSY; |
| 1339 | goto error_bdev; |
| 1340 | } |
| 1341 | s = sget(fs_type, test_gfs2_super, set_gfs2_super, bdev); |
| 1342 | mutex_unlock(&bdev->bd_fsfreeze_mutex); |
| 1343 | error = PTR_ERR(s); |
| 1344 | if (IS_ERR(s)) |
| 1345 | goto error_bdev; |
| 1346 | |
| 1347 | memset(&args, 0, sizeof(args)); |
| 1348 | args.ar_quota = GFS2_QUOTA_DEFAULT; |
| 1349 | args.ar_data = GFS2_DATA_DEFAULT; |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 1350 | args.ar_commit = 30; |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1351 | args.ar_statfs_quantum = 30; |
| 1352 | args.ar_quota_quantum = 60; |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1353 | args.ar_errors = GFS2_ERRORS_DEFAULT; |
| 1354 | |
| 1355 | error = gfs2_mount_args(&args, data); |
| 1356 | if (error) { |
| 1357 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
| 1358 | if (s->s_root) |
| 1359 | goto error_super; |
| 1360 | deactivate_locked_super(s); |
| 1361 | return error; |
| 1362 | } |
| 1363 | |
| 1364 | if (s->s_root) { |
| 1365 | error = -EBUSY; |
| 1366 | if ((flags ^ s->s_flags) & MS_RDONLY) |
| 1367 | goto error_super; |
| 1368 | close_bdev_exclusive(bdev, mode); |
| 1369 | } else { |
| 1370 | char b[BDEVNAME_SIZE]; |
| 1371 | |
| 1372 | s->s_flags = flags; |
| 1373 | s->s_mode = mode; |
| 1374 | strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id)); |
| 1375 | sb_set_blocksize(s, block_size(bdev)); |
| 1376 | error = fill_super(s, &args, flags & MS_SILENT ? 1 : 0); |
| 1377 | if (error) { |
| 1378 | deactivate_locked_super(s); |
| 1379 | return error; |
| 1380 | } |
| 1381 | s->s_flags |= MS_ACTIVE; |
| 1382 | bdev->bd_super = s; |
| 1383 | } |
| 1384 | |
| 1385 | sdp = s->s_fs_info; |
| 1386 | mnt->mnt_sb = s; |
| 1387 | if (args.ar_meta) |
| 1388 | mnt->mnt_root = dget(sdp->sd_master_dir); |
| 1389 | else |
| 1390 | mnt->mnt_root = dget(sdp->sd_root_dir); |
| 1391 | return 0; |
| 1392 | |
| 1393 | error_super: |
| 1394 | deactivate_locked_super(s); |
| 1395 | error_bdev: |
| 1396 | close_bdev_exclusive(bdev, mode); |
| 1397 | return error; |
| 1398 | } |
| 1399 | |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1400 | static int set_meta_super(struct super_block *s, void *ptr) |
| 1401 | { |
| 1402 | return -EINVAL; |
| 1403 | } |
| 1404 | |
Steven Whitehouse | 003dec8 | 2009-06-10 10:31:45 +0100 | [diff] [blame] | 1405 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, |
| 1406 | const char *dev_name, void *data, struct vfsmount *mnt) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1407 | { |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1408 | struct super_block *s; |
Steven Whitehouse | 003dec8 | 2009-06-10 10:31:45 +0100 | [diff] [blame] | 1409 | struct gfs2_sbd *sdp; |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1410 | struct path path; |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1411 | int error; |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 1412 | |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1413 | error = kern_path(dev_name, LOOKUP_FOLLOW, &path); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1414 | if (error) { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1415 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n", |
| 1416 | dev_name, error); |
Steven Whitehouse | 003dec8 | 2009-06-10 10:31:45 +0100 | [diff] [blame] | 1417 | return error; |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1418 | } |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1419 | s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1420 | path.dentry->d_inode->i_sb->s_bdev); |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1421 | path_put(&path); |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1422 | if (IS_ERR(s)) { |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1423 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1424 | return PTR_ERR(s); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1425 | } |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1426 | if ((flags ^ s->s_flags) & MS_RDONLY) { |
| 1427 | deactivate_locked_super(s); |
| 1428 | return -EBUSY; |
| 1429 | } |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1430 | sdp = s->s_fs_info; |
| 1431 | mnt->mnt_sb = s; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1432 | mnt->mnt_root = dget(sdp->sd_master_dir); |
| 1433 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1434 | } |
| 1435 | |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1436 | static void gfs2_kill_sb(struct super_block *sb) |
| 1437 | { |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1438 | struct gfs2_sbd *sdp = sb->s_fs_info; |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1439 | |
| 1440 | if (sdp == NULL) { |
| 1441 | kill_block_super(sb); |
| 1442 | return; |
Abhijith Das | acd2c8a | 2008-09-15 08:54:06 -0500 | [diff] [blame] | 1443 | } |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1444 | |
| 1445 | gfs2_meta_syncfs(sdp); |
| 1446 | dput(sdp->sd_root_dir); |
| 1447 | dput(sdp->sd_master_dir); |
| 1448 | sdp->sd_root_dir = NULL; |
| 1449 | sdp->sd_master_dir = NULL; |
Steven Whitehouse | fefc03b | 2008-12-19 15:32:06 +0000 | [diff] [blame] | 1450 | shrink_dcache_sb(sb); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1451 | kill_block_super(sb); |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1452 | gfs2_delete_debugfs_file(sdp); |
| 1453 | kfree(sdp); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1454 | } |
| 1455 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1456 | struct file_system_type gfs2_fs_type = { |
| 1457 | .name = "gfs2", |
| 1458 | .fs_flags = FS_REQUIRES_DEV, |
| 1459 | .get_sb = gfs2_get_sb, |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1460 | .kill_sb = gfs2_kill_sb, |
| 1461 | .owner = THIS_MODULE, |
| 1462 | }; |
| 1463 | |
| 1464 | struct file_system_type gfs2meta_fs_type = { |
| 1465 | .name = "gfs2meta", |
| 1466 | .fs_flags = FS_REQUIRES_DEV, |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1467 | .get_sb = gfs2_get_sb_meta, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1468 | .owner = THIS_MODULE, |
| 1469 | }; |
| 1470 | |