Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1 | /* -*- mode: c; c-basic-offset: 8; -*- |
| 2 | * vim: noexpandtab sw=8 ts=8 sts=0: |
| 3 | * |
| 4 | * inode.c |
| 5 | * |
| 6 | * vfs' aops, fops, dops and iops |
| 7 | * |
| 8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public |
| 12 | * License as published by the Free Software Foundation; either |
| 13 | * version 2 of the License, or (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public |
| 21 | * License along with this program; if not, write to the |
| 22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 23 | * Boston, MA 021110-1307, USA. |
| 24 | */ |
| 25 | |
| 26 | #include <linux/fs.h> |
| 27 | #include <linux/types.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/highmem.h> |
| 30 | #include <linux/pagemap.h> |
| 31 | #include <linux/smp_lock.h> |
| 32 | |
| 33 | #include <asm/byteorder.h> |
| 34 | |
| 35 | #define MLOG_MASK_PREFIX ML_INODE |
| 36 | #include <cluster/masklog.h> |
| 37 | |
| 38 | #include "ocfs2.h" |
| 39 | |
| 40 | #include "alloc.h" |
| 41 | #include "dlmglue.h" |
| 42 | #include "extent_map.h" |
| 43 | #include "file.h" |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 44 | #include "heartbeat.h" |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 45 | #include "inode.h" |
| 46 | #include "journal.h" |
| 47 | #include "namei.h" |
| 48 | #include "suballoc.h" |
| 49 | #include "super.h" |
| 50 | #include "symlink.h" |
| 51 | #include "sysfile.h" |
| 52 | #include "uptodate.h" |
| 53 | #include "vote.h" |
| 54 | |
| 55 | #include "buffer_head_io.h" |
| 56 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 57 | struct ocfs2_find_inode_args |
| 58 | { |
| 59 | u64 fi_blkno; |
| 60 | unsigned long fi_ino; |
| 61 | unsigned int fi_flags; |
| 62 | }; |
| 63 | |
| 64 | static int ocfs2_read_locked_inode(struct inode *inode, |
| 65 | struct ocfs2_find_inode_args *args); |
| 66 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque); |
| 67 | static int ocfs2_find_actor(struct inode *inode, void *opaque); |
| 68 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, |
| 69 | struct inode *inode, |
| 70 | struct buffer_head *fe_bh); |
| 71 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 72 | void ocfs2_set_inode_flags(struct inode *inode) |
| 73 | { |
| 74 | unsigned int flags = OCFS2_I(inode)->ip_attr; |
| 75 | |
| 76 | inode->i_flags &= ~(S_IMMUTABLE | |
| 77 | S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC); |
| 78 | |
| 79 | if (flags & OCFS2_IMMUTABLE_FL) |
| 80 | inode->i_flags |= S_IMMUTABLE; |
| 81 | |
| 82 | if (flags & OCFS2_SYNC_FL) |
| 83 | inode->i_flags |= S_SYNC; |
| 84 | if (flags & OCFS2_APPEND_FL) |
| 85 | inode->i_flags |= S_APPEND; |
| 86 | if (flags & OCFS2_NOATIME_FL) |
| 87 | inode->i_flags |= S_NOATIME; |
| 88 | if (flags & OCFS2_DIRSYNC_FL) |
| 89 | inode->i_flags |= S_DIRSYNC; |
| 90 | } |
| 91 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 92 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, int flags) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 93 | { |
| 94 | struct inode *inode = NULL; |
| 95 | struct super_block *sb = osb->sb; |
| 96 | struct ocfs2_find_inode_args args; |
| 97 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 98 | mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 99 | |
| 100 | /* Ok. By now we've either got the offsets passed to us by the |
| 101 | * caller, or we just pulled them off the bh. Lets do some |
| 102 | * sanity checks to make sure they're OK. */ |
| 103 | if (blkno == 0) { |
| 104 | inode = ERR_PTR(-EINVAL); |
| 105 | mlog_errno(PTR_ERR(inode)); |
| 106 | goto bail; |
| 107 | } |
| 108 | |
| 109 | args.fi_blkno = blkno; |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 110 | args.fi_flags = flags; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 111 | args.fi_ino = ino_from_blkno(sb, blkno); |
| 112 | |
| 113 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, |
| 114 | ocfs2_init_locked_inode, &args); |
| 115 | /* inode was *not* in the inode cache. 2.6.x requires |
| 116 | * us to do our own read_inode call and unlock it |
| 117 | * afterwards. */ |
| 118 | if (inode && inode->i_state & I_NEW) { |
| 119 | mlog(0, "Inode was not in inode cache, reading it.\n"); |
| 120 | ocfs2_read_locked_inode(inode, &args); |
| 121 | unlock_new_inode(inode); |
| 122 | } |
| 123 | if (inode == NULL) { |
| 124 | inode = ERR_PTR(-ENOMEM); |
| 125 | mlog_errno(PTR_ERR(inode)); |
| 126 | goto bail; |
| 127 | } |
| 128 | if (is_bad_inode(inode)) { |
| 129 | iput(inode); |
| 130 | inode = ERR_PTR(-ESTALE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 131 | goto bail; |
| 132 | } |
| 133 | |
| 134 | bail: |
| 135 | if (!IS_ERR(inode)) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 136 | mlog(0, "returning inode with number %llu\n", |
| 137 | (unsigned long long)OCFS2_I(inode)->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 138 | mlog_exit_ptr(inode); |
Mark Fasheh | 6a1bd4a | 2007-01-03 17:06:59 -0800 | [diff] [blame] | 139 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 140 | |
| 141 | return inode; |
| 142 | } |
| 143 | |
| 144 | |
| 145 | /* |
| 146 | * here's how inodes get read from disk: |
| 147 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR |
| 148 | * found? : return the in-memory inode |
| 149 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE |
| 150 | */ |
| 151 | |
| 152 | static int ocfs2_find_actor(struct inode *inode, void *opaque) |
| 153 | { |
| 154 | struct ocfs2_find_inode_args *args = NULL; |
| 155 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 156 | int ret = 0; |
| 157 | |
| 158 | mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque); |
| 159 | |
| 160 | args = opaque; |
| 161 | |
| 162 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); |
| 163 | |
| 164 | if (oi->ip_blkno != args->fi_blkno) |
| 165 | goto bail; |
| 166 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 167 | ret = 1; |
| 168 | bail: |
| 169 | mlog_exit(ret); |
| 170 | return ret; |
| 171 | } |
| 172 | |
| 173 | /* |
| 174 | * initialize the new inode, but don't do anything that would cause |
| 175 | * us to sleep. |
| 176 | * return 0 on success, 1 on failure |
| 177 | */ |
| 178 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) |
| 179 | { |
| 180 | struct ocfs2_find_inode_args *args = opaque; |
| 181 | |
| 182 | mlog_entry("inode = %p, opaque = %p\n", inode, opaque); |
| 183 | |
| 184 | inode->i_ino = args->fi_ino; |
| 185 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; |
| 186 | |
| 187 | mlog_exit(0); |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
| 192 | int create_ino) |
| 193 | { |
| 194 | struct super_block *sb; |
| 195 | struct ocfs2_super *osb; |
| 196 | int status = -EINVAL; |
| 197 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 198 | mlog_entry("(0x%p, size:%llu)\n", inode, |
| 199 | (unsigned long long)fe->i_size); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 200 | |
| 201 | sb = inode->i_sb; |
| 202 | osb = OCFS2_SB(sb); |
| 203 | |
| 204 | /* this means that read_inode cannot create a superblock inode |
| 205 | * today. change if needed. */ |
| 206 | if (!OCFS2_IS_VALID_DINODE(fe) || |
| 207 | !(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { |
Mark Fasheh | 6a1bd4a | 2007-01-03 17:06:59 -0800 | [diff] [blame] | 208 | mlog(0, "Invalid dinode: i_ino=%lu, i_blkno=%llu, " |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 209 | "signature = %.*s, flags = 0x%x\n", |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 210 | inode->i_ino, |
| 211 | (unsigned long long)le64_to_cpu(fe->i_blkno), 7, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 212 | fe->i_signature, le32_to_cpu(fe->i_flags)); |
| 213 | goto bail; |
| 214 | } |
| 215 | |
| 216 | if (le32_to_cpu(fe->i_fs_generation) != osb->fs_generation) { |
| 217 | mlog(ML_ERROR, "file entry generation does not match " |
| 218 | "superblock! osb->fs_generation=%x, " |
| 219 | "fe->i_fs_generation=%x\n", |
| 220 | osb->fs_generation, le32_to_cpu(fe->i_fs_generation)); |
| 221 | goto bail; |
| 222 | } |
| 223 | |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame^] | 224 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
| 225 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
| 226 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 227 | inode->i_version = 1; |
| 228 | inode->i_generation = le32_to_cpu(fe->i_generation); |
| 229 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
| 230 | inode->i_mode = le16_to_cpu(fe->i_mode); |
| 231 | inode->i_uid = le32_to_cpu(fe->i_uid); |
| 232 | inode->i_gid = le32_to_cpu(fe->i_gid); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 233 | |
| 234 | /* Fast symlinks will have i_size but no allocated clusters. */ |
| 235 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) |
| 236 | inode->i_blocks = 0; |
| 237 | else |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame^] | 238 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 239 | inode->i_mapping->a_ops = &ocfs2_aops; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 240 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
| 241 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); |
| 242 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); |
| 243 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); |
| 244 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); |
| 245 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); |
| 246 | |
| 247 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) |
| 248 | mlog(ML_ERROR, |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 249 | "ip_blkno %llu != i_blkno %llu!\n", |
| 250 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
| 251 | (unsigned long long)fe->i_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 252 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 253 | inode->i_nlink = le16_to_cpu(fe->i_links_count); |
| 254 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 255 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) |
| 256 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; |
| 257 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 258 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
| 259 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; |
| 260 | mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino); |
| 261 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { |
| 262 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; |
| 263 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { |
| 264 | mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino); |
| 265 | /* we can't actually hit this as read_inode can't |
| 266 | * handle superblocks today ;-) */ |
| 267 | BUG(); |
| 268 | } |
| 269 | |
| 270 | switch (inode->i_mode & S_IFMT) { |
| 271 | case S_IFREG: |
| 272 | inode->i_fop = &ocfs2_fops; |
| 273 | inode->i_op = &ocfs2_file_iops; |
| 274 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 275 | break; |
| 276 | case S_IFDIR: |
| 277 | inode->i_op = &ocfs2_dir_iops; |
| 278 | inode->i_fop = &ocfs2_dops; |
| 279 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 280 | break; |
| 281 | case S_IFLNK: |
| 282 | if (ocfs2_inode_is_fast_symlink(inode)) |
| 283 | inode->i_op = &ocfs2_fast_symlink_inode_operations; |
| 284 | else |
| 285 | inode->i_op = &ocfs2_symlink_inode_operations; |
| 286 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 287 | break; |
| 288 | default: |
| 289 | inode->i_op = &ocfs2_special_file_iops; |
| 290 | init_special_inode(inode, inode->i_mode, |
| 291 | inode->i_rdev); |
| 292 | break; |
| 293 | } |
| 294 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 295 | if (create_ino) { |
| 296 | inode->i_ino = ino_from_blkno(inode->i_sb, |
| 297 | le64_to_cpu(fe->i_blkno)); |
| 298 | |
| 299 | /* |
| 300 | * If we ever want to create system files from kernel, |
| 301 | * the generation argument to |
| 302 | * ocfs2_inode_lock_res_init() will have to change. |
| 303 | */ |
| 304 | BUG_ON(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)); |
| 305 | |
| 306 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres, |
| 307 | OCFS2_LOCK_TYPE_META, 0, inode); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 308 | |
| 309 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
| 310 | OCFS2_LOCK_TYPE_OPEN, 0, inode); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 311 | } |
| 312 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 313 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 314 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
| 315 | inode); |
| 316 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 317 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_data_lockres, |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 318 | OCFS2_LOCK_TYPE_DATA, inode->i_generation, |
| 319 | inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 320 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 321 | ocfs2_set_inode_flags(inode); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 322 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 323 | status = 0; |
| 324 | bail: |
| 325 | mlog_exit(status); |
| 326 | return status; |
| 327 | } |
| 328 | |
| 329 | static int ocfs2_read_locked_inode(struct inode *inode, |
| 330 | struct ocfs2_find_inode_args *args) |
| 331 | { |
| 332 | struct super_block *sb; |
| 333 | struct ocfs2_super *osb; |
| 334 | struct ocfs2_dinode *fe; |
| 335 | struct buffer_head *bh = NULL; |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 336 | int status, can_lock; |
| 337 | u32 generation = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 338 | |
| 339 | mlog_entry("(0x%p, 0x%p)\n", inode, args); |
| 340 | |
| 341 | status = -EINVAL; |
| 342 | if (inode == NULL || inode->i_sb == NULL) { |
| 343 | mlog(ML_ERROR, "bad inode\n"); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 344 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 345 | } |
| 346 | sb = inode->i_sb; |
| 347 | osb = OCFS2_SB(sb); |
| 348 | |
| 349 | if (!args) { |
| 350 | mlog(ML_ERROR, "bad inode args\n"); |
| 351 | make_bad_inode(inode); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 352 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 353 | } |
| 354 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 355 | /* |
| 356 | * To improve performance of cold-cache inode stats, we take |
| 357 | * the cluster lock here if possible. |
| 358 | * |
| 359 | * Generally, OCFS2 never trusts the contents of an inode |
| 360 | * unless it's holding a cluster lock, so taking it here isn't |
| 361 | * a correctness issue as much as it is a performance |
| 362 | * improvement. |
| 363 | * |
| 364 | * There are three times when taking the lock is not a good idea: |
| 365 | * |
| 366 | * 1) During startup, before we have initialized the DLM. |
| 367 | * |
| 368 | * 2) If we are reading certain system files which never get |
| 369 | * cluster locks (local alloc, truncate log). |
| 370 | * |
| 371 | * 3) If the process doing the iget() is responsible for |
| 372 | * orphan dir recovery. We're holding the orphan dir lock and |
| 373 | * can get into a deadlock with another process on another |
| 374 | * node in ->delete_inode(). |
| 375 | * |
| 376 | * #1 and #2 can be simply solved by never taking the lock |
| 377 | * here for system files (which are the only type we read |
| 378 | * during mount). It's a heavier approach, but our main |
| 379 | * concern is user-accesible files anyway. |
| 380 | * |
| 381 | * #3 works itself out because we'll eventually take the |
| 382 | * cluster lock before trusting anything anyway. |
| 383 | */ |
| 384 | can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE) |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 385 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
Sunil Mushran | c271c5c | 2006-12-05 17:56:35 -0800 | [diff] [blame] | 386 | && !ocfs2_mount_local(osb); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 387 | |
| 388 | /* |
| 389 | * To maintain backwards compatibility with older versions of |
| 390 | * ocfs2-tools, we still store the generation value for system |
| 391 | * files. The only ones that actually matter to userspace are |
| 392 | * the journals, but it's easier and inexpensive to just flag |
| 393 | * all system files similarly. |
| 394 | */ |
| 395 | if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE) |
| 396 | generation = osb->fs_generation; |
| 397 | |
| 398 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres, |
| 399 | OCFS2_LOCK_TYPE_META, |
| 400 | generation, inode); |
| 401 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 402 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
| 403 | OCFS2_LOCK_TYPE_OPEN, |
| 404 | 0, inode); |
| 405 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 406 | if (can_lock) { |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 407 | status = ocfs2_open_lock(inode); |
| 408 | if (status) { |
| 409 | make_bad_inode(inode); |
| 410 | mlog_errno(status); |
| 411 | return status; |
| 412 | } |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 413 | status = ocfs2_meta_lock(inode, NULL, 0); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 414 | if (status) { |
| 415 | make_bad_inode(inode); |
| 416 | mlog_errno(status); |
| 417 | return status; |
| 418 | } |
| 419 | } |
| 420 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 421 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
| 422 | status = ocfs2_try_open_lock(inode, 0); |
| 423 | if (status) { |
| 424 | make_bad_inode(inode); |
| 425 | return status; |
| 426 | } |
| 427 | } |
| 428 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 429 | status = ocfs2_read_block(osb, args->fi_blkno, &bh, 0, |
| 430 | can_lock ? inode : NULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 431 | if (status < 0) { |
| 432 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 433 | goto bail; |
| 434 | } |
| 435 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 436 | status = -EINVAL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 437 | fe = (struct ocfs2_dinode *) bh->b_data; |
| 438 | if (!OCFS2_IS_VALID_DINODE(fe)) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 439 | mlog(ML_ERROR, "Invalid dinode #%llu: signature = %.*s\n", |
| 440 | (unsigned long long)fe->i_blkno, 7, fe->i_signature); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 441 | goto bail; |
| 442 | } |
| 443 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 444 | /* |
| 445 | * This is a code bug. Right now the caller needs to |
| 446 | * understand whether it is asking for a system file inode or |
| 447 | * not so the proper lock names can be built. |
| 448 | */ |
| 449 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != |
| 450 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), |
| 451 | "Inode %llu: system file state is ambigous\n", |
| 452 | (unsigned long long)args->fi_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 453 | |
| 454 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || |
| 455 | S_ISBLK(le16_to_cpu(fe->i_mode))) |
| 456 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
| 457 | |
Mark Fasheh | 6a1bd4a | 2007-01-03 17:06:59 -0800 | [diff] [blame] | 458 | if (ocfs2_populate_inode(inode, fe, 0) < 0) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 459 | goto bail; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 460 | |
| 461 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); |
| 462 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 463 | status = 0; |
| 464 | |
| 465 | bail: |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 466 | if (can_lock) |
| 467 | ocfs2_meta_unlock(inode, 0); |
| 468 | |
| 469 | if (status < 0) |
| 470 | make_bad_inode(inode); |
| 471 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 472 | if (args && bh) |
| 473 | brelse(bh); |
| 474 | |
| 475 | mlog_exit(status); |
| 476 | return status; |
| 477 | } |
| 478 | |
| 479 | void ocfs2_sync_blockdev(struct super_block *sb) |
| 480 | { |
| 481 | sync_blockdev(sb->s_bdev); |
| 482 | } |
| 483 | |
| 484 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, |
| 485 | struct inode *inode, |
| 486 | struct buffer_head *fe_bh) |
| 487 | { |
| 488 | int status = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 489 | struct ocfs2_truncate_context *tc = NULL; |
| 490 | struct ocfs2_dinode *fe; |
Mark Fasheh | 60b1139 | 2007-02-16 11:46:50 -0800 | [diff] [blame] | 491 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 492 | |
| 493 | mlog_entry_void(); |
| 494 | |
| 495 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
| 496 | |
Mark Fasheh | 3a0782d | 2007-01-17 12:53:31 -0800 | [diff] [blame] | 497 | if (fe->i_clusters) { |
Mark Fasheh | 60b1139 | 2007-02-16 11:46:50 -0800 | [diff] [blame] | 498 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
| 499 | if (IS_ERR(handle)) { |
| 500 | status = PTR_ERR(handle); |
| 501 | mlog_errno(status); |
| 502 | goto out; |
| 503 | } |
| 504 | |
| 505 | status = ocfs2_journal_access(handle, inode, fe_bh, |
| 506 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 507 | if (status < 0) { |
| 508 | mlog_errno(status); |
| 509 | goto out; |
| 510 | } |
| 511 | |
| 512 | i_size_write(inode, 0); |
| 513 | |
| 514 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); |
| 515 | if (status < 0) { |
| 516 | mlog_errno(status); |
| 517 | goto out; |
| 518 | } |
| 519 | |
| 520 | ocfs2_commit_trans(osb, handle); |
| 521 | handle = NULL; |
| 522 | |
Mark Fasheh | 3a0782d | 2007-01-17 12:53:31 -0800 | [diff] [blame] | 523 | status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc); |
| 524 | if (status < 0) { |
| 525 | mlog_errno(status); |
| 526 | goto out; |
| 527 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 528 | |
Mark Fasheh | 3a0782d | 2007-01-17 12:53:31 -0800 | [diff] [blame] | 529 | status = ocfs2_commit_truncate(osb, inode, fe_bh, tc); |
| 530 | if (status < 0) { |
| 531 | mlog_errno(status); |
| 532 | goto out; |
| 533 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 534 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 535 | |
Mark Fasheh | 60b1139 | 2007-02-16 11:46:50 -0800 | [diff] [blame] | 536 | out: |
| 537 | if (handle) |
| 538 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 539 | mlog_exit(status); |
| 540 | return status; |
| 541 | } |
| 542 | |
| 543 | static int ocfs2_remove_inode(struct inode *inode, |
| 544 | struct buffer_head *di_bh, |
| 545 | struct inode *orphan_dir_inode, |
| 546 | struct buffer_head *orphan_dir_bh) |
| 547 | { |
| 548 | int status; |
| 549 | struct inode *inode_alloc_inode = NULL; |
| 550 | struct buffer_head *inode_alloc_bh = NULL; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 551 | handle_t *handle; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 552 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 553 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; |
| 554 | |
| 555 | inode_alloc_inode = |
| 556 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, |
| 557 | le16_to_cpu(di->i_suballoc_slot)); |
| 558 | if (!inode_alloc_inode) { |
| 559 | status = -EEXIST; |
| 560 | mlog_errno(status); |
| 561 | goto bail; |
| 562 | } |
| 563 | |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 564 | mutex_lock(&inode_alloc_inode->i_mutex); |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 565 | status = ocfs2_meta_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 566 | if (status < 0) { |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 567 | mutex_unlock(&inode_alloc_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 568 | |
| 569 | mlog_errno(status); |
| 570 | goto bail; |
| 571 | } |
| 572 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 573 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 574 | if (IS_ERR(handle)) { |
| 575 | status = PTR_ERR(handle); |
| 576 | mlog_errno(status); |
| 577 | goto bail_unlock; |
| 578 | } |
| 579 | |
| 580 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, |
| 581 | orphan_dir_bh); |
| 582 | if (status < 0) { |
| 583 | mlog_errno(status); |
| 584 | goto bail_commit; |
| 585 | } |
| 586 | |
| 587 | /* set the inodes dtime */ |
| 588 | status = ocfs2_journal_access(handle, inode, di_bh, |
| 589 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 590 | if (status < 0) { |
| 591 | mlog_errno(status); |
| 592 | goto bail_commit; |
| 593 | } |
| 594 | |
| 595 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); |
| 596 | le32_and_cpu(&di->i_flags, ~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
| 597 | |
| 598 | status = ocfs2_journal_dirty(handle, di_bh); |
| 599 | if (status < 0) { |
| 600 | mlog_errno(status); |
| 601 | goto bail_commit; |
| 602 | } |
| 603 | |
| 604 | ocfs2_remove_from_cache(inode, di_bh); |
| 605 | |
| 606 | status = ocfs2_free_dinode(handle, inode_alloc_inode, |
| 607 | inode_alloc_bh, di); |
| 608 | if (status < 0) |
| 609 | mlog_errno(status); |
| 610 | |
| 611 | bail_commit: |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 612 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 613 | bail_unlock: |
| 614 | ocfs2_meta_unlock(inode_alloc_inode, 1); |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 615 | mutex_unlock(&inode_alloc_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 616 | brelse(inode_alloc_bh); |
| 617 | bail: |
| 618 | iput(inode_alloc_inode); |
| 619 | |
| 620 | return status; |
| 621 | } |
| 622 | |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 623 | /* |
| 624 | * Serialize with orphan dir recovery. If the process doing |
| 625 | * recovery on this orphan dir does an iget() with the dir |
| 626 | * i_mutex held, we'll deadlock here. Instead we detect this |
| 627 | * and exit early - recovery will wipe this inode for us. |
| 628 | */ |
| 629 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, |
| 630 | int slot) |
| 631 | { |
| 632 | int ret = 0; |
| 633 | |
| 634 | spin_lock(&osb->osb_lock); |
| 635 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { |
| 636 | mlog(0, "Recovery is happening on orphan dir %d, will skip " |
| 637 | "this inode\n", slot); |
| 638 | ret = -EDEADLK; |
| 639 | goto out; |
| 640 | } |
| 641 | /* This signals to the orphan recovery process that it should |
| 642 | * wait for us to handle the wipe. */ |
| 643 | osb->osb_orphan_wipes[slot]++; |
| 644 | out: |
| 645 | spin_unlock(&osb->osb_lock); |
| 646 | return ret; |
| 647 | } |
| 648 | |
| 649 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, |
| 650 | int slot) |
| 651 | { |
| 652 | spin_lock(&osb->osb_lock); |
| 653 | osb->osb_orphan_wipes[slot]--; |
| 654 | spin_unlock(&osb->osb_lock); |
| 655 | |
| 656 | wake_up(&osb->osb_wipe_event); |
| 657 | } |
| 658 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 659 | static int ocfs2_wipe_inode(struct inode *inode, |
| 660 | struct buffer_head *di_bh) |
| 661 | { |
| 662 | int status, orphaned_slot; |
| 663 | struct inode *orphan_dir_inode = NULL; |
| 664 | struct buffer_head *orphan_dir_bh = NULL; |
| 665 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 666 | struct ocfs2_dinode *di; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 667 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 668 | di = (struct ocfs2_dinode *) di_bh->b_data; |
| 669 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 670 | |
| 671 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); |
| 672 | if (status) |
| 673 | return status; |
| 674 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 675 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
| 676 | ORPHAN_DIR_SYSTEM_INODE, |
| 677 | orphaned_slot); |
| 678 | if (!orphan_dir_inode) { |
| 679 | status = -EEXIST; |
| 680 | mlog_errno(status); |
| 681 | goto bail; |
| 682 | } |
| 683 | |
| 684 | /* Lock the orphan dir. The lock will be held for the entire |
| 685 | * delete_inode operation. We do this now to avoid races with |
| 686 | * recovery completion on other nodes. */ |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 687 | mutex_lock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 688 | status = ocfs2_meta_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 689 | if (status < 0) { |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 690 | mutex_unlock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 691 | |
| 692 | mlog_errno(status); |
| 693 | goto bail; |
| 694 | } |
| 695 | |
| 696 | /* we do this while holding the orphan dir lock because we |
| 697 | * don't want recovery being run from another node to vote for |
| 698 | * an inode delete on us -- this will result in two nodes |
| 699 | * truncating the same file! */ |
| 700 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); |
| 701 | if (status < 0) { |
| 702 | mlog_errno(status); |
| 703 | goto bail_unlock_dir; |
| 704 | } |
| 705 | |
| 706 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
| 707 | orphan_dir_bh); |
| 708 | if (status < 0) |
| 709 | mlog_errno(status); |
| 710 | |
| 711 | bail_unlock_dir: |
| 712 | ocfs2_meta_unlock(orphan_dir_inode, 1); |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 713 | mutex_unlock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 714 | brelse(orphan_dir_bh); |
| 715 | bail: |
| 716 | iput(orphan_dir_inode); |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 717 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 718 | |
| 719 | return status; |
| 720 | } |
| 721 | |
| 722 | /* There is a series of simple checks that should be done before a |
| 723 | * vote is even considered. Encapsulate those in this function. */ |
| 724 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
| 725 | { |
| 726 | int ret = 0; |
| 727 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 728 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 729 | |
| 730 | /* We shouldn't be getting here for the root directory |
| 731 | * inode.. */ |
| 732 | if (inode == osb->root_inode) { |
| 733 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); |
| 734 | goto bail; |
| 735 | } |
| 736 | |
| 737 | /* If we're coming from process_vote we can't go into our own |
| 738 | * voting [hello, deadlock city!], so unforuntately we just |
| 739 | * have to skip deleting this guy. That's OK though because |
| 740 | * the node who's doing the actual deleting should handle it |
| 741 | * anyway. */ |
| 742 | if (current == osb->vote_task) { |
| 743 | mlog(0, "Skipping delete of %lu because we're currently " |
| 744 | "in process_vote\n", inode->i_ino); |
| 745 | goto bail; |
| 746 | } |
| 747 | |
| 748 | spin_lock(&oi->ip_lock); |
| 749 | /* OCFS2 *never* deletes system files. This should technically |
| 750 | * never get here as system file inodes should always have a |
| 751 | * positive link count. */ |
| 752 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 753 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
| 754 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 755 | goto bail_unlock; |
| 756 | } |
| 757 | |
| 758 | /* If we have voted "yes" on the wipe of this inode for |
| 759 | * another node, it will be marked here so we can safely skip |
| 760 | * it. Recovery will cleanup any inodes we might inadvertantly |
| 761 | * skip here. */ |
| 762 | if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) { |
| 763 | mlog(0, "Skipping delete of %lu because another node " |
| 764 | "has done this for us.\n", inode->i_ino); |
| 765 | goto bail_unlock; |
| 766 | } |
| 767 | |
| 768 | ret = 1; |
| 769 | bail_unlock: |
| 770 | spin_unlock(&oi->ip_lock); |
| 771 | bail: |
| 772 | return ret; |
| 773 | } |
| 774 | |
| 775 | /* Query the cluster to determine whether we should wipe an inode from |
| 776 | * disk or not. |
| 777 | * |
| 778 | * Requires the inode to have the cluster lock. */ |
| 779 | static int ocfs2_query_inode_wipe(struct inode *inode, |
| 780 | struct buffer_head *di_bh, |
| 781 | int *wipe) |
| 782 | { |
| 783 | int status = 0; |
| 784 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 785 | struct ocfs2_dinode *di; |
| 786 | |
| 787 | *wipe = 0; |
| 788 | |
| 789 | /* While we were waiting for the cluster lock in |
| 790 | * ocfs2_delete_inode, another node might have asked to delete |
| 791 | * the inode. Recheck our flags to catch this. */ |
| 792 | if (!ocfs2_inode_is_valid_to_delete(inode)) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 793 | mlog(0, "Skipping delete of %llu because flags changed\n", |
| 794 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 795 | goto bail; |
| 796 | } |
| 797 | |
| 798 | /* Now that we have an up to date inode, we can double check |
| 799 | * the link count. */ |
| 800 | if (inode->i_nlink) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 801 | mlog(0, "Skipping delete of %llu because nlink = %u\n", |
| 802 | (unsigned long long)oi->ip_blkno, inode->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 803 | goto bail; |
| 804 | } |
| 805 | |
| 806 | /* Do some basic inode verification... */ |
| 807 | di = (struct ocfs2_dinode *) di_bh->b_data; |
| 808 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL))) { |
| 809 | /* for lack of a better error? */ |
| 810 | status = -EEXIST; |
| 811 | mlog(ML_ERROR, |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 812 | "Inode %llu (on-disk %llu) not orphaned! " |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 813 | "Disk flags 0x%x, inode flags 0x%x\n", |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 814 | (unsigned long long)oi->ip_blkno, |
| 815 | (unsigned long long)di->i_blkno, di->i_flags, |
| 816 | oi->ip_flags); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 817 | goto bail; |
| 818 | } |
| 819 | |
| 820 | /* has someone already deleted us?! baaad... */ |
| 821 | if (di->i_dtime) { |
| 822 | status = -EEXIST; |
| 823 | mlog_errno(status); |
| 824 | goto bail; |
| 825 | } |
| 826 | |
Mark Fasheh | 6f16bf6 | 2007-03-20 17:17:54 -0700 | [diff] [blame] | 827 | /* |
| 828 | * This is how ocfs2 determines whether an inode is still live |
| 829 | * within the cluster. Every node takes a shared read lock on |
| 830 | * the inode open lock in ocfs2_read_locked_inode(). When we |
| 831 | * get to ->delete_inode(), each node tries to convert it's |
| 832 | * lock to an exclusive. Trylocks are serialized by the inode |
| 833 | * meta data lock. If the upconvert suceeds, we know the inode |
| 834 | * is no longer live and can be deleted. |
| 835 | * |
| 836 | * Though we call this with the meta data lock held, the |
| 837 | * trylock keeps us from ABBA deadlock. |
| 838 | */ |
| 839 | status = ocfs2_try_open_lock(inode, 1); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 840 | if (status == -EAGAIN) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 841 | status = 0; |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 842 | mlog(0, "Skipping delete of %llu because it is in use on" |
| 843 | "other nodes\n", (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 844 | goto bail; |
| 845 | } |
| 846 | if (status < 0) { |
| 847 | mlog_errno(status); |
| 848 | goto bail; |
| 849 | } |
| 850 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 851 | *wipe = 1; |
| 852 | mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n", |
| 853 | (unsigned long long)oi->ip_blkno, |
| 854 | le16_to_cpu(di->i_orphaned_slot)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 855 | |
| 856 | bail: |
| 857 | return status; |
| 858 | } |
| 859 | |
| 860 | /* Support function for ocfs2_delete_inode. Will help us keep the |
| 861 | * inode data in a consistent state for clear_inode. Always truncates |
| 862 | * pages, optionally sync's them first. */ |
| 863 | static void ocfs2_cleanup_delete_inode(struct inode *inode, |
| 864 | int sync_data) |
| 865 | { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 866 | mlog(0, "Cleanup inode %llu, sync = %d\n", |
| 867 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 868 | if (sync_data) |
| 869 | write_inode_now(inode, 1); |
| 870 | truncate_inode_pages(&inode->i_data, 0); |
| 871 | } |
| 872 | |
| 873 | void ocfs2_delete_inode(struct inode *inode) |
| 874 | { |
| 875 | int wipe, status; |
| 876 | sigset_t blocked, oldset; |
| 877 | struct buffer_head *di_bh = NULL; |
| 878 | |
| 879 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); |
| 880 | |
| 881 | if (is_bad_inode(inode)) { |
| 882 | mlog(0, "Skipping delete of bad inode\n"); |
| 883 | goto bail; |
| 884 | } |
| 885 | |
| 886 | if (!ocfs2_inode_is_valid_to_delete(inode)) { |
| 887 | /* It's probably not necessary to truncate_inode_pages |
| 888 | * here but we do it for safety anyway (it will most |
| 889 | * likely be a no-op anyway) */ |
| 890 | ocfs2_cleanup_delete_inode(inode, 0); |
| 891 | goto bail; |
| 892 | } |
| 893 | |
| 894 | /* We want to block signals in delete_inode as the lock and |
| 895 | * messaging paths may return us -ERESTARTSYS. Which would |
| 896 | * cause us to exit early, resulting in inodes being orphaned |
| 897 | * forever. */ |
| 898 | sigfillset(&blocked); |
| 899 | status = sigprocmask(SIG_BLOCK, &blocked, &oldset); |
| 900 | if (status < 0) { |
| 901 | mlog_errno(status); |
| 902 | ocfs2_cleanup_delete_inode(inode, 1); |
| 903 | goto bail; |
| 904 | } |
| 905 | |
| 906 | /* Lock down the inode. This gives us an up to date view of |
| 907 | * it's metadata (for verification), and allows us to |
| 908 | * serialize delete_inode votes. |
| 909 | * |
| 910 | * Even though we might be doing a truncate, we don't take the |
| 911 | * allocation lock here as it won't be needed - nobody will |
| 912 | * have the file open. |
| 913 | */ |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 914 | status = ocfs2_meta_lock(inode, &di_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 915 | if (status < 0) { |
| 916 | if (status != -ENOENT) |
| 917 | mlog_errno(status); |
| 918 | ocfs2_cleanup_delete_inode(inode, 0); |
| 919 | goto bail_unblock; |
| 920 | } |
| 921 | |
| 922 | /* Query the cluster. This will be the final decision made |
| 923 | * before we go ahead and wipe the inode. */ |
| 924 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); |
| 925 | if (!wipe || status < 0) { |
| 926 | /* Error and inode busy vote both mean we won't be |
| 927 | * removing the inode, so they take almost the same |
| 928 | * path. */ |
| 929 | if (status < 0) |
| 930 | mlog_errno(status); |
| 931 | |
| 932 | /* Someone in the cluster has voted to not wipe this |
| 933 | * inode, or it was never completely orphaned. Write |
| 934 | * out the pages and exit now. */ |
| 935 | ocfs2_cleanup_delete_inode(inode, 1); |
| 936 | goto bail_unlock_inode; |
| 937 | } |
| 938 | |
| 939 | ocfs2_cleanup_delete_inode(inode, 0); |
| 940 | |
| 941 | status = ocfs2_wipe_inode(inode, di_bh); |
| 942 | if (status < 0) { |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 943 | if (status != -EDEADLK) |
| 944 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 945 | goto bail_unlock_inode; |
| 946 | } |
| 947 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 948 | /* |
| 949 | * Mark the inode as successfully deleted. |
| 950 | * |
| 951 | * This is important for ocfs2_clear_inode() as it will check |
| 952 | * this flag and skip any checkpointing work |
| 953 | * |
| 954 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate |
| 955 | * the LVB for other nodes. |
| 956 | */ |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 957 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
| 958 | |
| 959 | bail_unlock_inode: |
| 960 | ocfs2_meta_unlock(inode, 1); |
| 961 | brelse(di_bh); |
| 962 | bail_unblock: |
| 963 | status = sigprocmask(SIG_SETMASK, &oldset, NULL); |
| 964 | if (status < 0) |
| 965 | mlog_errno(status); |
| 966 | bail: |
| 967 | clear_inode(inode); |
| 968 | mlog_exit_void(); |
| 969 | } |
| 970 | |
| 971 | void ocfs2_clear_inode(struct inode *inode) |
| 972 | { |
| 973 | int status; |
| 974 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 975 | |
| 976 | mlog_entry_void(); |
| 977 | |
| 978 | if (!inode) |
| 979 | goto bail; |
| 980 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 981 | mlog(0, "Clearing inode: %llu, nlink = %u\n", |
| 982 | (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 983 | |
| 984 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, |
| 985 | "Inode=%lu\n", inode->i_ino); |
| 986 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 987 | /* For remove delete_inode vote, we hold open lock before, |
| 988 | * now it is time to unlock PR and EX open locks. */ |
| 989 | ocfs2_open_unlock(inode); |
| 990 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 991 | /* Do these before all the other work so that we don't bounce |
| 992 | * the vote thread while waiting to destroy the locks. */ |
| 993 | ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); |
| 994 | ocfs2_mark_lockres_freeing(&oi->ip_meta_lockres); |
| 995 | ocfs2_mark_lockres_freeing(&oi->ip_data_lockres); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 996 | ocfs2_mark_lockres_freeing(&oi->ip_open_lockres); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 997 | |
| 998 | /* We very well may get a clear_inode before all an inodes |
| 999 | * metadata has hit disk. Of course, we can't drop any cluster |
| 1000 | * locks until the journal has finished with it. The only |
| 1001 | * exception here are successfully wiped inodes - their |
| 1002 | * metadata can now be considered to be part of the system |
| 1003 | * inodes from which it came. */ |
| 1004 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) |
| 1005 | ocfs2_checkpoint_inode(inode); |
| 1006 | |
| 1007 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1008 | "Clear inode of %llu, inode has io markers\n", |
| 1009 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1010 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1011 | status = ocfs2_drop_inode_locks(inode); |
| 1012 | if (status < 0) |
| 1013 | mlog_errno(status); |
| 1014 | |
| 1015 | ocfs2_lock_res_free(&oi->ip_rw_lockres); |
| 1016 | ocfs2_lock_res_free(&oi->ip_meta_lockres); |
| 1017 | ocfs2_lock_res_free(&oi->ip_data_lockres); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 1018 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1019 | |
| 1020 | ocfs2_metadata_cache_purge(inode); |
| 1021 | |
| 1022 | mlog_bug_on_msg(oi->ip_metadata_cache.ci_num_cached, |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1023 | "Clear inode of %llu, inode has %u cache items\n", |
| 1024 | (unsigned long long)oi->ip_blkno, oi->ip_metadata_cache.ci_num_cached); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1025 | |
| 1026 | mlog_bug_on_msg(!(oi->ip_flags & OCFS2_INODE_CACHE_INLINE), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1027 | "Clear inode of %llu, inode has a bad flag\n", |
| 1028 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1029 | |
| 1030 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1031 | "Clear inode of %llu, inode is locked\n", |
| 1032 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1033 | |
Mark Fasheh | 251b6ec | 2006-01-10 15:41:43 -0800 | [diff] [blame] | 1034 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1035 | "Clear inode of %llu, io_mutex is locked\n", |
| 1036 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | 251b6ec | 2006-01-10 15:41:43 -0800 | [diff] [blame] | 1037 | mutex_unlock(&oi->ip_io_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1038 | |
| 1039 | /* |
| 1040 | * down_trylock() returns 0, down_write_trylock() returns 1 |
| 1041 | * kernel 1, world 0 |
| 1042 | */ |
| 1043 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1044 | "Clear inode of %llu, alloc_sem is locked\n", |
| 1045 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1046 | up_write(&oi->ip_alloc_sem); |
| 1047 | |
| 1048 | mlog_bug_on_msg(oi->ip_open_count, |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1049 | "Clear inode of %llu has open count %d\n", |
| 1050 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1051 | |
| 1052 | /* Clear all other flags. */ |
| 1053 | oi->ip_flags = OCFS2_INODE_CACHE_INLINE; |
| 1054 | oi->ip_created_trans = 0; |
| 1055 | oi->ip_last_trans = 0; |
| 1056 | oi->ip_dir_start_lookup = 0; |
| 1057 | oi->ip_blkno = 0ULL; |
| 1058 | |
| 1059 | bail: |
| 1060 | mlog_exit_void(); |
| 1061 | } |
| 1062 | |
| 1063 | /* Called under inode_lock, with no more references on the |
| 1064 | * struct inode, so it's safe here to check the flags field |
| 1065 | * and to manipulate i_nlink without any other locks. */ |
| 1066 | void ocfs2_drop_inode(struct inode *inode) |
| 1067 | { |
| 1068 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 1069 | |
| 1070 | mlog_entry_void(); |
| 1071 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1072 | mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n", |
| 1073 | (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1074 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1075 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
| 1076 | generic_delete_inode(inode); |
| 1077 | else |
| 1078 | generic_drop_inode(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1079 | |
| 1080 | mlog_exit_void(); |
| 1081 | } |
| 1082 | |
| 1083 | /* |
| 1084 | * TODO: this should probably be merged into ocfs2_get_block |
| 1085 | * |
| 1086 | * However, you now need to pay attention to the cont_prepare_write() |
| 1087 | * stuff in ocfs2_get_block (that is, ocfs2_get_block pretty much |
| 1088 | * expects never to extend). |
| 1089 | */ |
| 1090 | struct buffer_head *ocfs2_bread(struct inode *inode, |
| 1091 | int block, int *err, int reada) |
| 1092 | { |
| 1093 | struct buffer_head *bh = NULL; |
| 1094 | int tmperr; |
| 1095 | u64 p_blkno; |
| 1096 | int readflags = OCFS2_BH_CACHED; |
| 1097 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1098 | if (reada) |
| 1099 | readflags |= OCFS2_BH_READAHEAD; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1100 | |
| 1101 | if (((u64)block << inode->i_sb->s_blocksize_bits) >= |
| 1102 | i_size_read(inode)) { |
| 1103 | BUG_ON(!reada); |
| 1104 | return NULL; |
| 1105 | } |
| 1106 | |
Mark Fasheh | 49cb8d2 | 2007-03-09 16:21:46 -0800 | [diff] [blame] | 1107 | tmperr = ocfs2_extent_map_get_blocks(inode, block, &p_blkno, NULL, |
| 1108 | NULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1109 | if (tmperr < 0) { |
| 1110 | mlog_errno(tmperr); |
| 1111 | goto fail; |
| 1112 | } |
| 1113 | |
| 1114 | tmperr = ocfs2_read_block(OCFS2_SB(inode->i_sb), p_blkno, &bh, |
| 1115 | readflags, inode); |
| 1116 | if (tmperr < 0) |
| 1117 | goto fail; |
| 1118 | |
| 1119 | tmperr = 0; |
| 1120 | |
| 1121 | *err = 0; |
| 1122 | return bh; |
| 1123 | |
| 1124 | fail: |
| 1125 | if (bh) { |
| 1126 | brelse(bh); |
| 1127 | bh = NULL; |
| 1128 | } |
| 1129 | *err = -EIO; |
| 1130 | return NULL; |
| 1131 | } |
| 1132 | |
| 1133 | /* |
| 1134 | * This is called from our getattr. |
| 1135 | */ |
| 1136 | int ocfs2_inode_revalidate(struct dentry *dentry) |
| 1137 | { |
| 1138 | struct inode *inode = dentry->d_inode; |
| 1139 | int status = 0; |
| 1140 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1141 | mlog_entry("(inode = 0x%p, ino = %llu)\n", inode, |
| 1142 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1143 | |
| 1144 | if (!inode) { |
| 1145 | mlog(0, "eep, no inode!\n"); |
| 1146 | status = -ENOENT; |
| 1147 | goto bail; |
| 1148 | } |
| 1149 | |
| 1150 | spin_lock(&OCFS2_I(inode)->ip_lock); |
| 1151 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { |
| 1152 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1153 | mlog(0, "inode deleted!\n"); |
| 1154 | status = -ENOENT; |
| 1155 | goto bail; |
| 1156 | } |
| 1157 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1158 | |
| 1159 | /* Let ocfs2_meta_lock do the work of updating our struct |
| 1160 | * inode for us. */ |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 1161 | status = ocfs2_meta_lock(inode, NULL, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1162 | if (status < 0) { |
| 1163 | if (status != -ENOENT) |
| 1164 | mlog_errno(status); |
| 1165 | goto bail; |
| 1166 | } |
| 1167 | ocfs2_meta_unlock(inode, 0); |
| 1168 | bail: |
| 1169 | mlog_exit(status); |
| 1170 | |
| 1171 | return status; |
| 1172 | } |
| 1173 | |
| 1174 | /* |
| 1175 | * Updates a disk inode from a |
| 1176 | * struct inode. |
| 1177 | * Only takes ip_lock. |
| 1178 | */ |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1179 | int ocfs2_mark_inode_dirty(handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1180 | struct inode *inode, |
| 1181 | struct buffer_head *bh) |
| 1182 | { |
| 1183 | int status; |
| 1184 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; |
| 1185 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1186 | mlog_entry("(inode %llu)\n", |
| 1187 | (unsigned long long)OCFS2_I(inode)->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1188 | |
| 1189 | status = ocfs2_journal_access(handle, inode, bh, |
| 1190 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1191 | if (status < 0) { |
| 1192 | mlog_errno(status); |
| 1193 | goto leave; |
| 1194 | } |
| 1195 | |
| 1196 | spin_lock(&OCFS2_I(inode)->ip_lock); |
| 1197 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 1198 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1199 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1200 | |
| 1201 | fe->i_size = cpu_to_le64(i_size_read(inode)); |
| 1202 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
| 1203 | fe->i_uid = cpu_to_le32(inode->i_uid); |
| 1204 | fe->i_gid = cpu_to_le32(inode->i_gid); |
| 1205 | fe->i_mode = cpu_to_le16(inode->i_mode); |
| 1206 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); |
| 1207 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); |
| 1208 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
| 1209 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); |
| 1210 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); |
| 1211 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); |
| 1212 | |
| 1213 | status = ocfs2_journal_dirty(handle, bh); |
| 1214 | if (status < 0) |
| 1215 | mlog_errno(status); |
| 1216 | |
| 1217 | status = 0; |
| 1218 | leave: |
| 1219 | |
| 1220 | mlog_exit(status); |
| 1221 | return status; |
| 1222 | } |
| 1223 | |
| 1224 | /* |
| 1225 | * |
| 1226 | * Updates a struct inode from a disk inode. |
| 1227 | * does no i/o, only takes ip_lock. |
| 1228 | */ |
| 1229 | void ocfs2_refresh_inode(struct inode *inode, |
| 1230 | struct ocfs2_dinode *fe) |
| 1231 | { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1232 | spin_lock(&OCFS2_I(inode)->ip_lock); |
| 1233 | |
| 1234 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 1235 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
| 1236 | ocfs2_set_inode_flags(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1237 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 1238 | inode->i_nlink = le16_to_cpu(fe->i_links_count); |
| 1239 | inode->i_uid = le32_to_cpu(fe->i_uid); |
| 1240 | inode->i_gid = le32_to_cpu(fe->i_gid); |
| 1241 | inode->i_mode = le16_to_cpu(fe->i_mode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1242 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
| 1243 | inode->i_blocks = 0; |
| 1244 | else |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame^] | 1245 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1246 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
| 1247 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); |
| 1248 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); |
| 1249 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); |
| 1250 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); |
| 1251 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); |
| 1252 | |
| 1253 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1254 | } |