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> |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 31 | |
| 32 | #include <asm/byteorder.h> |
| 33 | |
| 34 | #define MLOG_MASK_PREFIX ML_INODE |
| 35 | #include <cluster/masklog.h> |
| 36 | |
| 37 | #include "ocfs2.h" |
| 38 | |
| 39 | #include "alloc.h" |
| 40 | #include "dlmglue.h" |
| 41 | #include "extent_map.h" |
| 42 | #include "file.h" |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 43 | #include "heartbeat.h" |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 44 | #include "inode.h" |
| 45 | #include "journal.h" |
| 46 | #include "namei.h" |
| 47 | #include "suballoc.h" |
| 48 | #include "super.h" |
| 49 | #include "symlink.h" |
| 50 | #include "sysfile.h" |
| 51 | #include "uptodate.h" |
Tiger Yang | cf1d6c7 | 2008-08-18 17:11:00 +0800 | [diff] [blame] | 52 | #include "xattr.h" |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 53 | |
| 54 | #include "buffer_head_io.h" |
| 55 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 56 | struct ocfs2_find_inode_args |
| 57 | { |
| 58 | u64 fi_blkno; |
| 59 | unsigned long fi_ino; |
| 60 | unsigned int fi_flags; |
Jan Kara | 5fa0613 | 2008-01-11 00:11:45 +0100 | [diff] [blame] | 61 | unsigned int fi_sysfile_type; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 62 | }; |
| 63 | |
Jan Kara | 5fa0613 | 2008-01-11 00:11:45 +0100 | [diff] [blame] | 64 | static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES]; |
| 65 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 66 | static int ocfs2_read_locked_inode(struct inode *inode, |
| 67 | struct ocfs2_find_inode_args *args); |
| 68 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque); |
| 69 | static int ocfs2_find_actor(struct inode *inode, void *opaque); |
| 70 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, |
| 71 | struct inode *inode, |
| 72 | struct buffer_head *fe_bh); |
| 73 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 74 | void ocfs2_set_inode_flags(struct inode *inode) |
| 75 | { |
| 76 | unsigned int flags = OCFS2_I(inode)->ip_attr; |
| 77 | |
| 78 | inode->i_flags &= ~(S_IMMUTABLE | |
| 79 | S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC); |
| 80 | |
| 81 | if (flags & OCFS2_IMMUTABLE_FL) |
| 82 | inode->i_flags |= S_IMMUTABLE; |
| 83 | |
| 84 | if (flags & OCFS2_SYNC_FL) |
| 85 | inode->i_flags |= S_SYNC; |
| 86 | if (flags & OCFS2_APPEND_FL) |
| 87 | inode->i_flags |= S_APPEND; |
| 88 | if (flags & OCFS2_NOATIME_FL) |
| 89 | inode->i_flags |= S_NOATIME; |
| 90 | if (flags & OCFS2_DIRSYNC_FL) |
| 91 | inode->i_flags |= S_DIRSYNC; |
| 92 | } |
| 93 | |
Jan Kara | 6e4b0d5 | 2007-04-27 11:08:01 -0700 | [diff] [blame] | 94 | /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */ |
| 95 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi) |
| 96 | { |
| 97 | unsigned int flags = oi->vfs_inode.i_flags; |
| 98 | |
| 99 | oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL| |
| 100 | OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL); |
| 101 | if (flags & S_SYNC) |
| 102 | oi->ip_attr |= OCFS2_SYNC_FL; |
| 103 | if (flags & S_APPEND) |
| 104 | oi->ip_attr |= OCFS2_APPEND_FL; |
| 105 | if (flags & S_IMMUTABLE) |
| 106 | oi->ip_attr |= OCFS2_IMMUTABLE_FL; |
| 107 | if (flags & S_NOATIME) |
| 108 | oi->ip_attr |= OCFS2_NOATIME_FL; |
| 109 | if (flags & S_DIRSYNC) |
| 110 | oi->ip_attr |= OCFS2_DIRSYNC_FL; |
| 111 | } |
| 112 | |
Jan Kara | 5fa0613 | 2008-01-11 00:11:45 +0100 | [diff] [blame] | 113 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, |
| 114 | int sysfile_type) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 115 | { |
| 116 | struct inode *inode = NULL; |
| 117 | struct super_block *sb = osb->sb; |
| 118 | struct ocfs2_find_inode_args args; |
| 119 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 120 | mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 121 | |
| 122 | /* Ok. By now we've either got the offsets passed to us by the |
| 123 | * caller, or we just pulled them off the bh. Lets do some |
| 124 | * sanity checks to make sure they're OK. */ |
| 125 | if (blkno == 0) { |
| 126 | inode = ERR_PTR(-EINVAL); |
| 127 | mlog_errno(PTR_ERR(inode)); |
| 128 | goto bail; |
| 129 | } |
| 130 | |
| 131 | args.fi_blkno = blkno; |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 132 | args.fi_flags = flags; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 133 | args.fi_ino = ino_from_blkno(sb, blkno); |
Jan Kara | 5fa0613 | 2008-01-11 00:11:45 +0100 | [diff] [blame] | 134 | args.fi_sysfile_type = sysfile_type; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 135 | |
| 136 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, |
| 137 | ocfs2_init_locked_inode, &args); |
| 138 | /* inode was *not* in the inode cache. 2.6.x requires |
| 139 | * us to do our own read_inode call and unlock it |
| 140 | * afterwards. */ |
| 141 | if (inode && inode->i_state & I_NEW) { |
| 142 | mlog(0, "Inode was not in inode cache, reading it.\n"); |
| 143 | ocfs2_read_locked_inode(inode, &args); |
| 144 | unlock_new_inode(inode); |
| 145 | } |
| 146 | if (inode == NULL) { |
| 147 | inode = ERR_PTR(-ENOMEM); |
| 148 | mlog_errno(PTR_ERR(inode)); |
| 149 | goto bail; |
| 150 | } |
| 151 | if (is_bad_inode(inode)) { |
| 152 | iput(inode); |
| 153 | inode = ERR_PTR(-ESTALE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 154 | goto bail; |
| 155 | } |
| 156 | |
| 157 | bail: |
| 158 | if (!IS_ERR(inode)) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 159 | mlog(0, "returning inode with number %llu\n", |
| 160 | (unsigned long long)OCFS2_I(inode)->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 161 | mlog_exit_ptr(inode); |
Mark Fasheh | 6a1bd4a | 2007-01-03 17:06:59 -0800 | [diff] [blame] | 162 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 163 | |
| 164 | return inode; |
| 165 | } |
| 166 | |
| 167 | |
| 168 | /* |
| 169 | * here's how inodes get read from disk: |
| 170 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR |
| 171 | * found? : return the in-memory inode |
| 172 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE |
| 173 | */ |
| 174 | |
| 175 | static int ocfs2_find_actor(struct inode *inode, void *opaque) |
| 176 | { |
| 177 | struct ocfs2_find_inode_args *args = NULL; |
| 178 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 179 | int ret = 0; |
| 180 | |
| 181 | mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque); |
| 182 | |
| 183 | args = opaque; |
| 184 | |
| 185 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); |
| 186 | |
| 187 | if (oi->ip_blkno != args->fi_blkno) |
| 188 | goto bail; |
| 189 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 190 | ret = 1; |
| 191 | bail: |
| 192 | mlog_exit(ret); |
| 193 | return ret; |
| 194 | } |
| 195 | |
| 196 | /* |
| 197 | * initialize the new inode, but don't do anything that would cause |
| 198 | * us to sleep. |
| 199 | * return 0 on success, 1 on failure |
| 200 | */ |
| 201 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) |
| 202 | { |
| 203 | struct ocfs2_find_inode_args *args = opaque; |
| 204 | |
| 205 | mlog_entry("inode = %p, opaque = %p\n", inode, opaque); |
| 206 | |
| 207 | inode->i_ino = args->fi_ino; |
| 208 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; |
Jan Kara | 5fa0613 | 2008-01-11 00:11:45 +0100 | [diff] [blame] | 209 | if (args->fi_sysfile_type != 0) |
| 210 | lockdep_set_class(&inode->i_mutex, |
| 211 | &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 212 | |
| 213 | mlog_exit(0); |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
| 218 | int create_ino) |
| 219 | { |
| 220 | struct super_block *sb; |
| 221 | struct ocfs2_super *osb; |
| 222 | int status = -EINVAL; |
Mark Fasheh | 53da493 | 2008-07-21 14:29:16 -0700 | [diff] [blame] | 223 | int use_plocks = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 224 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 225 | mlog_entry("(0x%p, size:%llu)\n", inode, |
Mark Fasheh | 1ca1a11 | 2007-04-27 16:01:25 -0700 | [diff] [blame] | 226 | (unsigned long long)le64_to_cpu(fe->i_size)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 227 | |
| 228 | sb = inode->i_sb; |
| 229 | osb = OCFS2_SB(sb); |
| 230 | |
Mark Fasheh | 53da493 | 2008-07-21 14:29:16 -0700 | [diff] [blame] | 231 | if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) || |
| 232 | ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks()) |
| 233 | use_plocks = 0; |
| 234 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 235 | /* this means that read_inode cannot create a superblock inode |
| 236 | * today. change if needed. */ |
| 237 | if (!OCFS2_IS_VALID_DINODE(fe) || |
| 238 | !(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { |
Mark Fasheh | 6a1bd4a | 2007-01-03 17:06:59 -0800 | [diff] [blame] | 239 | mlog(0, "Invalid dinode: i_ino=%lu, i_blkno=%llu, " |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 240 | "signature = %.*s, flags = 0x%x\n", |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 241 | inode->i_ino, |
| 242 | (unsigned long long)le64_to_cpu(fe->i_blkno), 7, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 243 | fe->i_signature, le32_to_cpu(fe->i_flags)); |
| 244 | goto bail; |
| 245 | } |
| 246 | |
| 247 | if (le32_to_cpu(fe->i_fs_generation) != osb->fs_generation) { |
| 248 | mlog(ML_ERROR, "file entry generation does not match " |
| 249 | "superblock! osb->fs_generation=%x, " |
| 250 | "fe->i_fs_generation=%x\n", |
| 251 | osb->fs_generation, le32_to_cpu(fe->i_fs_generation)); |
| 252 | goto bail; |
| 253 | } |
| 254 | |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame] | 255 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
| 256 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
Mark Fasheh | 15b1e36 | 2007-09-07 13:58:15 -0700 | [diff] [blame] | 257 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame] | 258 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 259 | inode->i_version = 1; |
| 260 | inode->i_generation = le32_to_cpu(fe->i_generation); |
| 261 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
| 262 | inode->i_mode = le16_to_cpu(fe->i_mode); |
| 263 | inode->i_uid = le32_to_cpu(fe->i_uid); |
| 264 | inode->i_gid = le32_to_cpu(fe->i_gid); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 265 | |
| 266 | /* Fast symlinks will have i_size but no allocated clusters. */ |
| 267 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) |
| 268 | inode->i_blocks = 0; |
| 269 | else |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame] | 270 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 271 | inode->i_mapping->a_ops = &ocfs2_aops; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 272 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
| 273 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); |
| 274 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); |
| 275 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); |
| 276 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); |
| 277 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); |
| 278 | |
| 279 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) |
| 280 | mlog(ML_ERROR, |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 281 | "ip_blkno %llu != i_blkno %llu!\n", |
| 282 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
Mark Fasheh | 1ca1a11 | 2007-04-27 16:01:25 -0700 | [diff] [blame] | 283 | (unsigned long long)le64_to_cpu(fe->i_blkno)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 284 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 285 | inode->i_nlink = le16_to_cpu(fe->i_links_count); |
| 286 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 287 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) |
| 288 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; |
| 289 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 290 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
| 291 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; |
| 292 | mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino); |
| 293 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { |
| 294 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; |
| 295 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { |
| 296 | mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino); |
| 297 | /* we can't actually hit this as read_inode can't |
| 298 | * handle superblocks today ;-) */ |
| 299 | BUG(); |
| 300 | } |
| 301 | |
| 302 | switch (inode->i_mode & S_IFMT) { |
| 303 | case S_IFREG: |
Mark Fasheh | 53da493 | 2008-07-21 14:29:16 -0700 | [diff] [blame] | 304 | if (use_plocks) |
| 305 | inode->i_fop = &ocfs2_fops; |
| 306 | else |
| 307 | inode->i_fop = &ocfs2_fops_no_plocks; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 308 | inode->i_op = &ocfs2_file_iops; |
| 309 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 310 | break; |
| 311 | case S_IFDIR: |
| 312 | inode->i_op = &ocfs2_dir_iops; |
Mark Fasheh | 53da493 | 2008-07-21 14:29:16 -0700 | [diff] [blame] | 313 | if (use_plocks) |
| 314 | inode->i_fop = &ocfs2_dops; |
| 315 | else |
| 316 | inode->i_fop = &ocfs2_dops_no_plocks; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 317 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 318 | break; |
| 319 | case S_IFLNK: |
| 320 | if (ocfs2_inode_is_fast_symlink(inode)) |
| 321 | inode->i_op = &ocfs2_fast_symlink_inode_operations; |
| 322 | else |
| 323 | inode->i_op = &ocfs2_symlink_inode_operations; |
| 324 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 325 | break; |
| 326 | default: |
| 327 | inode->i_op = &ocfs2_special_file_iops; |
| 328 | init_special_inode(inode, inode->i_mode, |
| 329 | inode->i_rdev); |
| 330 | break; |
| 331 | } |
| 332 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 333 | if (create_ino) { |
| 334 | inode->i_ino = ino_from_blkno(inode->i_sb, |
| 335 | le64_to_cpu(fe->i_blkno)); |
| 336 | |
| 337 | /* |
| 338 | * If we ever want to create system files from kernel, |
| 339 | * the generation argument to |
| 340 | * ocfs2_inode_lock_res_init() will have to change. |
| 341 | */ |
Mark Fasheh | 1ca1a11 | 2007-04-27 16:01:25 -0700 | [diff] [blame] | 342 | BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 343 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 344 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 345 | OCFS2_LOCK_TYPE_META, 0, inode); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 346 | |
| 347 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
| 348 | OCFS2_LOCK_TYPE_OPEN, 0, inode); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 349 | } |
| 350 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 351 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 352 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
| 353 | inode); |
| 354 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 355 | ocfs2_set_inode_flags(inode); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 356 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 357 | status = 0; |
| 358 | bail: |
| 359 | mlog_exit(status); |
| 360 | return status; |
| 361 | } |
| 362 | |
| 363 | static int ocfs2_read_locked_inode(struct inode *inode, |
| 364 | struct ocfs2_find_inode_args *args) |
| 365 | { |
| 366 | struct super_block *sb; |
| 367 | struct ocfs2_super *osb; |
| 368 | struct ocfs2_dinode *fe; |
| 369 | struct buffer_head *bh = NULL; |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 370 | int status, can_lock; |
| 371 | u32 generation = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 372 | |
| 373 | mlog_entry("(0x%p, 0x%p)\n", inode, args); |
| 374 | |
| 375 | status = -EINVAL; |
| 376 | if (inode == NULL || inode->i_sb == NULL) { |
| 377 | mlog(ML_ERROR, "bad inode\n"); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 378 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 379 | } |
| 380 | sb = inode->i_sb; |
| 381 | osb = OCFS2_SB(sb); |
| 382 | |
| 383 | if (!args) { |
| 384 | mlog(ML_ERROR, "bad inode args\n"); |
| 385 | make_bad_inode(inode); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 386 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 387 | } |
| 388 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 389 | /* |
| 390 | * To improve performance of cold-cache inode stats, we take |
| 391 | * the cluster lock here if possible. |
| 392 | * |
| 393 | * Generally, OCFS2 never trusts the contents of an inode |
| 394 | * unless it's holding a cluster lock, so taking it here isn't |
| 395 | * a correctness issue as much as it is a performance |
| 396 | * improvement. |
| 397 | * |
| 398 | * There are three times when taking the lock is not a good idea: |
| 399 | * |
| 400 | * 1) During startup, before we have initialized the DLM. |
| 401 | * |
| 402 | * 2) If we are reading certain system files which never get |
| 403 | * cluster locks (local alloc, truncate log). |
| 404 | * |
| 405 | * 3) If the process doing the iget() is responsible for |
| 406 | * orphan dir recovery. We're holding the orphan dir lock and |
| 407 | * can get into a deadlock with another process on another |
| 408 | * node in ->delete_inode(). |
| 409 | * |
| 410 | * #1 and #2 can be simply solved by never taking the lock |
| 411 | * here for system files (which are the only type we read |
| 412 | * during mount). It's a heavier approach, but our main |
| 413 | * concern is user-accesible files anyway. |
| 414 | * |
| 415 | * #3 works itself out because we'll eventually take the |
| 416 | * cluster lock before trusting anything anyway. |
| 417 | */ |
| 418 | can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE) |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 419 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
Sunil Mushran | c271c5c | 2006-12-05 17:56:35 -0800 | [diff] [blame] | 420 | && !ocfs2_mount_local(osb); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 421 | |
| 422 | /* |
| 423 | * To maintain backwards compatibility with older versions of |
| 424 | * ocfs2-tools, we still store the generation value for system |
| 425 | * files. The only ones that actually matter to userspace are |
| 426 | * the journals, but it's easier and inexpensive to just flag |
| 427 | * all system files similarly. |
| 428 | */ |
| 429 | if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE) |
| 430 | generation = osb->fs_generation; |
| 431 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 432 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 433 | OCFS2_LOCK_TYPE_META, |
| 434 | generation, inode); |
| 435 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 436 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
| 437 | OCFS2_LOCK_TYPE_OPEN, |
| 438 | 0, inode); |
| 439 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 440 | if (can_lock) { |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 441 | status = ocfs2_open_lock(inode); |
| 442 | if (status) { |
| 443 | make_bad_inode(inode); |
| 444 | mlog_errno(status); |
| 445 | return status; |
| 446 | } |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 447 | status = ocfs2_inode_lock(inode, NULL, 0); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 448 | if (status) { |
| 449 | make_bad_inode(inode); |
| 450 | mlog_errno(status); |
| 451 | return status; |
| 452 | } |
| 453 | } |
| 454 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 455 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
| 456 | status = ocfs2_try_open_lock(inode, 0); |
| 457 | if (status) { |
| 458 | make_bad_inode(inode); |
| 459 | return status; |
| 460 | } |
| 461 | } |
| 462 | |
Joel Becker | da1e909 | 2008-10-09 17:20:29 -0700 | [diff] [blame] | 463 | if (can_lock) |
Joel Becker | d4a8c93 | 2008-10-09 17:20:34 -0700 | [diff] [blame] | 464 | status = ocfs2_read_blocks(inode, args->fi_blkno, 1, &bh, |
| 465 | OCFS2_BH_IGNORE_CACHE); |
Joel Becker | da1e909 | 2008-10-09 17:20:29 -0700 | [diff] [blame] | 466 | else |
| 467 | status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 468 | if (status < 0) { |
| 469 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 470 | goto bail; |
| 471 | } |
| 472 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 473 | status = -EINVAL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 474 | fe = (struct ocfs2_dinode *) bh->b_data; |
| 475 | if (!OCFS2_IS_VALID_DINODE(fe)) { |
Mark Fasheh | a46043e | 2007-11-19 18:40:16 -0800 | [diff] [blame] | 476 | mlog(0, "Invalid dinode #%llu: signature = %.*s\n", |
| 477 | (unsigned long long)args->fi_blkno, 7, |
Mark Fasheh | 1ca1a11 | 2007-04-27 16:01:25 -0700 | [diff] [blame] | 478 | fe->i_signature); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 479 | goto bail; |
| 480 | } |
| 481 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 482 | /* |
| 483 | * This is a code bug. Right now the caller needs to |
| 484 | * understand whether it is asking for a system file inode or |
| 485 | * not so the proper lock names can be built. |
| 486 | */ |
| 487 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != |
| 488 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), |
| 489 | "Inode %llu: system file state is ambigous\n", |
| 490 | (unsigned long long)args->fi_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 491 | |
| 492 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || |
| 493 | S_ISBLK(le16_to_cpu(fe->i_mode))) |
| 494 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
| 495 | |
Mark Fasheh | 6a1bd4a | 2007-01-03 17:06:59 -0800 | [diff] [blame] | 496 | if (ocfs2_populate_inode(inode, fe, 0) < 0) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 497 | goto bail; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 498 | |
| 499 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); |
| 500 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 501 | status = 0; |
| 502 | |
| 503 | bail: |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 504 | if (can_lock) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 505 | ocfs2_inode_unlock(inode, 0); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 506 | |
| 507 | if (status < 0) |
| 508 | make_bad_inode(inode); |
| 509 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 510 | if (args && bh) |
| 511 | brelse(bh); |
| 512 | |
| 513 | mlog_exit(status); |
| 514 | return status; |
| 515 | } |
| 516 | |
| 517 | void ocfs2_sync_blockdev(struct super_block *sb) |
| 518 | { |
| 519 | sync_blockdev(sb->s_bdev); |
| 520 | } |
| 521 | |
| 522 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, |
| 523 | struct inode *inode, |
| 524 | struct buffer_head *fe_bh) |
| 525 | { |
| 526 | int status = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 527 | struct ocfs2_truncate_context *tc = NULL; |
| 528 | struct ocfs2_dinode *fe; |
Mark Fasheh | 60b1139 | 2007-02-16 11:46:50 -0800 | [diff] [blame] | 529 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 530 | |
| 531 | mlog_entry_void(); |
| 532 | |
| 533 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
| 534 | |
Mark Fasheh | 1afc32b | 2007-09-07 14:46:51 -0700 | [diff] [blame] | 535 | /* |
| 536 | * This check will also skip truncate of inodes with inline |
| 537 | * data and fast symlinks. |
| 538 | */ |
Mark Fasheh | 3a0782d | 2007-01-17 12:53:31 -0800 | [diff] [blame] | 539 | if (fe->i_clusters) { |
Joel Becker | 2b4e30f | 2008-09-03 20:03:41 -0700 | [diff] [blame] | 540 | if (ocfs2_should_order_data(inode)) |
| 541 | ocfs2_begin_ordered_truncate(inode, 0); |
| 542 | |
Mark Fasheh | 60b1139 | 2007-02-16 11:46:50 -0800 | [diff] [blame] | 543 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
| 544 | if (IS_ERR(handle)) { |
| 545 | status = PTR_ERR(handle); |
| 546 | mlog_errno(status); |
| 547 | goto out; |
| 548 | } |
| 549 | |
| 550 | status = ocfs2_journal_access(handle, inode, fe_bh, |
| 551 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 552 | if (status < 0) { |
| 553 | mlog_errno(status); |
| 554 | goto out; |
| 555 | } |
| 556 | |
| 557 | i_size_write(inode, 0); |
| 558 | |
| 559 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); |
| 560 | if (status < 0) { |
| 561 | mlog_errno(status); |
| 562 | goto out; |
| 563 | } |
| 564 | |
| 565 | ocfs2_commit_trans(osb, handle); |
| 566 | handle = NULL; |
| 567 | |
Mark Fasheh | 3a0782d | 2007-01-17 12:53:31 -0800 | [diff] [blame] | 568 | status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc); |
| 569 | if (status < 0) { |
| 570 | mlog_errno(status); |
| 571 | goto out; |
| 572 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 573 | |
Mark Fasheh | 3a0782d | 2007-01-17 12:53:31 -0800 | [diff] [blame] | 574 | status = ocfs2_commit_truncate(osb, inode, fe_bh, tc); |
| 575 | if (status < 0) { |
| 576 | mlog_errno(status); |
| 577 | goto out; |
| 578 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 579 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 580 | |
Mark Fasheh | 60b1139 | 2007-02-16 11:46:50 -0800 | [diff] [blame] | 581 | out: |
| 582 | if (handle) |
| 583 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 584 | mlog_exit(status); |
| 585 | return status; |
| 586 | } |
| 587 | |
| 588 | static int ocfs2_remove_inode(struct inode *inode, |
| 589 | struct buffer_head *di_bh, |
| 590 | struct inode *orphan_dir_inode, |
| 591 | struct buffer_head *orphan_dir_bh) |
| 592 | { |
| 593 | int status; |
| 594 | struct inode *inode_alloc_inode = NULL; |
| 595 | struct buffer_head *inode_alloc_bh = NULL; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 596 | handle_t *handle; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 597 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 598 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; |
| 599 | |
| 600 | inode_alloc_inode = |
| 601 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, |
| 602 | le16_to_cpu(di->i_suballoc_slot)); |
| 603 | if (!inode_alloc_inode) { |
| 604 | status = -EEXIST; |
| 605 | mlog_errno(status); |
| 606 | goto bail; |
| 607 | } |
| 608 | |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 609 | mutex_lock(&inode_alloc_inode->i_mutex); |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 610 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 611 | if (status < 0) { |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 612 | mutex_unlock(&inode_alloc_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 613 | |
| 614 | mlog_errno(status); |
| 615 | goto bail; |
| 616 | } |
| 617 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 618 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 619 | if (IS_ERR(handle)) { |
| 620 | status = PTR_ERR(handle); |
| 621 | mlog_errno(status); |
| 622 | goto bail_unlock; |
| 623 | } |
| 624 | |
| 625 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, |
| 626 | orphan_dir_bh); |
| 627 | if (status < 0) { |
| 628 | mlog_errno(status); |
| 629 | goto bail_commit; |
| 630 | } |
| 631 | |
| 632 | /* set the inodes dtime */ |
| 633 | status = ocfs2_journal_access(handle, inode, di_bh, |
| 634 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 635 | if (status < 0) { |
| 636 | mlog_errno(status); |
| 637 | goto bail_commit; |
| 638 | } |
| 639 | |
| 640 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); |
Marcin Slusarz | 4092d49 | 2007-12-25 15:52:59 +0100 | [diff] [blame] | 641 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 642 | |
| 643 | status = ocfs2_journal_dirty(handle, di_bh); |
| 644 | if (status < 0) { |
| 645 | mlog_errno(status); |
| 646 | goto bail_commit; |
| 647 | } |
| 648 | |
| 649 | ocfs2_remove_from_cache(inode, di_bh); |
| 650 | |
| 651 | status = ocfs2_free_dinode(handle, inode_alloc_inode, |
| 652 | inode_alloc_bh, di); |
| 653 | if (status < 0) |
| 654 | mlog_errno(status); |
| 655 | |
| 656 | bail_commit: |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 657 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 658 | bail_unlock: |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 659 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 660 | mutex_unlock(&inode_alloc_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 661 | brelse(inode_alloc_bh); |
| 662 | bail: |
| 663 | iput(inode_alloc_inode); |
| 664 | |
| 665 | return status; |
| 666 | } |
| 667 | |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 668 | /* |
| 669 | * Serialize with orphan dir recovery. If the process doing |
| 670 | * recovery on this orphan dir does an iget() with the dir |
| 671 | * i_mutex held, we'll deadlock here. Instead we detect this |
| 672 | * and exit early - recovery will wipe this inode for us. |
| 673 | */ |
| 674 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, |
| 675 | int slot) |
| 676 | { |
| 677 | int ret = 0; |
| 678 | |
| 679 | spin_lock(&osb->osb_lock); |
| 680 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { |
| 681 | mlog(0, "Recovery is happening on orphan dir %d, will skip " |
| 682 | "this inode\n", slot); |
| 683 | ret = -EDEADLK; |
| 684 | goto out; |
| 685 | } |
| 686 | /* This signals to the orphan recovery process that it should |
| 687 | * wait for us to handle the wipe. */ |
| 688 | osb->osb_orphan_wipes[slot]++; |
| 689 | out: |
| 690 | spin_unlock(&osb->osb_lock); |
| 691 | return ret; |
| 692 | } |
| 693 | |
| 694 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, |
| 695 | int slot) |
| 696 | { |
| 697 | spin_lock(&osb->osb_lock); |
| 698 | osb->osb_orphan_wipes[slot]--; |
| 699 | spin_unlock(&osb->osb_lock); |
| 700 | |
| 701 | wake_up(&osb->osb_wipe_event); |
| 702 | } |
| 703 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 704 | static int ocfs2_wipe_inode(struct inode *inode, |
| 705 | struct buffer_head *di_bh) |
| 706 | { |
| 707 | int status, orphaned_slot; |
| 708 | struct inode *orphan_dir_inode = NULL; |
| 709 | struct buffer_head *orphan_dir_bh = NULL; |
| 710 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 711 | struct ocfs2_dinode *di; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 712 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 713 | di = (struct ocfs2_dinode *) di_bh->b_data; |
| 714 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 715 | |
| 716 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); |
| 717 | if (status) |
| 718 | return status; |
| 719 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 720 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
| 721 | ORPHAN_DIR_SYSTEM_INODE, |
| 722 | orphaned_slot); |
| 723 | if (!orphan_dir_inode) { |
| 724 | status = -EEXIST; |
| 725 | mlog_errno(status); |
| 726 | goto bail; |
| 727 | } |
| 728 | |
| 729 | /* Lock the orphan dir. The lock will be held for the entire |
| 730 | * delete_inode operation. We do this now to avoid races with |
| 731 | * recovery completion on other nodes. */ |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 732 | mutex_lock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 733 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 734 | if (status < 0) { |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 735 | mutex_unlock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 736 | |
| 737 | mlog_errno(status); |
| 738 | goto bail; |
| 739 | } |
| 740 | |
| 741 | /* we do this while holding the orphan dir lock because we |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 742 | * don't want recovery being run from another node to try an |
| 743 | * inode delete underneath us -- this will result in two nodes |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 744 | * truncating the same file! */ |
| 745 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); |
| 746 | if (status < 0) { |
| 747 | mlog_errno(status); |
| 748 | goto bail_unlock_dir; |
| 749 | } |
| 750 | |
Tiger Yang | cf1d6c7 | 2008-08-18 17:11:00 +0800 | [diff] [blame] | 751 | /*Free extended attribute resources associated with this inode.*/ |
| 752 | status = ocfs2_xattr_remove(inode, di_bh); |
| 753 | if (status < 0) { |
| 754 | mlog_errno(status); |
| 755 | goto bail_unlock_dir; |
| 756 | } |
| 757 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 758 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
| 759 | orphan_dir_bh); |
| 760 | if (status < 0) |
| 761 | mlog_errno(status); |
| 762 | |
| 763 | bail_unlock_dir: |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 764 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 765 | mutex_unlock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 766 | brelse(orphan_dir_bh); |
| 767 | bail: |
| 768 | iput(orphan_dir_inode); |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 769 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 770 | |
| 771 | return status; |
| 772 | } |
| 773 | |
| 774 | /* There is a series of simple checks that should be done before a |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 775 | * trylock is even considered. Encapsulate those in this function. */ |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 776 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
| 777 | { |
| 778 | int ret = 0; |
| 779 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 780 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 781 | |
| 782 | /* We shouldn't be getting here for the root directory |
| 783 | * inode.. */ |
| 784 | if (inode == osb->root_inode) { |
| 785 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); |
| 786 | goto bail; |
| 787 | } |
| 788 | |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 789 | /* If we're coming from downconvert_thread we can't go into our own |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 790 | * voting [hello, deadlock city!], so unforuntately we just |
| 791 | * have to skip deleting this guy. That's OK though because |
| 792 | * the node who's doing the actual deleting should handle it |
| 793 | * anyway. */ |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 794 | if (current == osb->dc_task) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 795 | mlog(0, "Skipping delete of %lu because we're currently " |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 796 | "in downconvert\n", inode->i_ino); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 797 | goto bail; |
| 798 | } |
| 799 | |
| 800 | spin_lock(&oi->ip_lock); |
| 801 | /* OCFS2 *never* deletes system files. This should technically |
| 802 | * never get here as system file inodes should always have a |
| 803 | * positive link count. */ |
| 804 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 805 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
| 806 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 807 | goto bail_unlock; |
| 808 | } |
| 809 | |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 810 | /* If we have allowd wipe of this inode for another node, it |
| 811 | * will be marked here so we can safely skip it. Recovery will |
| 812 | * cleanup any inodes we might inadvertantly skip here. */ |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 813 | if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) { |
| 814 | mlog(0, "Skipping delete of %lu because another node " |
| 815 | "has done this for us.\n", inode->i_ino); |
| 816 | goto bail_unlock; |
| 817 | } |
| 818 | |
| 819 | ret = 1; |
| 820 | bail_unlock: |
| 821 | spin_unlock(&oi->ip_lock); |
| 822 | bail: |
| 823 | return ret; |
| 824 | } |
| 825 | |
| 826 | /* Query the cluster to determine whether we should wipe an inode from |
| 827 | * disk or not. |
| 828 | * |
| 829 | * Requires the inode to have the cluster lock. */ |
| 830 | static int ocfs2_query_inode_wipe(struct inode *inode, |
| 831 | struct buffer_head *di_bh, |
| 832 | int *wipe) |
| 833 | { |
| 834 | int status = 0; |
| 835 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 836 | struct ocfs2_dinode *di; |
| 837 | |
| 838 | *wipe = 0; |
| 839 | |
| 840 | /* While we were waiting for the cluster lock in |
| 841 | * ocfs2_delete_inode, another node might have asked to delete |
| 842 | * the inode. Recheck our flags to catch this. */ |
| 843 | if (!ocfs2_inode_is_valid_to_delete(inode)) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 844 | mlog(0, "Skipping delete of %llu because flags changed\n", |
| 845 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 846 | goto bail; |
| 847 | } |
| 848 | |
| 849 | /* Now that we have an up to date inode, we can double check |
| 850 | * the link count. */ |
| 851 | if (inode->i_nlink) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 852 | mlog(0, "Skipping delete of %llu because nlink = %u\n", |
| 853 | (unsigned long long)oi->ip_blkno, inode->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 854 | goto bail; |
| 855 | } |
| 856 | |
| 857 | /* Do some basic inode verification... */ |
| 858 | di = (struct ocfs2_dinode *) di_bh->b_data; |
| 859 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL))) { |
| 860 | /* for lack of a better error? */ |
| 861 | status = -EEXIST; |
| 862 | mlog(ML_ERROR, |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 863 | "Inode %llu (on-disk %llu) not orphaned! " |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 864 | "Disk flags 0x%x, inode flags 0x%x\n", |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 865 | (unsigned long long)oi->ip_blkno, |
Mark Fasheh | 1ca1a11 | 2007-04-27 16:01:25 -0700 | [diff] [blame] | 866 | (unsigned long long)le64_to_cpu(di->i_blkno), |
| 867 | le32_to_cpu(di->i_flags), oi->ip_flags); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 868 | goto bail; |
| 869 | } |
| 870 | |
| 871 | /* has someone already deleted us?! baaad... */ |
| 872 | if (di->i_dtime) { |
| 873 | status = -EEXIST; |
| 874 | mlog_errno(status); |
| 875 | goto bail; |
| 876 | } |
| 877 | |
Mark Fasheh | 6f16bf6 | 2007-03-20 17:17:54 -0700 | [diff] [blame] | 878 | /* |
| 879 | * This is how ocfs2 determines whether an inode is still live |
| 880 | * within the cluster. Every node takes a shared read lock on |
| 881 | * the inode open lock in ocfs2_read_locked_inode(). When we |
| 882 | * get to ->delete_inode(), each node tries to convert it's |
| 883 | * lock to an exclusive. Trylocks are serialized by the inode |
| 884 | * meta data lock. If the upconvert suceeds, we know the inode |
| 885 | * is no longer live and can be deleted. |
| 886 | * |
| 887 | * Though we call this with the meta data lock held, the |
| 888 | * trylock keeps us from ABBA deadlock. |
| 889 | */ |
| 890 | status = ocfs2_try_open_lock(inode, 1); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 891 | if (status == -EAGAIN) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 892 | status = 0; |
Joe Perches | 2759236 | 2007-11-19 17:53:34 -0800 | [diff] [blame] | 893 | mlog(0, "Skipping delete of %llu because it is in use on " |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 894 | "other nodes\n", (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 895 | goto bail; |
| 896 | } |
| 897 | if (status < 0) { |
| 898 | mlog_errno(status); |
| 899 | goto bail; |
| 900 | } |
| 901 | |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 902 | *wipe = 1; |
| 903 | mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n", |
| 904 | (unsigned long long)oi->ip_blkno, |
| 905 | le16_to_cpu(di->i_orphaned_slot)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 906 | |
| 907 | bail: |
| 908 | return status; |
| 909 | } |
| 910 | |
| 911 | /* Support function for ocfs2_delete_inode. Will help us keep the |
| 912 | * inode data in a consistent state for clear_inode. Always truncates |
| 913 | * pages, optionally sync's them first. */ |
| 914 | static void ocfs2_cleanup_delete_inode(struct inode *inode, |
| 915 | int sync_data) |
| 916 | { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 917 | mlog(0, "Cleanup inode %llu, sync = %d\n", |
| 918 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 919 | if (sync_data) |
| 920 | write_inode_now(inode, 1); |
| 921 | truncate_inode_pages(&inode->i_data, 0); |
| 922 | } |
| 923 | |
| 924 | void ocfs2_delete_inode(struct inode *inode) |
| 925 | { |
| 926 | int wipe, status; |
| 927 | sigset_t blocked, oldset; |
| 928 | struct buffer_head *di_bh = NULL; |
| 929 | |
| 930 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); |
| 931 | |
| 932 | if (is_bad_inode(inode)) { |
| 933 | mlog(0, "Skipping delete of bad inode\n"); |
| 934 | goto bail; |
| 935 | } |
| 936 | |
| 937 | if (!ocfs2_inode_is_valid_to_delete(inode)) { |
| 938 | /* It's probably not necessary to truncate_inode_pages |
| 939 | * here but we do it for safety anyway (it will most |
| 940 | * likely be a no-op anyway) */ |
| 941 | ocfs2_cleanup_delete_inode(inode, 0); |
| 942 | goto bail; |
| 943 | } |
| 944 | |
| 945 | /* We want to block signals in delete_inode as the lock and |
| 946 | * messaging paths may return us -ERESTARTSYS. Which would |
| 947 | * cause us to exit early, resulting in inodes being orphaned |
| 948 | * forever. */ |
| 949 | sigfillset(&blocked); |
| 950 | status = sigprocmask(SIG_BLOCK, &blocked, &oldset); |
| 951 | if (status < 0) { |
| 952 | mlog_errno(status); |
| 953 | ocfs2_cleanup_delete_inode(inode, 1); |
| 954 | goto bail; |
| 955 | } |
| 956 | |
| 957 | /* Lock down the inode. This gives us an up to date view of |
| 958 | * it's metadata (for verification), and allows us to |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 959 | * serialize delete_inode on multiple nodes. |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 960 | * |
| 961 | * Even though we might be doing a truncate, we don't take the |
| 962 | * allocation lock here as it won't be needed - nobody will |
| 963 | * have the file open. |
| 964 | */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 965 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 966 | if (status < 0) { |
| 967 | if (status != -ENOENT) |
| 968 | mlog_errno(status); |
| 969 | ocfs2_cleanup_delete_inode(inode, 0); |
| 970 | goto bail_unblock; |
| 971 | } |
| 972 | |
| 973 | /* Query the cluster. This will be the final decision made |
| 974 | * before we go ahead and wipe the inode. */ |
| 975 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); |
| 976 | if (!wipe || status < 0) { |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 977 | /* Error and remote inode busy both mean we won't be |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 978 | * removing the inode, so they take almost the same |
| 979 | * path. */ |
| 980 | if (status < 0) |
| 981 | mlog_errno(status); |
| 982 | |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 983 | /* Someone in the cluster has disallowed a wipe of |
| 984 | * this inode, or it was never completely |
| 985 | * orphaned. Write out the pages and exit now. */ |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 986 | ocfs2_cleanup_delete_inode(inode, 1); |
| 987 | goto bail_unlock_inode; |
| 988 | } |
| 989 | |
| 990 | ocfs2_cleanup_delete_inode(inode, 0); |
| 991 | |
| 992 | status = ocfs2_wipe_inode(inode, di_bh); |
| 993 | if (status < 0) { |
Mark Fasheh | b4df6ed | 2006-02-22 17:35:08 -0800 | [diff] [blame] | 994 | if (status != -EDEADLK) |
| 995 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 996 | goto bail_unlock_inode; |
| 997 | } |
| 998 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 999 | /* |
| 1000 | * Mark the inode as successfully deleted. |
| 1001 | * |
| 1002 | * This is important for ocfs2_clear_inode() as it will check |
| 1003 | * this flag and skip any checkpointing work |
| 1004 | * |
| 1005 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate |
| 1006 | * the LVB for other nodes. |
| 1007 | */ |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1008 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
| 1009 | |
| 1010 | bail_unlock_inode: |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1011 | ocfs2_inode_unlock(inode, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1012 | brelse(di_bh); |
| 1013 | bail_unblock: |
| 1014 | status = sigprocmask(SIG_SETMASK, &oldset, NULL); |
| 1015 | if (status < 0) |
| 1016 | mlog_errno(status); |
| 1017 | bail: |
| 1018 | clear_inode(inode); |
| 1019 | mlog_exit_void(); |
| 1020 | } |
| 1021 | |
| 1022 | void ocfs2_clear_inode(struct inode *inode) |
| 1023 | { |
| 1024 | int status; |
| 1025 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 1026 | |
| 1027 | mlog_entry_void(); |
| 1028 | |
| 1029 | if (!inode) |
| 1030 | goto bail; |
| 1031 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1032 | mlog(0, "Clearing inode: %llu, nlink = %u\n", |
| 1033 | (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1034 | |
| 1035 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, |
| 1036 | "Inode=%lu\n", inode->i_ino); |
| 1037 | |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 1038 | /* To preven remote deletes we hold open lock before, now it |
| 1039 | * is time to unlock PR and EX open locks. */ |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 1040 | ocfs2_open_unlock(inode); |
| 1041 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1042 | /* Do these before all the other work so that we don't bounce |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 1043 | * the downconvert thread while waiting to destroy the locks. */ |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1044 | ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1045 | ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 1046 | ocfs2_mark_lockres_freeing(&oi->ip_open_lockres); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1047 | |
| 1048 | /* We very well may get a clear_inode before all an inodes |
| 1049 | * metadata has hit disk. Of course, we can't drop any cluster |
| 1050 | * locks until the journal has finished with it. The only |
| 1051 | * exception here are successfully wiped inodes - their |
| 1052 | * metadata can now be considered to be part of the system |
| 1053 | * inodes from which it came. */ |
| 1054 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) |
| 1055 | ocfs2_checkpoint_inode(inode); |
| 1056 | |
| 1057 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1058 | "Clear inode of %llu, inode has io markers\n", |
| 1059 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1060 | |
Mark Fasheh | 8341897 | 2007-04-23 18:53:12 -0700 | [diff] [blame] | 1061 | ocfs2_extent_map_trunc(inode, 0); |
| 1062 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1063 | status = ocfs2_drop_inode_locks(inode); |
| 1064 | if (status < 0) |
| 1065 | mlog_errno(status); |
| 1066 | |
| 1067 | ocfs2_lock_res_free(&oi->ip_rw_lockres); |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1068 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 1069 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1070 | |
| 1071 | ocfs2_metadata_cache_purge(inode); |
| 1072 | |
| 1073 | mlog_bug_on_msg(oi->ip_metadata_cache.ci_num_cached, |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1074 | "Clear inode of %llu, inode has %u cache items\n", |
| 1075 | (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] | 1076 | |
| 1077 | mlog_bug_on_msg(!(oi->ip_flags & OCFS2_INODE_CACHE_INLINE), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1078 | "Clear inode of %llu, inode has a bad flag\n", |
| 1079 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1080 | |
| 1081 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1082 | "Clear inode of %llu, inode is locked\n", |
| 1083 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1084 | |
Mark Fasheh | 251b6ec | 2006-01-10 15:41:43 -0800 | [diff] [blame] | 1085 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1086 | "Clear inode of %llu, io_mutex is locked\n", |
| 1087 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | 251b6ec | 2006-01-10 15:41:43 -0800 | [diff] [blame] | 1088 | mutex_unlock(&oi->ip_io_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1089 | |
| 1090 | /* |
| 1091 | * down_trylock() returns 0, down_write_trylock() returns 1 |
| 1092 | * kernel 1, world 0 |
| 1093 | */ |
| 1094 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1095 | "Clear inode of %llu, alloc_sem is locked\n", |
| 1096 | (unsigned long long)oi->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1097 | up_write(&oi->ip_alloc_sem); |
| 1098 | |
| 1099 | mlog_bug_on_msg(oi->ip_open_count, |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1100 | "Clear inode of %llu has open count %d\n", |
| 1101 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1102 | |
| 1103 | /* Clear all other flags. */ |
| 1104 | oi->ip_flags = OCFS2_INODE_CACHE_INLINE; |
| 1105 | oi->ip_created_trans = 0; |
| 1106 | oi->ip_last_trans = 0; |
| 1107 | oi->ip_dir_start_lookup = 0; |
| 1108 | oi->ip_blkno = 0ULL; |
Joel Becker | 2b4e30f | 2008-09-03 20:03:41 -0700 | [diff] [blame] | 1109 | jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal, |
| 1110 | &oi->ip_jinode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1111 | |
| 1112 | bail: |
| 1113 | mlog_exit_void(); |
| 1114 | } |
| 1115 | |
| 1116 | /* Called under inode_lock, with no more references on the |
| 1117 | * struct inode, so it's safe here to check the flags field |
| 1118 | * and to manipulate i_nlink without any other locks. */ |
| 1119 | void ocfs2_drop_inode(struct inode *inode) |
| 1120 | { |
| 1121 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 1122 | |
| 1123 | mlog_entry_void(); |
| 1124 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1125 | mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n", |
| 1126 | (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1127 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1128 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
| 1129 | generic_delete_inode(inode); |
| 1130 | else |
| 1131 | generic_drop_inode(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1132 | |
| 1133 | mlog_exit_void(); |
| 1134 | } |
| 1135 | |
| 1136 | /* |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1137 | * This is called from our getattr. |
| 1138 | */ |
| 1139 | int ocfs2_inode_revalidate(struct dentry *dentry) |
| 1140 | { |
| 1141 | struct inode *inode = dentry->d_inode; |
| 1142 | int status = 0; |
| 1143 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1144 | mlog_entry("(inode = 0x%p, ino = %llu)\n", inode, |
| 1145 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1146 | |
| 1147 | if (!inode) { |
| 1148 | mlog(0, "eep, no inode!\n"); |
| 1149 | status = -ENOENT; |
| 1150 | goto bail; |
| 1151 | } |
| 1152 | |
| 1153 | spin_lock(&OCFS2_I(inode)->ip_lock); |
| 1154 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { |
| 1155 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1156 | mlog(0, "inode deleted!\n"); |
| 1157 | status = -ENOENT; |
| 1158 | goto bail; |
| 1159 | } |
| 1160 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1161 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1162 | /* Let ocfs2_inode_lock do the work of updating our struct |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1163 | * inode for us. */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1164 | status = ocfs2_inode_lock(inode, NULL, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1165 | if (status < 0) { |
| 1166 | if (status != -ENOENT) |
| 1167 | mlog_errno(status); |
| 1168 | goto bail; |
| 1169 | } |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1170 | ocfs2_inode_unlock(inode, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1171 | bail: |
| 1172 | mlog_exit(status); |
| 1173 | |
| 1174 | return status; |
| 1175 | } |
| 1176 | |
| 1177 | /* |
| 1178 | * Updates a disk inode from a |
| 1179 | * struct inode. |
| 1180 | * Only takes ip_lock. |
| 1181 | */ |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1182 | int ocfs2_mark_inode_dirty(handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1183 | struct inode *inode, |
| 1184 | struct buffer_head *bh) |
| 1185 | { |
| 1186 | int status; |
| 1187 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; |
| 1188 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1189 | mlog_entry("(inode %llu)\n", |
| 1190 | (unsigned long long)OCFS2_I(inode)->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1191 | |
| 1192 | status = ocfs2_journal_access(handle, inode, bh, |
| 1193 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1194 | if (status < 0) { |
| 1195 | mlog_errno(status); |
| 1196 | goto leave; |
| 1197 | } |
| 1198 | |
| 1199 | spin_lock(&OCFS2_I(inode)->ip_lock); |
| 1200 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); |
Jan Kara | 6e4b0d5 | 2007-04-27 11:08:01 -0700 | [diff] [blame] | 1201 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 1202 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
Mark Fasheh | 15b1e36 | 2007-09-07 13:58:15 -0700 | [diff] [blame] | 1203 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1204 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1205 | |
| 1206 | fe->i_size = cpu_to_le64(i_size_read(inode)); |
| 1207 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
| 1208 | fe->i_uid = cpu_to_le32(inode->i_uid); |
| 1209 | fe->i_gid = cpu_to_le32(inode->i_gid); |
| 1210 | fe->i_mode = cpu_to_le16(inode->i_mode); |
| 1211 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); |
| 1212 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); |
| 1213 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
| 1214 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); |
| 1215 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); |
| 1216 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); |
| 1217 | |
| 1218 | status = ocfs2_journal_dirty(handle, bh); |
| 1219 | if (status < 0) |
| 1220 | mlog_errno(status); |
| 1221 | |
| 1222 | status = 0; |
| 1223 | leave: |
| 1224 | |
| 1225 | mlog_exit(status); |
| 1226 | return status; |
| 1227 | } |
| 1228 | |
| 1229 | /* |
| 1230 | * |
| 1231 | * Updates a struct inode from a disk inode. |
| 1232 | * does no i/o, only takes ip_lock. |
| 1233 | */ |
| 1234 | void ocfs2_refresh_inode(struct inode *inode, |
| 1235 | struct ocfs2_dinode *fe) |
| 1236 | { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1237 | spin_lock(&OCFS2_I(inode)->ip_lock); |
| 1238 | |
| 1239 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 1240 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
Mark Fasheh | 15b1e36 | 2007-09-07 13:58:15 -0700 | [diff] [blame] | 1241 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 1242 | ocfs2_set_inode_flags(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1243 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 1244 | inode->i_nlink = le16_to_cpu(fe->i_links_count); |
| 1245 | inode->i_uid = le32_to_cpu(fe->i_uid); |
| 1246 | inode->i_gid = le32_to_cpu(fe->i_gid); |
| 1247 | inode->i_mode = le16_to_cpu(fe->i_mode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1248 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
| 1249 | inode->i_blocks = 0; |
| 1250 | else |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame] | 1251 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1252 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
| 1253 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); |
| 1254 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); |
| 1255 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); |
| 1256 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); |
| 1257 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); |
| 1258 | |
| 1259 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1260 | } |