Lines Matching refs:inode
3 * linux/fs/ext2/inode.c
12 * linux/fs/minix/inode.c
43 static int __ext2_write_inode(struct inode *inode, int do_sync);
46 * Test whether an inode is a fast symlink.
48 static inline int ext2_inode_is_fast_symlink(struct inode *inode)
50 int ea_blocks = EXT2_I(inode)->i_file_acl ?
51 (inode->i_sb->s_blocksize >> 9) : 0;
53 return (S_ISLNK(inode->i_mode) &&
54 inode->i_blocks - ea_blocks == 0);
57 static void ext2_truncate_blocks(struct inode *inode, loff_t offset);
61 struct inode *inode = mapping->host;
63 if (to > inode->i_size) {
64 truncate_pagecache(inode, inode->i_size);
65 ext2_truncate_blocks(inode, inode->i_size);
72 void ext2_evict_inode(struct inode * inode)
77 if (!inode->i_nlink && !is_bad_inode(inode)) {
79 dquot_initialize(inode);
81 dquot_drop(inode);
84 truncate_inode_pages_final(&inode->i_data);
87 sb_start_intwrite(inode->i_sb);
89 EXT2_I(inode)->i_dtime = ktime_get_real_seconds();
90 mark_inode_dirty(inode);
91 __ext2_write_inode(inode, inode_needs_sync(inode));
93 inode->i_size = 0;
94 if (inode->i_blocks)
95 ext2_truncate_blocks(inode, 0);
96 ext2_xattr_delete_inode(inode);
99 invalidate_inode_buffers(inode);
100 clear_inode(inode);
102 ext2_discard_reservation(inode);
103 rsv = EXT2_I(inode)->i_block_alloc_info;
104 EXT2_I(inode)->i_block_alloc_info = NULL;
109 ext2_free_inode(inode);
110 sb_end_intwrite(inode->i_sb);
135 * @inode: inode in question (we are only interested in its superblock)
141 * for UNIX filesystems - tree of pointers anchored in the inode, with
150 * inode->i_sb).
163 static int ext2_block_to_path(struct inode *inode,
166 int ptrs = EXT2_ADDR_PER_BLOCK(inode->i_sb);
167 int ptrs_bits = EXT2_ADDR_PER_BLOCK_BITS(inode->i_sb);
175 ext2_msg(inode->i_sb, KERN_WARNING,
196 ext2_msg(inode->i_sb, KERN_WARNING,
207 * @inode: inode in question
209 * @offsets: offsets of pointers in inode/indirect blocks
218 * number (it points into struct inode for i==0 and into the bh->b_data
234 static Indirect *ext2_get_branch(struct inode *inode,
240 struct super_block *sb = inode->i_sb;
246 add_chain (chain, NULL, EXT2_I(inode)->i_data + *offsets);
253 read_lock(&EXT2_I(inode)->i_meta_lock);
257 read_unlock(&EXT2_I(inode)->i_meta_lock);
264 read_unlock(&EXT2_I(inode)->i_meta_lock);
276 * @inode: owner
284 * + if pointer will live in inode - allocate in the same cylinder group.
287 * prevent it from clashing with concurrent allocations for a different inode
294 static ext2_fsblk_t ext2_find_near(struct inode *inode, Indirect *ind)
296 struct ext2_inode_info *ei = EXT2_I(inode);
312 * It is going to be referred from inode itself? OK, just put it into
315 bg_start = ext2_group_first_block_no(inode->i_sb, ei->i_block_group);
317 (EXT2_BLOCKS_PER_GROUP(inode->i_sb) / 16);
323 * @inode: owner
330 static inline ext2_fsblk_t ext2_find_goal(struct inode *inode, long block,
335 block_i = EXT2_I(inode)->i_block_alloc_info;
346 return ext2_find_near(inode, partial);
389 * @inode: Owner.
399 static int ext2_alloc_blocks(struct inode *inode,
422 current_block = ext2_new_blocks(inode, goal, &count, err, 0);
446 ext2_free_blocks(inode, new_blocks[i], 1);
448 mark_inode_dirty(inode);
454 * @inode: owner
464 * inode. It stores the information about that chain in the branch[], in
479 static int ext2_alloc_branch(struct inode *inode,
483 int blocksize = inode->i_sb->s_blocksize;
491 num = ext2_alloc_blocks(inode, goal, indirect_blks,
506 bh = sb_getblk(inode->i_sb, new_blocks[n-1]);
529 mark_buffer_dirty_inode(bh, inode);
530 /* We used to sync bh here if IS_SYNC(inode).
534 if (S_ISDIR(inode->i_mode) && IS_DIRSYNC(inode))
544 ext2_free_blocks(inode, new_blocks[i], 1);
545 ext2_free_blocks(inode, new_blocks[i], num);
550 * ext2_splice_branch - splice the allocated branch onto inode.
551 * @inode: owner
558 * inode (->i_blocks, etc.). In case of success we end up with the full
561 static void ext2_splice_branch(struct inode *inode,
568 block_i = EXT2_I(inode)->i_block_alloc_info;
576 * Update the host buffer_head or inode to point to more just allocated
600 mark_buffer_dirty_inode(where->bh, inode);
602 inode_set_ctime_current(inode);
603 mark_inode_dirty(inode);
616 * reachable from inode.
624 static int ext2_get_blocks(struct inode *inode,
637 struct ext2_inode_info *ei = EXT2_I(inode);
643 depth = ext2_block_to_path(inode,iblock,offsets,&blocks_to_boundary);
648 partial = ext2_get_branch(inode, depth, offsets, chain, &err);
701 partial = ext2_get_branch(inode, depth, offsets, chain, &err);
718 if (S_ISREG(inode->i_mode) && (!ei->i_block_alloc_info))
719 ext2_init_block_alloc_info(inode);
721 goal = ext2_find_goal(inode, iblock, partial);
734 err = ext2_alloc_branch(inode, indirect_blks, &count, goal,
742 if (IS_DAX(inode)) {
747 clean_bdev_aliases(inode->i_sb->s_bdev,
755 err = sb_issue_zeroout(inode->i_sb,
765 ext2_splice_branch(inode, iblock, partial, indirect_blks, count);
783 int ext2_get_block(struct inode *inode, sector_t iblock,
786 unsigned max_blocks = bh_result->b_size >> inode->i_blkbits;
791 ret = ext2_get_blocks(inode, iblock, max_blocks, &bno, &new, &boundary,
796 map_bh(bh_result, inode->i_sb, bno);
797 bh_result->b_size = (ret << inode->i_blkbits);
806 static int ext2_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
809 unsigned int blkbits = inode->i_blkbits;
812 struct ext2_sb_info *sbi = EXT2_SB(inode->i_sb);
824 (first_block << blkbits) < i_size_read(inode))
832 if ((flags & IOMAP_WRITE) && offset + length > i_size_read(inode))
835 ret = ext2_get_blocks(inode, first_block, max_blocks,
845 iomap->bdev = inode->i_sb->s_bdev;
872 ext2_iomap_end(struct inode *inode, loff_t offset, loff_t length,
885 ext2_write_failed(inode->i_mapping, offset + length);
894 int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
899 inode_lock(inode);
900 len = min_t(u64, len, i_size_read(inode));
901 ret = iomap_fiemap(inode, fieinfo, start, len, &ext2_iomap_ops);
902 inode_unlock(inode);
996 * @inode: inode in question
1024 * c) free the subtrees growing from the inode past the @chain[0].p
1028 static Indirect *ext2_find_shared(struct inode *inode,
1040 partial = ext2_get_branch(inode, k, offsets, chain, &err);
1047 write_lock(&EXT2_I(inode)->i_meta_lock);
1049 write_unlock(&EXT2_I(inode)->i_meta_lock);
1057 * of branch is all ours and does not grow immediately from the inode
1066 write_unlock(&EXT2_I(inode)->i_meta_lock);
1079 * @inode: inode we are dealing with
1084 * stored as little-endian 32-bit) and updating @inode->i_blocks
1087 static inline void ext2_free_data(struct inode *inode, __le32 *p, __le32 *q)
1102 ext2_free_blocks (inode, block_to_free, count);
1103 mark_inode_dirty(inode);
1111 ext2_free_blocks (inode, block_to_free, count);
1112 mark_inode_dirty(inode);
1118 * @inode: inode we are dealing with
1124 * stored as little-endian 32-bit) and updating @inode->i_blocks
1127 static void ext2_free_branches(struct inode *inode, __le32 *p, __le32 *q, int depth)
1133 int addr_per_block = EXT2_ADDR_PER_BLOCK(inode->i_sb);
1139 bh = sb_bread(inode->i_sb, nr);
1145 ext2_error(inode->i_sb, "ext2_free_branches",
1146 "Read failure, inode=%ld, block=%ld",
1147 inode->i_ino, nr);
1150 ext2_free_branches(inode,
1155 ext2_free_blocks(inode, nr, 1);
1156 mark_inode_dirty(inode);
1159 ext2_free_data(inode, p, q);
1163 static void __ext2_truncate_blocks(struct inode *inode, loff_t offset)
1165 __le32 *i_data = EXT2_I(inode)->i_data;
1166 struct ext2_inode_info *ei = EXT2_I(inode);
1167 int addr_per_block = EXT2_ADDR_PER_BLOCK(inode->i_sb);
1175 blocksize = inode->i_sb->s_blocksize;
1176 iblock = (offset + blocksize-1) >> EXT2_BLOCK_SIZE_BITS(inode->i_sb);
1179 WARN_ON(!rwsem_is_locked(&inode->i_mapping->invalidate_lock));
1182 n = ext2_block_to_path(inode, iblock, offsets, NULL);
1193 ext2_free_data(inode, i_data+offsets[0],
1198 partial = ext2_find_shared(inode, n, offsets, chain, &nr);
1202 mark_inode_dirty(inode);
1204 mark_buffer_dirty_inode(partial->bh, inode);
1205 ext2_free_branches(inode, &nr, &nr+1, (chain+n-1) - partial);
1209 ext2_free_branches(inode,
1213 mark_buffer_dirty_inode(partial->bh, inode);
1224 mark_inode_dirty(inode);
1225 ext2_free_branches(inode, &nr, &nr+1, 1);
1232 mark_inode_dirty(inode);
1233 ext2_free_branches(inode, &nr, &nr+1, 2);
1240 mark_inode_dirty(inode);
1241 ext2_free_branches(inode, &nr, &nr+1, 3);
1248 ext2_discard_reservation(inode);
1253 static void ext2_truncate_blocks(struct inode *inode, loff_t offset)
1255 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
1256 S_ISLNK(inode->i_mode)))
1258 if (ext2_inode_is_fast_symlink(inode))
1261 filemap_invalidate_lock(inode->i_mapping);
1262 __ext2_truncate_blocks(inode, offset);
1263 filemap_invalidate_unlock(inode->i_mapping);
1266 static int ext2_setsize(struct inode *inode, loff_t newsize)
1270 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
1271 S_ISLNK(inode->i_mode)))
1273 if (ext2_inode_is_fast_symlink(inode))
1275 if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
1278 inode_dio_wait(inode);
1280 if (IS_DAX(inode))
1281 error = dax_truncate_page(inode, newsize, NULL,
1284 error = block_truncate_page(inode->i_mapping,
1289 filemap_invalidate_lock(inode->i_mapping);
1290 truncate_setsize(inode, newsize);
1291 __ext2_truncate_blocks(inode, newsize);
1292 filemap_invalidate_unlock(inode->i_mapping);
1294 inode->i_mtime = inode_set_ctime_current(inode);
1295 if (inode_needs_sync(inode)) {
1296 sync_mapping_buffers(inode->i_mapping);
1297 sync_inode_metadata(inode, 1);
1299 mark_inode_dirty(inode);
1324 * Figure out the offset within the block group inode table
1337 ext2_error(sb, "ext2_get_inode", "bad inode number: %lu",
1342 "unable to read inode block - inode=%lu, block=%lu",
1348 void ext2_set_inode_flags(struct inode *inode)
1350 unsigned int flags = EXT2_I(inode)->i_flags;
1352 inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
1355 inode->i_flags |= S_SYNC;
1357 inode->i_flags |= S_APPEND;
1359 inode->i_flags |= S_IMMUTABLE;
1361 inode->i_flags |= S_NOATIME;
1363 inode->i_flags |= S_DIRSYNC;
1364 if (test_opt(inode->i_sb, DAX) && S_ISREG(inode->i_mode))
1365 inode->i_flags |= S_DAX;
1368 void ext2_set_file_ops(struct inode *inode)
1370 inode->i_op = &ext2_file_inode_operations;
1371 inode->i_fop = &ext2_file_operations;
1372 if (IS_DAX(inode))
1373 inode->i_mapping->a_ops = &ext2_dax_aops;
1375 inode->i_mapping->a_ops = &ext2_aops;
1378 struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
1383 struct inode *inode;
1389 inode = iget_locked(sb, ino);
1390 if (!inode)
1392 if (!(inode->i_state & I_NEW))
1393 return inode;
1395 ei = EXT2_I(inode);
1398 raw_inode = ext2_get_inode(inode->i_sb, ino, &bh);
1404 inode->i_mode = le16_to_cpu(raw_inode->i_mode);
1407 if (!(test_opt (inode->i_sb, NO_UID32))) {
1411 i_uid_write(inode, i_uid);
1412 i_gid_write(inode, i_gid);
1413 set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
1414 inode->i_size = le32_to_cpu(raw_inode->i_size);
1415 inode->i_atime.tv_sec = (signed)le32_to_cpu(raw_inode->i_atime);
1416 inode_set_ctime(inode, (signed)le32_to_cpu(raw_inode->i_ctime), 0);
1417 inode->i_mtime.tv_sec = (signed)le32_to_cpu(raw_inode->i_mtime);
1418 inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = 0;
1420 /* We now have enough fields to check if the inode was active or not.
1425 if (inode->i_nlink == 0 && (inode->i_mode == 0 || ei->i_dtime)) {
1426 /* this inode is deleted */
1430 inode->i_blocks = le32_to_cpu(raw_inode->i_blocks);
1432 ext2_set_inode_flags(inode);
1447 if (S_ISREG(inode->i_mode))
1448 inode->i_size |= ((__u64)le32_to_cpu(raw_inode->i_size_high)) << 32;
1451 if (i_size_read(inode) < 0) {
1456 inode->i_generation = le32_to_cpu(raw_inode->i_generation);
1458 ei->i_block_group = (ino - 1) / EXT2_INODES_PER_GROUP(inode->i_sb);
1462 * NOTE! The in-memory inode i_data array is in little-endian order
1468 if (S_ISREG(inode->i_mode)) {
1469 ext2_set_file_ops(inode);
1470 } else if (S_ISDIR(inode->i_mode)) {
1471 inode->i_op = &ext2_dir_inode_operations;
1472 inode->i_fop = &ext2_dir_operations;
1473 inode->i_mapping->a_ops = &ext2_aops;
1474 } else if (S_ISLNK(inode->i_mode)) {
1475 if (ext2_inode_is_fast_symlink(inode)) {
1476 inode->i_link = (char *)ei->i_data;
1477 inode->i_op = &ext2_fast_symlink_inode_operations;
1478 nd_terminate_link(ei->i_data, inode->i_size,
1481 inode->i_op = &ext2_symlink_inode_operations;
1482 inode_nohighmem(inode);
1483 inode->i_mapping->a_ops = &ext2_aops;
1486 inode->i_op = &ext2_special_inode_operations;
1488 init_special_inode(inode, inode->i_mode,
1491 init_special_inode(inode, inode->i_mode,
1495 unlock_new_inode(inode);
1496 return inode;
1500 iget_failed(inode);
1504 static int __ext2_write_inode(struct inode *inode, int do_sync)
1506 struct ext2_inode_info *ei = EXT2_I(inode);
1507 struct super_block *sb = inode->i_sb;
1508 ino_t ino = inode->i_ino;
1509 uid_t uid = i_uid_read(inode);
1510 gid_t gid = i_gid_read(inode);
1519 /* For fields not tracking in the in-memory inode,
1524 raw_inode->i_mode = cpu_to_le16(inode->i_mode);
1545 raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
1546 raw_inode->i_size = cpu_to_le32(inode->i_size);
1547 raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
1548 raw_inode->i_ctime = cpu_to_le32(inode_get_ctime(inode).tv_sec);
1549 raw_inode->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec);
1551 raw_inode->i_blocks = cpu_to_le32(inode->i_blocks);
1558 if (!S_ISREG(inode->i_mode))
1561 raw_inode->i_size_high = cpu_to_le32(inode->i_size >> 32);
1562 if (inode->i_size > 0x7fffffffULL) {
1580 raw_inode->i_generation = cpu_to_le32(inode->i_generation);
1581 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
1582 if (old_valid_dev(inode->i_rdev)) {
1584 cpu_to_le32(old_encode_dev(inode->i_rdev));
1589 cpu_to_le32(new_encode_dev(inode->i_rdev));
1598 printk ("IO error syncing ext2 inode [%s:%08lx]\n",
1608 int ext2_write_inode(struct inode *inode, struct writeback_control *wbc)
1610 return __ext2_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
1616 struct inode *inode = d_inode(path->dentry);
1617 struct ext2_inode_info *ei = EXT2_I(inode);
1635 generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat);
1642 struct inode *inode = d_inode(dentry);
1649 if (is_quota_modification(&nop_mnt_idmap, inode, iattr)) {
1650 error = dquot_initialize(inode);
1654 if (i_uid_needs_update(&nop_mnt_idmap, iattr, inode) ||
1655 i_gid_needs_update(&nop_mnt_idmap, iattr, inode)) {
1656 error = dquot_transfer(&nop_mnt_idmap, inode, iattr);
1660 if (iattr->ia_valid & ATTR_SIZE && iattr->ia_size != inode->i_size) {
1661 error = ext2_setsize(inode, iattr->ia_size);
1665 setattr_copy(&nop_mnt_idmap, inode, iattr);
1667 error = posix_acl_chmod(&nop_mnt_idmap, dentry, inode->i_mode);
1668 mark_inode_dirty(inode);