disk-io.c (fcebe4562dec83b3f8d3088d77584727b09130b2) disk-io.c (faa2dbf004e89e8f7ccd28fbe6f07c308417b8ae)
1/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

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1105 u64 bytenr, u32 blocksize)
1106{
1107 return find_extent_buffer(root->fs_info, bytenr);
1108}
1109
1110struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
1111 u64 bytenr, u32 blocksize)
1112{
1/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

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1105 u64 bytenr, u32 blocksize)
1106{
1107 return find_extent_buffer(root->fs_info, bytenr);
1108}
1109
1110struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
1111 u64 bytenr, u32 blocksize)
1112{
1113#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
1114 if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state)))
1115 return alloc_test_extent_buffer(root->fs_info, bytenr,
1116 blocksize);
1117#endif
1113 return alloc_extent_buffer(root->fs_info, bytenr, blocksize);
1114}
1115
1116
1117int btrfs_write_tree_block(struct extent_buffer *buf)
1118{
1119 return filemap_fdatawrite_range(buf->pages[0]->mapping, buf->start,
1120 buf->start + buf->len - 1);

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1283{
1284 struct btrfs_root *root;
1285
1286 root = btrfs_alloc_root(NULL);
1287 if (!root)
1288 return ERR_PTR(-ENOMEM);
1289 __setup_root(4096, 4096, 4096, 4096, root, NULL, 1);
1290 set_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state);
1118 return alloc_extent_buffer(root->fs_info, bytenr, blocksize);
1119}
1120
1121
1122int btrfs_write_tree_block(struct extent_buffer *buf)
1123{
1124 return filemap_fdatawrite_range(buf->pages[0]->mapping, buf->start,
1125 buf->start + buf->len - 1);

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1288{
1289 struct btrfs_root *root;
1290
1291 root = btrfs_alloc_root(NULL);
1292 if (!root)
1293 return ERR_PTR(-ENOMEM);
1294 __setup_root(4096, 4096, 4096, 4096, root, NULL, 1);
1295 set_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state);
1296 root->alloc_bytenr = 0;
1291
1292 return root;
1293}
1294#endif
1295
1296struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
1297 struct btrfs_fs_info *fs_info,
1298 u64 objectid)

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2084 free_root_extent_buffers(info->extent_root);
2085 free_root_extent_buffers(info->csum_root);
2086 free_root_extent_buffers(info->quota_root);
2087 free_root_extent_buffers(info->uuid_root);
2088 if (chunk_root)
2089 free_root_extent_buffers(info->chunk_root);
2090}
2091
1297
1298 return root;
1299}
1300#endif
1301
1302struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
1303 struct btrfs_fs_info *fs_info,
1304 u64 objectid)

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2090 free_root_extent_buffers(info->extent_root);
2091 free_root_extent_buffers(info->csum_root);
2092 free_root_extent_buffers(info->quota_root);
2093 free_root_extent_buffers(info->uuid_root);
2094 if (chunk_root)
2095 free_root_extent_buffers(info->chunk_root);
2096}
2097
2092static void del_fs_roots(struct btrfs_fs_info *fs_info)
2098void btrfs_free_fs_roots(struct btrfs_fs_info *fs_info)
2093{
2094 int ret;
2095 struct btrfs_root *gang[8];
2096 int i;
2097
2098 while (!list_empty(&fs_info->dead_roots)) {
2099 gang[0] = list_entry(fs_info->dead_roots.next,
2100 struct btrfs_root, root_list);

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2964
2965 return 0;
2966
2967fail_qgroup:
2968 btrfs_free_qgroup_config(fs_info);
2969fail_trans_kthread:
2970 kthread_stop(fs_info->transaction_kthread);
2971 btrfs_cleanup_transaction(fs_info->tree_root);
2099{
2100 int ret;
2101 struct btrfs_root *gang[8];
2102 int i;
2103
2104 while (!list_empty(&fs_info->dead_roots)) {
2105 gang[0] = list_entry(fs_info->dead_roots.next,
2106 struct btrfs_root, root_list);

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2970
2971 return 0;
2972
2973fail_qgroup:
2974 btrfs_free_qgroup_config(fs_info);
2975fail_trans_kthread:
2976 kthread_stop(fs_info->transaction_kthread);
2977 btrfs_cleanup_transaction(fs_info->tree_root);
2972 del_fs_roots(fs_info);
2978 btrfs_free_fs_roots(fs_info);
2973fail_cleaner:
2974 kthread_stop(fs_info->cleaner_kthread);
2975
2976 /*
2977 * make sure we're done with the btree inode before we stop our
2978 * kthreads
2979 */
2980 filemap_write_and_wait(fs_info->btree_inode->i_mapping);

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3499 spin_unlock(&fs_info->fs_roots_radix_lock);
3500
3501 if (btrfs_root_refs(&root->root_item) == 0)
3502 synchronize_srcu(&fs_info->subvol_srcu);
3503
3504 if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state))
3505 btrfs_free_log(NULL, root);
3506
2979fail_cleaner:
2980 kthread_stop(fs_info->cleaner_kthread);
2981
2982 /*
2983 * make sure we're done with the btree inode before we stop our
2984 * kthreads
2985 */
2986 filemap_write_and_wait(fs_info->btree_inode->i_mapping);

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3505 spin_unlock(&fs_info->fs_roots_radix_lock);
3506
3507 if (btrfs_root_refs(&root->root_item) == 0)
3508 synchronize_srcu(&fs_info->subvol_srcu);
3509
3510 if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state))
3511 btrfs_free_log(NULL, root);
3512
3507 __btrfs_remove_free_space_cache(root->free_ino_pinned);
3508 __btrfs_remove_free_space_cache(root->free_ino_ctl);
3513 if (root->free_ino_pinned)
3514 __btrfs_remove_free_space_cache(root->free_ino_pinned);
3515 if (root->free_ino_ctl)
3516 __btrfs_remove_free_space_cache(root->free_ino_ctl);
3509 free_fs_root(root);
3510}
3511
3512static void free_fs_root(struct btrfs_root *root)
3513{
3514 iput(root->cache_inode);
3515 WARN_ON(!RB_EMPTY_ROOT(&root->inode_tree));
3516 btrfs_free_block_rsv(root, root->orphan_block_rsv);

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3650
3651 if (percpu_counter_sum(&fs_info->delalloc_bytes)) {
3652 btrfs_info(root->fs_info, "at unmount delalloc count %lld",
3653 percpu_counter_sum(&fs_info->delalloc_bytes));
3654 }
3655
3656 btrfs_sysfs_remove_one(fs_info);
3657
3517 free_fs_root(root);
3518}
3519
3520static void free_fs_root(struct btrfs_root *root)
3521{
3522 iput(root->cache_inode);
3523 WARN_ON(!RB_EMPTY_ROOT(&root->inode_tree));
3524 btrfs_free_block_rsv(root, root->orphan_block_rsv);

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3658
3659 if (percpu_counter_sum(&fs_info->delalloc_bytes)) {
3660 btrfs_info(root->fs_info, "at unmount delalloc count %lld",
3661 percpu_counter_sum(&fs_info->delalloc_bytes));
3662 }
3663
3664 btrfs_sysfs_remove_one(fs_info);
3665
3658 del_fs_roots(fs_info);
3666 btrfs_free_fs_roots(fs_info);
3659
3660 btrfs_put_block_group_cache(fs_info);
3661
3662 btrfs_free_block_groups(fs_info);
3663
3664 /*
3665 * we must make sure there is not any read request to
3666 * submit after we stopping all workers.

--- 499 unchanged lines hidden --- 		3667
3668 btrfs_put_block_group_cache(fs_info);
3669
3670 btrfs_free_block_groups(fs_info);
3671
3672 /*
3673 * we must make sure there is not any read request to
3674 * submit after we stopping all workers.

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