765 lines
21 KiB
C
765 lines
21 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#define _XOPEN_SOURCE 600
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#define __USE_XOPEN2K
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#define _GNU_SOURCE 1
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "kerncompat.h"
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#include "radix-tree.h"
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#include "ctree.h"
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#include "disk-io.h"
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#include "volumes.h"
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#include "transaction.h"
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#include "crc32c.h"
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#include "utils.h"
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#include "print-tree.h"
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static int check_tree_block(struct btrfs_root *root, struct extent_buffer *buf)
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{
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if (buf->start != btrfs_header_bytenr(buf))
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return 1;
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if (memcmp_extent_buffer(buf, root->fs_info->fsid,
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(unsigned long)btrfs_header_fsid(buf),
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BTRFS_FSID_SIZE))
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return 1;
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return 0;
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}
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u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len)
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{
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return crc32c(seed, data, len);
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}
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void btrfs_csum_final(u32 crc, char *result)
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{
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*(__le32 *)result = ~cpu_to_le32(crc);
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}
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int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
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int verify)
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{
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char result[BTRFS_CRC32_SIZE];
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u32 len;
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u32 crc = ~(u32)0;
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len = buf->len - BTRFS_CSUM_SIZE;
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crc = crc32c(crc, buf->data + BTRFS_CSUM_SIZE, len);
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btrfs_csum_final(crc, result);
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if (verify) {
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if (memcmp_extent_buffer(buf, result, 0, BTRFS_CRC32_SIZE)) {
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printk("checksum verify failed on %llu wanted %X "
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"found %X\n", (unsigned long long)buf->start,
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*((int *)result), *((int *)buf));
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return 1;
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}
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} else {
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write_extent_buffer(buf, result, 0, BTRFS_CRC32_SIZE);
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}
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return 0;
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}
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struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
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u64 bytenr, u32 blocksize)
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{
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return find_extent_buffer(&root->fs_info->extent_cache,
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bytenr, blocksize);
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}
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struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
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u64 bytenr, u32 blocksize)
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{
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return alloc_extent_buffer(&root->fs_info->extent_cache, bytenr,
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blocksize);
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}
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int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize)
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{
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int ret;
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int dev_nr;
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struct extent_buffer *eb;
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u64 length;
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struct btrfs_multi_bio *multi = NULL;
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struct btrfs_device *device;
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eb = btrfs_find_tree_block(root, bytenr, blocksize);
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if (eb && btrfs_buffer_uptodate(eb)) {
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free_extent_buffer(eb);
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return 0;
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}
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dev_nr = 0;
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length = blocksize;
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ret = btrfs_map_block(&root->fs_info->mapping_tree, READ,
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bytenr, &length, &multi, 0);
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BUG_ON(ret);
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device = multi->stripes[0].dev;
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device->total_ios++;
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blocksize = min(blocksize, (u32)(64 * 1024));
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readahead(device->fd, multi->stripes[0].physical, blocksize);
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kfree(multi);
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return 0;
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}
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struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
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u32 blocksize)
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{
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int ret;
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int dev_nr;
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struct extent_buffer *eb;
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u64 length;
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struct btrfs_multi_bio *multi = NULL;
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struct btrfs_device *device;
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int mirror_num = 0;
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int num_copies;
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eb = btrfs_find_create_tree_block(root, bytenr, blocksize);
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if (!eb)
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return NULL;
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if (btrfs_buffer_uptodate(eb))
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return eb;
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dev_nr = 0;
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length = blocksize;
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while (1) {
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ret = btrfs_map_block(&root->fs_info->mapping_tree, READ,
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eb->start, &length, &multi, mirror_num);
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BUG_ON(ret);
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device = multi->stripes[0].dev;
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eb->fd = device->fd;
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device->total_ios++;
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eb->dev_bytenr = multi->stripes[0].physical;
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kfree(multi);
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ret = read_extent_from_disk(eb);
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if (ret == 0 && check_tree_block(root, eb) == 0 &&
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csum_tree_block(root, eb, 1) == 0) {
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btrfs_set_buffer_uptodate(eb);
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return eb;
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}
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num_copies = btrfs_num_copies(&root->fs_info->mapping_tree,
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eb->start, eb->len);
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if (num_copies == 1) {
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printk("reading %Lu failed only one copy\n", eb->start);
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break;
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}
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mirror_num++;
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if (mirror_num > num_copies) {
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printk("bailing at mirror %d of %d\n", mirror_num, num_copies);
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break;
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}
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}
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free_extent_buffer(eb);
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return NULL;
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}
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int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
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struct extent_buffer *eb)
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{
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int ret;
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int dev_nr;
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u64 length;
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struct btrfs_multi_bio *multi = NULL;
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if (check_tree_block(root, eb))
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BUG();
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if (!btrfs_buffer_uptodate(eb))
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BUG();
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btrfs_set_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN);
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csum_tree_block(root, eb, 0);
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dev_nr = 0;
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length = eb->len;
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ret = btrfs_map_block(&root->fs_info->mapping_tree, WRITE,
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eb->start, &length, &multi, 0);
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while(dev_nr < multi->num_stripes) {
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BUG_ON(ret);
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eb->fd = multi->stripes[dev_nr].dev->fd;
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eb->dev_bytenr = multi->stripes[dev_nr].physical;
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multi->stripes[dev_nr].dev->total_ios++;
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dev_nr++;
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ret = write_extent_to_disk(eb);
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BUG_ON(ret);
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}
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kfree(multi);
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return 0;
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}
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static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
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u32 stripesize, struct btrfs_root *root,
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struct btrfs_fs_info *fs_info, u64 objectid)
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{
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root->node = NULL;
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root->commit_root = NULL;
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root->sectorsize = sectorsize;
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root->nodesize = nodesize;
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root->leafsize = leafsize;
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root->stripesize = stripesize;
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root->ref_cows = 0;
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root->track_dirty = 0;
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root->fs_info = fs_info;
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root->objectid = objectid;
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root->last_trans = 0;
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root->highest_inode = 0;
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root->last_inode_alloc = 0;
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INIT_LIST_HEAD(&root->dirty_list);
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memset(&root->root_key, 0, sizeof(root->root_key));
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memset(&root->root_item, 0, sizeof(root->root_item));
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root->root_key.objectid = objectid;
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return 0;
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}
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static int update_cowonly_root(struct btrfs_trans_handle *trans,
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struct btrfs_root *root)
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{
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int ret;
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u64 old_root_bytenr;
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struct btrfs_root *tree_root = root->fs_info->tree_root;
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btrfs_write_dirty_block_groups(trans, root);
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while(1) {
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old_root_bytenr = btrfs_root_bytenr(&root->root_item);
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if (old_root_bytenr == root->node->start)
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break;
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btrfs_set_root_bytenr(&root->root_item,
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root->node->start);
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root->root_item.level = btrfs_header_level(root->node);
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ret = btrfs_update_root(trans, tree_root,
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&root->root_key,
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&root->root_item);
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BUG_ON(ret);
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btrfs_write_dirty_block_groups(trans, root);
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}
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return 0;
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}
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static int commit_tree_roots(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info)
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{
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struct btrfs_root *root;
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struct list_head *next;
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while(!list_empty(&fs_info->dirty_cowonly_roots)) {
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next = fs_info->dirty_cowonly_roots.next;
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list_del_init(next);
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root = list_entry(next, struct btrfs_root, dirty_list);
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update_cowonly_root(trans, root);
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}
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return 0;
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}
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static int __commit_transaction(struct btrfs_trans_handle *trans,
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struct btrfs_root *root)
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{
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u64 start;
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u64 end;
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struct extent_buffer *eb;
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struct extent_io_tree *tree = &root->fs_info->extent_cache;
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int ret;
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while(1) {
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ret = find_first_extent_bit(tree, 0, &start, &end,
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EXTENT_DIRTY);
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if (ret)
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break;
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while(start <= end) {
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eb = find_first_extent_buffer(tree, start);
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BUG_ON(!eb || eb->start != start);
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ret = write_tree_block(trans, root, eb);
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BUG_ON(ret);
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start += eb->len;
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clear_extent_buffer_dirty(eb);
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free_extent_buffer(eb);
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}
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}
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return 0;
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}
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int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
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struct btrfs_root *root)
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{
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int ret = 0;
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struct btrfs_root *new_root = NULL;
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struct btrfs_fs_info *fs_info = root->fs_info;
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if (root->commit_root == root->node)
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goto commit_tree;
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new_root = malloc(sizeof(*new_root));
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if (!new_root)
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return -ENOMEM;
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memcpy(new_root, root, sizeof(*new_root));
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new_root->node = root->commit_root;
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root->commit_root = NULL;
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root->root_key.offset = trans->transid;
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btrfs_set_root_bytenr(&root->root_item, root->node->start);
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root->root_item.level = btrfs_header_level(root->node);
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ret = btrfs_insert_root(trans, fs_info->tree_root,
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&root->root_key, &root->root_item);
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BUG_ON(ret);
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btrfs_set_root_refs(&new_root->root_item, 0);
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ret = btrfs_update_root(trans, root->fs_info->tree_root,
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&new_root->root_key, &new_root->root_item);
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BUG_ON(ret);
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ret = commit_tree_roots(trans, fs_info);
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BUG_ON(ret);
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ret = __commit_transaction(trans, root);
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BUG_ON(ret);
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write_ctree_super(trans, root);
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btrfs_finish_extent_commit(trans, fs_info->extent_root,
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&fs_info->pinned_extents);
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btrfs_free_transaction(root, trans);
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fs_info->running_transaction = NULL;
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trans = btrfs_start_transaction(root, 1);
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ret = btrfs_drop_snapshot(trans, new_root);
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BUG_ON(ret);
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ret = btrfs_del_root(trans, fs_info->tree_root, &new_root->root_key);
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BUG_ON(ret);
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commit_tree:
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ret = commit_tree_roots(trans, fs_info);
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BUG_ON(ret);
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ret = __commit_transaction(trans, root);
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BUG_ON(ret);
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write_ctree_super(trans, root);
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btrfs_finish_extent_commit(trans, fs_info->extent_root,
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&fs_info->pinned_extents);
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btrfs_free_transaction(root, trans);
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free_extent_buffer(root->commit_root);
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root->commit_root = NULL;
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fs_info->running_transaction = NULL;
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if (new_root) {
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free_extent_buffer(new_root->node);
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free(new_root);
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}
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return 0;
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}
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static int find_and_setup_root(struct btrfs_root *tree_root,
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struct btrfs_fs_info *fs_info,
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u64 objectid, struct btrfs_root *root)
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{
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int ret;
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u32 blocksize;
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__setup_root(tree_root->nodesize, tree_root->leafsize,
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tree_root->sectorsize, tree_root->stripesize,
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root, fs_info, objectid);
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ret = btrfs_find_last_root(tree_root, objectid,
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&root->root_item, &root->root_key);
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BUG_ON(ret);
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blocksize = btrfs_level_size(root, btrfs_root_level(&root->root_item));
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root->node = read_tree_block(root, btrfs_root_bytenr(&root->root_item),
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blocksize);
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BUG_ON(!root->node);
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return 0;
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}
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int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
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{
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if (root->node)
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free_extent_buffer(root->node);
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if (root->commit_root)
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free_extent_buffer(root->commit_root);
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free(root);
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return 0;
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}
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struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
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struct btrfs_key *location)
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{
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struct btrfs_root *root;
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struct btrfs_root *tree_root = fs_info->tree_root;
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struct btrfs_path *path;
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struct extent_buffer *l;
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u32 blocksize;
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int ret = 0;
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root = malloc(sizeof(*root));
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if (!root)
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return ERR_PTR(-ENOMEM);
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memset(root, 0, sizeof(*root));
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if (location->offset == (u64)-1) {
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ret = find_and_setup_root(tree_root, fs_info,
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location->objectid, root);
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if (ret) {
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free(root);
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return ERR_PTR(ret);
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}
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goto insert;
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}
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__setup_root(tree_root->nodesize, tree_root->leafsize,
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tree_root->sectorsize, tree_root->stripesize,
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root, fs_info, location->objectid);
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path = btrfs_alloc_path();
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BUG_ON(!path);
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ret = btrfs_search_slot(NULL, tree_root, location, path, 0, 0);
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if (ret != 0) {
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if (ret > 0)
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ret = -ENOENT;
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goto out;
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}
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l = path->nodes[0];
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read_extent_buffer(l, &root->root_item,
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btrfs_item_ptr_offset(l, path->slots[0]),
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sizeof(root->root_item));
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memcpy(&root->root_key, location, sizeof(*location));
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ret = 0;
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out:
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btrfs_release_path(root, path);
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btrfs_free_path(path);
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if (ret) {
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free(root);
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return ERR_PTR(ret);
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}
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blocksize = btrfs_level_size(root, btrfs_root_level(&root->root_item));
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root->node = read_tree_block(root, btrfs_root_bytenr(&root->root_item),
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blocksize);
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BUG_ON(!root->node);
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insert:
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root->ref_cows = 1;
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return root;
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}
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struct btrfs_root *open_ctree(const char *filename, u64 sb_bytenr)
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{
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int fp;
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fp = open(filename, O_CREAT | O_RDWR, 0600);
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if (fp < 0) {
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return NULL;
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}
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return open_ctree_fd(fp, filename, sb_bytenr);
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}
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struct btrfs_root *open_ctree_fd(int fp, const char *path, u64 sb_bytenr)
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{
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u32 sectorsize;
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u32 nodesize;
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u32 leafsize;
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u32 blocksize;
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u32 stripesize;
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struct btrfs_root *root = malloc(sizeof(struct btrfs_root));
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struct btrfs_root *tree_root = malloc(sizeof(struct btrfs_root));
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struct btrfs_root *extent_root = malloc(sizeof(struct btrfs_root));
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struct btrfs_root *chunk_root = malloc(sizeof(struct btrfs_root));
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struct btrfs_root *dev_root = malloc(sizeof(struct btrfs_root));
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struct btrfs_fs_info *fs_info = malloc(sizeof(*fs_info));
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int ret;
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struct btrfs_super_block *disk_super;
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struct btrfs_fs_devices *fs_devices = NULL;
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u64 total_devs;
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if (sb_bytenr == 0)
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sb_bytenr = BTRFS_SUPER_INFO_OFFSET;
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ret = btrfs_scan_one_device(fp, path, &fs_devices,
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&total_devs, sb_bytenr);
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if (ret) {
|
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fprintf(stderr, "No valid Btrfs found on %s\n", path);
|
|
return NULL;
|
|
}
|
|
fprintf(stderr, "found Btrfs on %s with %lu devices\n", path,
|
|
(unsigned long)total_devs);
|
|
|
|
if (total_devs != 1) {
|
|
ret = btrfs_scan_for_fsid(fs_devices, total_devs, 1);
|
|
BUG_ON(ret);
|
|
}
|
|
|
|
memset(fs_info, 0, sizeof(*fs_info));
|
|
fs_info->fp = fs_devices->lowest_bdev;
|
|
fs_info->fs_root = root;
|
|
fs_info->tree_root = tree_root;
|
|
fs_info->extent_root = extent_root;
|
|
fs_info->chunk_root = chunk_root;
|
|
fs_info->dev_root = dev_root;
|
|
|
|
extent_io_tree_init(&fs_info->extent_cache);
|
|
extent_io_tree_init(&fs_info->free_space_cache);
|
|
extent_io_tree_init(&fs_info->block_group_cache);
|
|
extent_io_tree_init(&fs_info->pinned_extents);
|
|
extent_io_tree_init(&fs_info->pending_del);
|
|
extent_io_tree_init(&fs_info->extent_ins);
|
|
|
|
cache_tree_init(&fs_info->mapping_tree.cache_tree);
|
|
|
|
mutex_init(&fs_info->fs_mutex);
|
|
fs_info->fs_devices = fs_devices;
|
|
INIT_LIST_HEAD(&fs_info->dirty_cowonly_roots);
|
|
INIT_LIST_HEAD(&fs_info->space_info);
|
|
|
|
__setup_root(4096, 4096, 4096, 4096, tree_root,
|
|
fs_info, BTRFS_ROOT_TREE_OBJECTID);
|
|
|
|
ret = btrfs_open_devices(fs_devices, O_RDWR);
|
|
BUG_ON(ret);
|
|
|
|
ret = btrfs_bootstrap_super_map(&fs_info->mapping_tree, fs_devices);
|
|
BUG_ON(ret);
|
|
fs_info->sb_buffer = btrfs_find_create_tree_block(tree_root, sb_bytenr,
|
|
4096);
|
|
BUG_ON(!fs_info->sb_buffer);
|
|
fs_info->sb_buffer->fd = fs_devices->latest_bdev;
|
|
fs_info->sb_buffer->dev_bytenr = sb_bytenr;
|
|
ret = read_extent_from_disk(fs_info->sb_buffer);
|
|
BUG_ON(ret);
|
|
btrfs_set_buffer_uptodate(fs_info->sb_buffer);
|
|
|
|
read_extent_buffer(fs_info->sb_buffer, &fs_info->super_copy, 0,
|
|
sizeof(fs_info->super_copy));
|
|
read_extent_buffer(fs_info->sb_buffer, fs_info->fsid,
|
|
(unsigned long)btrfs_super_fsid(fs_info->sb_buffer),
|
|
BTRFS_FSID_SIZE);
|
|
|
|
disk_super = &fs_info->super_copy;
|
|
if (strncmp((char *)(&disk_super->magic), BTRFS_MAGIC,
|
|
sizeof(disk_super->magic))) {
|
|
printk("No valid btrfs found\n");
|
|
BUG_ON(1);
|
|
}
|
|
nodesize = btrfs_super_nodesize(disk_super);
|
|
leafsize = btrfs_super_leafsize(disk_super);
|
|
sectorsize = btrfs_super_sectorsize(disk_super);
|
|
stripesize = btrfs_super_stripesize(disk_super);
|
|
tree_root->nodesize = nodesize;
|
|
tree_root->leafsize = leafsize;
|
|
tree_root->sectorsize = sectorsize;
|
|
tree_root->stripesize = stripesize;
|
|
|
|
ret = btrfs_read_super_device(tree_root, fs_info->sb_buffer);
|
|
BUG_ON(ret);
|
|
ret = btrfs_read_sys_array(tree_root);
|
|
BUG_ON(ret);
|
|
blocksize = btrfs_level_size(tree_root,
|
|
btrfs_super_chunk_root_level(disk_super));
|
|
|
|
__setup_root(nodesize, leafsize, sectorsize, stripesize,
|
|
chunk_root, fs_info, BTRFS_CHUNK_TREE_OBJECTID);
|
|
|
|
chunk_root->node = read_tree_block(chunk_root,
|
|
btrfs_super_chunk_root(disk_super),
|
|
blocksize);
|
|
|
|
BUG_ON(!chunk_root->node);
|
|
|
|
ret = btrfs_read_chunk_tree(chunk_root);
|
|
BUG_ON(ret);
|
|
|
|
blocksize = btrfs_level_size(tree_root,
|
|
btrfs_super_root_level(disk_super));
|
|
|
|
tree_root->node = read_tree_block(tree_root,
|
|
btrfs_super_root(disk_super),
|
|
blocksize);
|
|
BUG_ON(!tree_root->node);
|
|
ret = find_and_setup_root(tree_root, fs_info,
|
|
BTRFS_EXTENT_TREE_OBJECTID, extent_root);
|
|
BUG_ON(ret);
|
|
extent_root->track_dirty = 1;
|
|
|
|
ret = find_and_setup_root(tree_root, fs_info,
|
|
BTRFS_DEV_TREE_OBJECTID, dev_root);
|
|
BUG_ON(ret);
|
|
dev_root->track_dirty = 1;
|
|
|
|
ret = find_and_setup_root(tree_root, fs_info,
|
|
BTRFS_FS_TREE_OBJECTID, root);
|
|
BUG_ON(ret);
|
|
root->ref_cows = 1;
|
|
fs_info->generation = btrfs_super_generation(disk_super) + 1;
|
|
btrfs_read_block_groups(root);
|
|
|
|
fs_info->data_alloc_profile = (u64)-1;
|
|
fs_info->metadata_alloc_profile = (u64)-1;
|
|
fs_info->system_alloc_profile = fs_info->metadata_alloc_profile;
|
|
|
|
return root;
|
|
}
|
|
|
|
int write_all_supers(struct btrfs_root *root)
|
|
{
|
|
struct list_head *cur;
|
|
struct list_head *head = &root->fs_info->fs_devices->devices;
|
|
struct btrfs_device *dev;
|
|
struct extent_buffer *sb;
|
|
struct btrfs_dev_item *dev_item;
|
|
int ret;
|
|
|
|
sb = root->fs_info->sb_buffer;
|
|
dev_item = (struct btrfs_dev_item *)offsetof(struct btrfs_super_block,
|
|
dev_item);
|
|
list_for_each(cur, head) {
|
|
dev = list_entry(cur, struct btrfs_device, dev_list);
|
|
btrfs_set_device_type(sb, dev_item, dev->type);
|
|
btrfs_set_device_id(sb, dev_item, dev->devid);
|
|
btrfs_set_device_total_bytes(sb, dev_item, dev->total_bytes);
|
|
btrfs_set_device_bytes_used(sb, dev_item, dev->bytes_used);
|
|
btrfs_set_device_io_align(sb, dev_item, dev->io_align);
|
|
btrfs_set_device_io_width(sb, dev_item, dev->io_width);
|
|
btrfs_set_device_sector_size(sb, dev_item, dev->sector_size);
|
|
write_extent_buffer(sb, dev->uuid,
|
|
(unsigned long)btrfs_device_uuid(dev_item),
|
|
BTRFS_DEV_UUID_SIZE);
|
|
sb->fd = dev->fd;
|
|
sb->dev_bytenr = BTRFS_SUPER_INFO_OFFSET;
|
|
btrfs_set_header_flag(sb, BTRFS_HEADER_FLAG_WRITTEN);
|
|
csum_tree_block(root, sb, 0);
|
|
ret = write_extent_to_disk(sb);
|
|
BUG_ON(ret);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int write_ctree_super(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root)
|
|
{
|
|
int ret;
|
|
struct btrfs_root *tree_root = root->fs_info->tree_root;
|
|
struct btrfs_root *chunk_root = root->fs_info->chunk_root;
|
|
btrfs_set_super_generation(&root->fs_info->super_copy,
|
|
trans->transid);
|
|
btrfs_set_super_root(&root->fs_info->super_copy,
|
|
tree_root->node->start);
|
|
btrfs_set_super_root_level(&root->fs_info->super_copy,
|
|
btrfs_header_level(tree_root->node));
|
|
btrfs_set_super_chunk_root(&root->fs_info->super_copy,
|
|
chunk_root->node->start);
|
|
btrfs_set_super_chunk_root_level(&root->fs_info->super_copy,
|
|
btrfs_header_level(chunk_root->node));
|
|
write_extent_buffer(root->fs_info->sb_buffer,
|
|
&root->fs_info->super_copy, 0,
|
|
sizeof(root->fs_info->super_copy));
|
|
ret = write_all_supers(root);
|
|
if (ret)
|
|
fprintf(stderr, "failed to write new super block err %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int close_all_devices(struct btrfs_fs_info *fs_info)
|
|
{
|
|
struct list_head *list;
|
|
struct list_head *next;
|
|
struct btrfs_device *device;
|
|
|
|
return 0;
|
|
|
|
list = &fs_info->fs_devices->devices;
|
|
list_for_each(next, list) {
|
|
device = list_entry(next, struct btrfs_device, dev_list);
|
|
// close(device->fd);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int close_ctree(struct btrfs_root *root)
|
|
{
|
|
int ret;
|
|
struct btrfs_trans_handle *trans;
|
|
struct btrfs_fs_info *fs_info = root->fs_info;
|
|
|
|
trans = btrfs_start_transaction(root, 1);
|
|
btrfs_commit_transaction(trans, root);
|
|
trans = btrfs_start_transaction(root, 1);
|
|
ret = commit_tree_roots(trans, root->fs_info);
|
|
BUG_ON(ret);
|
|
ret = __commit_transaction(trans, root);
|
|
BUG_ON(ret);
|
|
write_ctree_super(trans, root);
|
|
btrfs_free_transaction(root, trans);
|
|
btrfs_free_block_groups(root->fs_info);
|
|
close(root->fs_info->fp);
|
|
if (root->node)
|
|
free_extent_buffer(root->node);
|
|
if (root->fs_info->extent_root->node)
|
|
free_extent_buffer(root->fs_info->extent_root->node);
|
|
if (root->fs_info->tree_root->node)
|
|
free_extent_buffer(root->fs_info->tree_root->node);
|
|
free_extent_buffer(root->commit_root);
|
|
free_extent_buffer(root->fs_info->sb_buffer);
|
|
|
|
if (root->fs_info->chunk_root->node);
|
|
free_extent_buffer(root->fs_info->chunk_root->node);
|
|
|
|
if (root->fs_info->dev_root->node);
|
|
free_extent_buffer(root->fs_info->dev_root->node);
|
|
|
|
close_all_devices(root->fs_info);
|
|
extent_io_tree_cleanup(&fs_info->extent_cache);
|
|
extent_io_tree_cleanup(&fs_info->free_space_cache);
|
|
extent_io_tree_cleanup(&fs_info->block_group_cache);
|
|
extent_io_tree_cleanup(&fs_info->pinned_extents);
|
|
extent_io_tree_cleanup(&fs_info->pending_del);
|
|
extent_io_tree_cleanup(&fs_info->extent_ins);
|
|
|
|
free(fs_info->tree_root);
|
|
free(fs_info->extent_root);
|
|
free(fs_info->fs_root);
|
|
free(fs_info->chunk_root);
|
|
free(fs_info->dev_root);
|
|
free(fs_info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
|
|
struct extent_buffer *eb)
|
|
{
|
|
return clear_extent_buffer_dirty(eb);
|
|
}
|
|
|
|
int wait_on_tree_block_writeback(struct btrfs_root *root,
|
|
struct extent_buffer *eb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void btrfs_mark_buffer_dirty(struct extent_buffer *eb)
|
|
{
|
|
set_extent_buffer_dirty(eb);
|
|
}
|
|
|
|
int btrfs_buffer_uptodate(struct extent_buffer *eb)
|
|
{
|
|
return extent_buffer_uptodate(eb);
|
|
}
|
|
|
|
int btrfs_set_buffer_uptodate(struct extent_buffer *eb)
|
|
{
|
|
return set_extent_buffer_uptodate(eb);
|
|
}
|