struct extent_map *em;
int ret;
- spin_lock(&em_tree->lock);
+ read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, start, len);
if (em) {
em->bdev =
BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev;
- spin_unlock(&em_tree->lock);
+ read_unlock(&em_tree->lock);
goto out;
}
- spin_unlock(&em_tree->lock);
+ read_unlock(&em_tree->lock);
em = alloc_extent_map(GFP_NOFS);
if (!em) {
em->block_start = 0;
em->bdev = BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev;
- spin_lock(&em_tree->lock);
+ write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em);
if (ret == -EEXIST) {
u64 failed_start = em->start;
free_extent_map(em);
em = NULL;
}
- spin_unlock(&em_tree->lock);
+ write_unlock(&em_tree->lock);
if (ret)
em = ERR_PTR(ret);
root->fs_info = fs_info;
root->objectid = objectid;
root->last_trans = 0;
- root->highest_inode = 0;
- root->last_inode_alloc = 0;
+ root->highest_objectid = 0;
root->name = NULL;
root->in_sysfs = 0;
root->inode_tree.rb_node = NULL;
struct btrfs_fs_info *fs_info = tree_root->fs_info;
struct btrfs_path *path;
struct extent_buffer *l;
- u64 highest_inode;
u64 generation;
u32 blocksize;
int ret = 0;
kfree(root);
return ERR_PTR(ret);
}
- goto insert;
+ goto out;
}
__setup_root(tree_root->nodesize, tree_root->leafsize,
path = btrfs_alloc_path();
BUG_ON(!path);
ret = btrfs_search_slot(NULL, tree_root, location, path, 0, 0);
- if (ret != 0) {
- if (ret > 0)
- ret = -ENOENT;
- goto out;
+ if (ret == 0) {
+ l = path->nodes[0];
+ read_extent_buffer(l, &root->root_item,
+ btrfs_item_ptr_offset(l, path->slots[0]),
+ sizeof(root->root_item));
+ memcpy(&root->root_key, location, sizeof(*location));
}
- l = path->nodes[0];
- read_extent_buffer(l, &root->root_item,
- btrfs_item_ptr_offset(l, path->slots[0]),
- sizeof(root->root_item));
- memcpy(&root->root_key, location, sizeof(*location));
- ret = 0;
-out:
- btrfs_release_path(root, path);
btrfs_free_path(path);
if (ret) {
- kfree(root);
+ if (ret > 0)
+ ret = -ENOENT;
return ERR_PTR(ret);
}
+
generation = btrfs_root_generation(&root->root_item);
blocksize = btrfs_level_size(root, btrfs_root_level(&root->root_item));
root->node = read_tree_block(root, btrfs_root_bytenr(&root->root_item),
blocksize, generation);
root->commit_root = btrfs_root_node(root);
BUG_ON(!root->node);
-insert:
- if (location->objectid != BTRFS_TREE_LOG_OBJECTID) {
+out:
+ if (location->objectid != BTRFS_TREE_LOG_OBJECTID)
root->ref_cows = 1;
- ret = btrfs_find_highest_inode(root, &highest_inode);
- if (ret == 0) {
- root->highest_inode = highest_inode;
- root->last_inode_alloc = highest_inode;
- }
- }
+
return root;
}
offset = page_offset(page);
em_tree = &BTRFS_I(inode)->extent_tree;
- spin_lock(&em_tree->lock);
+ read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, offset, PAGE_CACHE_SIZE);
- spin_unlock(&em_tree->lock);
+ read_unlock(&em_tree->lock);
if (!em) {
__unplug_io_fn(bdi, page);
return;
INIT_LIST_HEAD(&fs_info->hashers);
INIT_LIST_HEAD(&fs_info->delalloc_inodes);
INIT_LIST_HEAD(&fs_info->ordered_operations);
+ INIT_LIST_HEAD(&fs_info->caching_block_groups);
spin_lock_init(&fs_info->delalloc_lock);
spin_lock_init(&fs_info->new_trans_lock);
spin_lock_init(&fs_info->ref_cache_lock);
spin_lock_init(&fs_info->block_group_cache_lock);
fs_info->block_group_cache_tree.rb_node = NULL;
- extent_io_tree_init(&fs_info->pinned_extents,
+ extent_io_tree_init(&fs_info->freed_extents[0],
+ fs_info->btree_inode->i_mapping, GFP_NOFS);
+ extent_io_tree_init(&fs_info->freed_extents[1],
fs_info->btree_inode->i_mapping, GFP_NOFS);
+ fs_info->pinned_extents = &fs_info->freed_extents[0];
fs_info->do_barriers = 1;
BTRFS_I(fs_info->btree_inode)->root = tree_root;
mutex_init(&fs_info->cleaner_mutex);
mutex_init(&fs_info->volume_mutex);
mutex_init(&fs_info->tree_reloc_mutex);
+ init_rwsem(&fs_info->extent_commit_sem);
btrfs_init_free_cluster(&fs_info->meta_alloc_cluster);
btrfs_init_free_cluster(&fs_info->data_alloc_cluster);
err = -EINVAL;
goto fail_iput;
}
-
+printk("thread pool is %d\n", fs_info->thread_pool_size);
/*
* we need to start all the end_io workers up front because the
* queue work function gets called at interrupt time, and so it
fs_info->endio_workers.idle_thresh = 4;
fs_info->endio_meta_workers.idle_thresh = 4;
- fs_info->endio_write_workers.idle_thresh = 64;
- fs_info->endio_meta_write_workers.idle_thresh = 64;
+ fs_info->endio_write_workers.idle_thresh = 2;
+ fs_info->endio_meta_write_workers.idle_thresh = 2;
+
+ fs_info->endio_workers.atomic_worker_start = 1;
+ fs_info->endio_meta_workers.atomic_worker_start = 1;
+ fs_info->endio_write_workers.atomic_worker_start = 1;
+ fs_info->endio_meta_write_workers.atomic_worker_start = 1;
btrfs_start_workers(&fs_info->workers, 1);
btrfs_start_workers(&fs_info->submit_workers, 1);
btrfs_start_workers(&fs_info->delalloc_workers, 1);
btrfs_start_workers(&fs_info->fixup_workers, 1);
- btrfs_start_workers(&fs_info->endio_workers, fs_info->thread_pool_size);
- btrfs_start_workers(&fs_info->endio_meta_workers,
- fs_info->thread_pool_size);
- btrfs_start_workers(&fs_info->endio_meta_write_workers,
- fs_info->thread_pool_size);
- btrfs_start_workers(&fs_info->endio_write_workers,
- fs_info->thread_pool_size);
+ btrfs_start_workers(&fs_info->endio_workers, 1);
+ btrfs_start_workers(&fs_info->endio_meta_workers, 1);
+ btrfs_start_workers(&fs_info->endio_meta_write_workers, 1);
+ btrfs_start_workers(&fs_info->endio_write_workers, 1);
fs_info->bdi.ra_pages *= btrfs_super_num_devices(disk_super);
fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages,
btrfs_super_chunk_root(disk_super),
blocksize, generation);
BUG_ON(!chunk_root->node);
+ if (!test_bit(EXTENT_BUFFER_UPTODATE, &chunk_root->node->bflags)) {
+ printk(KERN_WARNING "btrfs: failed to read chunk root on %s\n",
+ sb->s_id);
+ goto fail_chunk_root;
+ }
btrfs_set_root_node(&chunk_root->root_item, chunk_root->node);
chunk_root->commit_root = btrfs_root_node(chunk_root);
blocksize, generation);
if (!tree_root->node)
goto fail_chunk_root;
+ if (!test_bit(EXTENT_BUFFER_UPTODATE, &tree_root->node->bflags)) {
+ printk(KERN_WARNING "btrfs: failed to read tree root on %s\n",
+ sb->s_id);
+ goto fail_tree_root;
+ }
btrfs_set_root_node(&tree_root->root_item, tree_root->node);
tree_root->commit_root = btrfs_root_node(tree_root);
printk(KERN_ERR "btrfs: commit super ret %d\n", ret);
}
+ fs_info->closing = 2;
+ smp_mb();
+
if (fs_info->delalloc_bytes) {
printk(KERN_INFO "btrfs: at unmount delalloc count %llu\n",
(unsigned long long)fs_info->delalloc_bytes);