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btrfs-progs: block-group: add dirty_bgs list related memebers 

The old style uses extent bit BLOCK_GROUP_DIRTY to mark dirty block
groups in extent cache. To replace it, add btrfs_trans_handle::dirty_bgs
and btrfs_block_group_cache::dirty_list.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Su Yue <Damenly_Su@gmx.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Su Yue 2019-12-18 13:18:46 +08:00 committed by David Sterba
parent 1d489df8f8
commit a0edc6859e
4 changed files with 10 additions and 1 deletions
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3
ctree.h
View File

@ -1123,6 +1123,9 @@ struct btrfs_block_group_cache {
/* Block group cache stuff */
struct rb_node cache_node;
/* For dirty block groups */
struct list_head dirty_list;
};
struct btrfs_device;

4
extent-tree.c
View File

@ -2814,6 +2814,8 @@ static int read_one_block_group(struct btrfs_fs_info *fs_info,
cache->pinned = 0;
cache->flags = btrfs_block_group_flags(&bgi);
cache->used = btrfs_block_group_used(&bgi);
INIT_LIST_HEAD(&cache->dirty_list);
if (cache->flags & BTRFS_BLOCK_GROUP_DATA) {
bit = BLOCK_GROUP_DATA;
} else if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM) {
@ -2900,6 +2902,7 @@ btrfs_add_block_group(struct btrfs_fs_info *fs_info, u64 bytes_used, u64 type,
cache->key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
cache->used = bytes_used;
cache->flags = type;
INIT_LIST_HEAD(&cache->dirty_list);
exclude_super_stripes(fs_info, cache);
ret = update_space_info(fs_info, cache->flags, size, bytes_used,
@ -2997,6 +3000,7 @@ int btrfs_make_block_groups(struct btrfs_trans_handle *trans,
cache->key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
cache->used = 0;
cache->flags = group_type;
INIT_LIST_HEAD(&cache->dirty_list);
ret = update_space_info(fs_info, group_type, group_size,
0, &cache->space_info);

1
transaction.c
View File

@ -52,6 +52,7 @@ struct btrfs_trans_handle* btrfs_start_transaction(struct btrfs_root *root,
root->last_trans = h->transid;
root->commit_root = root->node;
extent_buffer_get(root->node);
INIT_LIST_HEAD(&h->dirty_bgs);
return h;
}

3
transaction.h
View File

@ -22,6 +22,7 @@
#include "kerncompat.h"
#include "ctree.h"
#include "delayed-ref.h"
#include "kernel-lib/list.h"
struct btrfs_trans_handle {
struct btrfs_fs_info *fs_info;
@ -35,7 +36,7 @@ struct btrfs_trans_handle {
unsigned long blocks_used;
struct btrfs_block_group_cache *block_group;
struct btrfs_delayed_ref_root delayed_refs;
struct list_head dirty_bgs;
};
struct btrfs_trans_handle* btrfs_start_transaction(struct btrfs_root *root,