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btrfs: convert btrfs_block_group::needs_free_space to runtime flag

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We already have flags in block group to track various status bits,
convert needs_free_space as well and reduce size of btrfs_block_group.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2022-10-31 20:33:44 +01:00
parent fd463ac461
commit 0d7764ff58
4 changed files with 9 additions and 13 deletions
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2
fs/btrfs/block-group.c
View File

@ -2553,7 +2553,7 @@ struct btrfs_block_group *btrfs_make_block_group(struct btrfs_trans_handle *tran
cache->global_root_id = calculate_global_root_id(fs_info, cache->start);
if (btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE))
cache->needs_free_space = 1;
set_bit(BLOCK_GROUP_FLAG_NEEDS_FREE_SPACE, &cache->runtime_flags);
ret = btrfs_load_block_group_zone_info(cache, true);
if (ret) {

8
fs/btrfs/block-group.h
View File

@ -55,6 +55,8 @@ enum btrfs_block_group_flags {
BLOCK_GROUP_FLAG_CHUNK_ITEM_INSERTED,
BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE,
BLOCK_GROUP_FLAG_ZONED_DATA_RELOC,
/* Does the block group need to be added to the free space tree? */
BLOCK_GROUP_FLAG_NEEDS_FREE_SPACE,
};
enum btrfs_caching_type {
@ -208,12 +210,6 @@ struct btrfs_block_group {
/* Lock for free space tree operations. */
struct mutex free_space_lock;
/*
* Does the block group need to be added to the free space tree?
* Protected by free_space_lock.
*/
int needs_free_space;
/* Flag indicating this block group is placed on a sequential zone */
bool seq_zone;

10
fs/btrfs/free-space-tree.c
View File

@ -808,7 +808,7 @@ int __remove_from_free_space_tree(struct btrfs_trans_handle *trans,
u32 flags;
int ret;
if (block_group->needs_free_space) {
if (test_bit(BLOCK_GROUP_FLAG_NEEDS_FREE_SPACE, &block_group->runtime_flags)) {
ret = __add_block_group_free_space(trans, block_group, path);
if (ret)
return ret;
@ -1001,7 +1001,7 @@ int __add_to_free_space_tree(struct btrfs_trans_handle *trans,
u32 flags;
int ret;
if (block_group->needs_free_space) {
if (test_bit(BLOCK_GROUP_FLAG_NEEDS_FREE_SPACE, &block_group->runtime_flags)) {
ret = __add_block_group_free_space(trans, block_group, path);
if (ret)
return ret;
@ -1304,7 +1304,7 @@ static int __add_block_group_free_space(struct btrfs_trans_handle *trans,
{
int ret;
block_group->needs_free_space = 0;
clear_bit(BLOCK_GROUP_FLAG_NEEDS_FREE_SPACE, &block_group->runtime_flags);
ret = add_new_free_space_info(trans, block_group, path);
if (ret)
@ -1326,7 +1326,7 @@ int add_block_group_free_space(struct btrfs_trans_handle *trans,
return 0;
mutex_lock(&block_group->free_space_lock);
if (!block_group->needs_free_space)
if (!test_bit(BLOCK_GROUP_FLAG_NEEDS_FREE_SPACE, &block_group->runtime_flags))
goto out;
path = btrfs_alloc_path();
@ -1359,7 +1359,7 @@ int remove_block_group_free_space(struct btrfs_trans_handle *trans,
if (!btrfs_fs_compat_ro(trans->fs_info, FREE_SPACE_TREE))
return 0;
if (block_group->needs_free_space) {
if (test_bit(BLOCK_GROUP_FLAG_NEEDS_FREE_SPACE, &block_group->runtime_flags)) {
/* We never added this block group to the free space tree. */
return 0;
}

2
fs/btrfs/tests/free-space-tree-tests.c
View File

@ -471,7 +471,7 @@ static int run_test(test_func_t test_func, int bitmaps, u32 sectorsize,
}
cache->bitmap_low_thresh = 0;
cache->bitmap_high_thresh = (u32)-1;
cache->needs_free_space = 1;
set_bit(BLOCK_GROUP_FLAG_NEEDS_FREE_SPACE, &cache->runtime_flags);
cache->fs_info = root->fs_info;
btrfs_init_dummy_trans(&trans, root->fs_info);