@@ -3377,3 +3377,44 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
}
return 0;
}
+
+void btrfs_freeze_block_group(struct btrfs_block_group *cache)
+{
+ atomic_inc(&cache->frozen);
+}
+
+void btrfs_unfreeze_block_group(struct btrfs_block_group *block_group)
+{
+ struct btrfs_fs_info *fs_info = block_group->fs_info;
+ struct extent_map_tree *em_tree;
+ struct extent_map *em;
+ bool cleanup;
+
+ spin_lock(&block_group->lock);
+ cleanup = (atomic_dec_and_test(&block_group->frozen) &&
+ block_group->removed);
+ spin_unlock(&block_group->lock);
+
+ if (cleanup) {
+ mutex_lock(&fs_info->chunk_mutex);
+ em_tree = &fs_info->mapping_tree;
+ write_lock(&em_tree->lock);
+ em = lookup_extent_mapping(em_tree, block_group->start,
+ 1);
+ BUG_ON(!em); /* logic error, can't happen */
+ remove_extent_mapping(em_tree, em);
+ write_unlock(&em_tree->lock);
+ mutex_unlock(&fs_info->chunk_mutex);
+
+ /* once for us and once for the tree */
+ free_extent_map(em);
+ free_extent_map(em);
+
+ /*
+ * We may have left one free space entry and other possible
+ * tasks trimming this block group have left 1 entry each one.
+ * Free them if any.
+ */
+ __btrfs_remove_free_space_cache(block_group->free_space_ctl);
+ }
+}
@@ -292,6 +292,9 @@ static inline int btrfs_block_group_done(struct btrfs_block_group *cache)
cache->cached == BTRFS_CACHE_ERROR;
}
+void btrfs_freeze_block_group(struct btrfs_block_group *cache);
+void btrfs_unfreeze_block_group(struct btrfs_block_group *cache);
+
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start,
u64 physical, u64 **logical, int *naddrs, int *stripe_len);
@@ -2498,8 +2498,6 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_ref *generic_ref);
int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr);
-void btrfs_freeze_block_group(struct btrfs_block_group *cache);
-void btrfs_unfreeze_block_group(struct btrfs_block_group *cache);
void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
enum btrfs_reserve_flush_enum {
@@ -3762,47 +3762,6 @@ static int trim_bitmaps(struct btrfs_block_group *block_group,
return ret;
}
-void btrfs_freeze_block_group(struct btrfs_block_group *cache)
-{
- atomic_inc(&cache->frozen);
-}
-
-void btrfs_unfreeze_block_group(struct btrfs_block_group *block_group)
-{
- struct btrfs_fs_info *fs_info = block_group->fs_info;
- struct extent_map_tree *em_tree;
- struct extent_map *em;
- bool cleanup;
-
- spin_lock(&block_group->lock);
- cleanup = (atomic_dec_and_test(&block_group->frozen) &&
- block_group->removed);
- spin_unlock(&block_group->lock);
-
- if (cleanup) {
- mutex_lock(&fs_info->chunk_mutex);
- em_tree = &fs_info->mapping_tree;
- write_lock(&em_tree->lock);
- em = lookup_extent_mapping(em_tree, block_group->start,
- 1);
- BUG_ON(!em); /* logic error, can't happen */
- remove_extent_mapping(em_tree, em);
- write_unlock(&em_tree->lock);
- mutex_unlock(&fs_info->chunk_mutex);
-
- /* once for us and once for the tree */
- free_extent_map(em);
- free_extent_map(em);
-
- /*
- * We may have left one free space entry and other possible
- * tasks trimming this block group have left 1 entry each one.
- * Free them if any.
- */
- __btrfs_remove_free_space_cache(block_group->free_space_ctl);
- }
-}
-
int btrfs_trim_block_group(struct btrfs_block_group *block_group,
u64 *trimmed, u64 start, u64 end, u64 minlen)
{