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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /fs/btrfs/free-space-tree.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fs/btrfs/free-space-tree.h')
-rw-r--r--fs/btrfs/free-space-tree.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/fs/btrfs/free-space-tree.h b/fs/btrfs/free-space-tree.h
new file mode 100644
index 000000000..6d5551d0c
--- /dev/null
+++ b/fs/btrfs/free-space-tree.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2015 Facebook. All rights reserved.
+ */
+
+#ifndef BTRFS_FREE_SPACE_TREE_H
+#define BTRFS_FREE_SPACE_TREE_H
+
+struct btrfs_caching_control;
+
+/*
+ * The default size for new free space bitmap items. The last bitmap in a block
+ * group may be truncated, and none of the free space tree code assumes that
+ * existing bitmaps are this size.
+ */
+#define BTRFS_FREE_SPACE_BITMAP_SIZE 256
+#define BTRFS_FREE_SPACE_BITMAP_BITS (BTRFS_FREE_SPACE_BITMAP_SIZE * BITS_PER_BYTE)
+
+void set_free_space_tree_thresholds(struct btrfs_block_group *block_group);
+int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info);
+int btrfs_delete_free_space_tree(struct btrfs_fs_info *fs_info);
+int btrfs_rebuild_free_space_tree(struct btrfs_fs_info *fs_info);
+int load_free_space_tree(struct btrfs_caching_control *caching_ctl);
+int add_block_group_free_space(struct btrfs_trans_handle *trans,
+ struct btrfs_block_group *block_group);
+int remove_block_group_free_space(struct btrfs_trans_handle *trans,
+ struct btrfs_block_group *block_group);
+int add_to_free_space_tree(struct btrfs_trans_handle *trans,
+ u64 start, u64 size);
+int remove_from_free_space_tree(struct btrfs_trans_handle *trans,
+ u64 start, u64 size);
+
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+struct btrfs_free_space_info *
+search_free_space_info(struct btrfs_trans_handle *trans,
+ struct btrfs_block_group *block_group,
+ struct btrfs_path *path, int cow);
+int __add_to_free_space_tree(struct btrfs_trans_handle *trans,
+ struct btrfs_block_group *block_group,
+ struct btrfs_path *path, u64 start, u64 size);
+int __remove_from_free_space_tree(struct btrfs_trans_handle *trans,
+ struct btrfs_block_group *block_group,
+ struct btrfs_path *path, u64 start, u64 size);
+int convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans,
+ struct btrfs_block_group *block_group,
+ struct btrfs_path *path);
+int convert_free_space_to_extents(struct btrfs_trans_handle *trans,
+ struct btrfs_block_group *block_group,
+ struct btrfs_path *path);
+int free_space_test_bit(struct btrfs_block_group *block_group,
+ struct btrfs_path *path, u64 offset);
+#endif
+
+#endif