fs: btrfs: Cleanup the old implementation

This cleans up the now unneeded code from the old btrfs implementation.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>

1 files changed, 0 insertions, 178 deletions

diff --git a/fs/btrfs/chunk-map.c b/fs/btrfs/chunk-map.c
deleted file mode 100644
index bff83e4dc8..0000000000
--- a/fs/btrfs/chunk-map.c
+++ /dev/null
@@ -1,178 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * BTRFS filesystem implementation for U-Boot
- *
- * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz
- */
-
-#include "btrfs.h"
-#include <log.h>
-#include <malloc.h>
-
-struct chunk_map_item {
-	struct rb_node node;
-	u64 logical;
-	u64 length;
-	u64 physical;
-};
-
-static int add_chunk_mapping(struct btrfs_key *key, struct btrfs_chunk *chunk)
-{
-	struct btrfs_stripe *stripe;
-	u64 block_profile = chunk->type & BTRFS_BLOCK_GROUP_PROFILE_MASK;
-	struct rb_node **new = &(btrfs_info.chunks_root.rb_node), *prnt = NULL;
-	struct chunk_map_item *map_item;
-
-	if (block_profile && block_profile != BTRFS_BLOCK_GROUP_DUP) {
-		printf("%s: unsupported chunk profile %llu\n", __func__,
-		       block_profile);
-		return -1;
-	} else if (!chunk->length) {
-		printf("%s: zero length chunk\n", __func__);
-		return -1;
-	}
-
-	stripe = &chunk->stripe;
-	btrfs_stripe_to_cpu(stripe);
-
-	while (*new) {
-		struct chunk_map_item *this;
-
-		this = rb_entry(*new, struct chunk_map_item, node);
-
-		prnt = *new;
-		if (key->offset < this->logical) {
-			new = &((*new)->rb_left);
-		} else if (key->offset > this->logical) {
-			new = &((*new)->rb_right);
-		} else {
-			debug("%s: Logical address %llu already in map!\n",
-			      __func__, key->offset);
-			return 0;
-		}
-	}
-
-	map_item = malloc(sizeof(struct chunk_map_item));
-	if (!map_item)
-		return -1;
-
-	map_item->logical = key->offset;
-	map_item->length = chunk->length;
-	map_item->physical = le64_to_cpu(chunk->stripe.offset);
-	rb_link_node(&map_item->node, prnt, new);
-	rb_insert_color(&map_item->node, &btrfs_info.chunks_root);
-
-	debug("%s: Mapping %llu to %llu\n", __func__, map_item->logical,
-	      map_item->physical);
-
-	return 0;
-}
-
-u64 btrfs_map_logical_to_physical(u64 logical)
-{
-	struct rb_node *node = btrfs_info.chunks_root.rb_node;
-
-	while (node) {
-		struct chunk_map_item *item;
-
-		item = rb_entry(node, struct chunk_map_item, node);
-
-		if (item->logical > logical)
-			node = node->rb_left;
-		else if (logical >= item->logical + item->length)
-			node = node->rb_right;
-		else
-			return item->physical + logical - item->logical;
-	}
-
-	printf("%s: Cannot map logical address %llu to physical\n", __func__,
-	       logical);
-
-	return -1ULL;
-}
-
-void btrfs_chunk_map_exit(void)
-{
-	struct rb_node *now, *next;
-	struct chunk_map_item *item;
-
-	for (now = rb_first_postorder(&btrfs_info.chunks_root); now; now = next)
-	{
-		item = rb_entry(now, struct chunk_map_item, node);
-		next = rb_next_postorder(now);
-		free(item);
-	}
-}
-
-int btrfs_chunk_map_init(void)
-{
-	u8 sys_chunk_array_copy[sizeof(btrfs_info.sb.sys_chunk_array)];
-	u8 * const start = sys_chunk_array_copy;
-	u8 * const end = start + btrfs_info.sb.sys_chunk_array_size;
-	u8 *cur;
-	struct btrfs_key *key;
-	struct btrfs_chunk *chunk;
-
-	btrfs_info.chunks_root = RB_ROOT;
-
-	memcpy(sys_chunk_array_copy, btrfs_info.sb.sys_chunk_array,
-	       sizeof(sys_chunk_array_copy));
-
-	for (cur = start; cur < end;) {
-		key = (struct btrfs_key *) cur;
-		cur += sizeof(struct btrfs_key);
-		chunk = (struct btrfs_chunk *) cur;
-
-		btrfs_key_to_cpu(key);
-		btrfs_chunk_to_cpu(chunk);
-
-		if (key->type != BTRFS_CHUNK_ITEM_KEY) {
-			printf("%s: invalid key type %u\n", __func__,
-			       key->type);
-			return -1;
-		}
-
-		if (add_chunk_mapping(key, chunk))
-			return -1;
-
-		cur += sizeof(struct btrfs_chunk);
-		cur += sizeof(struct btrfs_stripe) * (chunk->num_stripes - 1);
-	}
-
-	return 0;
-}
-
-int __btrfs_read_chunk_tree(void)
-{
-	struct __btrfs_path path;
-	struct btrfs_key key, *found_key;
-	struct btrfs_chunk *chunk;
-	int res = 0;
-
-	key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID;
-	key.type = BTRFS_CHUNK_ITEM_KEY;
-	key.offset = 0;
-
-	if (btrfs_search_tree(&btrfs_info.chunk_root, &key, &path))
-		return -1;
-
-	do {
-		found_key = btrfs_path_leaf_key(&path);
-		if (btrfs_comp_keys_type(&key, found_key))
-			continue;
-
-		chunk = btrfs_path_item_ptr(&path, struct btrfs_chunk);
-		btrfs_chunk_to_cpu(chunk);
-		if (add_chunk_mapping(found_key, chunk)) {
-			res = -1;
-			break;
-		}
-	} while (!(res = btrfs_next_slot(&path)));
-
-	__btrfs_free_path(&path);
-
-	if (res < 0)
-		return -1;
-
-	return 0;
-}