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-rw-r--r--fs/btrfs/backref.h136
1 files changed, 26 insertions, 110 deletions
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h
index ab4ca0eda6..e8c22cccb5 100644
--- a/fs/btrfs/backref.h
+++ b/fs/btrfs/backref.h
@@ -6,11 +6,23 @@
#ifndef BTRFS_BACKREF_H
#define BTRFS_BACKREF_H
-#include <linux/btrfs.h>
+#include <linux/types.h>
+#include <linux/rbtree.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <uapi/linux/btrfs.h>
+#include <uapi/linux/btrfs_tree.h>
#include "messages.h"
-#include "ulist.h"
+#include "locking.h"
#include "disk-io.h"
#include "extent_io.h"
+#include "ctree.h"
+
+struct extent_inode_elem;
+struct ulist;
+struct btrfs_extent_item;
+struct btrfs_trans_handle;
+struct btrfs_fs_info;
/*
* Used by implementations of iterate_extent_inodes_t (see definition below) to
@@ -271,22 +283,6 @@ struct btrfs_backref_iter {
struct btrfs_backref_iter *btrfs_backref_iter_alloc(struct btrfs_fs_info *fs_info);
-static inline void btrfs_backref_iter_free(struct btrfs_backref_iter *iter)
-{
- if (!iter)
- return;
- btrfs_free_path(iter->path);
- kfree(iter);
-}
-
-static inline struct extent_buffer *btrfs_backref_get_eb(
- struct btrfs_backref_iter *iter)
-{
- if (!iter)
- return NULL;
- return iter->path->nodes[0];
-}
-
/*
* For metadata with EXTENT_ITEM key (non-skinny) case, the first inline data
* is btrfs_tree_block_info, without a btrfs_extent_inline_ref header.
@@ -306,25 +302,6 @@ int btrfs_backref_iter_start(struct btrfs_backref_iter *iter, u64 bytenr);
int btrfs_backref_iter_next(struct btrfs_backref_iter *iter);
-static inline bool btrfs_backref_iter_is_inline_ref(
- struct btrfs_backref_iter *iter)
-{
- if (iter->cur_key.type == BTRFS_EXTENT_ITEM_KEY ||
- iter->cur_key.type == BTRFS_METADATA_ITEM_KEY)
- return true;
- return false;
-}
-
-static inline void btrfs_backref_iter_release(struct btrfs_backref_iter *iter)
-{
- iter->bytenr = 0;
- iter->item_ptr = 0;
- iter->cur_ptr = 0;
- iter->end_ptr = 0;
- btrfs_release_path(iter->path);
- memset(&iter->cur_key, 0, sizeof(iter->cur_key));
-}
-
/*
* Backref cache related structures
*
@@ -452,83 +429,22 @@ struct btrfs_backref_edge *btrfs_backref_alloc_edge(
#define LINK_LOWER (1 << 0)
#define LINK_UPPER (1 << 1)
-static inline void btrfs_backref_link_edge(struct btrfs_backref_edge *edge,
- struct btrfs_backref_node *lower,
- struct btrfs_backref_node *upper,
- int link_which)
-{
- ASSERT(upper && lower && upper->level == lower->level + 1);
- edge->node[LOWER] = lower;
- edge->node[UPPER] = upper;
- if (link_which & LINK_LOWER)
- list_add_tail(&edge->list[LOWER], &lower->upper);
- if (link_which & LINK_UPPER)
- list_add_tail(&edge->list[UPPER], &upper->lower);
-}
-
-static inline void btrfs_backref_free_node(struct btrfs_backref_cache *cache,
- struct btrfs_backref_node *node)
-{
- if (node) {
- ASSERT(list_empty(&node->list));
- ASSERT(list_empty(&node->lower));
- ASSERT(node->eb == NULL);
- cache->nr_nodes--;
- btrfs_put_root(node->root);
- kfree(node);
- }
-}
-
-static inline void btrfs_backref_free_edge(struct btrfs_backref_cache *cache,
- struct btrfs_backref_edge *edge)
-{
- if (edge) {
- cache->nr_edges--;
- kfree(edge);
- }
-}
-
-static inline void btrfs_backref_unlock_node_buffer(
- struct btrfs_backref_node *node)
-{
- if (node->locked) {
- btrfs_tree_unlock(node->eb);
- node->locked = 0;
- }
-}
-static inline void btrfs_backref_drop_node_buffer(
- struct btrfs_backref_node *node)
-{
- if (node->eb) {
- btrfs_backref_unlock_node_buffer(node);
- free_extent_buffer(node->eb);
- node->eb = NULL;
- }
-}
-
-/*
- * Drop the backref node from cache without cleaning up its children
- * edges.
- *
- * This can only be called on node without parent edges.
- * The children edges are still kept as is.
- */
-static inline void btrfs_backref_drop_node(struct btrfs_backref_cache *tree,
- struct btrfs_backref_node *node)
-{
- ASSERT(list_empty(&node->upper));
-
- btrfs_backref_drop_node_buffer(node);
- list_del_init(&node->list);
- list_del_init(&node->lower);
- if (!RB_EMPTY_NODE(&node->rb_node))
- rb_erase(&node->rb_node, &tree->rb_root);
- btrfs_backref_free_node(tree, node);
-}
+void btrfs_backref_link_edge(struct btrfs_backref_edge *edge,
+ struct btrfs_backref_node *lower,
+ struct btrfs_backref_node *upper,
+ int link_which);
+void btrfs_backref_free_node(struct btrfs_backref_cache *cache,
+ struct btrfs_backref_node *node);
+void btrfs_backref_free_edge(struct btrfs_backref_cache *cache,
+ struct btrfs_backref_edge *edge);
+void btrfs_backref_unlock_node_buffer(struct btrfs_backref_node *node);
+void btrfs_backref_drop_node_buffer(struct btrfs_backref_node *node);
void btrfs_backref_cleanup_node(struct btrfs_backref_cache *cache,
struct btrfs_backref_node *node);
+void btrfs_backref_drop_node(struct btrfs_backref_cache *tree,
+ struct btrfs_backref_node *node);
void btrfs_backref_release_cache(struct btrfs_backref_cache *cache);