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-rw-r--r--fs/ocfs2/alloc.c76
-rw-r--r--fs/ocfs2/alloc.h49
2 files changed, 72 insertions, 53 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index a629656..2c8ce32 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -567,36 +567,6 @@ static inline int ocfs2_et_sanity_check(struct ocfs2_extent_tree *et)
static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc);
static int ocfs2_cache_extent_block_free(struct ocfs2_cached_dealloc_ctxt *ctxt,
struct ocfs2_extent_block *eb);
-
-/*
- * Structures which describe a path through a btree, and functions to
- * manipulate them.
- *
- * The idea here is to be as generic as possible with the tree
- * manipulation code.
- */
-struct ocfs2_path_item {
- struct buffer_head *bh;
- struct ocfs2_extent_list *el;
-};
-
-#define OCFS2_MAX_PATH_DEPTH 5
-
-struct ocfs2_path {
- int p_tree_depth;
- ocfs2_journal_access_func p_root_access;
- struct ocfs2_path_item p_node[OCFS2_MAX_PATH_DEPTH];
-};
-
-#define path_root_bh(_path) ((_path)->p_node[0].bh)
-#define path_root_el(_path) ((_path)->p_node[0].el)
-#define path_root_access(_path)((_path)->p_root_access)
-#define path_leaf_bh(_path) ((_path)->p_node[(_path)->p_tree_depth].bh)
-#define path_leaf_el(_path) ((_path)->p_node[(_path)->p_tree_depth].el)
-#define path_num_items(_path) ((_path)->p_tree_depth + 1)
-
-static int ocfs2_find_path(struct ocfs2_caching_info *ci,
- struct ocfs2_path *path, u32 cpos);
static void ocfs2_adjust_rightmost_records(handle_t *handle,
struct ocfs2_extent_tree *et,
struct ocfs2_path *path,
@@ -606,7 +576,7 @@ static void ocfs2_adjust_rightmost_records(handle_t *handle,
* to build another path. Generally, this involves freeing the buffer
* heads.
*/
-static void ocfs2_reinit_path(struct ocfs2_path *path, int keep_root)
+void ocfs2_reinit_path(struct ocfs2_path *path, int keep_root)
{
int i, start = 0, depth = 0;
struct ocfs2_path_item *node;
@@ -635,7 +605,7 @@ static void ocfs2_reinit_path(struct ocfs2_path *path, int keep_root)
path->p_tree_depth = depth;
}
-static void ocfs2_free_path(struct ocfs2_path *path)
+void ocfs2_free_path(struct ocfs2_path *path)
{
if (path) {
ocfs2_reinit_path(path, 0);
@@ -733,13 +703,13 @@ static struct ocfs2_path *ocfs2_new_path(struct buffer_head *root_bh,
return path;
}
-static struct ocfs2_path *ocfs2_new_path_from_path(struct ocfs2_path *path)
+struct ocfs2_path *ocfs2_new_path_from_path(struct ocfs2_path *path)
{
return ocfs2_new_path(path_root_bh(path), path_root_el(path),
path_root_access(path));
}
-static struct ocfs2_path *ocfs2_new_path_from_et(struct ocfs2_extent_tree *et)
+struct ocfs2_path *ocfs2_new_path_from_et(struct ocfs2_extent_tree *et)
{
return ocfs2_new_path(et->et_root_bh, et->et_root_el,
et->et_root_journal_access);
@@ -752,10 +722,10 @@ static struct ocfs2_path *ocfs2_new_path_from_et(struct ocfs2_extent_tree *et)
* I don't like the way this function's name looks next to
* ocfs2_journal_access_path(), but I don't have a better one.
*/
-static int ocfs2_path_bh_journal_access(handle_t *handle,
- struct ocfs2_caching_info *ci,
- struct ocfs2_path *path,
- int idx)
+int ocfs2_path_bh_journal_access(handle_t *handle,
+ struct ocfs2_caching_info *ci,
+ struct ocfs2_path *path,
+ int idx)
{
ocfs2_journal_access_func access = path_root_access(path);
@@ -772,9 +742,9 @@ static int ocfs2_path_bh_journal_access(handle_t *handle,
/*
* Convenience function to journal all components in a path.
*/
-static int ocfs2_journal_access_path(struct ocfs2_caching_info *ci,
- handle_t *handle,
- struct ocfs2_path *path)
+int ocfs2_journal_access_path(struct ocfs2_caching_info *ci,
+ handle_t *handle,
+ struct ocfs2_path *path)
{
int i, ret = 0;
@@ -1942,8 +1912,8 @@ static void find_path_ins(void *data, struct buffer_head *bh)
ocfs2_path_insert_eb(fp->path, fp->index, bh);
fp->index++;
}
-static int ocfs2_find_path(struct ocfs2_caching_info *ci,
- struct ocfs2_path *path, u32 cpos)
+int ocfs2_find_path(struct ocfs2_caching_info *ci,
+ struct ocfs2_path *path, u32 cpos)
{
struct find_path_data data;
@@ -5104,13 +5074,13 @@ out:
* have been brought into cache (and pinned via the journal), so the
* extra overhead is not expressed in terms of disk reads.
*/
-static int __ocfs2_split_extent(handle_t *handle,
- struct ocfs2_extent_tree *et,
- struct ocfs2_path *path,
- int split_index,
- struct ocfs2_extent_rec *split_rec,
- struct ocfs2_alloc_context *meta_ac,
- struct ocfs2_cached_dealloc_ctxt *dealloc)
+int ocfs2_split_extent(handle_t *handle,
+ struct ocfs2_extent_tree *et,
+ struct ocfs2_path *path,
+ int split_index,
+ struct ocfs2_extent_rec *split_rec,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_cached_dealloc_ctxt *dealloc)
{
int ret = 0;
struct ocfs2_extent_list *el = path_leaf_el(path);
@@ -5267,9 +5237,9 @@ static int ocfs2_change_extent_flag(handle_t *handle,
if (clear_flags)
split_rec.e_flags &= ~clear_flags;
- ret = __ocfs2_split_extent(handle, et, left_path,
- index, &split_rec, meta_ac,
- dealloc);
+ ret = ocfs2_split_extent(handle, et, left_path,
+ index, &split_rec, meta_ac,
+ dealloc);
if (ret)
mlog_errno(ret);
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index df0e778..3f43489 100644
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -115,6 +115,14 @@ int ocfs2_add_clusters_in_btree(handle_t *handle,
struct ocfs2_alloc_context *meta_ac,
enum ocfs2_alloc_restarted *reason_ret);
struct ocfs2_cached_dealloc_ctxt;
+struct ocfs2_path;
+int ocfs2_split_extent(handle_t *handle,
+ struct ocfs2_extent_tree *et,
+ struct ocfs2_path *path,
+ int split_index,
+ struct ocfs2_extent_rec *split_rec,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_cached_dealloc_ctxt *dealloc);
int ocfs2_mark_extent_written(struct inode *inode,
struct ocfs2_extent_tree *et,
handle_t *handle, u32 cpos, u32 len, u32 phys,
@@ -254,4 +262,45 @@ static inline int ocfs2_is_empty_extent(struct ocfs2_extent_rec *rec)
return !rec->e_leaf_clusters;
}
+/*
+ * Structures which describe a path through a btree, and functions to
+ * manipulate them.
+ *
+ * The idea here is to be as generic as possible with the tree
+ * manipulation code.
+ */
+struct ocfs2_path_item {
+ struct buffer_head *bh;
+ struct ocfs2_extent_list *el;
+};
+
+#define OCFS2_MAX_PATH_DEPTH 5
+
+struct ocfs2_path {
+ int p_tree_depth;
+ ocfs2_journal_access_func p_root_access;
+ struct ocfs2_path_item p_node[OCFS2_MAX_PATH_DEPTH];
+};
+
+#define path_root_bh(_path) ((_path)->p_node[0].bh)
+#define path_root_el(_path) ((_path)->p_node[0].el)
+#define path_root_access(_path)((_path)->p_root_access)
+#define path_leaf_bh(_path) ((_path)->p_node[(_path)->p_tree_depth].bh)
+#define path_leaf_el(_path) ((_path)->p_node[(_path)->p_tree_depth].el)
+#define path_num_items(_path) ((_path)->p_tree_depth + 1)
+
+void ocfs2_reinit_path(struct ocfs2_path *path, int keep_root);
+void ocfs2_free_path(struct ocfs2_path *path);
+int ocfs2_find_path(struct ocfs2_caching_info *ci,
+ struct ocfs2_path *path,
+ u32 cpos);
+struct ocfs2_path *ocfs2_new_path_from_path(struct ocfs2_path *path);
+struct ocfs2_path *ocfs2_new_path_from_et(struct ocfs2_extent_tree *et);
+int ocfs2_path_bh_journal_access(handle_t *handle,
+ struct ocfs2_caching_info *ci,
+ struct ocfs2_path *path,
+ int idx);
+int ocfs2_journal_access_path(struct ocfs2_caching_info *ci,
+ handle_t *handle,
+ struct ocfs2_path *path);
#endif /* OCFS2_ALLOC_H */
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