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-rw-r--r--fs/ocfs2/refcounttree.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index a923535d9c37..eb0f4a047938 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -26,6 +26,13 @@
#include "super.h"
#include "buffer_head_io.h"
#include "blockcheck.h"
+#include "refcounttree.h"
+
+static inline struct ocfs2_refcount_tree *
+cache_info_to_refcount(struct ocfs2_caching_info *ci)
+{
+ return container_of(ci, struct ocfs2_refcount_tree, rf_ci);
+}
static int ocfs2_validate_refcount_block(struct super_block *sb,
struct buffer_head *bh)
@@ -97,3 +104,55 @@ static int ocfs2_read_refcount_block(struct ocfs2_caching_info *ci,
return rc;
}
+
+static u64 ocfs2_refcount_cache_owner(struct ocfs2_caching_info *ci)
+{
+ struct ocfs2_refcount_tree *rf = cache_info_to_refcount(ci);
+
+ return rf->rf_blkno;
+}
+
+static struct super_block *
+ocfs2_refcount_cache_get_super(struct ocfs2_caching_info *ci)
+{
+ struct ocfs2_refcount_tree *rf = cache_info_to_refcount(ci);
+
+ return rf->rf_sb;
+}
+
+static void ocfs2_refcount_cache_lock(struct ocfs2_caching_info *ci)
+{
+ struct ocfs2_refcount_tree *rf = cache_info_to_refcount(ci);
+
+ spin_lock(&rf->rf_lock);
+}
+
+static void ocfs2_refcount_cache_unlock(struct ocfs2_caching_info *ci)
+{
+ struct ocfs2_refcount_tree *rf = cache_info_to_refcount(ci);
+
+ spin_unlock(&rf->rf_lock);
+}
+
+static void ocfs2_refcount_cache_io_lock(struct ocfs2_caching_info *ci)
+{
+ struct ocfs2_refcount_tree *rf = cache_info_to_refcount(ci);
+
+ mutex_lock(&rf->rf_io_mutex);
+}
+
+static void ocfs2_refcount_cache_io_unlock(struct ocfs2_caching_info *ci)
+{
+ struct ocfs2_refcount_tree *rf = cache_info_to_refcount(ci);
+
+ mutex_unlock(&rf->rf_io_mutex);
+}
+
+static const struct ocfs2_caching_operations ocfs2_refcount_caching_ops = {
+ .co_owner = ocfs2_refcount_cache_owner,
+ .co_get_super = ocfs2_refcount_cache_get_super,
+ .co_cache_lock = ocfs2_refcount_cache_lock,
+ .co_cache_unlock = ocfs2_refcount_cache_unlock,
+ .co_io_lock = ocfs2_refcount_cache_io_lock,
+ .co_io_unlock = ocfs2_refcount_cache_io_unlock,
+};