#include <linux/sizes.h>
#include <linux/dynamic_debug.h>
#include <linux/refcount.h>
+#include <linux/crc32c.h>
#include "extent_io.h"
#include "extent_map.h"
#include "async-thread.h"
#define BTRFS_MAX_EXTENT_SIZE SZ_128M
+
/*
* Count how many BTRFS_MAX_EXTENT_SIZE cover the @size
*/
((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \
btrfs_item_offset_nr(leaf, slot)))
+static inline u64 btrfs_name_hash(const char *name, int len)
+{
+ return crc32c((u32)~1, name, len);
+}
+
+/*
+ * Figure the key offset of an extended inode ref
+ */
+static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name,
+ int len)
+{
+ return (u64) crc32c(parent_objectid, name, len);
+}
+
static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
{
return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) &&