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-rw-r--r--fs/btrfs/hash.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/fs/btrfs/hash.h b/fs/btrfs/hash.h
index db2ff9773b9..118a2316e5d 100644
--- a/fs/btrfs/hash.h
+++ b/fs/btrfs/hash.h
@@ -19,9 +19,24 @@
#ifndef __HASH__
#define __HASH__
-#include <linux/crc32c.h>
+int __init btrfs_hash_init(void);
+
+void btrfs_hash_exit(void);
+
+u32 btrfs_crc32c(u32 crc, const void *address, unsigned int length);
+
static inline u64 btrfs_name_hash(const char *name, int len)
{
- return crc32c((u32)~1, name, len);
+ return btrfs_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) btrfs_crc32c(parent_objectid, name, len);
+}
+
#endif