bcache: Add bch_btree_keys_u64s_remaining()

Helper function to explicitly check how much space is free in a btree node

Kent Overstreet committed 13 years ago

Commit 59158fd1 parent a85e9683 files · +31 −13Browse files

Showing the changes to include/uapi/linux (1 of 3 files). Show all

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@@ -39,6 +39,7 @@ static inline void SET_##name(struct bkey *k, unsigned i, __u64 v) \ · 38 unmodified lines
39	39	}
40	40
41	41	#define KEY_SIZE_BITS 16
	42	+#define KEY_MAX_U64S 8
42	43
43	44	KEY_FIELD(KEY_PTRS, high, 60, 3)
44	45	KEY_FIELD(HEADER_SIZE, high, 58, 2)