bcache: Add bch_btree_keys_u64s_remaining()
authorKent Overstreet <kmo@daterainc.com>
Tue, 12 Nov 2013 03:03:54 +0000 (19:03 -0800)
committerKent Overstreet <kmo@daterainc.com>
Wed, 8 Jan 2014 21:05:13 +0000 (13:05 -0800)
Helper function to explicitly check how much space is free in a btree node

Signed-off-by: Kent Overstreet <kmo@daterainc.com>

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