From: Kent Overstreet <kmo@daterainc.com>
Date: Wed, 11 Sep 2013 01:48:51 +0000 (-0700)
Subject: bcache: Add btree_map() functions
X-Git-Tag: v3.13-rc1~68^2~1^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48dad8baf92fe8967d9e1358af1cfdda1d2d3298;p=pandora-kernel.git

bcache: Add btree_map() functions

Lots of stuff has been open coding its own btree traversal - which is
generally pretty simple code, but there are a few subtleties.

This adds new new functions, bch_btree_map_nodes() and
bch_btree_map_keys(), which do the traversal for you. Everything that's
open coding btree traversal now (with the exception of garbage
collection) is slowly going to be converted to these two functions;
being able to write other code at a higher level of abstraction  is a
big improvement w.r.t. overall code quality.

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