bcache: Convert writeback to a kthread
authorKent Overstreet <kmo@daterainc.com>
Thu, 25 Jul 2013 00:50:06 +0000 (17:50 -0700)
committerKent Overstreet <kmo@daterainc.com>
Mon, 11 Nov 2013 05:56:05 +0000 (21:56 -0800)
This simplifies the writeback flow control quite a bit - previously, it
was conceptually two coroutines, refill_dirty() and read_dirty(). This
makes the code quite a bit more straightforward.

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

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