From: Kent Overstreet <kmo@daterainc.com>
Date: Wed, 14 Aug 2013 10:57:41 +0000 (-0700)
Subject: bcache: Fix a flush/fua performance bug
X-Git-Tag: next-20130912~34^2~6^2~53
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9df79a37eeb7ee89dc56aeed3051be676369359a;p=karo-tx-linux.git

bcache: Fix a flush/fua performance bug

bch_journal_meta() was missing the flush to make the journal write
actually go down (instead of waiting up to journal_delay_ms)...

Whoops

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v3.10
---

diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index f5203dfc4cfe..8435f81e5d85 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -695,6 +695,7 @@ void bch_journal_meta(struct cache_set *c, struct closure *cl)
 		if (cl)
 			BUG_ON(!closure_wait(&w->wait, cl));
 
+		closure_flush(&c->journal.io);
 		__journal_try_write(c, true);
 	}
 }