From: Surbhi Palande <sap@daterainc.com>
Date: Thu, 10 Apr 2014 23:09:51 +0000 (-0700)
Subject: bcache: Fix to remove the rcu_sched stalls.
X-Git-Tag: v3.17-rc1~31^2^2~19
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=dbd810ab678d262d3772d29b65844d7b20dc47bc;p=karo-tx-linux.git

bcache: Fix to remove the rcu_sched stalls.

while loop was executing infinitely.
This fix ends the while loop gracefully.

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

diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index 363b88131f01..ead001c9bed8 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -194,7 +194,8 @@ int bch_journal_read(struct cache_set *c, struct list_head *list)
 			continue;
 bsearch:
 		/* Binary search */
-		m = r = find_next_bit(bitmap, ca->sb.njournal_buckets, l + 1);
+		m = l;
+		r = find_next_bit(bitmap, ca->sb.njournal_buckets, l + 1);
 		pr_debug("starting binary search, l %u r %u", l, r);
 
 		while (l + 1 < r) {