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 363b88131f011ceea51bc6b1ebfe542e777347cd..ead001c9bed8c52be18feaf7504f6ee8caf92d08 100644 (file)
--- 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) {