tree bb544e7b059228789411b4a601ad6e2157a38e08
parent 7fbbd05799976c0611dcb229649260504b2bdef5
author Richard Weinberger <richard@nod.at> 1411141076 +0200
committer Artem Bityutskiy <artem.bityutskiy@linux.intel.com> 1411562176 +0300

UBI: Fix livelock in produce_free_peb()

The while loop in produce_free_peb() assumes that each work will produce a
free PEB. This is not true.
If ubi->works_count is 1 and the only scheduled work is the
wear_leveling_worker() produce_free_peb() can loop forever in case
nobody schedules an erase work.
Fix this issue by checking in the while loop whether work is scheduled.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>