tree dda360da5a5f66eb36b55a4c2e8eb985e997ffd6
parent 458dbb3d07574e8fcdcb921ac155ccd81b16b05f
author Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 1197986075 +0200
committer Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 1198689316 +0200

UBI: fix ubi_wl_flush

The flush function should finish all the pending jobs. But if
somebody else is doing a work, this function should wait and let
it finish.

This patche uses rw semaphore for synchronization purpose - it
just looks quite convinient.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>