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UBI: fix ubi_wl_flush
authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Tue, 18 Dec 2007 13:54:35 +0000 (15:54 +0200)
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Wed, 26 Dec 2007 17:15:16 +0000 (19:15 +0200)
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>

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