From: Richard Weinberger <richard@nod.at>
Date: Sun, 4 Aug 2013 17:23:51 +0000 (+0000)
Subject: um: hostfs: Fix writeback
X-Git-Tag: v3.12-rc1~94^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65984ff9d2179a97e5a11aaef1e86fdb276cfad5;p=pandora-kernel.git

um: hostfs: Fix writeback

We have to implement ->release() and trigger writeback from it.
Otherwise we might lose dirty pages at munmap().

Signed-off-by: Richard Weinberger <richard@nod.at>
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