tree b7b808f9f5a5d7359749dd48835da17fa637bd25
parent 7de4f8d6d8298766c07357b76cb61f690b262c3b
author Konstantin Dorfman <kdorfman@codeaurora.org> 1362929956 +0200
committer Konstantin Dorfman <kdorfman@codeaurora.org> 1363087957 +0200

mmc: fix read latency of urgent request

In order to improve read request latency, urgent notification allowed
anytime, when current or previous requests are existing in the mmc layer.
It is not allowed to stop following running requests:
- urgent request: block layer should serialize urgent request notification.
- read request: it can't be packed, therefore it is better
to wait for its completion.
- REQ_FUA: interruption and delay in such request will impact sync process
of upper layers.

Change-Id: Id7d1480cce2059c1f23a5f29ad8f74e858be1ee6
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>