From: Namhyung Kim <namhyung@gmail.com>
Date: Thu, 25 Aug 2011 04:43:34 +0000 (+1000)
Subject: md: use REQ_NOIDLE flag in md_super_write()
X-Git-Tag: v3.1-rc5~4^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a5bf4df0c88b88d34b6f0e3bc8a402dac7d14611;p=pandora-kernel.git

md: use REQ_NOIDLE flag in md_super_write()

Queue idling is used for the anticipation of immediate
sequencial I/O's but md_super_write() is a kind of one-
shot operation, coupled with md_super_wait(), so the
idling in this case will be just a waste of time.

Specifying REQ_NOIDLE prevents it. Instead of adding
the flag to submit_bio() directly, use pre-defined
macro WRITE_FLUSH_FUA.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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