From: Zach Brown <zach.brown@oracle.com>
Date: Sun, 10 Dec 2006 10:20:56 +0000 (-0800)
Subject: [PATCH] dio: call blk_run_address_space() once per op
X-Git-Tag: v2.6.20-rc1~145^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=17a7b1d74b1207f8f1af40b5d184989076d08f8b;p=pandora-kernel.git

[PATCH] dio: call blk_run_address_space() once per op

We only need to call blk_run_address_space() once after all the bios for the
direct IO op have been submitted.  This removes the chance of calling
blk_run_address_space() after spurious wake ups as the sync path waits for
bios to drain.  It's also one less difference betwen the sync and async paths.

In the process we remove a redundant dio_bio_submit() that its caller had
already performed.

Signed-off-by: Zach Brown <zach.brown@oracle.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Suparna Bhattacharya <suparna@in.ibm.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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