From: Stefan Weinhuber <wein@de.ibm.com>
Date: Sun, 1 May 2005 15:58:59 +0000 (-0700)
Subject: [PATCH] s390: enable write barriers in the dasd driver
X-Git-Tag: v2.6.12-rc4~136^2~105
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ed93c827eea181d87ce078cd1d671128c030b5a;p=pandora-kernel.git

[PATCH] s390: enable write barriers in the dasd driver

The DASD device driver never reorders the I/O requests and relies on the
hardware to write all data to nonvolatile storage before signaling a
successful write.  Hence, the only thing we have to do to support write
barriers is to set the queue ordered flag.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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