From: NeilBrown <neilb@suse.de>
Date: Tue, 3 Oct 2006 08:15:53 +0000 (-0700)
Subject: [PATCH] md: define backing_dev_info.congested_fn for raid0 and linear
X-Git-Tag: v2.6.19-rc1~242
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26be34dc3a46be983352dd89683db374b0cb73fa;p=pandora-kernel.git

[PATCH] md: define backing_dev_info.congested_fn for raid0 and linear

Each backing_dev needs to be able to report whether it is congested, either by
modulating BDI_*_congested in ->state, or by defining a ->congested_fn.
md/raid did neither of these.  This patch add a congested_fn which simply
checks all component devices to see if they are congested.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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