From: NeilBrown <neilb@suse.de>
Date: Fri, 6 Jan 2006 08:20:12 +0000 (-0800)
Subject: [PATCH] md: improve raid1 "IO Barrier" concept
X-Git-Tag: v2.6.16-rc1~936^2~50
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=17999be4aa408e7ff3b9d32c735649676567a3cd;p=pandora-kernel.git

[PATCH] md: improve raid1 "IO Barrier" concept

raid1 needs to put up a barrier to new requests while it does resync or other
background recovery.  The code for this is currently open-coded, slighty
obscure by its use of two waitqueues, and not documented.

This patch gathers all the related code into 4 functions, and includes a
comment which (hopefully) explains what is happening.

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

Reading git-diff-tree failed