From: NeilBrown <neilb@suse.de>
Date: Wed, 6 Feb 2008 09:39:52 +0000 (-0800)
Subject: md: allow a maximum extent to be set for resyncing
X-Git-Tag: v2.6.25-rc1~552
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c620727779f7cc8ea96efb71f0651a26349e59c1;p=pandora-kernel.git

md: allow a maximum extent to be set for resyncing

This allows userspace to control resync/reshape progress and synchronise it
with other activities, such as shared access in a SAN, or backing up critical
sections during a tricky reshape.

Writing a number of sectors (which must be a multiple of the chunk size if
such is meaningful) causes a resync to pause when it gets to that point.

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

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