commit c620727779f7cc8ea96efb71f0651a26349e59c1
author NeilBrown <neilb@suse.de> Wed Feb 06 01:39:52 2008 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> Wed Feb 06 10:41:18 2008 -0800
tree 777abdad9c9ef10cb4df5c0efc736e6c64851ed8
parent c303da6d713b87b7b3f999f5acce8ecc76ff1adb

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>