tree 54bf868afb3375cfdb0d01d6ce9e5eea47395f85
parent ab6085c795a71b6a21afe7469d30a365338add7a
author NeilBrown <neilb@suse.de> 1179953890 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1179976454 -0700

md: fix bug with linear hot-add and elsewhere

Adding a drive to a linear array seems to have stopped working, due to changes
elsewhere in md, and insufficient ongoing testing...

So the patch to make linear hot-add work in the first place introduced a
subtle bug elsewhere that interracts poorly with older version of mdadm.

This fixes it all up.

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>