tree 822e95ed42ca9d1526964b3d06ef66ec4edd0ab9
parent 69335ef3bc5b766f34db2d688be1d35313138bca
author NeilBrown <neilb@suse.de> 1324595874 +1100
committer NeilBrown <neilb@suse.de> 1324595874 +1100

md/raid10:  change read_balance to return an rdev

It makes more sense to return an rdev than just an index as
read_balance() gets a reference to the rdev and so returning
the pointer make this more idiomatic.

This will be needed in a future patch when we might return
a 'replacement' rdev instead of the main rdev.

Signed-off-by: NeilBrown <neilb@suse.de>