commit c65060ad4274f70048d62e0a86332cd3fd23f28d
author Namhyung Kim <namhyung@gmail.com> Mon Jul 18 17:38:49 2011 +1000
committer NeilBrown <neilb@suse.de> Mon Jul 18 17:38:49 2011 +1000
tree 5e6c3cfeb122da72e1bfa3bea07d8f16f453dc9f
parent 778ca01852e6cc9ff335119b37a1938a978df384

md/raid10: share pages between read and write bio's during recovery

When performing a recovery, only first 2 slots in r10_bio are in use,
for read and write respectively. However all of pages in the write bio
are never used and just replaced to read bio's when the read completes.

Get rid of those unused pages and share read pages properly.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>