md: add 'recovery_start' per-device sysfs attribute
authorDan Williams <dan.j.williams@intel.com>
Sun, 13 Dec 2009 04:17:12 +0000 (21:17 -0700)
committerNeilBrown <neilb@suse.de>
Mon, 14 Dec 2009 01:58:57 +0000 (12:58 +1100)
Enable external metadata arrays to manage rebuild checkpointing via a
md/dev-XXX/recovery_start attribute which reflects rdev->recovery_offset

Also update resync_start_store to allow 'none' to be written, for
consistency.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Documentation/md.txt
drivers/md/md.c

Simple merge
diff --cc drivers/md/md.c
Simple merge