Allow setting start point for requested check/repair
This makes it possible to just resync a small part of an array.
e.g. if a drive reports that it has questionable sectors,
a 'repair' of just the region covering those sectors will
cause them to be read and, if there is an error, re-written
with correct data.
Signed-off-by: Neil Brown <neilb@suse.de>
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 3dea9f5..780e061 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -227,6 +227,8 @@
atomic_t recovery_active; /* blocks scheduled, but not written */
wait_queue_head_t recovery_wait;
sector_t recovery_cp;
+ sector_t resync_min; /* user requested sync
+ * starts here */
sector_t resync_max; /* resync should pause
* when it gets here */