[PATCH 012 of 13] md: Make 'reshape' a possible sync_action action.

[NeilBrown <neilb@suse.de>]

This allows reshape to be triggerred via sysfs (which is the
only way to start it happening).

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

### Diffstat output
 ./drivers/md/md.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff ./drivers/md/md.c~current~ ./drivers/md/md.c
--- ./drivers/md/md.c~current~	2006-03-17 11:48:59.000000000 +1100
+++ ./drivers/md/md.c	2006-03-17 11:48:59.000000000 +1100
@@ -2242,7 +2242,14 @@ action_store(mddev_t *mddev, const char 
 		return -EBUSY;
 	else if (cmd_match(page, "resync") || cmd_match(page, "recover"))
 		set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
-	else {
+	else if (cmd_match(page, "reshape")) {
+		int err;
+		if (mddev->pers->start_reshape == NULL)
+			return -EINVAL;
+		err = mddev->pers->start_reshape(mddev);
+		if (err)
+			return err;
+	} else {
 		if (cmd_match(page, "check"))
 			set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
 		else if (cmd_match(page, "repair"))
-
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