md: fix raid10 takeover: use new_layout for setup_conf

Use mddev->new_layout in setup_conf.
Also use new_chunk, and don't set ->degraded in takeover().  That
gets set in run()

Signed-off-by: Maciej Trela <maciej.trela@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 1bab355..42e64e4 100644 (file)
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2161,22 +2161,22 @@ static conf_t *setup_conf(mddev_t *mddev)
        sector_t stride, size;
        int err = -EINVAL;
 
-       if (mddev->chunk_sectors < (PAGE_SIZE >> 9) ||
-           !is_power_of_2(mddev->chunk_sectors)) {
+       if (mddev->new_chunk_sectors < (PAGE_SIZE >> 9) ||
+           !is_power_of_2(mddev->new_chunk_sectors)) {
                printk(KERN_ERR "md/raid10:%s: chunk size must be "
                       "at least PAGE_SIZE(%ld) and be a power of 2.\n",
                       mdname(mddev), PAGE_SIZE);
                goto out;
        }
 
-       nc = mddev->layout & 255;
-       fc = (mddev->layout >> 8) & 255;
-       fo = mddev->layout & (1<<16);
+       nc = mddev->new_layout & 255;
+       fc = (mddev->new_layout >> 8) & 255;
+       fo = mddev->new_layout & (1<<16);
 
        if ((nc*fc) <2 || (nc*fc) > mddev->raid_disks ||
-           (mddev->layout >> 17)) {
+           (mddev->new_layout >> 17)) {
                printk(KERN_ERR "md/raid10:%s: unsupported raid10 layout: 0x%8x\n",
-                      mdname(mddev), mddev->layout);
+                      mdname(mddev), mddev->new_layout);
                goto out;
        }
 
@@ -2435,7 +2435,6 @@ static void *raid10_takeover_raid0(mddev_t *mddev)
        mddev->new_layout = (1<<8) + 2;
        mddev->new_chunk_sectors = mddev->chunk_sectors;
        mddev->delta_disks = mddev->raid_disks;
-       mddev->degraded = mddev->raid_disks;
        mddev->raid_disks *= 2;
        /* make sure it will be not marked as dirty */
        mddev->recovery_cp = MaxSector;