md: Remove 'ready' field from mddev.

This field is always set in tandem with ->pers, and when it is tested
->pers is also tested.  So ->ready is not needed.

It was needed once, but code rearrangement and locking changes have
removed that needed.

Signed-off-by: NeilBrown <neilb@suse.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 43a140457e0c..0d1d822eeda5 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -250,8 +250,7 @@ static blk_qc_t md_make_request(struct request_queue *q, struct bio *bio)
 
         blk_queue_split(q, &bio, q->bio_split);
 
-        if (mddev == NULL || mddev->pers == NULL
-            || !mddev->ready) {
+        if (mddev == NULL || mddev->pers == NULL) {
                 bio_io_error(bio);
                 return BLK_QC_T_NONE;
         }
@@ -5298,7 +5297,6 @@ int md_run(struct mddev *mddev)
         smp_wmb();
         spin_lock(&mddev->lock);
         mddev->pers = pers;
-        mddev->ready = 1;
         spin_unlock(&mddev->lock);
         rdev_for_each(rdev, mddev)
                 if (rdev->raid_disk >= 0)
@@ -5498,7 +5496,6 @@ static void __md_stop(struct mddev *mddev)
         /* Ensure ->event_work is done */
         flush_workqueue(md_misc_wq);
         spin_lock(&mddev->lock);
-        mddev->ready = 0;
         mddev->pers = NULL;
         spin_unlock(&mddev->lock);
         pers->free(mddev, mddev->private);