Btrfs: remove unused wait in btrfs_stripe_hash
In fact nobody is waiting on @wait's waitqueue, it can be safely
removed.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 09b72b6..1a462ab 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -679,7 +679,6 @@
/* used by the raid56 code to lock stripes for read/modify/write */
struct btrfs_stripe_hash {
struct list_head hash_list;
- wait_queue_head_t wait;
spinlock_t lock;
};
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 3940906..9fa45e0 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -231,7 +231,6 @@
cur = h + i;
INIT_LIST_HEAD(&cur->hash_list);
spin_lock_init(&cur->lock);
- init_waitqueue_head(&cur->wait);
}
x = cmpxchg(&info->stripe_hash_table, NULL, table);
@@ -815,15 +814,6 @@
}
goto done_nolock;
- /*
- * The barrier for this waitqueue_active is not needed,
- * we're protected by h->lock and can't miss a wakeup.
- */
- } else if (waitqueue_active(&h->wait)) {
- spin_unlock(&rbio->bio_list_lock);
- spin_unlock_irqrestore(&h->lock, flags);
- wake_up(&h->wait);
- goto done_nolock;
}
}
done: