[PATCH] md: remove unused static md_wq workqueue

The md_wq workqueue is defined as static and initialized in md_init(),
but it is not used anywhere within md.c.

All asynchronous and deferred work in this file is handled via
md_misc_wq or dedicated md threads.

Fixes: b75197e86e6d3 ("md: Remove flush handling")
Signed-off-by: Abd-Alrhman Masalkhi <[email protected]>
---
 drivers/md/md.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index ac71640ff3a8..64bf08f16c0e 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -84,7 +84,6 @@ static DEFINE_XARRAY(md_submodule);
 static const struct kobj_type md_ktype;
 
 static DECLARE_WAIT_QUEUE_HEAD(resync_wait);
-static struct workqueue_struct *md_wq;
 
 /*
  * This workqueue is used for sync_work to register new sync_thread, and for
@@ -10495,10 +10494,6 @@ static int __init md_init(void)
 		goto err_bitmap;
 
 	ret = -ENOMEM;
-	md_wq = alloc_workqueue("md", WQ_MEM_RECLAIM, 0);
-	if (!md_wq)
-		goto err_wq;
-
 	md_misc_wq = alloc_workqueue("md_misc", 0, 0);
 	if (!md_misc_wq)
 		goto err_misc_wq;
@@ -10523,8 +10518,6 @@ static int __init md_init(void)
 err_md:
 	destroy_workqueue(md_misc_wq);
 err_misc_wq:
-	destroy_workqueue(md_wq);
-err_wq:
 	md_llbitmap_exit();
 err_bitmap:
 	md_bitmap_exit();
@@ -10833,7 +10826,6 @@ static __exit void md_exit(void)
 	spin_unlock(&all_mddevs_lock);
 
 	destroy_workqueue(md_misc_wq);
-	destroy_workqueue(md_wq);
 	md_bitmap_exit();
 }
 
-- 
2.51.0