block-6.0-2022-08-26

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Merge tag 'block-6.0-2022-08-26' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - MD pull request via Song:
      - Fix for clustered raid (Guoqing Jiang)
      - req_op fix (Bart Van Assche)
      - Fix race condition in raid recreate (David Sloan)

 - loop configuration overflow fix (Siddh)

 - Fix missing commit_rqs call for certain conditions (Yu)

* tag 'block-6.0-2022-08-26' of git://git.kernel.dk/linux-block:
  md: call __md_stop_writes in md_stop
  Revert "md-raid: destroy the bitmap after destroying the thread"
  md: Flush workqueue md_rdev_misc_wq in md_alloc()
  md/raid10: Fix the data type of an r10_sync_page_io() argument
  loop: Check for overflow while configuring loop
  blk-mq: fix io hung due to missing commit_rqs

block/blk-mq.c

@@ -1931,7 +1931,8 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list,
 	/* If we didn't flush the entire list, we could have told the driver
 	 * there was more coming, but that turned out to be a lie.
 	 */
-	if ((!list_empty(list) || errors) && q->mq_ops->commit_rqs && queued)
+	if ((!list_empty(list) || errors || needs_resource ||
+	     ret == BLK_STS_DEV_RESOURCE) && q->mq_ops->commit_rqs && queued)
 		q->mq_ops->commit_rqs(hctx);
 	/*
 	 * Any items that need requeuing? Stuff them into hctx->dispatch,
@@ -2660,6 +2661,7 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
 		list_del_init(&rq->queuelist);
 		ret = blk_mq_request_issue_directly(rq, list_empty(list));
 		if (ret != BLK_STS_OK) {
+			errors++;
 			if (ret == BLK_STS_RESOURCE ||
 					ret == BLK_STS_DEV_RESOURCE) {
 				blk_mq_request_bypass_insert(rq, false,
@@ -2667,7 +2669,6 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
 				break;
 			}
 			blk_mq_end_request(rq, ret);
-			errors++;
 		} else
 			queued++;
 	}

drivers/block/loop.c

@@ -979,6 +979,11 @@ loop_set_status_from_info(struct loop_device *lo,
 
 	lo->lo_offset = info->lo_offset;
 	lo->lo_sizelimit = info->lo_sizelimit;
+
+	/* loff_t vars have been assigned __u64 */
+	if (lo->lo_offset < 0 || lo->lo_sizelimit < 0)
+		return -EOVERFLOW;
+
 	memcpy(lo->lo_file_name, info->lo_file_name, LO_NAME_SIZE);
 	lo->lo_file_name[LO_NAME_SIZE-1] = 0;
 	lo->lo_flags = info->lo_flags;

drivers/md/md.c

@@ -5620,6 +5620,7 @@ struct mddev *md_alloc(dev_t dev, char *name)
 	 * removed (mddev_delayed_delete).
 	 */
 	flush_workqueue(md_misc_wq);
+	flush_workqueue(md_rdev_misc_wq);
 
 	mutex_lock(&disks_mutex);
 	mddev = mddev_alloc(dev);
@@ -6238,11 +6239,11 @@ static void mddev_detach(struct mddev *mddev)
 static void __md_stop(struct mddev *mddev)
 {
 	struct md_personality *pers = mddev->pers;
+	md_bitmap_destroy(mddev);
 	mddev_detach(mddev);
 	/* Ensure ->event_work is done */
 	if (mddev->event_work.func)
 		flush_workqueue(md_misc_wq);
-	md_bitmap_destroy(mddev);
 	spin_lock(&mddev->lock);
 	mddev->pers = NULL;
 	spin_unlock(&mddev->lock);
@@ -6260,6 +6261,7 @@ void md_stop(struct mddev *mddev)
 	/* stop the array and free an attached data structures.
 	 * This is called from dm-raid
 	 */
+	__md_stop_writes(mddev);
 	__md_stop(mddev);
 	bioset_exit(&mddev->bio_set);
 	bioset_exit(&mddev->sync_set);

drivers/md/raid10.c

@@ -2639,18 +2639,18 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev)
 }
 
 static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector,
-			    int sectors, struct page *page, int rw)
+			    int sectors, struct page *page, enum req_op op)
 {
 	sector_t first_bad;
 	int bad_sectors;
 
 	if (is_badblock(rdev, sector, sectors, &first_bad, &bad_sectors)
-	    && (rw == READ || test_bit(WriteErrorSeen, &rdev->flags)))
+	    && (op == REQ_OP_READ || test_bit(WriteErrorSeen, &rdev->flags)))
 		return -1;
-	if (sync_page_io(rdev, sector, sectors << 9, page, rw, false))
+	if (sync_page_io(rdev, sector, sectors << 9, page, op, false))
 		/* success */
 		return 1;
-	if (rw == WRITE) {
+	if (op == REQ_OP_WRITE) {
 		set_bit(WriteErrorSeen, &rdev->flags);
 		if (!test_and_set_bit(WantReplacement, &rdev->flags))
 			set_bit(MD_RECOVERY_NEEDED,
@@ -2780,7 +2780,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
 			if (r10_sync_page_io(rdev,
 					     r10_bio->devs[sl].addr +
 					     sect,
-					     s, conf->tmppage, WRITE)
+					     s, conf->tmppage, REQ_OP_WRITE)
 			    == 0) {
 				/* Well, this device is dead */
 				pr_notice("md/raid10:%s: read correction write failed (%d sectors at %llu on %pg)\n",
@@ -2814,8 +2814,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
 			switch (r10_sync_page_io(rdev,
 					     r10_bio->devs[sl].addr +
 					     sect,
-					     s, conf->tmppage,
-						 READ)) {
+					     s, conf->tmppage, REQ_OP_READ)) {
 			case 0:
 				/* Well, this device is dead */
 				pr_notice("md/raid10:%s: unable to read back corrected sectors (%d sectors at %llu on %pg)\n",