Patch "libnvdimm, {btt, blk}: do integrity setup before add_disk()" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

libnvdimm, {btt, blk}: do integrity setup before add_disk()

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
libnvdimm-btt-blk-do-integrity-setup-before-add_disk.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Vishal Verma <[email protected]>
Date: Mon, 5 Mar 2018 16:56:13 -0700
Subject: libnvdimm, {btt, blk}: do integrity setup before add_disk()

From: Vishal Verma <[email protected]>

commit 3ffb0ba9b567a8efb9a04ed3d1ec15ff333ada22 upstream.

Prior to 25520d55cdb6 ("block: Inline blk_integrity in struct gendisk") we needed to temporarily add a zero-capacity disk before registering for blk-integrity. But adding a zero-capacity disk caused the partition table scanning to bail early, and this resulted in partitions not coming up after a probe of the BTT or blk namespaces.

We can now register for integrity before the disk has been added, and this fixes the rescan problems.

---
 drivers/nvdimm/blk.c |    3 +--
 drivers/nvdimm/btt.c |    3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

@@ -278,8 +278,6 @@ static int nsblk_attach_disk(struct nd_n
 	disk->queue		= q;
 	disk->flags		= GENHD_FL_EXT_DEVT;
 	nvdimm_namespace_disk_name(&nsblk->common, disk->disk_name);
-	set_capacity(disk, 0);
-	device_add_disk(dev, disk);
 
 	if (devm_add_action_or_reset(dev, nd_blk_release_disk, disk))
 		return -ENOMEM;

@@ -292,6 +290,7 @@ static int nsblk_attach_disk(struct nd_n
 	}
 
 	set_capacity(disk, available_disk_size >> SECTOR_SHIFT);
+	device_add_disk(dev, disk);
 	revalidate_disk(disk);
 	return 0;
 }

@@ -1542,8 +1542,6 @@ static int btt_blk_init(struct btt *btt)
 	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, btt->btt_queue);
 	btt->btt_queue->queuedata = btt;
 
-	set_capacity(btt->btt_disk, 0);
-	device_add_disk(&btt->nd_btt->dev, btt->btt_disk);
 	if (btt_meta_size(btt)) {
 		int rc = nd_integrity_init(btt->btt_disk, btt_meta_size(btt));
 

@@ -1555,6 +1553,7 @@ static int btt_blk_init(struct btt *btt)
 		}
 	}
 	set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9);
+	device_add_disk(&btt->nd_btt->dev, btt->btt_disk);
 	btt->nd_btt->size = btt->nlba * (u64)btt->sector_size;
 	revalidate_disk(btt->btt_disk);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/libnvdimm-btt-blk-do-integrity-setup-before-add_disk.patch