libnvdimm, {btt, blk}: do integrity setup before add_disk()
authorVishal Verma <vishal.l.verma@intel.com>
Mon, 5 Mar 2018 23:56:13 +0000 (16:56 -0700)
committerDan Williams <dan.j.williams@intel.com>
Wed, 7 Mar 2018 21:50:09 +0000 (13:50 -0800)
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.

Fixes: 25520d55cdb6 ("block: Inline blk_integrity in struct gendisk")
Reported-by: Dariusz Dokupil <dariusz.dokupil@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
drivers/nvdimm/blk.c
drivers/nvdimm/btt.c

index 345acca576b3c077b68e339437dd2e54ae76384a..1bd7b3734751c36820bd8f3a3cc107a1cac0b8ef 100644 (file)
@@ -278,8 +278,6 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk)
        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_namespace_blk *nsblk)
        }
 
        set_capacity(disk, available_disk_size >> SECTOR_SHIFT);
+       device_add_disk(dev, disk);
        revalidate_disk(disk);
        return 0;
 }
index 2ef544f10ec8a3b2016bac8e9bc38475113eb5ef..4b95ac513de2131e480445bae0f7b6b319b5bf7f 100644 (file)
@@ -1545,8 +1545,6 @@ 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));
 
@@ -1558,6 +1556,7 @@ 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);