diff options
Diffstat (limited to 'drivers/nvdimm')
-rw-r--r-- | drivers/nvdimm/blk.c | 3 | ||||
-rw-r--r-- | drivers/nvdimm/btt.c | 3 | ||||
-rw-r--r-- | drivers/nvdimm/bus.c | 2 | ||||
-rw-r--r-- | drivers/nvdimm/pfn_devs.c | 51 | ||||
-rw-r--r-- | drivers/nvdimm/pmem.c | 4 |
5 files changed, 45 insertions, 18 deletions
diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c index 495e06d9f7e7..7e262ef06ede 100644 --- a/drivers/nvdimm/blk.c +++ b/drivers/nvdimm/blk.c @@ -287,14 +287,13 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk) return -ENOMEM; } - disk->driverfs_dev = dev; disk->first_minor = 0; disk->fops = &nd_blk_fops; disk->queue = q; disk->flags = GENHD_FL_EXT_DEVT; nvdimm_namespace_disk_name(&nsblk->common, disk->disk_name); set_capacity(disk, 0); - add_disk(disk); + device_add_disk(dev, disk); if (nsblk_meta_size(nsblk)) { int rc = nd_integrity_init(disk, nsblk_meta_size(nsblk)); diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 68a7c3c1eed9..9dce03f420eb 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1243,7 +1243,6 @@ static int btt_blk_init(struct btt *btt) } nvdimm_namespace_disk_name(ndns, btt->btt_disk->disk_name); - btt->btt_disk->driverfs_dev = &btt->nd_btt->dev; btt->btt_disk->first_minor = 0; btt->btt_disk->fops = &btt_fops; btt->btt_disk->private_data = btt; @@ -1258,7 +1257,7 @@ static int btt_blk_init(struct btt *btt) btt->btt_queue->queuedata = btt; set_capacity(btt->btt_disk, 0); - add_disk(btt->btt_disk); + 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)); diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index f085f8bceae8..5e4e5c772ea5 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -312,7 +312,7 @@ EXPORT_SYMBOL(__nd_driver_register); int nvdimm_revalidate_disk(struct gendisk *disk) { - struct device *dev = disk->driverfs_dev; + struct device *dev = disk_to_dev(disk)->parent; struct nd_region *nd_region = to_nd_region(dev->parent); const char *pol = nd_region->ro ? "only" : "write"; diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index f7718ec685fa..cea8350fbc7e 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -344,6 +344,8 @@ struct device *nd_pfn_create(struct nd_region *nd_region) int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) { u64 checksum, offset; + unsigned long align; + enum nd_pfn_mode mode; struct nd_namespace_io *nsio; struct nd_pfn_sb *pfn_sb = nd_pfn->pfn_sb; struct nd_namespace_common *ndns = nd_pfn->ndns; @@ -386,22 +388,50 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) return -ENXIO; } + align = le32_to_cpu(pfn_sb->align); + offset = le64_to_cpu(pfn_sb->dataoff); + if (align == 0) + align = 1UL << ilog2(offset); + mode = le32_to_cpu(pfn_sb->mode); + if (!nd_pfn->uuid) { - /* from probe we allocate */ + /* + * When probing a namepace via nd_pfn_probe() the uuid + * is NULL (see: nd_pfn_devinit()) we init settings from + * pfn_sb + */ nd_pfn->uuid = kmemdup(pfn_sb->uuid, 16, GFP_KERNEL); if (!nd_pfn->uuid) return -ENOMEM; + nd_pfn->align = align; + nd_pfn->mode = mode; } else { - /* from init we validate */ + /* + * When probing a pfn / dax instance we validate the + * live settings against the pfn_sb + */ if (memcmp(nd_pfn->uuid, pfn_sb->uuid, 16) != 0) return -ENODEV; + + /* + * If the uuid validates, but other settings mismatch + * return EINVAL because userspace has managed to change + * the configuration without specifying new + * identification. + */ + if (nd_pfn->align != align || nd_pfn->mode != mode) { + dev_err(&nd_pfn->dev, + "init failed, settings mismatch\n"); + dev_dbg(&nd_pfn->dev, "align: %lx:%lx mode: %d:%d\n", + nd_pfn->align, align, nd_pfn->mode, + mode); + return -EINVAL; + } } - if (nd_pfn->align == 0) - nd_pfn->align = le32_to_cpu(pfn_sb->align); - if (nd_pfn->align > nvdimm_namespace_capacity(ndns)) { + if (align > nvdimm_namespace_capacity(ndns)) { dev_err(&nd_pfn->dev, "alignment: %lx exceeds capacity %llx\n", - nd_pfn->align, nvdimm_namespace_capacity(ndns)); + align, nvdimm_namespace_capacity(ndns)); return -EINVAL; } @@ -411,7 +441,6 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) * namespace has changed since the pfn superblock was * established. */ - offset = le64_to_cpu(pfn_sb->dataoff); nsio = to_nd_namespace_io(&ndns->dev); if (offset >= resource_size(&nsio->res)) { dev_err(&nd_pfn->dev, "pfn array size exceeds capacity of %s\n", @@ -419,10 +448,11 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) return -EBUSY; } - if ((nd_pfn->align && !IS_ALIGNED(offset, nd_pfn->align)) + if ((align && !IS_ALIGNED(offset, align)) || !IS_ALIGNED(offset, PAGE_SIZE)) { - dev_err(&nd_pfn->dev, "bad offset: %#llx dax disabled\n", - offset); + dev_err(&nd_pfn->dev, + "bad offset: %#llx dax disabled align: %#lx\n", + offset, align); return -ENXIO; } @@ -502,7 +532,6 @@ static struct vmem_altmap *__nvdimm_setup_pfn(struct nd_pfn *nd_pfn, res->start += start_pad; res->end -= end_trunc; - nd_pfn->mode = le32_to_cpu(nd_pfn->pfn_sb->mode); if (nd_pfn->mode == PFN_MODE_RAM) { if (offset < SZ_8K) return ERR_PTR(-EINVAL); diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 608fc4464574..36cb39047d5b 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -283,6 +283,7 @@ static int pmem_attach_disk(struct device *dev, blk_queue_max_hw_sectors(q, UINT_MAX); blk_queue_bounce_limit(q, BLK_BOUNCE_ANY); queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q); + queue_flag_set_unlocked(QUEUE_FLAG_DAX, q); q->queuedata = pmem; disk = alloc_disk_node(0, nid); @@ -297,14 +298,13 @@ static int pmem_attach_disk(struct device *dev, disk->queue = q; disk->flags = GENHD_FL_EXT_DEVT; nvdimm_namespace_disk_name(ndns, disk->disk_name); - disk->driverfs_dev = dev; set_capacity(disk, (pmem->size - pmem->pfn_pad - pmem->data_offset) / 512); if (devm_init_badblocks(dev, &pmem->bb)) return -ENOMEM; nvdimm_badblocks_populate(to_nd_region(dev->parent), &pmem->bb, res); disk->bb = &pmem->bb; - add_disk(disk); + device_add_disk(dev, disk); revalidate_disk(disk); return 0; |