diff options
Diffstat (limited to 'drivers/nvdimm/namespace_devs.c')
| -rw-r--r-- | drivers/nvdimm/namespace_devs.c | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index a518cb1b59d4..1b481a5fb966 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -52,17 +52,17 @@ static void namespace_blk_release(struct device *dev) kfree(nsblk); } -static struct device_type namespace_io_device_type = { +static const struct device_type namespace_io_device_type = { .name = "nd_namespace_io", .release = namespace_io_release, }; -static struct device_type namespace_pmem_device_type = { +static const struct device_type namespace_pmem_device_type = { .name = "nd_namespace_pmem", .release = namespace_pmem_release, }; -static struct device_type namespace_blk_device_type = { +static const struct device_type namespace_blk_device_type = { .name = "nd_namespace_blk", .release = namespace_blk_release, }; @@ -962,8 +962,8 @@ static ssize_t __size_store(struct device *dev, unsigned long long val) struct nvdimm_drvdata *ndd; struct nd_label_id label_id; u32 flags = 0, remainder; + int rc, i, id = -1; u8 *uuid = NULL; - int rc, i; if (dev->driver || ndns->claim) return -EBUSY; @@ -972,11 +972,13 @@ static ssize_t __size_store(struct device *dev, unsigned long long val) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev); uuid = nspm->uuid; + id = nspm->id; } else if (is_namespace_blk(dev)) { struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev); uuid = nsblk->uuid; flags = NSLABEL_FLAG_LOCAL; + id = nsblk->id; } /* @@ -1039,10 +1041,11 @@ static ssize_t __size_store(struct device *dev, unsigned long long val) /* * Try to delete the namespace if we deleted all of its - * allocation, this is not the seed device for the region, and - * it is not actively claimed by a btt instance. + * allocation, this is not the seed or 0th device for the + * region, and it is not actively claimed by a btt, pfn, or dax + * instance. */ - if (val == 0 && nd_region->ns_seed != dev && !ndns->claim) + if (val == 0 && id != 0 && nd_region->ns_seed != dev && !ndns->claim) nd_device_unregister(dev, ND_ASYNC); return rc; @@ -1697,6 +1700,7 @@ static int select_pmem_id(struct nd_region *nd_region, u8 *pmem_id) struct device *create_namespace_pmem(struct nd_region *nd_region, struct nd_namespace_label *nd_label) { + u64 altcookie = nd_region_interleave_set_altcookie(nd_region); u64 cookie = nd_region_interleave_set_cookie(nd_region); struct nd_label_ent *label_ent; struct nd_namespace_pmem *nspm; @@ -1715,7 +1719,11 @@ struct device *create_namespace_pmem(struct nd_region *nd_region, if (__le64_to_cpu(nd_label->isetcookie) != cookie) { dev_dbg(&nd_region->dev, "invalid cookie in label: %pUb\n", nd_label->uuid); - return ERR_PTR(-EAGAIN); + if (__le64_to_cpu(nd_label->isetcookie) != altcookie) + return ERR_PTR(-EAGAIN); + + dev_dbg(&nd_region->dev, "valid altcookie in label: %pUb\n", + nd_label->uuid); } nspm = kzalloc(sizeof(*nspm), GFP_KERNEL); @@ -1730,9 +1738,14 @@ struct device *create_namespace_pmem(struct nd_region *nd_region, res->name = dev_name(&nd_region->dev); res->flags = IORESOURCE_MEM; - for (i = 0; i < nd_region->ndr_mappings; i++) - if (!has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i)) - break; + for (i = 0; i < nd_region->ndr_mappings; i++) { + if (has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i)) + continue; + if (has_uuid_at_pos(nd_region, nd_label->uuid, altcookie, i)) + continue; + break; + } + if (i < nd_region->ndr_mappings) { struct nvdimm_drvdata *ndd = to_ndd(&nd_region->mapping[i]); |
