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Date: Tue, 12 Nov 2019 16:59:19 +0530
From: "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
To: Dan Williams <dan.j.williams@...el.com>, linux-nvdimm@...ts.01.org
Cc: peterz@...radead.org, dave.hansen@...ux.intel.com,
linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 02/16] libnvdimm: Move region attribute group definition
Dan Williams <dan.j.williams@...el.com> writes:
> In preparation for moving region attributes from device attribute groups
> to the region device-type, reorder the declaration so that it can be
> referenced by the device-type definition without forward declarations.
> No functional changes are intended to result from this change.
>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@...ux.ibm.com>
> Cc: Ira Weiny <ira.weiny@...el.com>
> Cc: Vishal Verma <vishal.l.verma@...el.com>
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>
> ---
> drivers/nvdimm/region_devs.c | 208 +++++++++++++++++++++---------------------
> 1 file changed, 104 insertions(+), 104 deletions(-)
>
> diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
> index ef423ba1a711..e89f2eb3678c 100644
> --- a/drivers/nvdimm/region_devs.c
> +++ b/drivers/nvdimm/region_devs.c
> @@ -140,36 +140,6 @@ static void nd_region_release(struct device *dev)
> kfree(nd_region);
> }
>
> -static struct device_type nd_blk_device_type = {
> - .name = "nd_blk",
> - .release = nd_region_release,
> -};
> -
> -static struct device_type nd_pmem_device_type = {
> - .name = "nd_pmem",
> - .release = nd_region_release,
> -};
> -
> -static struct device_type nd_volatile_device_type = {
> - .name = "nd_volatile",
> - .release = nd_region_release,
> -};
> -
> -bool is_nd_pmem(struct device *dev)
> -{
> - return dev ? dev->type == &nd_pmem_device_type : false;
> -}
> -
> -bool is_nd_blk(struct device *dev)
> -{
> - return dev ? dev->type == &nd_blk_device_type : false;
> -}
> -
> -bool is_nd_volatile(struct device *dev)
> -{
> - return dev ? dev->type == &nd_volatile_device_type : false;
> -}
> -
> struct nd_region *to_nd_region(struct device *dev)
> {
> struct nd_region *nd_region = container_of(dev, struct nd_region, dev);
> @@ -674,80 +644,6 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n)
> return 0;
> }
>
> -struct attribute_group nd_region_attribute_group = {
> - .attrs = nd_region_attributes,
> - .is_visible = region_visible,
> -};
> -EXPORT_SYMBOL_GPL(nd_region_attribute_group);
> -
> -u64 nd_region_interleave_set_cookie(struct nd_region *nd_region,
> - struct nd_namespace_index *nsindex)
> -{
> - struct nd_interleave_set *nd_set = nd_region->nd_set;
> -
> - if (!nd_set)
> - return 0;
> -
> - if (nsindex && __le16_to_cpu(nsindex->major) == 1
> - && __le16_to_cpu(nsindex->minor) == 1)
> - return nd_set->cookie1;
> - return nd_set->cookie2;
> -}
> -
> -u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region)
> -{
> - struct nd_interleave_set *nd_set = nd_region->nd_set;
> -
> - if (nd_set)
> - return nd_set->altcookie;
> - return 0;
> -}
> -
> -void nd_mapping_free_labels(struct nd_mapping *nd_mapping)
> -{
> - struct nd_label_ent *label_ent, *e;
> -
> - lockdep_assert_held(&nd_mapping->lock);
> - list_for_each_entry_safe(label_ent, e, &nd_mapping->labels, list) {
> - list_del(&label_ent->list);
> - kfree(label_ent);
> - }
> -}
> -
> -/*
> - * When a namespace is activated create new seeds for the next
> - * namespace, or namespace-personality to be configured.
> - */
> -void nd_region_advance_seeds(struct nd_region *nd_region, struct device *dev)
> -{
> - nvdimm_bus_lock(dev);
> - if (nd_region->ns_seed == dev) {
> - nd_region_create_ns_seed(nd_region);
> - } else if (is_nd_btt(dev)) {
> - struct nd_btt *nd_btt = to_nd_btt(dev);
> -
> - if (nd_region->btt_seed == dev)
> - nd_region_create_btt_seed(nd_region);
> - if (nd_region->ns_seed == &nd_btt->ndns->dev)
> - nd_region_create_ns_seed(nd_region);
> - } else if (is_nd_pfn(dev)) {
> - struct nd_pfn *nd_pfn = to_nd_pfn(dev);
> -
> - if (nd_region->pfn_seed == dev)
> - nd_region_create_pfn_seed(nd_region);
> - if (nd_region->ns_seed == &nd_pfn->ndns->dev)
> - nd_region_create_ns_seed(nd_region);
> - } else if (is_nd_dax(dev)) {
> - struct nd_dax *nd_dax = to_nd_dax(dev);
> -
> - if (nd_region->dax_seed == dev)
> - nd_region_create_dax_seed(nd_region);
> - if (nd_region->ns_seed == &nd_dax->nd_pfn.ndns->dev)
> - nd_region_create_ns_seed(nd_region);
> - }
> - nvdimm_bus_unlock(dev);
> -}
> -
> static ssize_t mappingN(struct device *dev, char *buf, int n)
> {
> struct nd_region *nd_region = to_nd_region(dev);
> @@ -861,6 +757,110 @@ struct attribute_group nd_mapping_attribute_group = {
> };
> EXPORT_SYMBOL_GPL(nd_mapping_attribute_group);
>
> +struct attribute_group nd_region_attribute_group = {
> + .attrs = nd_region_attributes,
> + .is_visible = region_visible,
> +};
> +EXPORT_SYMBOL_GPL(nd_region_attribute_group);
> +
> +static struct device_type nd_blk_device_type = {
> + .name = "nd_blk",
> + .release = nd_region_release,
> +};
> +
> +static struct device_type nd_pmem_device_type = {
> + .name = "nd_pmem",
> + .release = nd_region_release,
> +};
> +
> +static struct device_type nd_volatile_device_type = {
> + .name = "nd_volatile",
> + .release = nd_region_release,
> +};
> +
> +bool is_nd_pmem(struct device *dev)
> +{
> + return dev ? dev->type == &nd_pmem_device_type : false;
> +}
> +
> +bool is_nd_blk(struct device *dev)
> +{
> + return dev ? dev->type == &nd_blk_device_type : false;
> +}
> +
> +bool is_nd_volatile(struct device *dev)
> +{
> + return dev ? dev->type == &nd_volatile_device_type : false;
> +}
> +
> +u64 nd_region_interleave_set_cookie(struct nd_region *nd_region,
> + struct nd_namespace_index *nsindex)
> +{
> + struct nd_interleave_set *nd_set = nd_region->nd_set;
> +
> + if (!nd_set)
> + return 0;
> +
> + if (nsindex && __le16_to_cpu(nsindex->major) == 1
> + && __le16_to_cpu(nsindex->minor) == 1)
> + return nd_set->cookie1;
> + return nd_set->cookie2;
> +}
> +
> +u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region)
> +{
> + struct nd_interleave_set *nd_set = nd_region->nd_set;
> +
> + if (nd_set)
> + return nd_set->altcookie;
> + return 0;
> +}
> +
> +void nd_mapping_free_labels(struct nd_mapping *nd_mapping)
> +{
> + struct nd_label_ent *label_ent, *e;
> +
> + lockdep_assert_held(&nd_mapping->lock);
> + list_for_each_entry_safe(label_ent, e, &nd_mapping->labels, list) {
> + list_del(&label_ent->list);
> + kfree(label_ent);
> + }
> +}
> +
> +/*
> + * When a namespace is activated create new seeds for the next
> + * namespace, or namespace-personality to be configured.
> + */
> +void nd_region_advance_seeds(struct nd_region *nd_region, struct device *dev)
> +{
> + nvdimm_bus_lock(dev);
> + if (nd_region->ns_seed == dev) {
> + nd_region_create_ns_seed(nd_region);
> + } else if (is_nd_btt(dev)) {
> + struct nd_btt *nd_btt = to_nd_btt(dev);
> +
> + if (nd_region->btt_seed == dev)
> + nd_region_create_btt_seed(nd_region);
> + if (nd_region->ns_seed == &nd_btt->ndns->dev)
> + nd_region_create_ns_seed(nd_region);
> + } else if (is_nd_pfn(dev)) {
> + struct nd_pfn *nd_pfn = to_nd_pfn(dev);
> +
> + if (nd_region->pfn_seed == dev)
> + nd_region_create_pfn_seed(nd_region);
> + if (nd_region->ns_seed == &nd_pfn->ndns->dev)
> + nd_region_create_ns_seed(nd_region);
> + } else if (is_nd_dax(dev)) {
> + struct nd_dax *nd_dax = to_nd_dax(dev);
> +
> + if (nd_region->dax_seed == dev)
> + nd_region_create_dax_seed(nd_region);
> + if (nd_region->ns_seed == &nd_dax->nd_pfn.ndns->dev)
> + nd_region_create_ns_seed(nd_region);
> + }
> + nvdimm_bus_unlock(dev);
> +}
> +
> int nd_blk_region_init(struct nd_region *nd_region)
> {
> struct device *dev = &nd_region->dev;
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