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libnvdimm: Remove unused nd_region_conflict

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nd_region_conflict() has been unused since 2019's
commit a3619190d6 ("libnvdimm/pfn: stop padding pmem namespaces to
section alignment")

Remove it, and the region_confict() helper it uses, and the associated
struct conflict_context.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://patch.msgid.link/20250220004538.84585-2-linux@treblig.org
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
This commit is contained in:
Dr. David Alan Gilbert 2025-02-20 00:45:37 +00:00 committed by Ira Weiny
parent 2ff0e408db
commit 878a8e1ecb
2 changed files with 0 additions and 43 deletions
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2
drivers/nvdimm/nd-core.h
View File

@ -127,8 +127,6 @@ resource_size_t nd_region_allocatable_dpa(struct nd_region *nd_region);
resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
struct nd_mapping *nd_mapping);
resource_size_t nd_region_available_dpa(struct nd_region *nd_region);
int nd_region_conflict(struct nd_region *nd_region, resource_size_t start,
resource_size_t size);
resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
struct nd_label_id *label_id);
int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd);

41
drivers/nvdimm/region_devs.c
View File

@ -1229,45 +1229,4 @@ bool is_nvdimm_sync(struct nd_region *nd_region)
}
EXPORT_SYMBOL_GPL(is_nvdimm_sync);
struct conflict_context {
struct nd_region *nd_region;
resource_size_t start, size;
};
static int region_conflict(struct device *dev, void *data)
{
struct nd_region *nd_region;
struct conflict_context *ctx = data;
resource_size_t res_end, region_end, region_start;
if (!is_memory(dev))
return 0;
nd_region = to_nd_region(dev);
if (nd_region == ctx->nd_region)
return 0;
res_end = ctx->start + ctx->size;
region_start = nd_region->ndr_start;
region_end = region_start + nd_region->ndr_size;
if (ctx->start >= region_start && ctx->start < region_end)
return -EBUSY;
if (res_end > region_start && res_end <= region_end)
return -EBUSY;
return 0;
}
int nd_region_conflict(struct nd_region *nd_region, resource_size_t start,
resource_size_t size)
{
struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(&nd_region->dev);
struct conflict_context ctx = {
.nd_region = nd_region,
.start = start,
.size = size,
};
return device_for_each_child(&nvdimm_bus->dev, &ctx, region_conflict);
}
MODULE_IMPORT_NS("DEVMEM");