[PATCH 1/2] libnvdimm: Remove unused nd_region_conflict
From: linux
Date: Wed Feb 19 2025 - 19:46:10 EST
From: "Dr. David Alan Gilbert" <linux@xxxxxxxxxxx>
nd_region_conflict() has been unused since 2019's
commit a3619190d62e ("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@xxxxxxxxxxx>
---
drivers/nvdimm/nd-core.h | 2 --
drivers/nvdimm/region_devs.c | 41 ------------------------------------
2 files changed, 43 deletions(-)
diff --git a/drivers/nvdimm/nd-core.h b/drivers/nvdimm/nd-core.h
index 86976a9e8a15..2b37b7fc4fef 100644
--- a/drivers/nvdimm/nd-core.h
+++ b/drivers/nvdimm/nd-core.h
@@ -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);
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index 37417ce5ec7b..de1ee5ebc851 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -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");
--
2.48.1