[PATCH 3/5] memremap: remove the dev field in struct dev_pagemap

Christoph Hellwig
2019-08-11T08:15:33Z

The dev field in struct dev_pagemap is only used to print dev_name in
two places, which are at best nice to have. Just remove the field
and thus the name in those two messages.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
include/linux/memremap.h | 1 -
mm/memremap.c | 6 +-----
mm/page_alloc.c | 2 +-
3 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index f8a5b2a19945..8f0013e18e14 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -109,7 +109,6 @@ struct dev_pagemap {
struct percpu_ref *ref;
struct percpu_ref internal_ref;
struct completion done;
- struct device *dev;
enum memory_type type;
unsigned int flags;
u64 pci_p2pdma_bus_offset;
diff --git a/mm/memremap.c b/mm/memremap.c
index 6ee03a816d67..600a14cbe663 100644
--- a/mm/memremap.c
+++ b/mm/memremap.c
@@ -96,7 +96,6 @@ static void dev_pagemap_cleanup(struct dev_pagemap *pgmap)
static void devm_memremap_pages_release(void *data)
{
struct dev_pagemap *pgmap = data;
- struct device *dev = pgmap->dev;
struct resource *res = &pgmap->res;
unsigned long pfn;
int nid;
@@ -123,8 +122,7 @@ static void devm_memremap_pages_release(void *data)

untrack_pfn(NULL, PHYS_PFN(res->start), resource_size(res));
pgmap_array_delete(res);
- dev_WARN_ONCE(dev, pgmap->altmap.alloc,
- "%s: failed to free all reserved pages\n", __func__);
+ WARN_ONCE(pgmap->altmap.alloc, "failed to free all reserved pages\n");
}

static void dev_pagemap_percpu_release(struct percpu_ref *ref)
@@ -245,8 +243,6 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
goto err_array;
}

- pgmap->dev = dev;
-
error = xa_err(xa_store_range(&pgmap_array, PHYS_PFN(res->start),
PHYS_PFN(res->end), pgmap, GFP_KERNEL));
if (error)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 272c6de1bf4e..b39baa2b1faf 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5982,7 +5982,7 @@ void __ref memmap_init_zone_device(struct zone *zone,
}
}

- pr_info("%s initialised, %lu pages in %ums\n", dev_name(pgmap->dev),
+ pr_info("%s initialised %lu pages in %ums\n", __func__,
size, jiffies_to_msecs(jiffies - start));
}

--
2.20.1