The patch titled
From: Dan Williams <dan.j.williams@xxxxxxxxx>
has been added to the -mm tree. Its filename is
mm-cleanup-ifdef-guards-for-vmem_altmap.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-cleanup-ifdef-guards-for-vmem_altmap.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-cleanup-ifdef-guards-for-vmem_altmap.patch
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------------------------------------------------------
From: Dan Williams <dan.j.williams@xxxxxxxxx>
Subject: mm: cleanup ifdef guards for vmem_altmap
Now that ZONE_DEVICE depends on SPARSEMEM_VMEMMAP we can simplify some
ifdef guards to just ZONE_DEVICE.
Link: http://lkml.kernel.org/r/146687646788.39261.8020536391978771940.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reported-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Eric Sandeen <sandeen@xxxxxxxxxx>
Cc: Jeff Moyer <jmoyer@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memremap.h | 2 +-
kernel/memremap.c | 8 --------
2 files changed, 1 insertion(+), 9 deletions(-)
diff -puN include/linux/memremap.h~mm-cleanup-ifdef-guards-for-vmem_altmap include/linux/memremap.h
--- a/include/linux/memremap.h~mm-cleanup-ifdef-guards-for-vmem_altmap
+++ a/include/linux/memremap.h
@@ -26,7 +26,7 @@ struct vmem_altmap {
unsigned long vmem_altmap_offset(struct vmem_altmap *altmap);
void vmem_altmap_free(struct vmem_altmap *altmap, unsigned long nr_pfns);
-#if defined(CONFIG_SPARSEMEM_VMEMMAP) && defined(CONFIG_ZONE_DEVICE)
+#ifdef CONFIG_ZONE_DEVICE
struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start);
#else
static inline struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start)
diff -puN kernel/memremap.c~mm-cleanup-ifdef-guards-for-vmem_altmap kernel/memremap.c
--- a/kernel/memremap.c~mm-cleanup-ifdef-guards-for-vmem_altmap
+++ a/kernel/memremap.c
@@ -308,12 +308,6 @@ void *devm_memremap_pages(struct device
if (is_ram == REGION_INTERSECTS)
return __va(res->start);
- if (altmap && !IS_ENABLED(CONFIG_SPARSEMEM_VMEMMAP)) {
- dev_err(dev, "%s: altmap requires CONFIG_SPARSEMEM_VMEMMAP=y\n",
- __func__);
- return ERR_PTR(-ENXIO);
- }
-
if (!ref)
return ERR_PTR(-EINVAL);
@@ -401,7 +395,6 @@ void vmem_altmap_free(struct vmem_altmap
altmap->alloc -= nr_pfns;
}
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start)
{
/*
@@ -427,5 +420,4 @@ struct vmem_altmap *to_vmem_altmap(unsig
return pgmap ? pgmap->altmap : NULL;
}
-#endif /* CONFIG_SPARSEMEM_VMEMMAP */
#endif /* CONFIG_ZONE_DEVICE */
_
Patches currently in -mm which might be from dan.j.williams@xxxxxxxxx are
mm-config_zone_device-stop-depending-on-config_expert.patch
mm-cleanup-ifdef-guards-for-vmem_altmap.patch
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