The patch titled
Subject: mm/memory_hotplug.c: use PFN_UP / PFN_DOWN in walk_system_ram_range()
has been removed from the -mm tree. Its filename was
resource-use-pfn_up-pfn_down-in-walk_system_ram_range.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: David Hildenbrand <david@xxxxxxxxxx>
Subject: mm/memory_hotplug.c: use PFN_UP / PFN_DOWN in walk_system_ram_range()
Patch series "mm/memory_hotplug: online_pages() cleanups", v2.
Some cleanups (+ one fix for a special case) in the context of
online_pages().
This patch (of 5):
This makes it clearer that we will never call func() with duplicate PFNs
in case we have multiple sub-page memory resources. All unaligned parts
of PFNs are completely discarded.
Link: http://lkml.kernel.org/r/20190814154109.3448-2-david@xxxxxxxxxx
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Nadav Amit <namit@xxxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Arun KS <arunks@xxxxxxxxxxxxxx>
Cc: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/resource.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/kernel/resource.c~resource-use-pfn_up-pfn_down-in-walk_system_ram_range
+++ a/kernel/resource.c
@@ -487,8 +487,8 @@ int walk_system_ram_range(unsigned long
while (start < end &&
!find_next_iomem_res(start, end, flags, IORES_DESC_NONE,
false, &res)) {
- pfn = (res.start + PAGE_SIZE - 1) >> PAGE_SHIFT;
- end_pfn = (res.end + 1) >> PAGE_SHIFT;
+ pfn = PFN_UP(res.start);
+ end_pfn = PFN_DOWN(res.end + 1);
if (end_pfn > pfn)
ret = (*func)(pfn, end_pfn - pfn, arg);
if (ret)
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
