The patch titled
Subject: mm, sparse: pass nid instead of pgdat to sparse_add_one_section()
has been added to the -mm tree. Its filename is
mm-sparse-pass-nid-instead-of-pgdat-to-sparse_add_one_section.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-sparse-pass-nid-instead-of-pgdat-to-sparse_add_one_section.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-sparse-pass-nid-instead-of-pgdat-to-sparse_add_one_section.patch
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------------------------------------------------------
From: Wei Yang <richard.weiyang@xxxxxxxxx>
Subject: mm, sparse: pass nid instead of pgdat to sparse_add_one_section()
Since the information needed in sparse_add_one_section() is node id to
allocate proper memory, it is not necessary to pass its pgdat.
This patch changes the prototype of sparse_add_one_section() to pass node
id directly. This is intended to reduce misleading that
sparse_add_one_section() would touch pgdat.
Link: http://lkml.kernel.org/r/20181204085657.20472-2-richard.weiyang@xxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memory_hotplug.h | 4 ++--
mm/memory_hotplug.c | 2 +-
mm/sparse.c | 8 ++++----
3 files changed, 7 insertions(+), 7 deletions(-)
--- a/include/linux/memory_hotplug.h~mm-sparse-pass-nid-instead-of-pgdat-to-sparse_add_one_section
+++ a/include/linux/memory_hotplug.h
@@ -335,8 +335,8 @@ extern void move_pfn_range_to_zone(struc
unsigned long nr_pages, struct vmem_altmap *altmap);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
extern bool is_memblock_offlined(struct memory_block *mem);
-extern int sparse_add_one_section(struct pglist_data *pgdat,
- unsigned long start_pfn, struct vmem_altmap *altmap);
+extern int sparse_add_one_section(int nid, unsigned long start_pfn,
+ struct vmem_altmap *altmap);
extern void sparse_remove_one_section(int nid, struct mem_section *ms,
unsigned long map_offset, struct vmem_altmap *altmap);
extern struct page *sparse_decode_mem_map(unsigned long coded_mem_map,
--- a/mm/memory_hotplug.c~mm-sparse-pass-nid-instead-of-pgdat-to-sparse_add_one_section
+++ a/mm/memory_hotplug.c
@@ -253,7 +253,7 @@ static int __meminit __add_section(int n
if (pfn_valid(phys_start_pfn))
return -EEXIST;
- ret = sparse_add_one_section(NODE_DATA(nid), phys_start_pfn, altmap);
+ ret = sparse_add_one_section(nid, phys_start_pfn, altmap);
if (ret < 0)
return ret;
--- a/mm/sparse.c~mm-sparse-pass-nid-instead-of-pgdat-to-sparse_add_one_section
+++ a/mm/sparse.c
@@ -662,8 +662,8 @@ static void free_map_bootmem(struct page
* set. If this is <=0, then that means that the passed-in
* map was not consumed and must be freed.
*/
-int __meminit sparse_add_one_section(struct pglist_data *pgdat,
- unsigned long start_pfn, struct vmem_altmap *altmap)
+int __meminit sparse_add_one_section(int nid, unsigned long start_pfn,
+ struct vmem_altmap *altmap)
{
unsigned long section_nr = pfn_to_section_nr(start_pfn);
struct mem_section *ms;
@@ -675,11 +675,11 @@ int __meminit sparse_add_one_section(str
* no locking for this, because it does its own
* plus, it does a kmalloc
*/
- ret = sparse_index_init(section_nr, pgdat->node_id);
+ ret = sparse_index_init(section_nr, nid);
if (ret < 0 && ret != -EEXIST)
return ret;
ret = 0;
- memmap = kmalloc_section_memmap(section_nr, pgdat->node_id, altmap);
+ memmap = kmalloc_section_memmap(section_nr, nid, altmap);
if (!memmap)
return -ENOMEM;
usemap = __kmalloc_section_usemap();
_
Patches currently in -mm which might be from richard.weiyang@xxxxxxxxx are
mm-slub-remove-validation-on-cpu_slab-in-__flush_cpu_slab.patch
mm-slub-page-is-always-non-null-for-node_match.patch
mm-slub-record-final-state-of-slub-action-in-deactivate_slab.patch
mm-slub-improve-performance-by-skipping-checked-node-in-get_any_partial.patch
mm-remove-reset-of-pcp-counter-in-pageset_init.patch
vmscan-return-node_reclaim_noscan-in-node_reclaim-when-config_numa-is-n.patch
drivers-base-memoryc-remove-an-unnecessary-check-on-nr_mem_sections.patch
mm-check-nr_initialised-with-pages_per_section-directly-in-defer_init.patch
mm-sparse-drop-pgdat_resize_lock-in-sparse_add-remove_one_section.patch
mm-sparse-drop-pgdat_resize_lock-in-sparse_add-remove_one_section-v4.patch
mm-sparse-pass-nid-instead-of-pgdat-to-sparse_add_one_section.patch
mm-hotplug-move-init_currently_empty_zone-under-zone_span_lock-protection.patch
mm-show_mem-drop-pgdat_resize_lock-in-show_mem.patch
