From: Wei Yang <richard.weiyang@xxxxxxxxx> commit 4e0d2e7ef14d9e1c900dac909db45263822b824f upstream. 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> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> --- include/linux/memory_hotplug.h | 4 ++-- mm/memory_hotplug.c | 2 +- mm/sparse.c | 8 ++++---- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 6f13a5a33b51..008e5281e7d7 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -335,8 +335,8 @@ extern void move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn, 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(struct zone *zone, struct mem_section *ms, unsigned long map_offset, struct vmem_altmap *altmap); extern struct page *sparse_decode_mem_map(unsigned long coded_mem_map, diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index e2e2cf7014ee..c109e3f0bc16 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -255,7 +255,7 @@ static int __meminit __add_section(int nid, unsigned long phys_start_pfn, 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; diff --git a/mm/sparse.c b/mm/sparse.c index 9aca9f24bdc5..f52e8c328761 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -661,8 +661,8 @@ static void free_map_bootmem(struct page *memmap) * 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; @@ -674,11 +674,11 @@ int __meminit sparse_add_one_section(struct pglist_data *pgdat, * 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(); -- 2.24.1
