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-rw-r--r--include/linux/mmzone.h3
-rw-r--r--mm/sparse.c9
2 files changed, 2 insertions, 10 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index a6e300732ec7..fc4b5cdb6c2d 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -637,8 +637,7 @@ typedef struct pglist_data {
#if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_DEFERRED_STRUCT_PAGE_INIT)
/*
* Must be held any time you expect node_start_pfn, node_present_pages
- * or node_spanned_pages stay constant. Holding this will also
- * guarantee that any pfn_valid() stays that way.
+ * or node_spanned_pages stay constant.
*
* pgdat_resize_lock() and pgdat_resize_unlock() are provided to
* manipulate node_size_lock without checking for CONFIG_MEMORY_HOTPLUG
diff --git a/mm/sparse.c b/mm/sparse.c
index 691544a2814c..7323a03fbc39 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -685,7 +685,6 @@ int __meminit sparse_add_one_section(struct pglist_data *pgdat,
struct mem_section *ms;
struct page *memmap;
unsigned long *usemap;
- unsigned long flags;
int ret;
/*
@@ -705,8 +704,6 @@ int __meminit sparse_add_one_section(struct pglist_data *pgdat,
return -ENOMEM;
}
- pgdat_resize_lock(pgdat, &flags);
-
ms = __pfn_to_section(start_pfn);
if (ms->section_mem_map & SECTION_MARKED_PRESENT) {
ret = -EEXIST;
@@ -723,7 +720,6 @@ int __meminit sparse_add_one_section(struct pglist_data *pgdat,
sparse_init_one_section(ms, section_nr, memmap, usemap);
out:
- pgdat_resize_unlock(pgdat, &flags);
if (ret < 0) {
kfree(usemap);
__kfree_section_memmap(memmap, altmap);
@@ -794,10 +790,8 @@ void sparse_remove_one_section(struct zone *zone, struct mem_section *ms,
unsigned long map_offset, struct vmem_altmap *altmap)
{
struct page *memmap = NULL;
- unsigned long *usemap = NULL, flags;
- struct pglist_data *pgdat = zone->zone_pgdat;
+ unsigned long *usemap = NULL;
- pgdat_resize_lock(pgdat, &flags);
if (ms->section_mem_map) {
usemap = ms->pageblock_flags;
memmap = sparse_decode_mem_map(ms->section_mem_map,
@@ -805,7 +799,6 @@ void sparse_remove_one_section(struct zone *zone, struct mem_section *ms,
ms->section_mem_map = 0;
ms->pageblock_flags = NULL;
}
- pgdat_resize_unlock(pgdat, &flags);
clear_hwpoisoned_pages(memmap + map_offset,
PAGES_PER_SECTION - map_offset);