Commit fb52bbae authored by Mathieu Malaterre's avatar Mathieu Malaterre Committed by Linus Torvalds

mm: move is_pageblock_removable_nolock() to mm/memory_hotplug.c

is_pageblock_removable_nolock() is not used outside of
mm/memory_hotplug.c.  Move it next to unique caller
is_mem_section_removable() and make it static.

Remove prototype in <linux/memory_hotplug.h> to silence gcc warning (W=1):

  mm/page_alloc.c:7704:6: warning: no previous prototype for `is_pageblock_removable_nolock' [-Wmissing-prototypes]

Link: http://lkml.kernel.org/r/20180509190001.24789-1-malat@debian.orgSigned-off-by: default avatarMathieu Malaterre <malat@debian.org>
Suggested-by: default avatarMichal Hocko <mhocko@kernel.org>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ab6ecf24
......@@ -107,7 +107,6 @@ static inline bool movable_node_is_enabled(void)
}
#ifdef CONFIG_MEMORY_HOTREMOVE
extern bool is_pageblock_removable_nolock(struct page *page);
extern int arch_remove_memory(u64 start, u64 size,
struct vmem_altmap *altmap);
extern int __remove_pages(struct zone *zone, unsigned long start_pfn,
......
......@@ -1237,6 +1237,29 @@ static struct page *next_active_pageblock(struct page *page)
return page + pageblock_nr_pages;
}
static bool is_pageblock_removable_nolock(struct page *page)
{
struct zone *zone;
unsigned long pfn;
/*
* We have to be careful here because we are iterating over memory
* sections which are not zone aware so we might end up outside of
* the zone but still within the section.
* We have to take care about the node as well. If the node is offline
* its NODE_DATA will be NULL - see page_zone.
*/
if (!node_online(page_to_nid(page)))
return false;
zone = page_zone(page);
pfn = page_to_pfn(page);
if (!zone_spans_pfn(zone, pfn))
return false;
return !has_unmovable_pages(zone, page, 0, MIGRATE_MOVABLE, true);
}
/* Checks if this range of memory is likely to be hot-removable. */
bool is_mem_section_removable(unsigned long start_pfn, unsigned long nr_pages)
{
......
......@@ -7692,29 +7692,6 @@ bool has_unmovable_pages(struct zone *zone, struct page *page, int count,
return true;
}
bool is_pageblock_removable_nolock(struct page *page)
{
struct zone *zone;
unsigned long pfn;
/*
* We have to be careful here because we are iterating over memory
* sections which are not zone aware so we might end up outside of
* the zone but still within the section.
* We have to take care about the node as well. If the node is offline
* its NODE_DATA will be NULL - see page_zone.
*/
if (!node_online(page_to_nid(page)))
return false;
zone = page_zone(page);
pfn = page_to_pfn(page);
if (!zone_spans_pfn(zone, pfn))
return false;
return !has_unmovable_pages(zone, page, 0, MIGRATE_MOVABLE, true);
}
#if (defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || defined(CONFIG_CMA)
static unsigned long pfn_max_align_down(unsigned long pfn)
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment