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authorMathieu Malaterre <malat@debian.org>2018-06-08 02:07:43 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-08 02:34:36 +0200
commitfb52bbaee598f58352d8732637ebe7013b2df79f (patch)
treee79d680a5062afc9268cbf824e1590eeb77a94fd /mm
parentmm: /proc/pid/pagemap: hide swap entries from unprivileged users (diff)
downloadlinux-fb52bbaee598f58352d8732637ebe7013b2df79f.tar.xz
linux-fb52bbaee598f58352d8732637ebe7013b2df79f.zip
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.org Signed-off-by: Mathieu Malaterre <malat@debian.org> Suggested-by: Michal Hocko <mhocko@kernel.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory_hotplug.c23
-rw-r--r--mm/page_alloc.c23
2 files changed, 23 insertions, 23 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 25982467800b..7deb49f69e27 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -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)
{
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b93cc79a8db4..d0d26da12086 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7692,29 +7692,6 @@ unmovable:
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)