[PATCH v7 5/7] mm/cma: remove MIGRATE_CMA

From: js1304
Date: Mon Apr 10 2017 - 23:18:32 EST

From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>

Now, all reserved pages for CMA region are belong to the ZONE_CMA
and there is no other type of pages. Therefore, we don't need to
use MIGRATE_CMA to distinguish and handle differently for CMA pages
and ordinary pages. Remove MIGRATE_CMA.

Unfortunately, this patch make free CMA counter incorrect because
we count it when pages are on the MIGRATE_CMA. It will be fixed
by next patch. I can squash next patch here but it makes changes
complicated and hard to review so I separate that.

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
---
arch/powerpc/mm/mmu_context_iommu.c | 2 +-
include/linux/gfp.h | 2 +-
include/linux/mmzone.h | 26 +----------
include/linux/page-isolation.h | 5 +--
include/linux/vmstat.h | 8 ----
mm/cma.c | 3 +-
mm/compaction.c | 8 +---
mm/hugetlb.c | 3 +-
mm/memory_hotplug.c | 7 ++-
mm/page_alloc.c | 86 ++++++++++---------------------------
mm/page_isolation.c | 15 +++----
mm/page_owner.c | 6 +--
mm/usercopy.c | 4 +-
13 files changed, 43 insertions(+), 132 deletions(-)

diff --git a/arch/powerpc/mm/mmu_context_iommu.c b/arch/powerpc/mm/mmu_context_iommu.c
index fc67bd7..330c495 100644
--- a/arch/powerpc/mm/mmu_context_iommu.c
+++ b/arch/powerpc/mm/mmu_context_iommu.c
@@ -184,7 +184,7 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries,
* of the CMA zone if possible. NOTE: faulting in + migration
* can be expensive. Batching can be considered later
*/
- if (is_migrate_cma_page(page)) {
+ if (is_zone_cma(page_zone(page))) {
if (mm_iommu_move_page_from_cma(page))
goto populate;
if (1 != get_user_pages_fast(ua + (i << PAGE_SHIFT),
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index c2ed2eb..15987cc 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -563,7 +563,7 @@ static inline bool pm_suspended_storage(void)
#if (defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || defined(CONFIG_CMA)
/* The below functions must be run on a range from a single zone. */
extern int alloc_contig_range(unsigned long start, unsigned long end,
- unsigned migratetype, gfp_t gfp_mask);
+ gfp_t gfp_mask);
extern void free_contig_range(unsigned long pfn, unsigned nr_pages);
#endif

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 74eda07..efb69b1 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -41,22 +41,6 @@ enum migratetype {
MIGRATE_RECLAIMABLE,
MIGRATE_PCPTYPES, /* the number of types on the pcp lists */
MIGRATE_HIGHATOMIC = MIGRATE_PCPTYPES,
-#ifdef CONFIG_CMA
- /*
- * MIGRATE_CMA migration type is designed to mimic the way
- * ZONE_MOVABLE works. Only movable pages can be allocated
- * from MIGRATE_CMA pageblocks and page allocator never
- * implicitly change migration type of MIGRATE_CMA pageblock.
- *
- * The way to use it is to change migratetype of a range of
- * pageblocks to MIGRATE_CMA which can be done by
- * __free_pageblock_cma() function. What is important though
- * is that a range of pageblocks must be aligned to
- * MAX_ORDER_NR_PAGES should biggest page be bigger then
- * a single pageblock.
- */
- MIGRATE_CMA,
-#endif
#ifdef CONFIG_MEMORY_ISOLATION
MIGRATE_ISOLATE, /* can't allocate from here */
#endif
@@ -66,17 +50,9 @@ enum migratetype {
/* In mm/page_alloc.c; keep in sync also with show_migration_types() there */
extern char * const migratetype_names[MIGRATE_TYPES];

-#ifdef CONFIG_CMA
-# define is_migrate_cma(migratetype) unlikely((migratetype) == MIGRATE_CMA)
-# define is_migrate_cma_page(_page) (get_pageblock_migratetype(_page) == MIGRATE_CMA)
-#else
-# define is_migrate_cma(migratetype) false
-# define is_migrate_cma_page(_page) false
-#endif
-
static inline bool is_migrate_movable(int mt)
{
- return is_migrate_cma(mt) || mt == MIGRATE_MOVABLE;
+ return mt == MIGRATE_MOVABLE;
}

#define for_each_migratetype_order(order, type) \
diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h
index d4cd201..67735f2 100644
--- a/include/linux/page-isolation.h
+++ b/include/linux/page-isolation.h
@@ -46,15 +46,14 @@ int move_freepages_block(struct zone *zone, struct page *page,
*/
int
start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
- unsigned migratetype, bool skip_hwpoisoned_pages);
+ bool skip_hwpoisoned_pages);

/*
* Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
* target range is [start_pfn, end_pfn)
*/
int
-undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
- unsigned migratetype);
+undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn);

/*
* Test all pages in [start_pfn, end_pfn) are isolated or not.
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 6137719..ac6db88 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -341,14 +341,6 @@ static inline void drain_zonestat(struct zone *zone,
struct per_cpu_pageset *pset) { }
#endif /* CONFIG_SMP */

-static inline void __mod_zone_freepage_state(struct zone *zone, int nr_pages,
- int migratetype)
-{
- __mod_zone_page_state(zone, NR_FREE_PAGES, nr_pages);
- if (is_migrate_cma(migratetype))
- __mod_zone_page_state(zone, NR_FREE_CMA_PAGES, nr_pages);
-}
-
extern const char * const vmstat_text[];

#endif /* _LINUX_VMSTAT_H */
diff --git a/mm/cma.c b/mm/cma.c
index 6d8bd300..91dd85a 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -479,8 +479,7 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,

pfn = cma->base_pfn + (bitmap_no << cma->order_per_bit);
mutex_lock(&cma_mutex);
- ret = alloc_contig_range(pfn, pfn + count, MIGRATE_CMA,
- gfp_mask);
+ ret = alloc_contig_range(pfn, pfn + count, gfp_mask);
mutex_unlock(&cma_mutex);
if (ret == 0) {
page = pfn_to_page(pfn);
diff --git a/mm/compaction.c b/mm/compaction.c
index 80b1424..f6ae10f 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1017,7 +1017,7 @@ static bool suitable_migration_target(struct compact_control *cc,
if (cc->ignore_block_suitable)
return true;

- /* If the block is MIGRATE_MOVABLE or MIGRATE_CMA, allow migration */
+ /* If the block is MIGRATE_MOVABLE, allow migration */
if (is_migrate_movable(get_pageblock_migratetype(page)))
return true;

@@ -1338,12 +1338,6 @@ static enum compact_result __compact_finished(struct zone *zone,
if (!list_empty(&area->free_list[migratetype]))
return COMPACT_SUCCESS;

-#ifdef CONFIG_CMA
- /* MIGRATE_MOVABLE can fallback on MIGRATE_CMA */
- if (migratetype == MIGRATE_MOVABLE &&
- !list_empty(&area->free_list[MIGRATE_CMA]))
- return COMPACT_SUCCESS;
-#endif
/*
* Job done if allocation would steal freepages from
* other migratetype buddy lists.
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index e582887..d26c837 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1053,8 +1053,7 @@ static int __alloc_gigantic_page(unsigned long start_pfn,
unsigned long nr_pages)
{
unsigned long end_pfn = start_pfn + nr_pages;
- return alloc_contig_range(start_pfn, end_pfn, MIGRATE_MOVABLE,
- GFP_KERNEL);
+ return alloc_contig_range(start_pfn, end_pfn, GFP_KERNEL);
}

static bool pfn_range_valid_gigantic(struct zone *z,
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 76d4745..c48c36f 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1897,8 +1897,7 @@ static int __ref __offline_pages(unsigned long start_pfn,
return -EINVAL;

/* set above range as isolated */
- ret = start_isolate_page_range(start_pfn, end_pfn,
- MIGRATE_MOVABLE, true);
+ ret = start_isolate_page_range(start_pfn, end_pfn, true);
if (ret)
return ret;

@@ -1968,7 +1967,7 @@ static int __ref __offline_pages(unsigned long start_pfn,
We cannot do rollback at this point. */
offline_isolated_pages(start_pfn, end_pfn);
/* reset pagetype flags and makes migrate type to be MOVABLE */
- undo_isolate_page_range(start_pfn, end_pfn, MIGRATE_MOVABLE);
+ undo_isolate_page_range(start_pfn, end_pfn);
/* removal success */
adjust_managed_page_count(pfn_to_page(start_pfn), -offlined_pages);
zone->present_pages -= offlined_pages;
@@ -2005,7 +2004,7 @@ static int __ref __offline_pages(unsigned long start_pfn,
((unsigned long long) end_pfn << PAGE_SHIFT) - 1);
memory_notify(MEM_CANCEL_OFFLINE, &arg);
/* pushback to free area */
- undo_isolate_page_range(start_pfn, end_pfn, MIGRATE_MOVABLE);
+ undo_isolate_page_range(start_pfn, end_pfn);
return ret;
}

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 18f16bf..33a1b69 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -136,8 +136,8 @@ gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK;
* put on a pcplist. Used to avoid the pageblock migratetype lookup when
* freeing from pcplists in most cases, at the cost of possibly becoming stale.
* Also the migratetype set in the page does not necessarily match the pcplist
- * index, e.g. page might have MIGRATE_CMA set but be on a pcplist with any
- * other index - this ensures that it will be put on the correct CMA freelist.
+ * index, e.g. page might have MIGRATE_MOVABLE set but be on a pcplist with any
+ * other index - this ensures that it will be put on the correct freelist.
*/
static inline int get_pcppage_migratetype(struct page *page)
{
@@ -247,9 +247,6 @@ char * const migratetype_names[MIGRATE_TYPES] = {
"Movable",
"Reclaimable",
"HighAtomic",
-#ifdef CONFIG_CMA
- "CMA",
-#endif
#ifdef CONFIG_MEMORY_ISOLATION
"Isolate",
#endif
@@ -681,7 +678,7 @@ static inline bool set_page_guard(struct zone *zone, struct page *page,
INIT_LIST_HEAD(&page->lru);
set_page_private(page, order);
/* Guard pages are not available for any usage */
- __mod_zone_freepage_state(zone, -(1 << order), migratetype);
+ __mod_zone_page_state(zone, NR_FREE_PAGES, -(1 << order));

return true;
}
@@ -702,7 +699,7 @@ static inline void clear_page_guard(struct zone *zone, struct page *page,

set_page_private(page, 0);
if (!is_migrate_isolate(migratetype))
- __mod_zone_freepage_state(zone, (1 << order), migratetype);
+ __mod_zone_page_state(zone, NR_FREE_PAGES, (1 << order));
}
#else
struct page_ext_operations debug_guardpage_ops;
@@ -809,7 +806,7 @@ static inline void __free_one_page(struct page *page,

VM_BUG_ON(migratetype == -1);
if (likely(!is_migrate_isolate(migratetype)))
- __mod_zone_freepage_state(zone, 1 << order, migratetype);
+ __mod_zone_page_state(zone, NR_FREE_PAGES, 1 << order);

VM_BUG_ON_PAGE(pfn & ((1 << order) - 1), page);
VM_BUG_ON_PAGE(bad_range(zone, page), page);
@@ -1591,7 +1588,7 @@ static void __init adjust_present_page_count(struct page *page, long count)
zone->present_pages += count;
}

-/* Free whole pageblock and set its migration type to MIGRATE_CMA. */
+/* Free whole pageblock and set its migration type to MIGRATE_MOVABLE. */
void __init init_cma_reserved_pageblock(struct page *page)
{
unsigned i = pageblock_nr_pages;
@@ -1616,7 +1613,7 @@ void __init init_cma_reserved_pageblock(struct page *page)

adjust_present_page_count(page, pageblock_nr_pages);

- set_pageblock_migratetype(page, MIGRATE_CMA);
+ set_pageblock_migratetype(page, MIGRATE_MOVABLE);

if (pageblock_order >= MAX_ORDER) {
i = pageblock_nr_pages;
@@ -1836,25 +1833,11 @@ static int fallbacks[MIGRATE_TYPES][4] = {
[MIGRATE_UNMOVABLE] = { MIGRATE_RECLAIMABLE, MIGRATE_MOVABLE, MIGRATE_TYPES },
[MIGRATE_RECLAIMABLE] = { MIGRATE_UNMOVABLE, MIGRATE_MOVABLE, MIGRATE_TYPES },
[MIGRATE_MOVABLE] = { MIGRATE_RECLAIMABLE, MIGRATE_UNMOVABLE, MIGRATE_TYPES },
-#ifdef CONFIG_CMA
- [MIGRATE_CMA] = { MIGRATE_TYPES }, /* Never used */
-#endif
#ifdef CONFIG_MEMORY_ISOLATION
[MIGRATE_ISOLATE] = { MIGRATE_TYPES }, /* Never used */
#endif
};

-#ifdef CONFIG_CMA
-static struct page *__rmqueue_cma_fallback(struct zone *zone,
- unsigned int order)
-{
- return __rmqueue_smallest(zone, order, MIGRATE_CMA);
-}
-#else
-static inline struct page *__rmqueue_cma_fallback(struct zone *zone,
- unsigned int order) { return NULL; }
-#endif
-
/*
* Move the free pages in a range to the free lists of the requested type.
* Note that start_page and end_pages are not aligned on a pageblock
@@ -2122,8 +2105,7 @@ static void reserve_highatomic_pageblock(struct page *page, struct zone *zone,

/* Yoink! */
mt = get_pageblock_migratetype(page);
- if (!is_migrate_highatomic(mt) && !is_migrate_isolate(mt)
- && !is_migrate_cma(mt)) {
+ if (!is_migrate_highatomic(mt) && !is_migrate_isolate(mt)) {
zone->nr_reserved_highatomic += pageblock_nr_pages;
set_pageblock_migratetype(page, MIGRATE_HIGHATOMIC);
move_freepages_block(zone, page, MIGRATE_HIGHATOMIC, NULL);
@@ -2267,13 +2249,8 @@ static struct page *__rmqueue(struct zone *zone, unsigned int order,

retry:
page = __rmqueue_smallest(zone, order, migratetype);
- if (unlikely(!page)) {
- if (migratetype == MIGRATE_MOVABLE)
- page = __rmqueue_cma_fallback(zone, order);
-
- if (!page && __rmqueue_fallback(zone, order, migratetype))
- goto retry;
- }
+ if (unlikely(!page) && __rmqueue_fallback(zone, order, migratetype))
+ goto retry;

trace_mm_page_alloc_zone_locked(page, order, migratetype);
return page;
@@ -2315,9 +2292,6 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order,
list_add_tail(&page->lru, list);
list = &page->lru;
alloced++;
- if (is_migrate_cma(get_pcppage_migratetype(page)))
- __mod_zone_page_state(zone, NR_FREE_CMA_PAGES,
- -(1 << order));
}

/*
@@ -2667,7 +2641,7 @@ int __isolate_free_page(struct page *page, unsigned int order)
if (!zone_watermark_ok(zone, 0, watermark, 0, 0))
return 0;

- __mod_zone_freepage_state(zone, -(1UL << order), mt);
+ __mod_zone_page_state(zone, NR_FREE_PAGES, -(1UL << order));
}

/* Remove page from free list */
@@ -2683,8 +2657,8 @@ int __isolate_free_page(struct page *page, unsigned int order)
struct page *endpage = page + (1 << order) - 1;
for (; page < endpage; page += pageblock_nr_pages) {
int mt = get_pageblock_migratetype(page);
- if (!is_migrate_isolate(mt) && !is_migrate_cma(mt)
- && !is_migrate_highatomic(mt))
+ if (!is_migrate_isolate(mt) &&
+ !is_migrate_highatomic(mt))
set_pageblock_migratetype(page,
MIGRATE_MOVABLE);
}
@@ -2807,8 +2781,7 @@ struct page *rmqueue(struct zone *preferred_zone,
spin_unlock(&zone->lock);
if (!page)
goto failed;
- __mod_zone_freepage_state(zone, -(1 << order),
- get_pcppage_migratetype(page));
+ __mod_zone_page_state(zone, NR_FREE_PAGES, -(1 << order));

__count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order);
zone_statistics(preferred_zone, zone);
@@ -2958,11 +2931,6 @@ bool __zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark,
if (!list_empty(&area->free_list[mt]))
return true;
}
-
-#ifdef CONFIG_CMA
- if (!list_empty(&area->free_list[MIGRATE_CMA]))
- return true;
-#endif
}
return false;
}
@@ -4469,9 +4437,6 @@ static void show_migration_types(unsigned char type)
[MIGRATE_MOVABLE] = 'M',
[MIGRATE_RECLAIMABLE] = 'E',
[MIGRATE_HIGHATOMIC] = 'H',
-#ifdef CONFIG_CMA
- [MIGRATE_CMA] = 'C',
-#endif
#ifdef CONFIG_MEMORY_ISOLATION
[MIGRATE_ISOLATE] = 'I',
#endif
@@ -7361,7 +7326,7 @@ bool has_unmovable_pages(struct zone *zone, struct page *page, int count,
if (zone_idx(zone) == ZONE_MOVABLE || is_zone_cma(zone))
return false;
mt = get_pageblock_migratetype(page);
- if (mt == MIGRATE_MOVABLE || is_migrate_cma(mt))
+ if (mt == MIGRATE_MOVABLE)
return false;

pfn = page_to_pfn(page);
@@ -7512,16 +7477,12 @@ static int __alloc_contig_migrate_range(struct compact_control *cc,
* alloc_contig_range() -- tries to allocate given range of pages
* @start: start PFN to allocate
* @end: one-past-the-last PFN to allocate
- * @migratetype: migratetype of the underlaying pageblocks (either
- * #MIGRATE_MOVABLE or #MIGRATE_CMA). All pageblocks
- * in range must have the same migratetype and it must
- * be either of the two.
* @gfp_mask: GFP mask to use during compaction
*
* The PFN range does not have to be pageblock or MAX_ORDER_NR_PAGES
* aligned, however it's the caller's responsibility to guarantee that
* we are the only thread that changes migrate type of pageblocks the
- * pages fall in.
+ * pages fall in and it should be MIGRATE_MOVABLE.
*
* The PFN range must belong to a single zone.
*
@@ -7530,7 +7491,7 @@ static int __alloc_contig_migrate_range(struct compact_control *cc,
* need to be freed with free_contig_range().
*/
int alloc_contig_range(unsigned long start, unsigned long end,
- unsigned migratetype, gfp_t gfp_mask)
+ gfp_t gfp_mask)
{
unsigned long outer_start, outer_end;
unsigned int order;
@@ -7564,15 +7525,14 @@ int alloc_contig_range(unsigned long start, unsigned long end,
* allocator removing them from the buddy system. This way
* page allocator will never consider using them.
*
- * This lets us mark the pageblocks back as
- * MIGRATE_CMA/MIGRATE_MOVABLE so that free pages in the
- * aligned range but not in the unaligned, original range are
- * put back to page allocator so that buddy can use them.
+ * This lets us mark the pageblocks back as MIGRATE_MOVABLE
+ * so that free pages in the aligned range but not in the
+ * unaligned, original range are put back to page allocator
+ * so that buddy can use them.
*/

ret = start_isolate_page_range(pfn_max_align_down(start),
- pfn_max_align_up(end), migratetype,
- false);
+ pfn_max_align_up(end), false);
if (ret)
return ret;

@@ -7650,7 +7610,7 @@ int alloc_contig_range(unsigned long start, unsigned long end,

done:
undo_isolate_page_range(pfn_max_align_down(start),
- pfn_max_align_up(end), migratetype);
+ pfn_max_align_up(end));
return ret;
}

diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 5092e4e..312f2f6 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -62,14 +62,13 @@ static int set_migratetype_isolate(struct page *page,
out:
if (!ret) {
unsigned long nr_pages;
- int migratetype = get_pageblock_migratetype(page);

set_pageblock_migratetype(page, MIGRATE_ISOLATE);
zone->nr_isolate_pageblock++;
nr_pages = move_freepages_block(zone, page, MIGRATE_ISOLATE,
NULL);

- __mod_zone_freepage_state(zone, -nr_pages, migratetype);
+ __mod_zone_page_state(zone, NR_FREE_PAGES, -nr_pages);
}

spin_unlock_irqrestore(&zone->lock, flags);
@@ -122,7 +121,7 @@ static void unset_migratetype_isolate(struct page *page, unsigned migratetype)
*/
if (!isolated_page) {
nr_pages = move_freepages_block(zone, page, migratetype, NULL);
- __mod_zone_freepage_state(zone, nr_pages, migratetype);
+ __mod_zone_page_state(zone, NR_FREE_PAGES, nr_pages);
}
set_pageblock_migratetype(page, migratetype);
zone->nr_isolate_pageblock--;
@@ -151,7 +150,6 @@ __first_valid_page(unsigned long pfn, unsigned long nr_pages)
* to be MIGRATE_ISOLATE.
* @start_pfn: The lower PFN of the range to be isolated.
* @end_pfn: The upper PFN of the range to be isolated.
- * @migratetype: migrate type to set in error recovery.
*
* Making page-allocation-type to be MIGRATE_ISOLATE means free pages in
* the range will never be allocated. Any free pages and pages freed in the
@@ -161,7 +159,7 @@ __first_valid_page(unsigned long pfn, unsigned long nr_pages)
* Returns 0 on success and -EBUSY if any part of range cannot be isolated.
*/
int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
- unsigned migratetype, bool skip_hwpoisoned_pages)
+ bool skip_hwpoisoned_pages)
{
unsigned long pfn;
unsigned long undo_pfn;
@@ -185,7 +183,7 @@ int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
for (pfn = start_pfn;
pfn < undo_pfn;
pfn += pageblock_nr_pages)
- unset_migratetype_isolate(pfn_to_page(pfn), migratetype);
+ unset_migratetype_isolate(pfn_to_page(pfn), MIGRATE_MOVABLE);

return -EBUSY;
}
@@ -193,8 +191,7 @@ int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
/*
* Make isolated pages available again.
*/
-int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
- unsigned migratetype)
+int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn)
{
unsigned long pfn;
struct page *page;
@@ -208,7 +205,7 @@ int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
page = __first_valid_page(pfn, pageblock_nr_pages);
if (!page || !is_migrate_isolate_page(page))
continue;
- unset_migratetype_isolate(page, migratetype);
+ unset_migratetype_isolate(page, MIGRATE_MOVABLE);
}
return 0;
}
diff --git a/mm/page_owner.c b/mm/page_owner.c
index c3cee24..4016815 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -299,11 +299,7 @@ void pagetypeinfo_showmixedcount_print(struct seq_file *m,
page_mt = gfpflags_to_migratetype(
page_owner->gfp_mask);
if (pageblock_mt != page_mt) {
- if (is_migrate_cma(pageblock_mt))
- count[MIGRATE_MOVABLE]++;
- else
- count[pageblock_mt]++;
-
+ count[pageblock_mt]++;
pfn = block_end_pfn;
break;
}
diff --git a/mm/usercopy.c b/mm/usercopy.c
index a9852b2..f0a2c8f 100644
--- a/mm/usercopy.c
+++ b/mm/usercopy.c
@@ -179,7 +179,7 @@ static inline const char *check_page_span(const void *ptr, unsigned long n,
* several independently allocated pages.
*/
is_reserved = PageReserved(page);
- is_cma = is_migrate_cma_page(page);
+ is_cma = is_zone_cma(page_zone(page));
if (!is_reserved && !is_cma)
return "<spans multiple pages>";

@@ -187,7 +187,7 @@ static inline const char *check_page_span(const void *ptr, unsigned long n,
page = virt_to_head_page(ptr);
if (is_reserved && !PageReserved(page))
return "<spans Reserved and non-Reserved pages>";
- if (is_cma && !is_migrate_cma_page(page))
+ if (is_cma && !is_zone_cma(page_zone(page)))
return "<spans CMA and non-CMA pages>";
}
#endif
--
2.7.4