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Subject[PATCH v2 12/12] mm/page_alloc: use standard migration target allocation function directly
Date
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>

There is no need to make a function in order to call standard migration
target allocation function. Use standard one directly.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
---
include/linux/page-isolation.h | 2 --
mm/page_alloc.c | 9 +++++++--
mm/page_isolation.c | 11 -----------
3 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h
index 35e3bdb..20a4b63 100644
--- a/include/linux/page-isolation.h
+++ b/include/linux/page-isolation.h
@@ -62,6 +62,4 @@ undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
int isol_flags);

-struct page *alloc_migrate_target(struct page *page, struct alloc_control *ac);
-
#endif
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9803158..3f5cfab 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -8359,6 +8359,11 @@ static int __alloc_contig_migrate_range(struct compact_control *cc,
unsigned long pfn = start;
unsigned int tries = 0;
int ret = 0;
+ struct alloc_control ac = {
+ .nid = zone_to_nid(cc->zone),
+ .nmask = &node_states[N_MEMORY],
+ .gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL,
+ };

migrate_prep();

@@ -8385,8 +8390,8 @@ static int __alloc_contig_migrate_range(struct compact_control *cc,
&cc->migratepages);
cc->nr_migratepages -= nr_reclaimed;

- ret = migrate_pages(&cc->migratepages, alloc_migrate_target,
- NULL, NULL, cc->mode, MR_CONTIG_RANGE);
+ ret = migrate_pages(&cc->migratepages, alloc_migration_target,
+ NULL, &ac, cc->mode, MR_CONTIG_RANGE);
}
if (ret < 0) {
putback_movable_pages(&cc->migratepages);
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index aba799d..03d6cad 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -297,14 +297,3 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,

return pfn < end_pfn ? -EBUSY : 0;
}
-
-struct page *alloc_migrate_target(struct page *page, struct alloc_control *__ac)
-{
- struct alloc_control ac = {
- .nid = page_to_nid(page),
- .nmask = &node_states[N_MEMORY],
- .gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL,
- };
-
- return alloc_migration_target(page, &ac);
-}
--
2.7.4
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