The patch titled
Subject: mm/migrate: move migration helper from .h to .c
has been added to the -mm tree. Its filename is
mm-migrate-move-migration-helper-from-h-to-c.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-migrate-move-migration-helper-from-h-to-c.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-migrate-move-migration-helper-from-h-to-c.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Subject: mm/migrate: move migration helper from .h to .c
It's not performance sensitive function. Move it to .c. This is a
preparation step for future change.
Link: http://lkml.kernel.org/r/1592892828-1934-3-git-send-email-iamjoonsoo.kim@xxxxxxx
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Acked-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Roman Gushchin <guro@xxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/migrate.h | 33 +++++----------------------------
mm/migrate.c | 29 +++++++++++++++++++++++++++++
2 files changed, 34 insertions(+), 28 deletions(-)
--- a/include/linux/migrate.h~mm-migrate-move-migration-helper-from-h-to-c
+++ a/include/linux/migrate.h
@@ -31,34 +31,6 @@ enum migrate_reason {
/* In mm/debug.c; also keep sync with include/trace/events/migrate.h */
extern const char *migrate_reason_names[MR_TYPES];
-static inline struct page *new_page_nodemask(struct page *page,
- int preferred_nid, nodemask_t *nodemask)
-{
- gfp_t gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL;
- unsigned int order = 0;
- struct page *new_page = NULL;
-
- if (PageHuge(page))
- return alloc_huge_page_nodemask(page_hstate(compound_head(page)),
- preferred_nid, nodemask);
-
- if (PageTransHuge(page)) {
- gfp_mask |= GFP_TRANSHUGE;
- order = HPAGE_PMD_ORDER;
- }
-
- if (PageHighMem(page) || (zone_idx(page_zone(page)) == ZONE_MOVABLE))
- gfp_mask |= __GFP_HIGHMEM;
-
- new_page = __alloc_pages_nodemask(gfp_mask, order,
- preferred_nid, nodemask);
-
- if (new_page && PageTransHuge(new_page))
- prep_transhuge_page(new_page);
-
- return new_page;
-}
-
#ifdef CONFIG_MIGRATION
extern void putback_movable_pages(struct list_head *l);
@@ -67,6 +39,8 @@ extern int migrate_page(struct address_s
enum migrate_mode mode);
extern int migrate_pages(struct list_head *l, new_page_t new, free_page_t free,
unsigned long private, enum migrate_mode mode, int reason);
+extern struct page *new_page_nodemask(struct page *page,
+ int preferred_nid, nodemask_t *nodemask);
extern int isolate_movable_page(struct page *page, isolate_mode_t mode);
extern void putback_movable_page(struct page *page);
@@ -85,6 +59,9 @@ static inline int migrate_pages(struct l
free_page_t free, unsigned long private, enum migrate_mode mode,
int reason)
{ return -ENOSYS; }
+static inline struct page *new_page_nodemask(struct page *page,
+ int preferred_nid, nodemask_t *nodemask)
+ { return NULL; }
static inline int isolate_movable_page(struct page *page, isolate_mode_t mode)
{ return -EBUSY; }
--- a/mm/migrate.c~mm-migrate-move-migration-helper-from-h-to-c
+++ a/mm/migrate.c
@@ -1513,6 +1513,35 @@ out:
return rc;
}
+struct page *new_page_nodemask(struct page *page,
+ int preferred_nid, nodemask_t *nodemask)
+{
+ gfp_t gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL;
+ unsigned int order = 0;
+ struct page *new_page = NULL;
+
+ if (PageHuge(page))
+ return alloc_huge_page_nodemask(
+ page_hstate(compound_head(page)),
+ preferred_nid, nodemask);
+
+ if (PageTransHuge(page)) {
+ gfp_mask |= GFP_TRANSHUGE;
+ order = HPAGE_PMD_ORDER;
+ }
+
+ if (PageHighMem(page) || (zone_idx(page_zone(page)) == ZONE_MOVABLE))
+ gfp_mask |= __GFP_HIGHMEM;
+
+ new_page = __alloc_pages_nodemask(gfp_mask, order,
+ preferred_nid, nodemask);
+
+ if (new_page && PageTransHuge(new_page))
+ prep_transhuge_page(new_page);
+
+ return new_page;
+}
+
#ifdef CONFIG_NUMA
static int store_status(int __user *status, int start, int value, int nr)
_
Patches currently in -mm which might be from iamjoonsoo.kim@xxxxxxx are
mm-swap-fix-for-mm-workingset-age-nonresident-information-alongside-anonymous-pages.patch
mm-memory-fix-io-cost-for-anonymous-page.patch
mm-page_isolation-prefer-the-node-of-the-source-page.patch
mm-migrate-move-migration-helper-from-h-to-c.patch
mm-hugetlb-unify-migration-callbacks.patch
mm-hugetlb-make-hugetlb-migration-callback-cma-aware.patch
mm-migrate-make-a-standard-migration-target-allocation-function.patch
mm-gup-use-a-standard-migration-target-allocation-callback.patch
mm-mempolicy-use-a-standard-migration-target-allocation-callback.patch
mm-page_alloc-remove-a-wrapper-for-alloc_migration_target.patch
