lkml.org 
[lkml]   [2020]   [Jul]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v5 2/9] mm/migrate: move migration helper from .h to .c
Date
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>

It's not performance sensitive function. Move it to .c. This is a
preparation step for future change.

Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
---
include/linux/migrate.h | 33 +++++----------------------------
mm/migrate.c | 29 +++++++++++++++++++++++++++++
2 files changed, 34 insertions(+), 28 deletions(-)

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 3e546cb..1d70b4a 100644
--- a/include/linux/migrate.h
+++ b/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_space *mapping,
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 list_head *l, new_page_t new,
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; }

diff --git a/mm/migrate.c b/mm/migrate.c
index d105b67..7370a66 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1531,6 +1531,35 @@ int migrate_pages(struct list_head *from, new_page_t get_new_page,
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)
--
2.7.4
\
 
 \ /
  Last update: 2020-07-13 08:43    [W:0.101 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site