xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

FROMLIST: mm: replace migrate_prep with lru_add_drain_all

Browse Source 
Currently, migrate_prep is merely a wrapper of lru_cache_add_all.
There is not much to gain from having additional abstraction.

Use lru_add_drain_all instead of migrate_prep, which would be more
descriptive.

note: migrate_prep_local in compaction.c changed into lru_add_drain
to avoid CPU schedule cost with involving many other CPUs to keep
keep old behavior.

Bug: 180018981
Link: https://lore.kernel.org/linux-mm/20210310161429.399432-1-minchan@kernel.org/
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Minchan Kim <minchan@google.com>
Change-Id: I1bd3fcb13993e8a7a7961ceec817ac17304364cb
This commit is contained in:
Minchan Kim
2021-03-11 15:14:15 -08:00
committed by Minchan Kim
parent a71a3e1ce6
commit 134ac2d4dc
6 changed files with 11 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/linux/migrate.h
View File

@@ -45,8 +45,6 @@ extern struct page *alloc_migration_target(struct page *page, unsigned long priv
extern int isolate_movable_page(struct page *page, isolate_mode_t mode);
extern void putback_movable_page(struct page *page);
extern void migrate_prep(void);
extern void migrate_prep_local(void);
extern void migrate_page_states(struct page *newpage, struct page *page);
extern void migrate_page_copy(struct page *newpage, struct page *page);
extern int migrate_huge_page_move_mapping(struct address_space *mapping,
@@ -66,9 +64,6 @@ static inline struct page *alloc_migration_target(struct page *page,
static inline int isolate_movable_page(struct page *page, isolate_mode_t mode)
{ return -EBUSY; }
static inline int migrate_prep(void) { return -ENOSYS; }
static inline int migrate_prep_local(void) { return -ENOSYS; }
static inline void migrate_page_states(struct page *newpage, struct page *page)
{
}