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Revert "FROMLIST: mm: replace migrate_prep with lru_add_drain_all"

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This reverts commit 134ac2d4dc.

Bug: 180018981
Signed-off-by: Minchan Kim <minchan@google.com>
Change-Id: I579c72398447f770c235e4fefd246f1dbbd250d0
This commit is contained in:
Minchan Kim
2021-03-19 12:34:42 -07:00
committed by Suren Baghdasaryan
parent 7ed55d7025
commit d3c1bf42af
6 changed files with 32 additions and 11 deletions
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5
include/linux/migrate.h
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@@ -45,6 +45,8 @@ 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,
@@ -64,6 +66,9 @@ 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)
{
}