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UPSTREAM: mm: migrate: clean up migrate_prep{_local}

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The migrate_prep{_local} never fails, so it is pointless to have return
value and check the return value.

Bug: 180018981
Link: https://lkml.kernel.org/r/20201113205359.556831-5-shy828301@gmail.com
Signed-off-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 236c32eb109696590b7428957eda50cc05e22af8)
Signed-off-by: Minchan Kim <minchan@google.com>
Change-Id: I26ae0a4240c704e6127b51532e5de8ba778edd6e
This commit is contained in:
Yang Shi
2020-12-14 19:13:13 -08:00
committed by Minchan Kim
parent be409db652
commit 059eaf82c0
3 changed files with 6 additions and 14 deletions
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4
include/linux/migrate.h
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@@ -45,8 +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 int migrate_prep(void);
extern int migrate_prep_local(void);
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,