diff options
| author | Andrew Morton <akpm@linux-foundation.org> | 2014-10-09 15:27:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-09 22:25:56 -0400 |
| commit | 1c93923cc264105418e6ead149c76bd88302eff4 (patch) | |
| tree | 1862aef87b2636d01b55f4ccbac7542fbe016060 | |
| parent | dd6eecb917938c1b7e505a83df307b3476e7c8bd (diff) | |
include/linux/migrate.h: remove migrate_page #define
This is designed to avoid a few ifdefs in .c files but it's obnoxious
because it can cause unsuspecting "migrate_page" symbols to get turned into
"NULL".
Just nuke it and use the ifdefs.
Cc: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/migrate.h | 3 | ||||
| -rw-r--r-- | mm/shmem.c | 2 | ||||
| -rw-r--r-- | mm/swap_state.c | 2 |
3 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h index a2901c414664..b66fd10f4b93 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -82,9 +82,6 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping, return -ENOSYS; } -/* Possible settings for the migrate_page() method in address_operations */ -#define migrate_page NULL - #endif /* CONFIG_MIGRATION */ #ifdef CONFIG_NUMA_BALANCING diff --git a/mm/shmem.c b/mm/shmem.c index 469f90d56051..4fad61bb41e5 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -3077,7 +3077,9 @@ static const struct address_space_operations shmem_aops = { .write_begin = shmem_write_begin, .write_end = shmem_write_end, #endif +#ifdef CONFIG_MIGRATION .migratepage = migrate_page, +#endif .error_remove_page = generic_error_remove_page, }; diff --git a/mm/swap_state.c b/mm/swap_state.c index 3e0ec83d000c..ef1f39139b71 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -28,7 +28,9 @@ static const struct address_space_operations swap_aops = { .writepage = swap_writepage, .set_page_dirty = swap_set_page_dirty, +#ifdef CONFIG_MIGRATION .migratepage = migrate_page, +#endif }; static struct backing_dev_info swap_backing_dev_info = { |