diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> | 2011-12-19 11:40:22 +0800 |
|---|---|---|
| committer | Sebastien Jan <s-jan@ti.com> | 2011-12-20 10:05:50 +0100 |
| commit | 3892a05cc45c57be55158067382a199ecdb8092b (patch) | |
| tree | 5639f7e8ee3a5e53ae99762eb5fda15c9d91cab6 /include | |
| parent | 6ae0f37d0cb237e336b47cb4f6ed94c7eddb854e (diff) | |
Memory hotplug is a logic for making pages unused in the specified
range of pfn. So, some of core logics can be used for other purpose
as allocating a very large contigous memory block.
This patch moves some functions from mm/memory_hotplug.c to
mm/page_isolation.c. This helps adding a function for large-alloc in
page_isolation.c with memory-unplug technique.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
[m.nazarewicz: reworded commit message]
Signed-off-by: Michal Nazarewicz <m.nazarewicz@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
[m.szyprowski: rebased and updated to Linux v3.0-rc1]
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
CC: Michal Nazarewicz <mina86@xxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/page-isolation.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h index 051c1b1ede4e..58cdbac64453 100644 --- a/include/linux/page-isolation.h +++ b/include/linux/page-isolation.h @@ -33,5 +33,12 @@ test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn); extern int set_migratetype_isolate(struct page *page); extern void unset_migratetype_isolate(struct page *page); +/* + * For migration. + */ + +int test_pages_in_a_zone(unsigned long start_pfn, unsigned long end_pfn); +unsigned long scan_lru_pages(unsigned long start, unsigned long end); +int do_migrate_range(unsigned long start_pfn, unsigned long end_pfn); #endif |