On Mon 23-01-17 22:50:10, [email protected] wrote:
> From: Yisheng Xie <[email protected]>
>
> This patch is to extends soft offlining framework to support
> non-lru page, which already support migration after
> commit bda807d44454 ("mm: migrate: support non-lru movable page
> migration")
>
> When memory corrected errors occur on a non-lru movable page,
> we can choose to stop using it by migrating data onto another
> page and disable the original (maybe half-broken) one.
>
> Signed-off-by: Yisheng Xie <[email protected]>
> Suggested-by: Michal Hocko <[email protected]>
> Suggested-by: Minchan Kim <[email protected]>
> Acked-by: Naoya Horiguchi <[email protected]>
This doesn't compile with CONFIG_MIGRATION=n
mm/memory-failure.c: In function '__soft_offline_page':
mm/memory-failure.c:1656:3: error: implicit declaration of function
'isolate_movable_page' [-Werror=implicit-function-declaration]
ret = !isolate_movable_page(page, ISOLATE_UNEVICTABLE);
^
cc1: some warnings being treated as errors
I guess the following should handle the problem
---
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index ae8d475a9385..1da7a1f99fc7 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -57,6 +57,11 @@ static inline int migrate_pages(struct list_head *l,
new_page_t new,
int reason)
{ return -ENOSYS; }
+static inline bool 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; }
At least it compiles fine now. I have to look at the patch yet.
--
Michal Hocko
SUSE Labs
