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authorGu Zheng <guz.fnst@cn.fujitsu.com>2013-07-16 17:56:16 +0800
committerBenjamin LaHaise <bcrl@kvack.org>2013-07-16 09:32:18 -0400
commit36bc08cc01709b4a9bb563b35aa530241ddc63e3 (patch)
treedc441c213b61e83416f77400cb0492b09d2dbf7a /include/linux/migrate.h
parent55708698c5f153f4e390175cdfc395333b2eafbd (diff)
downloadop-kernel-dev-36bc08cc01709b4a9bb563b35aa530241ddc63e3.zip
op-kernel-dev-36bc08cc01709b4a9bb563b35aa530241ddc63e3.tar.gz
fs/aio: Add support to aio ring pages migration
As the aio job will pin the ring pages, that will lead to mem migrated failed. In order to fix this problem we use an anon inode to manage the aio ring pages, and setup the migratepage callback in the anon inode's address space, so that when mem migrating the aio ring pages will be moved to other mem node safely. Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Diffstat (limited to 'include/linux/migrate.h')
-rw-r--r--include/linux/migrate.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index a405d3dc..c407d88 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -55,6 +55,9 @@ extern int migrate_vmas(struct mm_struct *mm,
extern void migrate_page_copy(struct page *newpage, struct page *page);
extern int migrate_huge_page_move_mapping(struct address_space *mapping,
struct page *newpage, struct page *page);
+extern int migrate_page_move_mapping(struct address_space *mapping,
+ struct page *newpage, struct page *page,
+ struct buffer_head *head, enum migrate_mode mode);
#else
static inline void putback_lru_pages(struct list_head *l) {}
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