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authorChristoph Lameter <clameter@sgi.com>2006-02-01 03:05:41 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-01 08:53:17 -0800
commite965f9630c651fa4249039fd4b80c9392d07a856 (patch)
tree1353dd536d0ee549c30e462086624c21788ee9d2 /mm/rmap.c
parent7e2ab150d1b3b286a4c864c60a549b2601777b63 (diff)
[PATCH] Direct Migration V9: Avoid writeback / page_migrate() method
Migrate a page with buffers without requiring writeback This introduces a new address space operation migratepage() that may be used by a filesystem to implement its own version of page migration. A version is provided that migrates buffers attached to pages. Some filesystems (ext2, ext3, xfs) are modified to utilize this feature. The swapper address space operation are modified so that a regular migrate_page() will occur for anonymous pages without writeback (migrate_pages forces every anonymous page to have a swap entry). Signed-off-by: Mike Kravetz <kravetz@us.ibm.com> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index f4b91d7aa5c..df2c41c2a9a 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -233,6 +233,7 @@ void remove_from_swap(struct page *page)
delete_from_swap_cache(page);
}
+EXPORT_SYMBOL(remove_from_swap);
#endif
/*