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authorChristoph Lameter <clameter@sgi.com>2006-02-01 06:05:39 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-01 11:53:16 -0500
commita3351e525e4768c29aa5d22ef59b5b38e0361e53 (patch)
tree457ab54f402b471c5158e8b361d059e88ab8cd62 /include/linux/rmap.h
parenta48d07afdf18212de22b959715b16793c5a6e57a (diff)
[PATCH] Direct Migration V9: remove_from_swap() to remove swap ptes
Add remove_from_swap remove_from_swap() allows the restoration of the pte entries that existed before page migration occurred for anonymous pages by walking the reverse maps. This reduces swap use and establishes regular pte's without the need for page faults. 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 'include/linux/rmap.h')
-rw-r--r--include/linux/rmap.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index 0f1ea2d6ed86..d6b9bcd1384c 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -92,6 +92,7 @@ static inline void page_dup_rmap(struct page *page)
92 */ 92 */
93int page_referenced(struct page *, int is_locked); 93int page_referenced(struct page *, int is_locked);
94int try_to_unmap(struct page *, int ignore_refs); 94int try_to_unmap(struct page *, int ignore_refs);
95void remove_from_swap(struct page *page);
95 96
96/* 97/*
97 * Called from mm/filemap_xip.c to unmap empty zero page 98 * Called from mm/filemap_xip.c to unmap empty zero page