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| author |   Christoph Lameter <clameter@sgi.com> | 2006-02-01 03:05:41 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-01 08:53:17 -0800 |
| commit | e965f9630c651fa4249039fd4b80c9392d07a856 (patch) | |
| tree | 1353dd536d0ee549c30e462086624c21788ee9d2 /mm/rmap.c | |
| parent | [PATCH] Direct Migration V9: upgrade MPOL_MF_MOVE and sys_migrate_pages() (diff) | |
| download | linux-dev-e965f9630c651fa4249039fd4b80c9392d07a856.tar.xz linux-dev-e965f9630c651fa4249039fd4b80c9392d07a856.zip | |
[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.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index f4b91d7aa5cf..df2c41c2a9a2 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 /* |