diff options
| 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 /fs/ext3 | |
| parent | 7e2ab150d1b3b286a4c864c60a549b2601777b63 (diff) | |
| download | lwn-e965f9630c651fa4249039fd4b80c9392d07a856.tar.gz lwn-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 'fs/ext3')
| -rw-r--r-- | fs/ext3/inode.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index 8824e84f8a56..3fc4238e9703 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -1559,6 +1559,7 @@ static struct address_space_operations ext3_ordered_aops = { .invalidatepage = ext3_invalidatepage, .releasepage = ext3_releasepage, .direct_IO = ext3_direct_IO, + .migratepage = buffer_migrate_page, }; static struct address_space_operations ext3_writeback_aops = { @@ -1572,6 +1573,7 @@ static struct address_space_operations ext3_writeback_aops = { .invalidatepage = ext3_invalidatepage, .releasepage = ext3_releasepage, .direct_IO = ext3_direct_IO, + .migratepage = buffer_migrate_page, }; static struct address_space_operations ext3_journalled_aops = { |