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    Subject[patch 12/21] Filesystem: Ext2 filesystem defrag
    Support defragmentation for ext2 filesystem inodes

    Reviewed-by: Rik van Riel <riel@redhat.com>
    Signed-off-by: Christoph Lameter <clameter@sgi.com>
    ---
    fs/ext2/super.c | 9 +++++++++
    1 file changed, 9 insertions(+)

    Index: linux-2.6/fs/ext2/super.c
    ===================================================================
    --- linux-2.6.orig/fs/ext2/super.c 2008-05-07 21:23:41.931409650 -0700
    +++ linux-2.6/fs/ext2/super.c 2008-05-07 21:24:42.951410526 -0700
    @@ -170,6 +170,12 @@ static void init_once(struct kmem_cache
    inode_init_once(&ei->vfs_inode);
    }

    +static void *ext2_get_inodes(struct kmem_cache *s, int nr, void **v)
    +{
    + return fs_get_inodes(s, nr, v,
    + offsetof(struct ext2_inode_info, vfs_inode));
    +}
    +
    static int init_inodecache(void)
    {
    ext2_inode_cachep = kmem_cache_create("ext2_inode_cache",
    @@ -179,6 +185,9 @@ static int init_inodecache(void)
    init_once);
    if (ext2_inode_cachep == NULL)
    return -ENOMEM;
    +
    + kmem_cache_setup_defrag(ext2_inode_cachep,
    + ext2_get_inodes, kick_inodes);
    return 0;
    }

    --


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