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ocfs2: Determine an extent tree's max_leaf_clusters in an et_op. 

Provide an optional extent_tree_operation to specify the
max_leaf_clusters of an ocfs2_extent_tree.  If not provided, the value
is 0 (unlimited).

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Joel Becker 2008-08-20 17:31:10 -07:00 committed by Mark Fasheh
parent 1c25d93a4a
commit 943cced39e
1 changed files with 15 additions and 3 deletions
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18
fs/ocfs2/alloc.c
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@ -76,6 +76,8 @@ struct ocfs2_extent_tree_operations {
/* These are internal to ocfs2_extent_tree and don't have
* accessor functions */
void (*eo_fill_root_el)(struct ocfs2_extent_tree *et);
void (*eo_fill_max_leaf_clusters)(struct inode *inode,
struct ocfs2_extent_tree *et);
};
struct ocfs2_extent_tree {
@ -205,6 +207,14 @@ static void ocfs2_xattr_tree_fill_root_el(struct ocfs2_extent_tree *et)
et->et_root_el = &xb->xb_attrs.xb_root.xt_list;
}
static void ocfs2_xattr_tree_fill_max_leaf_clusters(struct inode *inode,
struct ocfs2_extent_tree *et)
{
et->et_max_leaf_clusters =
ocfs2_clusters_for_bytes(inode->i_sb,
OCFS2_MAX_XATTR_TREE_LEAF_SIZE);
}
static void ocfs2_xattr_tree_set_last_eb_blk(struct ocfs2_extent_tree *et,
u64 blkno)
{
@ -243,6 +253,7 @@ static struct ocfs2_extent_tree_operations ocfs2_xattr_tree_et_ops = {
.eo_update_clusters = ocfs2_xattr_tree_update_clusters,
.eo_sanity_check = ocfs2_xattr_tree_sanity_check,
.eo_fill_root_el = ocfs2_xattr_tree_fill_root_el,
.eo_fill_max_leaf_clusters = ocfs2_xattr_tree_fill_max_leaf_clusters,
};
static void ocfs2_get_extent_tree(struct ocfs2_extent_tree *et,
@ -254,7 +265,6 @@ static void ocfs2_get_extent_tree(struct ocfs2_extent_tree *et,
et->et_type = et_type;
get_bh(bh);
et->et_root_bh = bh;
et->et_max_leaf_clusters = 0;
if (!obj)
obj = (void *)bh->b_data;
et->et_object = obj;
@ -265,11 +275,13 @@ static void ocfs2_get_extent_tree(struct ocfs2_extent_tree *et,
et->et_ops = &ocfs2_xattr_et_ops;
} else if (et_type == OCFS2_XATTR_TREE_EXTENT) {
et->et_ops = &ocfs2_xattr_tree_et_ops;
et->et_max_leaf_clusters = ocfs2_clusters_for_bytes(inode->i_sb,
OCFS2_MAX_XATTR_TREE_LEAF_SIZE);
}
et->et_ops->eo_fill_root_el(et);
if (!et->et_ops->eo_fill_max_leaf_clusters)
et->et_max_leaf_clusters = 0;
else
et->et_ops->eo_fill_max_leaf_clusters(inode, et);
}
static void ocfs2_put_extent_tree(struct ocfs2_extent_tree *et)