From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tao Ma Date: Fri, 27 Jun 2008 15:02:04 +0800 Subject: [Ocfs2-devel] [PATCH 10/15] Add xattr tree operations in ocfs2_extent_tree.v2 In-Reply-To: <48648B3E.6050808@oracle.com> Message-ID: <20080627070204.GA20364@tma-pc2.cn.oracle.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ocfs2-devel@oss.oracle.com ocfs2_xattr_block will use ocfs2_extent_list to store large numbers of EAs. So add a new type in ocfs2_extent_tree_type and add one new ocfs_extent_tree implementation so that it can use b-tree code to handle the storage of many EAs. Signed-off-by: Tao Ma --- fs/ocfs2/alloc.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++ fs/ocfs2/alloc.h | 1 + 2 files changed, 54 insertions(+), 0 deletions(-) diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 2df5a7f..d93b7da 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -177,6 +177,48 @@ static struct ocfs2_extent_tree_operations ocfs2_xattr_et_ops = { .sanity_check = ocfs2_xattr_value_sanity_check, }; +static void ocfs2_xattr_tree_set_last_eb_blk(struct ocfs2_extent_tree *et, + u64 blkno) +{ + struct ocfs2_xattr_block *xb = + (struct ocfs2_xattr_block *) et->root_bh->b_data; + struct ocfs2_xattr_tree_root *xt = &xb->xb_attrs.xb_root; + + xt->xt_last_eb_blk = cpu_to_le64(blkno); +} + +static u64 ocfs2_xattr_tree_get_last_eb_blk(struct ocfs2_extent_tree *et) +{ + struct ocfs2_xattr_block *xb = + (struct ocfs2_xattr_block *) et->root_bh->b_data; + struct ocfs2_xattr_tree_root *xt = &xb->xb_attrs.xb_root; + + return le64_to_cpu(xt->xt_last_eb_blk); +} + +static void ocfs2_xattr_tree_update_clusters(struct inode *inode, + struct ocfs2_extent_tree *et, + u32 clusters) +{ + struct ocfs2_xattr_block *xb = + (struct ocfs2_xattr_block *)et->root_bh->b_data; + + le32_add_cpu(&xb->xb_attrs.xb_root.xt_clusters, clusters); +} + +static int ocfs2_xattr_tree_sanity_check(struct inode *inode, + struct ocfs2_extent_tree *et) +{ + return 0; +} + +static struct ocfs2_extent_tree_operations ocfs2_xattr_tree_et_ops = { + .set_last_eb_blk = ocfs2_xattr_tree_set_last_eb_blk, + .get_last_eb_blk = ocfs2_xattr_tree_get_last_eb_blk, + .update_clusters = ocfs2_xattr_tree_update_clusters, + .sanity_check = ocfs2_xattr_tree_sanity_check, +}; + static struct ocfs2_extent_tree* ocfs2_new_extent_tree(struct buffer_head *bh, enum ocfs2_extent_tree_type et_type, @@ -201,6 +243,11 @@ static struct ocfs2_extent_tree* (struct ocfs2_xattr_value_root *) private; et->root_el = &xv->xr_list; et->eops = &ocfs2_xattr_et_ops; + } else if (et_type == OCFS2_XATTR_TREE_EXTENT) { + struct ocfs2_xattr_block *xb = + (struct ocfs2_xattr_block *)bh->b_data; + et->root_el = &xb->xb_attrs.xb_root.xt_list; + et->eops = &ocfs2_xattr_tree_et_ops; } return et; @@ -570,6 +617,12 @@ int ocfs2_num_free_extents(struct ocfs2_super *osb, last_eb_blk = le64_to_cpu(xv->xr_last_eb_blk); el = &xv->xr_list; + } else if (type == OCFS2_XATTR_TREE_EXTENT) { + struct ocfs2_xattr_block *xb = + (struct ocfs2_xattr_block *)root_bh->b_data; + + last_eb_blk = le64_to_cpu(xb->xb_attrs.xb_root.xt_last_eb_blk); + el = &xb->xb_attrs.xb_root.xt_list; } if (last_eb_blk) { diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h index b50ace5..7587f0e 100644 --- a/fs/ocfs2/alloc.h +++ b/fs/ocfs2/alloc.h @@ -29,6 +29,7 @@ enum ocfs2_extent_tree_type { OCFS2_DINODE_EXTENT = 0, OCFS2_XATTR_VALUE_EXTENT, + OCFS2_XATTR_TREE_EXTENT, }; struct ocfs2_alloc_context; -- 1.5.4.GIT