From: Joel Becker Date: Thu, 21 Aug 2008 00:44:24 +0000 (-0700) Subject: ocfs2: Create specific get_extent_tree functions. X-Git-Tag: v2.6.28-rc1~572^2~27 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=1a09f556e5415a29cdddaf9a6ebf474194161cf3;p=linux-2.6-omap-h63xx.git ocfs2: Create specific get_extent_tree functions. A caller knows what kind of extent tree they have. There's no reason they have to call ocfs2_get_extent_tree() with a NULL when they could just as easily call a specific function to their type of extent tree. Introduce ocfs2_dinode_get_extent_tree(), ocfs2_xattr_tree_get_extent_tree(), and ocfs2_xattr_value_get_extent_tree(). They only take the necessary arguments, calling into the underlying __ocfs2_get_extent_tree() to do the real work. __ocfs2_get_extent_tree() is the old ocfs2_get_extent_tree(), but without needing any switch-by-type logic. ocfs2_get_extent_tree() is now a wrapper around the specific calls. It exists because a couple alloc.c functions can take et_type. This will go later. Another benefit is that ocfs2_xattr_value_get_extent_tree() can take a struct ocfs2_xattr_value_root* instead of void*. This gives us typechecking where we didn't have it before. Signed-off-by: Joel Becker Signed-off-by: Mark Fasheh --- diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 64f1af4e999..7b08180a4c6 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -192,7 +192,7 @@ static int ocfs2_xattr_value_sanity_check(struct inode *inode, return 0; } -static struct ocfs2_extent_tree_operations ocfs2_xattr_et_ops = { +static struct ocfs2_extent_tree_operations ocfs2_xattr_value_et_ops = { .eo_set_last_eb_blk = ocfs2_xattr_value_set_last_eb_blk, .eo_get_last_eb_blk = ocfs2_xattr_value_get_last_eb_blk, .eo_update_clusters = ocfs2_xattr_value_update_clusters, @@ -256,27 +256,21 @@ static struct ocfs2_extent_tree_operations ocfs2_xattr_tree_et_ops = { .eo_fill_max_leaf_clusters = ocfs2_xattr_tree_fill_max_leaf_clusters, }; -static void ocfs2_get_extent_tree(struct ocfs2_extent_tree *et, - struct inode *inode, - struct buffer_head *bh, - enum ocfs2_extent_tree_type et_type, - void *obj) +static void __ocfs2_get_extent_tree(struct ocfs2_extent_tree *et, + struct inode *inode, + struct buffer_head *bh, + void *obj, + enum ocfs2_extent_tree_type et_type, + struct ocfs2_extent_tree_operations *ops) { et->et_type = et_type; + et->et_ops = ops; get_bh(bh); et->et_root_bh = bh; if (!obj) obj = (void *)bh->b_data; et->et_object = obj; - if (et_type == OCFS2_DINODE_EXTENT) { - et->et_ops = &ocfs2_dinode_et_ops; - } else if (et_type == OCFS2_XATTR_VALUE_EXTENT) { - 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_ops->eo_fill_root_el(et); if (!et->et_ops->eo_fill_max_leaf_clusters) et->et_max_leaf_clusters = 0; @@ -284,6 +278,49 @@ static void ocfs2_get_extent_tree(struct ocfs2_extent_tree *et, et->et_ops->eo_fill_max_leaf_clusters(inode, et); } +static void ocfs2_get_dinode_extent_tree(struct ocfs2_extent_tree *et, + struct inode *inode, + struct buffer_head *bh) +{ + __ocfs2_get_extent_tree(et, inode, bh, NULL, OCFS2_DINODE_EXTENT, + &ocfs2_dinode_et_ops); +} + +static void ocfs2_get_xattr_tree_extent_tree(struct ocfs2_extent_tree *et, + struct inode *inode, + struct buffer_head *bh) +{ + __ocfs2_get_extent_tree(et, inode, bh, NULL, + OCFS2_XATTR_TREE_EXTENT, + &ocfs2_xattr_tree_et_ops); +} + +static void ocfs2_get_xattr_value_extent_tree(struct ocfs2_extent_tree *et, + struct inode *inode, + struct buffer_head *bh, + struct ocfs2_xattr_value_root *xv) +{ + __ocfs2_get_extent_tree(et, inode, bh, xv, + OCFS2_XATTR_VALUE_EXTENT, + &ocfs2_xattr_value_et_ops); +} + +static void ocfs2_get_extent_tree(struct ocfs2_extent_tree *et, + struct inode *inode, + struct buffer_head *bh, + enum ocfs2_extent_tree_type et_type, + void *obj) +{ + if (et_type == OCFS2_DINODE_EXTENT) + ocfs2_get_dinode_extent_tree(et, inode, bh); + else if (et_type == OCFS2_XATTR_VALUE_EXTENT) + ocfs2_get_xattr_tree_extent_tree(et, inode, bh); + else if (et_type == OCFS2_XATTR_TREE_EXTENT) + ocfs2_get_xattr_value_extent_tree(et, inode, bh, obj); + else + BUG(); +} + static void ocfs2_put_extent_tree(struct ocfs2_extent_tree *et) { brelse(et->et_root_bh); @@ -4432,8 +4469,7 @@ int ocfs2_dinode_insert_extent(struct ocfs2_super *osb, int status; struct ocfs2_extent_tree et; - ocfs2_get_extent_tree(&et, inode, root_bh, OCFS2_DINODE_EXTENT, - NULL); + ocfs2_get_dinode_extent_tree(&et, inode, root_bh); status = ocfs2_insert_extent(osb, handle, inode, root_bh, cpos, start_blk, new_clusters, flags, meta_ac, &et); @@ -4451,13 +4487,12 @@ int ocfs2_xattr_value_insert_extent(struct ocfs2_super *osb, u32 new_clusters, u8 flags, struct ocfs2_alloc_context *meta_ac, - void *obj) + struct ocfs2_xattr_value_root *xv) { int status; struct ocfs2_extent_tree et; - ocfs2_get_extent_tree(&et, inode, root_bh, - OCFS2_XATTR_VALUE_EXTENT, obj); + ocfs2_get_xattr_value_extent_tree(&et, inode, root_bh, xv); status = ocfs2_insert_extent(osb, handle, inode, root_bh, cpos, start_blk, new_clusters, flags, meta_ac, &et); @@ -4479,8 +4514,7 @@ int ocfs2_xattr_tree_insert_extent(struct ocfs2_super *osb, int status; struct ocfs2_extent_tree et; - ocfs2_get_extent_tree(&et, inode, root_bh, OCFS2_XATTR_TREE_EXTENT, - NULL); + ocfs2_get_xattr_tree_extent_tree(&et, inode, root_bh); status = ocfs2_insert_extent(osb, handle, inode, root_bh, cpos, start_blk, new_clusters, flags, meta_ac, &et); diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h index 23c695ddaa5..5cc9a83cf1a 100644 --- a/fs/ocfs2/alloc.h +++ b/fs/ocfs2/alloc.h @@ -56,7 +56,7 @@ int ocfs2_xattr_value_insert_extent(struct ocfs2_super *osb, u32 new_clusters, u8 flags, struct ocfs2_alloc_context *meta_ac, - void *private); + struct ocfs2_xattr_value_root *xv); int ocfs2_xattr_tree_insert_extent(struct ocfs2_super *osb, handle_t *handle, struct inode *inode,