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authorJoel Becker <joel.becker@oracle.com>2008-08-20 19:36:33 -0700
committerMark Fasheh <mfasheh@suse.com>2008-10-13 16:57:05 -0700
commitf99b9b7ccf6a691f653cec45f36bfdd1e94769c7 (patch)
tree1c6ff6ea1fa1bb86b70f1fd78dd725b559c729e4 /fs/ocfs2/suballoc.c
parent1e61ee79e2a96f62c007486677319814ce621c3c (diff)
ocfs2: Make ocfs2_extent_tree the first-class representation of a tree.
We now have three different kinds of extent trees in ocfs2: inode data (dinode), extended attributes (xattr_tree), and extended attribute values (xattr_value). There is a nice abstraction for them, ocfs2_extent_tree, but it is hidden in alloc.c. All the calling functions have to pick amongst a varied API and pass in type bits and often extraneous pointers. A better way is to make ocfs2_extent_tree a first-class object. Everyone converts their object to an ocfs2_extent_tree() via the ocfs2_get_*_extent_tree() calls, then uses the ocfs2_extent_tree for all tree calls to alloc.c. This simplifies a lot of callers, making for readability. It also provides an easy way to add additional extent tree types, as they only need to be defined in alloc.c with a ocfs2_get_<new>_extent_tree() function. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/suballoc.c')
-rw-r--r--fs/ocfs2/suballoc.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index f1871ca83815..8d3947e94a2e 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -1914,12 +1914,11 @@ static inline void ocfs2_debug_suballoc_inode(struct ocfs2_dinode *fe)
* File systems which don't support holes call this from
* ocfs2_extend_allocation().
*/
-int ocfs2_lock_allocators(struct inode *inode, struct buffer_head *root_bh,
- struct ocfs2_extent_list *root_el,
+int ocfs2_lock_allocators(struct inode *inode,
+ struct ocfs2_extent_tree *et,
u32 clusters_to_add, u32 extents_to_split,
struct ocfs2_alloc_context **data_ac,
- struct ocfs2_alloc_context **meta_ac,
- enum ocfs2_extent_tree_type type, void *private)
+ struct ocfs2_alloc_context **meta_ac)
{
int ret = 0, num_free_extents;
unsigned int max_recs_needed = clusters_to_add + 2 * extents_to_split;
@@ -1931,8 +1930,7 @@ int ocfs2_lock_allocators(struct inode *inode, struct buffer_head *root_bh,
BUG_ON(clusters_to_add != 0 && data_ac == NULL);
- num_free_extents = ocfs2_num_free_extents(osb, inode, root_bh,
- type, private);
+ num_free_extents = ocfs2_num_free_extents(osb, inode, et);
if (num_free_extents < 0) {
ret = num_free_extents;
mlog_errno(ret);
@@ -1954,7 +1952,7 @@ int ocfs2_lock_allocators(struct inode *inode, struct buffer_head *root_bh,
*/
if (!num_free_extents ||
(ocfs2_sparse_alloc(osb) && num_free_extents < max_recs_needed)) {
- ret = ocfs2_reserve_new_metadata(osb, root_el, meta_ac);
+ ret = ocfs2_reserve_new_metadata(osb, et->et_root_el, meta_ac);
if (ret < 0) {
if (ret != -ENOSPC)
mlog_errno(ret);