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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/dir.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/dir.c')
-rw-r--r--fs/ocfs2/dir.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 5426a02c12bb..2cdc55390348 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -1192,6 +1192,9 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
struct buffer_head *dirdata_bh = NULL;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
handle_t *handle;
+ struct ocfs2_extent_tree et;
+
+ ocfs2_get_dinode_extent_tree(&et, dir, di_bh);
alloc = ocfs2_clusters_for_bytes(sb, bytes);
@@ -1305,8 +1308,8 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
* This should never fail as our extent list is empty and all
* related blocks have been journaled already.
*/
- ret = ocfs2_dinode_insert_extent(osb, handle, dir, di_bh, 0, blkno,
- len, 0, NULL);
+ ret = ocfs2_insert_extent(osb, handle, dir, &et, 0, blkno, len,
+ 0, NULL);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -1337,8 +1340,8 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
}
blkno = ocfs2_clusters_to_blocks(dir->i_sb, bit_off);
- ret = ocfs2_dinode_insert_extent(osb, handle, dir, di_bh, 1,
- blkno, len, 0, NULL);
+ ret = ocfs2_insert_extent(osb, handle, dir, &et, 1,
+ blkno, len, 0, NULL);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -1360,6 +1363,7 @@ out:
brelse(dirdata_bh);
+ ocfs2_put_extent_tree(&et);
return ret;
}
@@ -1437,6 +1441,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
struct buffer_head *new_bh = NULL;
struct ocfs2_dir_entry * de;
struct super_block *sb = osb->sb;
+ struct ocfs2_extent_tree et;
mlog_entry_void();
@@ -1480,10 +1485,9 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
spin_lock(&OCFS2_I(dir)->ip_lock);
if (dir_i_size == ocfs2_clusters_to_bytes(sb, OCFS2_I(dir)->ip_clusters)) {
spin_unlock(&OCFS2_I(dir)->ip_lock);
- num_free_extents = ocfs2_num_free_extents(osb, dir,
- parent_fe_bh,
- OCFS2_DINODE_EXTENT,
- NULL);
+ ocfs2_get_dinode_extent_tree(&et, dir, parent_fe_bh);
+ num_free_extents = ocfs2_num_free_extents(osb, dir, &et);
+ ocfs2_put_extent_tree(&et);
if (num_free_extents < 0) {
status = num_free_extents;
mlog_errno(status);