diff options
author | Joel Becker <joel.becker@oracle.com> | 2008-08-20 19:36:33 -0700 |
---|---|---|
committer | Mark Fasheh <mfasheh@suse.com> | 2008-10-13 16:57:05 -0700 |
commit | f99b9b7ccf6a691f653cec45f36bfdd1e94769c7 (patch) | |
tree | 1c6ff6ea1fa1bb86b70f1fd78dd725b559c729e4 /fs/ocfs2/dir.c | |
parent | 1e61ee79e2a96f62c007486677319814ce621c3c (diff) | |
download | lwn-f99b9b7ccf6a691f653cec45f36bfdd1e94769c7.tar.gz lwn-f99b9b7ccf6a691f653cec45f36bfdd1e94769c7.zip |
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.c | 20 |
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); |