diff options
author | Tao Ma <tao.ma@oracle.com> | 2008-08-18 13:38:43 +0400 |
---|---|---|
committer | Mark Fasheh <mfasheh@suse.com> | 2008-10-14 00:57:58 +0400 |
commit | 811f933df1e55615fd0bb4818f31e3868a8e6e23 (patch) | |
tree | 53335e59bdff02d7ddb3a2ec15d36239fe50003d /fs/ocfs2/alloc.h | |
parent | 231b87d10920e024efaf0f9e86e1bab7bced1620 (diff) | |
download | linux-811f933df1e55615fd0bb4818f31e3868a8e6e23.tar.xz |
ocfs2: Use ocfs2_extent_list instead of ocfs2_dinode.
ocfs2_extend_meta_needed(), ocfs2_calc_extend_credits() and
ocfs2_reserve_new_metadata() are all useful for extent tree operations. But
they are all limited to an inode btree because they use a struct
ocfs2_dinode parameter. Change their parameter to struct ocfs2_extent_list
(the part of an ocfs2_dinode they actually use) so that the xattr btree code
can use these functions.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/alloc.h')
-rw-r--r-- | fs/ocfs2/alloc.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h index 5c0f764b59ec..a0e334f10cd1 100644 --- a/fs/ocfs2/alloc.h +++ b/fs/ocfs2/alloc.h @@ -48,8 +48,14 @@ int ocfs2_remove_extent(struct inode *inode, struct buffer_head *di_bh, int ocfs2_num_free_extents(struct ocfs2_super *osb, struct inode *inode, struct buffer_head *bh); -/* how many new metadata chunks would an allocation need at maximum? */ -static inline int ocfs2_extend_meta_needed(struct ocfs2_dinode *fe) +/* + * how many new metadata chunks would an allocation need at maximum? + * + * Please note that the caller must make sure that root_el is the root + * of extent tree. So for an inode, it should be &fe->id2.i_list. Otherwise + * the result may be wrong. + */ +static inline int ocfs2_extend_meta_needed(struct ocfs2_extent_list *root_el) { /* * Rather than do all the work of determining how much we need @@ -59,7 +65,7 @@ static inline int ocfs2_extend_meta_needed(struct ocfs2_dinode *fe) * new tree_depth==0 extent_block, and one block at the new * top-of-the tree. */ - return le16_to_cpu(fe->id2.i_list.l_tree_depth) + 2; + return le16_to_cpu(root_el->l_tree_depth) + 2; } void ocfs2_dinode_new_extent_list(struct inode *inode, struct ocfs2_dinode *di); |