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authorTao Ma <tao.ma@oracle.com>2008-08-18 05:38:48 -0400
committerMark Fasheh <mfasheh@suse.com>2008-10-13 19:57:01 -0400
commitf56654c435c06f2b2bd5751889b1a08a3add7d6c (patch)
treeb186d68aedc5dda7afe435f5a68c03937ae382ff /fs/ocfs2/suballoc.h
parentac11c827192272eabb68b8f4cf844066461d9690 (diff)
ocfs2: Add extent tree operation for xattr value btrees
Add some thin wrappers around ocfs2_insert_extent() for each of the 3 different btree types, ocfs2_inode_insert_extent(), ocfs2_xattr_value_insert_extent() and ocfs2_xattr_tree_insert_extent(). The last is for the xattr index btree, which will be used in a followup patch. All the old callers in file.c etc will call ocfs2_dinode_insert_extent(), while the other two handle the xattr issue. And the init of extent tree are handled by these functions. When storing xattr value which is too large, we will allocate some clusters for it and here ocfs2_extent_list and ocfs2_extent_rec will also be used. In order to re-use the b-tree operation code, a new parameter named "private" is added into ocfs2_extent_tree and it is used to indicate the root of ocfs2_exent_list. The reason is that we can't deduce the root from the buffer_head now. It may be in an inode, an ocfs2_xattr_block or even worse, in any place in an ocfs2_xattr_bucket. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/suballoc.h')
-rw-r--r--fs/ocfs2/suballoc.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h
index a3e531e62df2..9e026c8afee4 100644
--- a/fs/ocfs2/suballoc.h
+++ b/fs/ocfs2/suballoc.h
@@ -166,5 +166,6 @@ int ocfs2_lock_allocators(struct inode *inode, struct buffer_head *root_bh,
166 struct ocfs2_extent_list *root_el, 166 struct ocfs2_extent_list *root_el,
167 u32 clusters_to_add, u32 extents_to_split, 167 u32 clusters_to_add, u32 extents_to_split,
168 struct ocfs2_alloc_context **data_ac, 168 struct ocfs2_alloc_context **data_ac,
169 struct ocfs2_alloc_context **meta_ac); 169 struct ocfs2_alloc_context **meta_ac,
170 enum ocfs2_extent_tree_type type, void *private);
170#endif /* _CHAINALLOC_H_ */ 171#endif /* _CHAINALLOC_H_ */