ocfs2: btree changes for unwritten extents

Writes to a region marked as unwritten might result in a record split or
merge. We can support splits by making minor changes to the existing insert
code. Merges require left rotations which mostly re-use right rotation
support functions.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 0 insertions, 31 deletions

diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index e23e416ca74c..03c1d365c78b 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -373,37 +373,6 @@ out:
         return ret;
 }
 
-/*
- * Return the index of the extent record which contains cluster #v_cluster.
- * -1 is returned if it was not found.
- *
- * Should work fine on interior and exterior nodes.
- */
-static int ocfs2_search_extent_list(struct ocfs2_extent_list *el,
-                                    u32 v_cluster)
-{
-        int ret = -1;
-        int i;
-        struct ocfs2_extent_rec *rec;
-        u32 rec_end, rec_start, clusters;
-
-        for(i = 0; i < le16_to_cpu(el->l_next_free_rec); i++) {
-                rec = &el->l_recs[i];
-
-                rec_start = le32_to_cpu(rec->e_cpos);
-                clusters = ocfs2_rec_clusters(el, rec);
-
-                rec_end = rec_start + clusters;
-
-                if (v_cluster >= rec_start && v_cluster < rec_end) {
-                        ret = i;
-                        break;
-                }
-        }
-
-        return ret;
-}
-
 int ocfs2_get_clusters(struct inode *inode, u32 v_cluster,
                        u32 *p_cluster, u32 *num_clusters,
                        unsigned int *extent_flags)