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authorMark Fasheh <mark.fasheh@oracle.com>2007-06-18 10:48:04 -0700
committerMark Fasheh <mark.fasheh@oracle.com>2007-07-10 17:32:00 -0700
commit328d5752e1259dfb29b7e65f6c2d145fddbaa750 (patch)
tree08198271a0382cafcc4c0de2fc1efcf35cb400af /fs/ocfs2/extent_map.c
parentc3afcbb34426a9291e4c038540129053a72c3cd8 (diff)
downloadop-kernel-dev-328d5752e1259dfb29b7e65f6c2d145fddbaa750.zip
op-kernel-dev-328d5752e1259dfb29b7e65f6c2d145fddbaa750.tar.gz
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>
Diffstat (limited to 'fs/ocfs2/extent_map.c')
-rw-r--r--fs/ocfs2/extent_map.c31
1 files changed, 0 insertions, 31 deletions
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index e23e416..03c1d365 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)
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