ocfs2: make room for unwritten extents flag

[powerpc.git] / fs / ocfs2 / extent_map.c

diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 937c272..ea0ce41 100644 (file)
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -50,13 +50,15 @@ static int ocfs2_search_extent_list(struct ocfs2_extent_list *el,
        int ret = -1;
        int i;
        struct ocfs2_extent_rec *rec;
-       u32 rec_end, rec_start;
+       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);
-               rec_end = rec_start + le32_to_cpu(rec->e_clusters);
+               clusters = ocfs2_rec_clusters(el, rec);
+
+               rec_end = rec_start + clusters;
 
                if (v_cluster >= rec_start && v_cluster < rec_end) {
                        ret = i;
@@ -98,6 +100,15 @@ int ocfs2_get_clusters(struct inode *inode, u32 v_cluster,
 
                eb = (struct ocfs2_extent_block *) eb_bh->b_data;
                el = &eb->h_list;
+
+               if (el->l_tree_depth) {
+                       ocfs2_error(inode->i_sb,
+                                   "Inode %lu has non zero tree depth in "
+                                   "leaf block %llu\n", inode->i_ino,
+                                   (unsigned long long)eb_bh->b_blocknr);
+                       ret = -EROFS;
+                       goto out;
+               }
        }
 
        i = ocfs2_search_extent_list(el, v_cluster);
@@ -118,7 +129,7 @@ int ocfs2_get_clusters(struct inode *inode, u32 v_cluster,
                        ocfs2_error(inode->i_sb, "Inode %lu has bad extent "
                                    "record (%u, %u, 0)", inode->i_ino,
                                    le32_to_cpu(rec->e_cpos),
-                                   le32_to_cpu(rec->e_clusters));
+                                   ocfs2_rec_clusters(el, rec));
                        ret = -EROFS;
                        goto out;
                }
@@ -130,7 +141,7 @@ int ocfs2_get_clusters(struct inode *inode, u32 v_cluster,
                *p_cluster = *p_cluster + coff;
 
                if (num_clusters)
-                       *num_clusters = le32_to_cpu(rec->e_clusters) - coff;
+                       *num_clusters = ocfs2_rec_clusters(el, rec) - coff;
        }
 
 out: