Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

[pandora-kernel.git] / fs / ocfs2 / alloc.c

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 9edcde4..ab513dd 100644 (file)
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -1914,7 +1914,8 @@ static void ocfs2_adjust_adjacent_records(struct ocfs2_extent_rec *left_rec,
         * immediately to their right.
         */
        left_clusters = le32_to_cpu(right_child_el->l_recs[0].e_cpos);
-       if (ocfs2_is_empty_extent(&right_child_el->l_recs[0])) {
+       if (!ocfs2_rec_clusters(right_child_el, &right_child_el->l_recs[0])) {
+               BUG_ON(right_child_el->l_tree_depth);
                BUG_ON(le16_to_cpu(right_child_el->l_next_free_rec) <= 1);
                left_clusters = le32_to_cpu(right_child_el->l_recs[1].e_cpos);
        }
@@ -2476,15 +2477,37 @@ out_ret_path:
        return ret;
 }
 
-static void ocfs2_update_edge_lengths(struct inode *inode, handle_t *handle,
-                                     struct ocfs2_path *path)
+static int ocfs2_update_edge_lengths(struct inode *inode, handle_t *handle,
+                                    int subtree_index, struct ocfs2_path *path)
 {
-       int i, idx;
+       int i, idx, ret;
        struct ocfs2_extent_rec *rec;
        struct ocfs2_extent_list *el;
        struct ocfs2_extent_block *eb;
        u32 range;
 
+       /*
+        * In normal tree rotation process, we will never touch the
+        * tree branch above subtree_index and ocfs2_extend_rotate_transaction
+        * doesn't reserve the credits for them either.
+        *
+        * But we do have a special case here which will update the rightmost
+        * records for all the bh in the path.
+        * So we have to allocate extra credits and access them.
+        */
+       ret = ocfs2_extend_trans(handle,
+                                handle->h_buffer_credits + subtree_index);
+       if (ret) {
+               mlog_errno(ret);
+               goto out;
+       }
+
+       ret = ocfs2_journal_access_path(inode, handle, path);
+       if (ret) {
+               mlog_errno(ret);
+               goto out;
+       }
+
        /* Path should always be rightmost. */
        eb = (struct ocfs2_extent_block *)path_leaf_bh(path)->b_data;
        BUG_ON(eb->h_next_leaf_blk != 0ULL);
@@ -2505,6 +2528,8 @@ static void ocfs2_update_edge_lengths(struct inode *inode, handle_t *handle,
 
                ocfs2_journal_dirty(handle, path->p_node[i].bh);
        }
+out:
+       return ret;
 }
 
 static void ocfs2_unlink_path(struct inode *inode, handle_t *handle,
@@ -2717,7 +2742,12 @@ static int ocfs2_rotate_subtree_left(struct inode *inode, handle_t *handle,
        if (del_right_subtree) {
                ocfs2_unlink_subtree(inode, handle, left_path, right_path,
                                     subtree_index, dealloc);
-               ocfs2_update_edge_lengths(inode, handle, left_path);
+               ret = ocfs2_update_edge_lengths(inode, handle, subtree_index,
+                                               left_path);
+               if (ret) {
+                       mlog_errno(ret);
+                       goto out;
+               }
 
                eb = (struct ocfs2_extent_block *)path_leaf_bh(left_path)->b_data;
                ocfs2_et_set_last_eb_blk(et, le64_to_cpu(eb->h_blkno));
@@ -3034,7 +3064,12 @@ static int ocfs2_remove_rightmost_path(struct inode *inode, handle_t *handle,
 
                ocfs2_unlink_subtree(inode, handle, left_path, path,
                                     subtree_index, dealloc);
-               ocfs2_update_edge_lengths(inode, handle, left_path);
+               ret = ocfs2_update_edge_lengths(inode, handle, subtree_index,
+                                               left_path);
+               if (ret) {
+                       mlog_errno(ret);
+                       goto out;
+               }
 
                eb = (struct ocfs2_extent_block *)path_leaf_bh(left_path)->b_data;
                ocfs2_et_set_last_eb_blk(et, le64_to_cpu(eb->h_blkno));
@@ -6816,7 +6851,7 @@ static int ocfs2_do_truncate(struct ocfs2_super *osb,
        }
        status = 0;
 bail:
-
+       brelse(last_eb_bh);
        mlog_exit(status);
        return status;
 }