- * Find the given page, and call find_dirent() in order to try to
- * return the next entry.
+ * Given a pointer to a buffer that has already been filled by a call
+ * to readdir, find the entry at offset 'desc->target_index'.
+ *
+ * If the end of the buffer has been reached, return -EAGAIN, if not,
+ * return the offset within the buffer of the next entry to be
+ * read.
+ */
+static inline
+int find_dirent_index(nfs_readdir_descriptor_t *desc)
+{
+ struct nfs_entry *entry = desc->entry;
+ int loop_count = 0,
+ status;
+
+ for(;;) {
+ status = dir_decode(desc);
+ if (status)
+ break;
+
+ dfprintk(VFS, "NFS: found cookie %Lu at index %d\n", (long long)entry->cookie, desc->current_index);
+
+ if (desc->target_index == desc->current_index) {
+ desc->target_cookie = entry->cookie;
+ break;
+ }
+ desc->current_index++;
+ if (loop_count++ > 200) {
+ loop_count = 0;
+ schedule();
+ }
+ }
+ dfprintk(VFS, "NFS: find_dirent_index() returns %d\n", status);
+ return status;
+}
+
+/*
+ * Find the given page, and call find_dirent() or find_dirent_index in
+ * order to try to return the next entry.