diff --git a/fs/inode/fs_files.c b/fs/inode/fs_files.c
index 6d97b91d1e..a95f31847a 100644
--- a/fs/inode/fs_files.c
+++ b/fs/inode/fs_files.c
@@ -554,17 +554,6 @@ int file_allocate(FAR struct inode *inode, int oflags, off_t pos,
                                 pos, priv, minfd, addref);
 }
 
-FAR char *file_dump_backtrace(FAR struct file *filep, FAR char *buffer,
-                              size_t len)
-{
-#if CONFIG_FS_BACKTRACE > 0
-  backtrace_format(buffer, len, filep->f_backtrace, CONFIG_FS_BACKTRACE);
-#else
-  buffer[0] = '\0';
-#endif
-  return buffer;
-}
-
 /****************************************************************************
  * Name: files_duplist
  *
diff --git a/fs/procfs/fs_procfsproc.c b/fs/procfs/fs_procfsproc.c
index f8e570b8a1..1cf2a58f84 100644
--- a/fs/procfs/fs_procfsproc.c
+++ b/fs/procfs/fs_procfsproc.c
@@ -1246,7 +1246,6 @@ static ssize_t proc_groupfd(FAR struct proc_file_s *procfile,
 {
   FAR struct task_group_s *group = tcb->group;
   FAR struct file *filep;
-  char backtrace[BACKTRACE_BUFFER_SIZE(CONFIG_FS_BACKTRACE)];
   char path[PATH_MAX];
   size_t remaining;
   size_t linesize;
@@ -1306,22 +1305,23 @@ static ssize_t proc_groupfd(FAR struct proc_file_s *procfile,
         }
 
       linesize   = procfs_snprintf(procfile->line, STATUS_LINELEN,
-                                   "%-3d %-7d %-4x %-9ld %-14s %s\n",
+                                   "%-3d %-7d %-4x %-9ld %-14s ",
                                    i, filep->f_oflags,
                                    INODE_GET_TYPE(filep->f_inode),
-                                   (long)filep->f_pos, path,
-                                   file_dump_backtrace(filep,
-                                                       backtrace,
-                                                       sizeof(backtrace)
-                                                      )
-                                  );
+                                   (long)filep->f_pos, path);
+      if (linesize < STATUS_LINELEN)
+        {
+#if CONFIG_FS_BACKTRACE > 0
+          linesize += backtrace_format(procfile->line + linesize,
+                                       STATUS_LINELEN - linesize,
+                                       filep->f_backtrace,
+                                       CONFIG_FS_BACKTRACE);
+#endif
+          procfile->line[linesize - 2] = '\n';
+        }
+
       copysize   = procfs_memcpy(procfile->line, linesize,
                                  buffer, remaining, &offset);
-      if (linesize + 1 == STATUS_LINELEN)
-        {
-          procfile->line[STATUS_LINELEN - 2] = '\n';
-          linesize = STATUS_LINELEN;
-        }
 
       totalsize += copysize;
       buffer    += copysize;
diff --git a/include/nuttx/fs/fs.h b/include/nuttx/fs/fs.h
index 9a541c4d99..bca2f8dd19 100644
--- a/include/nuttx/fs/fs.h
+++ b/include/nuttx/fs/fs.h
@@ -164,9 +164,6 @@
 #define CH_STAT_ATIME      (1 << 3)
 #define CH_STAT_MTIME      (1 << 4)
 
-#define FS_BACKTRACE_WIDTH      (sizeof(uintptr_t) * 2 + 3) /* 3: ' 0x' prefix */
-#define FS_BACKTRACE_BUFFER_LEN (CONFIG_FS_BACKTRACE * FS_BACKTRACE_WIDTH + 1)
-
 /****************************************************************************
  * Public Type Definitions
  ****************************************************************************/
@@ -963,20 +960,6 @@ int file_allocate_from_tcb(FAR struct tcb_s *tcb, FAR struct inode *inode,
 int file_allocate(FAR struct inode *inode, int oflags, off_t pos,
                   FAR void *priv, int minfd, bool addref);
 
-/****************************************************************************
- * Name: file_dump_backtrace
- *
- * Description:
- *   Dump the backtrace of the file open to given buffer.
- *
- * Returned Value:
- *     Returns the backtrace string, it could be empty.
- *
- ****************************************************************************/
-
-FAR char *file_dump_backtrace(FAR struct file *filep, FAR char *buffer,
-                              size_t len);
-
 /****************************************************************************
  * Name: file_dup
  *