[PATCH 3.18 29/33] xfs: prevent multi-fsb dir readahead from reading random blocks

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Brian Foster commit cb52ee334a45ae6c78a3999e4b473c43ddc528f4 upstream. Directory block readahead uses a complex iteration mechanism to map between high-level directory

[PATCH 3.18 29/33] xfs: prevent multi-fsb dir readahead from reading random blocks

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Brian Foster commit cb52ee334a45ae6c78a3999e4b473c43ddc528f4 upstream. Directory block readahead uses a complex iteration mechanism to map between high-level directory blocks and underlying