On Mon, May 23, 2011 at 03:02:58PM +0800, Yongqiang Yang wrote: > To get delayed-extent information, ext4_ext_fiemap_cb() looks up > pagecache, it thus collects information starting from a page's > head block. > > If blocksize < pagesize, the beginning blocks of a page may lies > before the request range. So ext4_ext_fiemap_cb() should proceed > ignoring them, because they has been handled before. If no mapped > buffer in the range is found in the 1st page, we need to look up > the 2nd page, otherwise delayed-extents after a hole will be ignored. > > Without this patch, xfstests 225 will hung on ext4 with 1K block. > > Reported-by: Amir Goldstein <amir73il@xxxxxxxxxxxxxxxxxxxxx> > Signed-off-by: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx> Thanks, added to the ext4 tree. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
