From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752310AbbCZByP (ORCPT ); Wed, 25 Mar 2015 21:54:15 -0400 Received: from linuxhacker.ru ([217.76.32.60]:39213 "EHLO fiona.linuxhacker.ru" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752229AbbCZByM (ORCPT ); Wed, 25 Mar 2015 21:54:12 -0400 From: green@linuxhacker.ru To: Greg Kroah-Hartman , devel@driverdev.osuosl.org, Andreas Dilger Cc: Linux Kernel Mailing List , Li Dongyang , Bob Glossman , Oleg Drokin Subject: [PATCH 08/10] staging/lustre/llite: glimpse the inode before doing fiemap Date: Wed, 25 Mar 2015 21:53:24 -0400 Message-Id: <1427334806-31466-9-git-send-email-green@linuxhacker.ru> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1427334806-31466-1-git-send-email-green@linuxhacker.ru> References: <1427334806-31466-1-git-send-email-green@linuxhacker.ru> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Li Dongyang For a new inode, the i_size is 0 until a stat, which will yield an empty fiemap result. Fix the issue by glimpsing the size before doing fiemap. Signed-off-by: Li Dongyang Signed-off-by: Bob Glossman Reviewed-by: Andreas Dilger Reviewed-by: Jinshan Xiong Reviewed-on: http://review.whamcloud.com/13439 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6091 Signed-off-by: Oleg Drokin --- drivers/staging/lustre/lustre/llite/file.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c index 6dab3ba..85e74d1 100644 --- a/drivers/staging/lustre/lustre/llite/file.c +++ b/drivers/staging/lustre/lustre/llite/file.c @@ -1712,6 +1712,12 @@ static int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap, fm_key.oa.o_oi = lsm->lsm_oi; fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP; + if (i_size_read(inode) == 0) { + rc = ll_glimpse_size(inode); + if (rc) + goto out; + } + obdo_from_inode(&fm_key.oa, inode, OBD_MD_FLSIZE); obdo_set_parent_fid(&fm_key.oa, &ll_i2info(inode)->lli_fid); /* If filesize is 0, then there would be no objects for mapping */ -- 2.1.0