From: Li Xi <lixi@ddn.com>
Date: Tue, 27 Nov 2018 07:20:31 +0000 (-0500)
Subject: LU-11697 osc: wrong page offset for T10PI checksum
X-Git-Tag: 2.12.0-RC1~4
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F27%2F33727%2F5;p=fs%2Flustre-release.git

LU-11697 osc: wrong page offset for T10PI checksum

The page offset might could be non-zero value. Thus, when
calculating T10PI checksum, the offset should be correct value.

Change-Id: Ib32584eb47ea55ec3804e531ac02ffd252411886
Signed-off-by: Li Xi <lixi@ddn.com>
Reviewed-on: https://review.whamcloud.com/33727
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Li Dongyang <dongyangli@ddn.com>
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lustre/osc/osc_request.c b/lustre/osc/osc_request.c
index 0b8e290..6b56631 100644
--- a/lustre/osc/osc_request.c
+++ b/lustre/osc/osc_request.c
@@ -1155,7 +1155,8 @@ static int osc_checksum_bulk_t10pi(const char *obd_name, int nob,
 		 * The left guard number should be able to hold checksums of a
 		 * whole page
 		 */
-		rc = obd_page_dif_generate_buffer(obd_name, pga[i]->pg, 0,
+		rc = obd_page_dif_generate_buffer(obd_name, pga[i]->pg,
+						  pga[i]->off & ~PAGE_MASK,
 						  count,
 						  guard_start + used_number,
 						  guard_number - used_number,