[3.16.y-ckt stable] Patch "ceph: fix request time stamp encoding" has been added to the 3.16.y-ckt tree

Luis Henriques luis.henriques at canonical.com
Mon Apr 11 17:20:54 UTC 2016


This is a note to let you know that I have just added a patch titled

    ceph: fix request time stamp encoding

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt27.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

---8<------------------------------------------------------------

>From 3ffac7f4aaf5d20791fd2d9b7a31f44dc97414dc Mon Sep 17 00:00:00 2001
From: "Yan, Zheng" <zyan at redhat.com>
Date: Fri, 1 Apr 2016 10:38:08 -0700
Subject: ceph: fix request time stamp encoding

commit 1f041a89b4f22cf2e701514f4b8f73a8b1e06a3e upstream.

struct timespec uses 'long' to present second and nanosecond. 'long'
is 64 bits on 64bits machine. ceph MDS expects time stamp to be
encoded as struct ceph_timespec, which uses 'u32' to present second
and nanosecond.

Signed-off-by: Yan, Zheng <zyan at redhat.com>
BugLink: http://tracker.ceph.com/issues/15302
BugLink: http://bugs.launchpad.net/bugs/1564950
[ kamal: backport to 3.16-stable: no time stamp in __prepare_send_request() ]
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 fs/ceph/mds_client.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 63f2bc82f4af..6b6f11b8f36a 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1841,7 +1841,11 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
 	head->num_releases = cpu_to_le16(releases);

 	/* time stamp */
-	ceph_encode_copy(&p, &req->r_stamp, sizeof(req->r_stamp));
+	{
+		struct ceph_timespec ts;
+		ceph_encode_timespec(&ts, &req->r_stamp);
+		ceph_encode_copy(&p, &ts, sizeof(ts));
+	}

 	BUG_ON(p > end);
 	msg->front.iov_len = p - msg->front.iov_base;




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