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Subject[PATCH 3.2 117/199] ceph: fix bad endianness handling in parse_reply_info_extra
3.2.87-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Jeff Layton <jlayton@redhat.com>

commit 6df8c9d80a27cb587f61b4f06b57e248d8bc3f86 upstream.

sparse says:

fs/ceph/mds_client.c:291:23: warning: restricted __le32 degrades to integer
fs/ceph/mds_client.c:293:28: warning: restricted __le32 degrades to integer
fs/ceph/mds_client.c:294:28: warning: restricted __le32 degrades to integer
fs/ceph/mds_client.c:296:28: warning: restricted __le32 degrades to integer

The op value is __le32, so we need to convert it before comparing it.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
[bwh: Backported to 3.2: only filelock and directory replies are handled]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/ceph/mds_client.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -238,7 +238,9 @@ static int parse_reply_info_extra(void *
struct ceph_mds_reply_info_parsed *info,
int features)
{
- if (info->head->op == CEPH_MDS_OP_GETFILELOCK)
+ u32 op = le32_to_cpu(info->head->op);
+
+ if (op == CEPH_MDS_OP_GETFILELOCK)
return parse_reply_info_filelock(p, end, info, features);
else
return parse_reply_info_dir(p, end, info, features);
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