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authorDavid Disseldorp <ddiss@suse.de>2019-04-18 15:15:46 +0300
committerIlya Dryomov <idryomov@gmail.com>2019-07-08 15:01:40 +0300
commit193e7b37628e97c6e66ec26a2c062dace68b4acd (patch)
tree24bcc4b4dc2d768479ab76a1e7e1609c6319059b /fs/ceph/mds_client.c
parente1b814391440b65df0836cef8c7b641fb83f4bf6 (diff)
downloadlinux-193e7b37628e97c6e66ec26a2c062dace68b4acd.tar.xz
ceph: carry snapshot creation time with inodes
MDS InodeStat v3 wire structures include a trailing snapshot creation time member. Unmarshall this and retain it for a future vxattr. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/mds_client.c')
-rw-r--r--fs/ceph/mds_client.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index c8a9b89b922d..0b78507eccb0 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -166,6 +166,15 @@ static int parse_reply_info_in(void **p, void *end,
info->dir_pin = -ENODATA;
}
+ /* snapshot birth time, remains zero for v<=2 */
+ if (struct_v >= 3) {
+ ceph_decode_need(p, end, sizeof(info->snap_btime), bad);
+ ceph_decode_copy(p, &info->snap_btime,
+ sizeof(info->snap_btime));
+ } else {
+ memset(&info->snap_btime, 0, sizeof(info->snap_btime));
+ }
+
*p = end;
} else {
if (features & CEPH_FEATURE_MDS_INLINE_DATA) {
@@ -198,6 +207,7 @@ static int parse_reply_info_in(void **p, void *end,
}
info->dir_pin = -ENODATA;
+ /* info->snap_btime remains zero */
}
return 0;
bad: