ceph: handle btime in cap messages

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 50409d9..623b826 100644 (file)
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1139,7 +1139,7 @@ struct cap_msg_args {
        u64                     flush_tid, oldest_flush_tid, size, max_size;
        u64                     xattr_version;
        struct ceph_buffer      *xattr_buf;
-       struct timespec64       atime, mtime, ctime;
+       struct timespec64       atime, mtime, ctime, btime;
        int                     op, caps, wanted, dirty;
        u32                     seq, issue_seq, mseq, time_warp_seq;
        u32                     flags;
@@ -1160,7 +1160,6 @@ static int send_cap_msg(struct cap_msg_args *arg)
        struct ceph_msg *msg;
        void *p;
        size_t extra_len;
-       struct timespec64 zerotime = {0};
        struct ceph_osd_client *osdc = &arg->session->s_mdsc->fsc->client->osdc;
 
        dout("send_cap_msg %s %llx %llx caps %s wanted %s dirty %s"
@@ -1251,7 +1250,7 @@ static int send_cap_msg(struct cap_msg_args *arg)
         * We just zero these out for now, as the MDS ignores them unless
         * the requisite feature flags are set (which we don't do yet).
         */
-       ceph_encode_timespec64(p, &zerotime);
+       ceph_encode_timespec64(p, &arg->btime);
        p += sizeof(struct ceph_timespec);
        ceph_encode_64(&p, 0);
 
@@ -1379,6 +1378,7 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
        arg.mtime = inode->i_mtime;
        arg.atime = inode->i_atime;
        arg.ctime = inode->i_ctime;
+       arg.btime = ci->i_btime;
 
        arg.op = op;
        arg.caps = cap->implemented;
@@ -1438,6 +1438,7 @@ static inline int __send_flush_snap(struct inode *inode,
        arg.atime = capsnap->atime;
        arg.mtime = capsnap->mtime;
        arg.ctime = capsnap->ctime;
+       arg.btime = capsnap->btime;
 
        arg.op = CEPH_CAP_OP_FLUSHSNAP;
        arg.caps = capsnap->issued;
@@ -3044,6 +3045,7 @@ struct cap_extra_info {
        u64 nsubdirs;
        /* currently issued */
        int issued;
+       struct timespec64 btime;
 };
 
 /*
@@ -3130,6 +3132,7 @@ static void handle_cap_grant(struct inode *inode,
                inode->i_mode = le32_to_cpu(grant->mode);
                inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(grant->uid));
                inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(grant->gid));
+               ci->i_btime = extra_info->btime;
                dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode,
                     from_kuid(&init_user_ns, inode->i_uid),
                     from_kgid(&init_user_ns, inode->i_gid));
@@ -3851,17 +3854,20 @@ void ceph_handle_caps(struct ceph_mds_session *session,
                }
        }
 
-       if (msg_version >= 11) {
+       if (msg_version >= 9) {
                struct ceph_timespec *btime;
                u64 change_attr;
-               u32 flags;
 
-               /* version >= 9 */
                if (p + sizeof(*btime) > end)
                        goto bad;
                btime = p;
+               ceph_decode_timespec64(&extra_info.btime, btime);
                p += sizeof(*btime);
                ceph_decode_64_safe(&p, end, change_attr, bad);
+       }
+
+       if (msg_version >= 11) {
+               u32 flags;
                /* version >= 10 */
                ceph_decode_32_safe(&p, end, flags, bad);
                /* version >= 11 */

diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index 72c6c02..854308e 100644 (file)
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -606,6 +606,7 @@ int __ceph_finish_cap_snap(struct ceph_inode_info *ci,
        capsnap->mtime = inode->i_mtime;
        capsnap->atime = inode->i_atime;
        capsnap->ctime = inode->i_ctime;
+       capsnap->btime = ci->i_btime;
        capsnap->time_warp_seq = ci->i_time_warp_seq;
        capsnap->truncate_size = ci->i_truncate_size;
        capsnap->truncate_seq = ci->i_truncate_seq;

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 859d1f3..2e20fc7 100644 (file)
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -197,7 +197,7 @@ struct ceph_cap_snap {
        u64 xattr_version;
 
        u64 size;
-       struct timespec64 mtime, atime, ctime;
+       struct timespec64 mtime, atime, ctime, btime;
        u64 time_warp_seq;
        u64 truncate_size;
        u32 truncate_seq;