On Wed, 2021-08-18 at 16:06 +0800, xiubli@xxxxxxxxxx wrote: > From: Xiubo Li <xiubli@xxxxxxxxxx> > > Force umount will try to close the sessions by setting the session > state to _CLOSING, so in ceph_kill_sb after that it will warn on it. > > URL: https://tracker.ceph.com/issues/52295 > Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx> > --- > fs/ceph/mds_client.c | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c > index a632e1c7cef2..0302af53e079 100644 > --- a/fs/ceph/mds_client.c > +++ b/fs/ceph/mds_client.c > @@ -4558,6 +4558,8 @@ static void maybe_recover_session(struct ceph_mds_client *mdsc) > > bool check_session_state(struct ceph_mds_session *s) > { > + struct ceph_fs_client *fsc = s->s_mdsc->fsc; > + > switch (s->s_state) { > case CEPH_MDS_SESSION_OPEN: > if (s->s_ttl && time_after(jiffies, s->s_ttl)) { > @@ -4566,8 +4568,11 @@ bool check_session_state(struct ceph_mds_session *s) > } > break; > case CEPH_MDS_SESSION_CLOSING: > - /* Should never reach this when we're unmounting */ > - WARN_ON_ONCE(s->s_ttl); > + /* > + * Should never reach this when none force unmounting > + */ > + if (READ_ONCE(fsc->mount_state) != CEPH_MOUNT_SHUTDOWN) > + WARN_ON_ONCE(s->s_ttl); How about something like this instead? WARN_ON_ONCE(s->s_ttl && READ_ONCE(fsc->mount_state) != CEPH_MOUNT_SHUTDOWN); > fallthrough; > case CEPH_MDS_SESSION_NEW: > case CEPH_MDS_SESSION_RESTARTING: -- Jeff Layton <jlayton@xxxxxxxxxx>
