Pull ceph updates from Ilya Dryomov:
- a set of patches to address fsync stalls caused by depending on
periodic rather than triggered MDS journal flushes in some cases
(Xiubo Li)
- a fix for mtime effectively not getting updated in case of competing
writers (Jeff Layton)
- a couple of fixes for inode reference leaks and various WARNs after
"umount -f" (Xiubo Li)
- a new ceph.auth_mds extended attribute (Jeff Layton)
- a smattering of fixups and cleanups from Jeff, Xiubo and Colin.
* tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-client:
ceph: fix dereference of null pointer cf
ceph: drop the mdsc_get_session/put_session dout messages
ceph: lockdep annotations for try_nonblocking_invalidate
ceph: don't WARN if we're forcibly removing the session caps
ceph: don't WARN if we're force umounting
ceph: remove the capsnaps when removing caps
ceph: request Fw caps before updating the mtime in ceph_write_iter
ceph: reconnect to the export targets on new mdsmaps
ceph: print more information when we can't find snaprealm
ceph: add ceph_change_snap_realm() helper
ceph: remove redundant initializations from mdsc and session
ceph: cancel delayed work instead of flushing on mdsc teardown
ceph: add a new vxattr to return auth mds for an inode
ceph: remove some defunct forward declarations
ceph: flush the mdlog before waiting on unsafe reqs
ceph: flush mdlog before umounting
ceph: make iterate_sessions a global symbol
ceph: make ceph_create_session_msg a global symbol
ceph: fix comment about short copies in ceph_write_end
ceph: fix memory leak on decode error in ceph_handle_caps