[GIT PULL] Ceph updates for 5.15-rc1

[Ilya Dryomov]

Hi Linus,

The following changes since commit 7d2a07b769330c34b4deabeed939325c77a7ec2f:

  Linux 5.14 (2021-08-29 15:04:50 -0700)

are available in the Git repository at:

  https://github.com/ceph/ceph-client.git tags/ceph-for-5.15-rc1

for you to fetch changes up to 05a444d3f90a3c3e6362e88a1bf13e1a60f8cace:

  ceph: fix dereference of null pointer cf (2021-09-03 10:55:51 +0200)

----------------------------------------------------------------
We have:

- 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.

----------------------------------------------------------------
Colin Ian King (1):
      ceph: fix dereference of null pointer cf

Jeff Layton (11):
      ceph: fix memory leak on decode error in ceph_handle_caps
      ceph: fix comment about short copies in ceph_write_end
      ceph: remove some defunct forward declarations
      ceph: add a new vxattr to return auth mds for an inode
      ceph: cancel delayed work instead of flushing on mdsc teardown
      ceph: remove redundant initializations from mdsc and session
      ceph: add ceph_change_snap_realm() helper
      ceph: print more information when we can't find snaprealm
      ceph: request Fw caps before updating the mtime in ceph_write_iter
      ceph: lockdep annotations for try_nonblocking_invalidate
      ceph: drop the mdsc_get_session/put_session dout messages

Xiubo Li (8):
      ceph: make ceph_create_session_msg a global symbol
      ceph: make iterate_sessions a global symbol
      ceph: flush mdlog before umounting
      ceph: flush the mdlog before waiting on unsafe reqs
      ceph: reconnect to the export targets on new mdsmaps
      ceph: remove the capsnaps when removing caps
      ceph: don't WARN if we're force umounting
      ceph: don't WARN if we're forcibly removing the session caps

 fs/ceph/addr.c               |   2 +-
 fs/ceph/cache.h              |   6 -
 fs/ceph/caps.c               | 266 ++++++++++++++++++++++++++++---------------
 fs/ceph/file.c               |  32 +++---
 fs/ceph/inode.c              |  11 +-
 fs/ceph/mds_client.c         | 218 +++++++++++++++++++++++++----------
 fs/ceph/mds_client.h         |   5 +
 fs/ceph/mdsmap.c             |  12 +-
 fs/ceph/metric.c             |   4 +-
 fs/ceph/snap.c               |  59 ++++++----
 fs/ceph/strings.c            |   1 +
 fs/ceph/super.h              |   9 +-
 fs/ceph/xattr.c              |  19 ++++
 include/linux/ceph/ceph_fs.h |   1 +
 14 files changed, 438 insertions(+), 207 deletions(-)