[GIT PULL] cred

[Christian Brauner]

Hey Linus,

/* Summary */

For the v6.13 cycle we switched overlayfs to a variant of
override_creds() that doesn't take an extra reference. To this end the
{override,revert}_creds_light() helpers were introduced.

This series generalizes the idea behind {override,revert}_creds_light()
to the {override,revert}_creds() helpers. Afterwards overriding and
reverting credentials is reference count free unless the caller
explicitly takes a reference. All caller's have been appropriately ported.

/* Testing */

gcc version 14.2.0 (Debian 14.2.0-6)
Debian clang version 16.0.6 (27+b1)

No build failures or warnings were observed.

/* Conflicts */

Merge conflicts with mainline
=============================

No known conflicts.

Merge conflicts with other trees
================================

[1] linux-next: manual merge of the vfs-brauner tree with the nfs-anna tree
    https://lore.kernel.org/linux-next/20250109084503.1e046ef7@xxxxxxxxxxxxxxxx

The following changes since commit 40384c840ea1944d7c5a392e8975ed088ecf0b37:

  Linux 6.13-rc1 (2024-12-01 14:28:56 -0800)

are available in the Git repository at:

  git@xxxxxxxxxxxxxxxxxxx:pub/scm/linux/kernel/git/vfs/vfs tags/kernel-6.14-rc1.cred

for you to fetch changes up to a6babf4cbeaaa1c97a205382cdc958571f668ea8:

  cred: fold get_new_cred_many() into get_cred_many() (2024-12-02 11:25:15 +0100)

Please consider pulling these changes from the signed kernel-6.14-rc1.cred tag.

Thanks!
Christian

----------------------------------------------------------------
kernel-6.14-rc1.cred

----------------------------------------------------------------
Christian Brauner (31):
      tree-wide: s/override_creds()/override_creds_light(get_new_cred())/g
      cred: return old creds from revert_creds_light()
      tree-wide: s/revert_creds()/put_cred(revert_creds_light())/g
      cred: remove old {override,revert}_creds() helpers
      tree-wide: s/override_creds_light()/override_creds()/g
      tree-wide: s/revert_creds_light()/revert_creds()/g
      firmware: avoid pointless reference count bump
      sev-dev: avoid pointless cred reference count bump
      target_core_configfs: avoid pointless cred reference count bump
      aio: avoid pointless cred reference count bump
      binfmt_misc: avoid pointless cred reference count bump
      coredump: avoid pointless cred reference count bump
      nfs/localio: avoid pointless cred reference count bumps
      nfs/nfs4idmap: avoid pointless reference count bump
      nfs/nfs4recover: avoid pointless cred reference count bump
      nfsfh: avoid pointless cred reference count bump
      open: avoid pointless cred reference count bump
      ovl: avoid pointless cred reference count bump
      cifs: avoid pointless cred reference count bump
      cifs: avoid pointless cred reference count bump
      smb: avoid pointless cred reference count bump
      io_uring: avoid pointless cred reference count bump
      acct: avoid pointless reference count bump
      cgroup: avoid pointless cred reference count bump
      trace: avoid pointless cred reference count bump
      dns_resolver: avoid pointless cred reference count bump
      cachefiles: avoid pointless cred reference count bump
      nfsd: avoid pointless cred reference count bump
      cred: remove unused get_new_cred()
      Merge patch series "cred: rework {override,revert}_creds()"
      cred: fold get_new_cred_many() into get_cred_many()

 Documentation/security/credentials.rst |  5 ----
 drivers/crypto/ccp/sev-dev.c           |  2 +-
 fs/backing-file.c                      | 20 +++++++-------
 fs/nfsd/auth.c                         |  3 +-
 fs/nfsd/filecache.c                    |  2 +-
 fs/nfsd/nfs4recover.c                  |  3 +-
 fs/nfsd/nfsfh.c                        |  1 -
 fs/open.c                              | 11 ++------
 fs/overlayfs/dir.c                     |  4 +--
 fs/overlayfs/util.c                    |  4 +--
 fs/smb/server/smb_common.c             | 10 ++-----
 include/linux/cred.h                   | 43 +++++------------------------
 kernel/cred.c                          | 50 ----------------------------------
 13 files changed, 29 insertions(+), 129 deletions(-)