[PATCH 00/16] credentials guards: the easy cases

[Christian Brauner <brauner@kernel.org>]

This converts all users of override_creds() to rely on credentials
guards. Leave all those that do the prepare_creds() + modify creds +
override_creds() dance alone for now. Some of them qualify for their own
variant.

Signed-off-by: Christian Brauner <brauner@kernel.org>
---
Christian Brauner (16):
      cred: add {scoped_}with_creds() guards
      aio: use credential guards
      backing-file: use credential guards for reads
      backing-file: use credential guards for writes
      backing-file: use credential guards for splice read
      backing-file: use credential guards for splice write
      backing-file: use credential guards for mmap
      binfmt_misc: use credential guards
      erofs: use credential guards
      nfs: use credential guards in nfs_local_call_read()
      nfs: use credential guards in nfs_local_call_write()
      nfs: use credential guards in nfs_idmap_get_key()
      smb: use credential guards in cifs_get_spnego_key()
      act: use credential guards in acct_write_process()
      cgroup: use credential guards in cgroup_attach_permissions()
      net/dns_resolver: use credential guards in dns_query()

 fs/aio.c                     |   6 +-
 fs/backing-file.c            | 147 ++++++++++++++++++++++---------------------
 fs/binfmt_misc.c             |   7 +--
 fs/erofs/fileio.c            |   6 +-
 fs/nfs/localio.c             |  59 +++++++++--------
 fs/nfs/nfs4idmap.c           |   7 +--
 fs/smb/client/cifs_spnego.c  |   6 +-
 include/linux/cred.h         |  12 ++--
 kernel/acct.c                |   6 +-
 kernel/cgroup/cgroup.c       |  10 ++-
 net/dns_resolver/dns_query.c |   6 +-
 11 files changed, 133 insertions(+), 139 deletions(-)
---
base-commit: fea79c89ff947a69a55fed5ce86a70840e6d719c
change-id: 20251103-work-creds-guards-simple-619ef2200d22