merge-upstream/v5.15.52 from branch/tag: upstream/v5.15.52 into branch: cos-5.15

Changelog:
-------------------------------------------------------------

Brian Foster (1):
      xfs: punch out data fork delalloc blocks on COW writeback failure

Christian Brauner (12):
      fs: add is_idmapped_mnt() helper
      fs: move mapping helpers
      fs: tweak fsuidgid_has_mapping()
      fs: account for filesystem mappings
      docs: update mapping documentation
      fs: use low-level mapping helpers
      fs: remove unused low-level mapping helpers
      fs: port higher-level mapping helpers
      fs: add i_user_ns() helper
      fs: support mapped mounts of mapped filesystems
      fs: fix acl translation
      fs: account for group membership

Coly Li (1):
      bcache: memset on stack variables in bch_btree_check() and bch_sectors_dirty_init()

Darrick J. Wong (3):
      xfs: remove all COW fork extents when remounting readonly
      xfs: prevent UAF in xfs_log_item_in_current_chkpt
      xfs: only bother with sync_filesystem during readonly remount

Dave Chinner (1):
      xfs: check sb_meta_uuid for dabuf buffer recovery

Greg Kroah-Hartman (2):
      x86, kvm: use proper ASM macros for kvm_vcpu_is_preempted
      Linux 5.15.52

Guo-Feng Fan (1):
      rtw88: 8821c: support RFE type4 wifi NIC

Masahiro Yamada (1):
      tick/nohz: unexport __init-annotated tick_nohz_full_setup()

Naveen N. Rao (1):
      powerpc/ftrace: Remove ftrace init tramp once kernel init is complete

Pavel Begunkov (1):
      io_uring: fix not locked access to fixed buf table

Ping-Ke Shih (1):
      rtw88: rtw8821c: enable rfe 6 devices

Rustam Kovhaev (1):
      xfs: use kmem_cache_free() for kmem_cache objects

Vladimir Oltean (1):
      net: mscc: ocelot: allow unregistered IP multicast flooding to CPU

Yang Xu (1):
      xfs: Fix the free logic of state in xfs_attr_node_hasname

BUG=b/237914490
TEST=tryjob, validation and K8s e2e
RELEASE_NOTE=Updated the Linux kernel to v5.15.52.

Signed-off-by: COS Kernel Merge Bot <cloud-image-merge-automation@prod.google.com>
Change-Id: Ife400754737d265c6498e9040fcb9981cef775df