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Linus Torvalds 00b04f4495 vfs-7.4-rc1.idmap 
Please consider pulling these changes from the signed vfs-7.4-rc1.idmap tag.
 
 Thanks!
 Christian
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Merge tag 'vfs-7.4-rc1.idmap' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs idmap constification from Christian Brauner:
 "This makes struct mnt_idmap const throughout the tree.

  A mount's idmapping is immutable. The only thing modified after
  alloc_mnt_idmap() is the reference count and that is hidden behind
  mnt_idmap_get() and mnt_idmap_put(). Everything else only reads from
  it. That is the same model struct cred uses and the idmapping is
  sensitive enough to deserve it.

  The conversion goes bottom up through the vfs{g,u}id and fs{g,u}id
  helpers, the privilege checks, acl, xattr and quota and then every
  inode operation that takes an idmap, so ->permission(), ->getattr(),
  ->setattr(), ->create(), ->mkdir(), ->mknod(), ->symlink(),
  ->rename(), ->tmpfile(), ->get_acl(), ->set_acl() and ->fileattr_set()
  with their implementations in every filesystem, plus the LSM hooks.

  struct vfsmount, struct mount_kattr and struct kstatmount store a
  const pointer and nop_mnt_idmap and invalid_mnt_idmap live in rodata,
  so anything that tries to modify them faults instead of silently
  corrupting the initial idmapping"

* tag 'vfs-7.4-rc1.idmap' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (27 commits)
  fs: make nop_mnt_idmap and invalid_mnt_idmap const
  fs: port mnt_idmap() and file_mnt_idmap() to const mnt_idmap
  fs: port vfs_*() helpers to const mnt_idmap
  fs: port ->setattr() to pass const mnt_idmap
  fs: port ->getattr() to pass const mnt_idmap
  fs: port ->create() to pass const mnt_idmap
  fs: port ->symlink() to pass const mnt_idmap
  fs: port ->mkdir() to pass const mnt_idmap
  fs: port ->rename() to pass const mnt_idmap
  fs: port ->mknod() to pass const mnt_idmap
  fs: port ->tmpfile() to pass const mnt_idmap
  fs: port ->get_acl() to pass const mnt_idmap
  fs: port ->set_acl() to pass const mnt_idmap
  fs: port ->fileattr_set() to pass const mnt_idmap
  fs: port xattr to const mnt_idmap
  fs: port ->permission() to pass const mnt_idmap
  fs: port acl to const mnt_idmap
  fs: port inode_init_owner() to const mnt_idmap
  fs: port inode_owner_or_capable() to const mnt_idmap
  fs: port privilege checking helpers to const mnt_idmap
  ...
2026-10-19 17:57:49 -10:00
..
damon mm/damon/core: don't skip damos_adjust_quota() while esz is not zero 2026-09-26 13:55:10 -07:00
kasan kasan: unpoison task stack below watermark only in generic mode 2026-09-26 13:55:10 -07:00
kfence mm/slab, kfence, memcg: completely remove obj_ext for kfence objects 2026-08-04 12:30:45 +02:00
kmsan mm: split out vmalloc declarations from internal.h 2026-08-04 19:18:46 -07:00
tests
alloc_tag.c alloc_tag: add accuracy based filtering to ioctl 2026-08-24 18:43:13 -07:00
arch_numa.c mm.git review status for linus..mm-stable 2026-08-27 09:17:06 -07:00
backing-dev.c writeback: report a Tasks-RCU quiescent state per cgwb drain pass 2026-09-18 08:20:15 -07:00
balloon.c
bpf_memcontrol.c
cma_debug.c mm/cma_debug: fix invalid accesses for inactive CMA areas 2026-05-28 20:50:33 -07:00
cma_sysfs.c mm/cma_sysfs: skip inactive CMA areas in sysfs 2026-06-03 16:25:49 -07:00
cma.c mm/cma: remove stray newline from auto-generated CMA area name 2026-08-24 18:43:16 -07:00
cma.h mm: add some missing includes to mm-local headers 2026-08-24 18:43:03 -07:00
compaction.c mm: page_alloc: fix non-movable reclaim storm in defrag_mode 2026-08-06 18:57:24 -07:00
debug_page_alloc.c mm: debug_page_alloc: fix NULL buf in debug_guardpage_minorder_setup 2026-08-24 18:43:08 -07:00
debug_page_ref.c
debug_vm_pgtable.c mm: decouple protnone helpers from CONFIG_NUMA_BALANCING 2026-08-04 19:18:36 -07:00
debug.c mm: prefer mm->def_vma_flags in mm logic 2026-08-06 18:57:02 -07:00
dmapool_test.c
dmapool.c
early_ioremap.c mm/early_ioremap: clarify early_ioremap_reset() semantics 2026-08-06 18:57:21 -07:00
execmem.c mm: split out vmalloc declarations from internal.h 2026-08-04 19:18:46 -07:00
fadvise.c
fail_page_alloc.c
failslab.c
filemap.c mm: filemap: retain mapped dropbehind folios 2026-09-05 11:47:48 -07:00
folio-compat.c mm/page-writeback: document folio_mark_dirty() locking more explicitly 2026-08-24 18:43:19 -07:00
folio.c mm/folio: EXPORT_SYMBOL_FOR_KVM(lru_cache_drain_for_folio) 2026-09-08 23:28:06 -07:00
gup_test.c mm/gup_test: keep longterm pin state per file 2026-08-24 18:43:17 -07:00
gup_test.h
gup.c mm/gup: factor out LRU cache draining for folio into lru_cache_drain_for_folio() 2026-08-24 18:43:00 -07:00
highmem.c
hmm.c mm/hmm.c:hmm_do_fault(): suppress sparse warning 2026-08-24 18:43:24 -07:00
huge_memory.c mm/huge_memory: bypass THP tuneables for huge pfnmap mappings 2026-09-05 11:47:47 -07:00
hugetlb_cgroup.c mm/hugetlb_cgroup: call page_counter_set_max() outside VM_BUG_ON() 2026-09-01 20:26:20 -07:00
hugetlb_cma.c mm/hugetlb_cma: fix null nodemask dereference in hugetlb_cma_alloc_frozen_folio 2026-09-01 20:26:19 -07:00
hugetlb_cma.h mm: add some missing includes to mm-local headers 2026-08-24 18:43:03 -07:00
hugetlb_internal.h
hugetlb_sysctl.c
hugetlb_sysfs.c
hugetlb_vmemmap.c mm/hugetlb_vmemmap: remove bootmem_info leftovers 2026-08-04 19:18:42 -07:00
hugetlb_vmemmap.h mm/sparse-vmemmap: remove sparse_vmemmap_init_nid_late() 2026-07-28 21:12:00 -07:00
hugetlb.c mm/hugetlb: preserve mremap address delta when skipping page tables 2026-09-18 08:20:14 -07:00
hwpoison-inject.c
init-mm.c exec_state: relocate dumpable information 2026-05-26 11:02:01 +02:00
internal.h mm/gup: factor out LRU cache draining for folio into lru_cache_drain_for_folio() 2026-08-24 18:43:00 -07:00
interval_tree.c mm/rmap: use anon pgoff to track MAP_PRIVATE file-backed anon folios 2026-08-24 18:42:53 -07:00
ioremap.c
Kconfig mm/Kconfig: make MEMORY_FAILURE select MIGRATION 2026-08-24 18:43:24 -07:00
Kconfig.debug percpu: drop CONFIG_DEBUG_FORCE_WEAK_PER_CPU 2026-08-24 18:43:24 -07:00
khugepaged.c mm: fix incorrect vm_flags usage when checking allowable orders for tmpfs 2026-09-01 20:26:21 -07:00
kmemleak.c mm: kmemleak: default min_unref_scans to 2 for verbose auto-scan 2026-08-24 18:43:18 -07:00
ksm.c ksm: update comments and docs to reference folio->mapping 2026-08-24 18:43:02 -07:00
list_lru.c mm.git review status for mm-hotfixes-stable..mm-stable 2026-06-19 10:14:34 -07:00
maccess.c
madvise.c mm: fix incorrect vm_flags usage when checking allowable orders for tmpfs 2026-09-01 20:26:21 -07:00
Makefile drivers/base, mm: move arch_numa.c to mm/ 2026-08-24 18:43:10 -07:00
mapping_dirty_helpers.c mm/vma: use vma_start_pgoff(), linear_page_index() in mm code 2026-08-04 19:19:00 -07:00
memblock.c mm: memblock: add missing HugeTLB flag name 2026-09-15 15:54:35 +03:00
memcontrol-v1.c memcg: make the v1 soft limit knob inert 2026-09-01 20:26:20 -07:00
memcontrol-v1.h mm: add some missing includes to mm-local headers 2026-08-24 18:43:03 -07:00
memcontrol.c memcg: avoid charging the root memcg from obj_cgroup_charge_pages() 2026-09-05 11:47:48 -07:00
memfd_luo.c mm/memfd_luo: document preservation of file seals 2026-05-04 14:03:16 +00:00
memfd.c mm/vma: update do_mmap() to use vma_flags_t 2026-08-06 18:57:01 -07:00
memory_hotplug.c mm/memory_hotplug: add offline_and_remove_memory_ranges() 2026-08-06 18:56:59 -07:00
memory-failure.c mm: introduce and use vma_filebacked_address() 2026-08-24 18:42:51 -07:00
memory-tiers.c mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION 2026-04-05 13:53:33 -07:00
memory.c mm.git review status for linus..mm-stable 2026-08-27 09:17:06 -07:00
mempolicy.c mm/mempolicy: fix sleeping allocation in alloc_pages_bulk_weighted_interleave() 2026-09-01 20:26:22 -07:00
mempool.c mm/mempool: Untangle CONFIG_SLUB_DEBUG_ON abuse and switch to static key 2026-07-08 18:31:27 +02:00
memremap.c mm: decrement MTHP_STAT_NR_ANON in free_zone_device_folio() 2026-07-28 17:37:31 -07:00
memtest.c
migrate_device.c mm/migrate_device: avoid out-of-bounds writes for compound folios 2026-09-01 20:26:20 -07:00
migrate.c mm/migrate: calculate large folio page index using PFN 2026-08-24 18:42:53 -07:00
mincore.c mm: mincore: refactor mincore_page() 2026-08-06 18:57:15 -07:00
mlock.c mm/mlock: use the IRQ-safe accessor for NR_MLOCK in __munlock_folio() 2026-09-05 11:47:49 -07:00
mm_init.c mm.git review status for linus..mm-stable 2026-08-27 09:17:06 -07:00
mm_init.h mm: split out mm_init and memblock declarations from internal.h 2026-08-04 19:18:45 -07:00
mm_slot.h mm/mm_slot.h: add comments for mm_slot_lookup/insert 2026-08-06 18:57:04 -07:00
mmap_lock.c
mmap.c mm/vma: convert miscellaneous uses of VMA flags in core mm 2026-08-06 18:57:03 -07:00
mmu_gather.c
mmu_notifier.c mm/vma: correct incorrect vma.h inclusion 2026-08-04 19:19:04 -07:00
mmzone.c mm/vmscan: reduce lru_lock contention via vmstat-derived scan-balance cost 2026-08-24 18:42:56 -07:00
mprotect.c mm/mprotect: convert mprotect code to use vma_flags_t 2026-08-06 18:57:04 -07:00
mremap.c mm/mremap: fix locked_vm leak by splitting VMA for MREMAP_DONTUNMAP 2026-10-06 16:44:17 -07:00
mseal.c mm/mseal: remove further superfluous comments, do_mseal() 2026-08-06 18:57:12 -07:00
msync.c mm/vma: use vma_start_pgoff(), linear_page_index() in mm code 2026-08-04 19:19:00 -07:00
nommu.c mm: nommu: point to the write iterator upon split_vma 2026-08-24 18:42:48 -07:00
numa_emulation.c mm/fake-numa: fix under-allocation detection in uniform split 2026-06-02 08:34:03 +03:00
numa_memblks.c mm: numa_memblks: use numa_add_reserved_memblk() in numa_cleanup_meminfo() 2026-07-03 11:16:27 +03:00
numa.c
oom_kill.c
page_alloc.c mm/page_alloc: only update lowmem_reserve_ratio on sysctl write 2026-08-24 18:43:01 -07:00
page_alloc.h mm: replace __GFP_NO_CODETAG with ALLOC_NO_CODETAG 2026-07-30 19:40:44 -07:00
page_counter.c
page_ext.c mm/page_ext: remove pgdat_page_ext_init() 2026-08-24 18:43:03 -07:00
page_frag_cache.c mm: replace __GFP_NO_CODETAG with ALLOC_NO_CODETAG 2026-07-30 19:40:44 -07:00
page_idle.c
page_io.c mm/swap: move swap_ops into file systems for file system-based swap 2026-08-24 18:43:20 -07:00
page_isolation.c mm: split out internal page_alloc.h 2026-07-30 19:40:41 -07:00
page_owner.c mm: split out internal page_alloc.h 2026-07-30 19:40:41 -07:00
page_poison.c
page_reporting.c mm/page_reporting: add page_reporting_delay_ms module parameter 2026-08-24 18:42:58 -07:00
page_reporting.h
page_table_check.c Merge branch 'mm-hotfixes-stable' into mm-stable to pick up 2026-08-24 18:40:27 -07:00
page_vma_mapped.c mm/rmap: use anon pgoff to track MAP_PRIVATE file-backed anon folios 2026-08-24 18:42:53 -07:00
page-writeback.c mm.git review status for linus..mm-stable 2026-08-27 09:17:06 -07:00
pagewalk.c Merge branch 'mm-hotfixes-stable' into mm-stable to pick up 2026-08-24 18:40:27 -07:00
percpu-internal.h mm/percpu-internal.h: optimise pcpu_chunk struct to save memory 2026-06-02 15:22:13 -07:00
percpu-km.c mm/percpu-km: clear page->private before free them 2026-08-04 19:18:32 -07:00
percpu-stats.c
percpu-vm.c mm: split out vmalloc declarations from internal.h 2026-08-04 19:18:46 -07:00
percpu.c mm/percpu: avoid IO/FS reclaim in backing allocations 2026-07-28 21:11:47 -07:00
pgalloc-track.h mm: add some missing includes to mm-local headers 2026-08-24 18:43:03 -07:00
pgtable-generic.c mm: don't schedule deferred kernel page table freeing while booting 2026-10-06 16:44:18 -07:00
process_vm_access.c
ptdump.c mm/ptdump: always stabilise against page table freeing using init_mm 2026-08-04 20:02:00 -07:00
readahead.c block: split out a new blk_plug.h header 2026-08-04 06:57:05 -06:00
rmap.c mm/rmap: fix missing barrier between anon_vma init and vma->anon_vma publish 2026-09-18 08:20:14 -07:00
rodata_test.c
secretmem.c vfs-7.4-rc1.idmap 2026-10-19 17:57:49 -10:00
shmem_quota.c
shmem.c vfs-7.4-rc1.idmap 2026-10-19 17:57:49 -10:00
show_mem.c mm/show_mem: fix format string inconsistencies and type mismatches 2026-08-24 18:43:06 -07:00
shrinker_debug.c mm: shrinker: fix NULL pointer dereference in debugfs 2026-07-01 19:02:52 -07:00
shrinker.c mm/shrinker: fix bogus set_shrinker_bit() with cgroup.memory=nokmem 2026-09-08 23:28:06 -07:00
shuffle.c mm: split out internal page_alloc.h 2026-07-30 19:40:41 -07:00
shuffle.h mm: add some missing includes to mm-local headers 2026-08-24 18:43:03 -07:00
slab_common.c mm/slab: disallow kfree_rcu_sheaf() on PREEMPT_RT again 2026-09-04 12:15:41 +02:00
slab.h slab changes for 7.3 2026-08-24 10:58:57 -07:00
slub.c mm/slab: do not wake up kswapd in __kfree_rcu_sheaf() 2026-09-24 10:14:02 +02:00
sparse-vmemmap.c mm: split out sparse declarations from internal.h 2026-08-04 19:18:46 -07:00
sparse.c mm/sparse: keep mem_section_usage_size() internal 2026-08-24 18:43:06 -07:00
sparse.h mm/sparse: keep mem_section_usage_size() internal 2026-08-24 18:43:06 -07:00
swap_state.c mm.git review status for linus..mm-stable 2026-08-27 09:17:06 -07:00
swap_table.h mm, swap: merge zeromap into swap table 2026-06-02 15:22:23 -07:00
swap.h mm/swap: add a new swap_ops.h header to allow for pluggable swap ops 2026-08-24 18:43:20 -07:00
swapfile.c mm, swap: fix SWAP_USAGE_OFFLIST_BIT collision with real usage count 2026-09-05 11:47:48 -07:00
truncate.c mm/truncate: use folio_split() in truncate_inode_partial_folio() 2026-06-21 11:37:16 -07:00
usercopy.c
userfaultfd.c vfs-7.4-rc1.file 2026-10-19 17:35:50 -10:00
util.c mm/vma: update do_mmap() to use vma_flags_t 2026-08-06 18:57:01 -07:00
vma_exec.c mm: propagate VMA anonymous page offset on map, remap, split + merge 2026-08-24 18:42:52 -07:00
vma_init.c mm/vma: introduce VMA anon page offset field and add helpers 2026-08-24 18:42:49 -07:00
vma_internal.h mm/vma: correct incorrect vma.h inclusion 2026-08-04 19:19:04 -07:00
vma.c mm/mremap: fix locked_vm leak by splitting VMA for MREMAP_DONTUNMAP 2026-10-06 16:44:17 -07:00
vma.h mm/mremap: fix locked_vm leak by splitting VMA for MREMAP_DONTUNMAP 2026-10-06 16:44:17 -07:00
vmalloc.c mm/vmalloc: do not warn on -ENOMEM from va_alloc() 2026-08-24 18:43:02 -07:00
vmalloc.h mm: add some missing includes to mm-local headers 2026-08-24 18:43:03 -07:00
vmpressure.c mm/vmpressure: move v1 userspace eventfd code into memcontrol-v1.c 2026-07-30 19:40:28 -07:00
vmscan.c mm.git review status for linus..mm-stable 2026-08-27 09:17:06 -07:00
vmstat.c mm/vmstat: add NRSWP{IN,OUT} counters 2026-08-24 18:43:15 -07:00
workingset.c mm/vmscan: reduce lru_lock contention via vmstat-derived scan-balance cost 2026-08-24 18:42:56 -07:00
zpdesc.h
zsmalloc.c zsmalloc: account for handle size in class lookup 2026-08-24 18:43:19 -07:00
zswap.c mm/swap: add a new swap_ops.h header to allow for pluggable swap ops 2026-08-24 18:43:20 -07:00