Commit b687034b1a4d for kernel

commit b687034b1a4d85333ced0fe07f67b17276cccdc8
Merge: f96163865a13 a8ec08bf3259
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Wed Dec 3 11:53:47 2025 -0800

    Merge tag 'slab-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

    Pull slab updates from Vlastimil Babka:

     - mempool_alloc_bulk() support for upcoming users in the block layer
       that need to allocate multiple objects at once with the mempool's
       guaranteed progress semantics, which is not achievable with an
       allocation single objects in a loop. Along with refactoring and
       various improvements (Christoph Hellwig)

     - Preparations for the upcoming separation of struct slab from struct
       page, mostly by removing the struct folio layer, as the purpose of
       struct folio has shifted since it became used in slab code (Matthew
       Wilcox)

     - Modernisation of slab's boot param API usage, which removes some
       unexpected parsing corner cases (Petr Tesarik)

     - Refactoring of freelist_aba_t (now struct freelist_counters) and
       associated functions for double cmpxchg, enabled by -fms-extensions
       (Vlastimil Babka)

     - Cleanups and improvements related to sheaves caching layer, that were
       part of the full conversion to sheaves, which is planned for the next
       release (Vlastimil Babka)

    * tag 'slab-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: (42 commits)
      slab: Remove unnecessary call to compound_head() in alloc_from_pcs()
      mempool: clarify behavior of mempool_alloc_preallocated()
      mempool: drop the file name in the top of file comment
      mempool: de-typedef
      mempool: remove mempool_{init,create}_kvmalloc_pool
      mempool: legitimize the io_schedule_timeout in mempool_alloc_from_pool
      mempool: add mempool_{alloc,free}_bulk
      mempool: factor out a mempool_alloc_from_pool helper
      slab: Remove references to folios from virt_to_slab()
      kasan: Remove references to folio in __kasan_mempool_poison_object()
      memcg: Convert mem_cgroup_from_obj_folio() to mem_cgroup_from_obj_slab()
      mempool: factor out a mempool_adjust_gfp helper
      mempool: add error injection support
      mempool: improve kerneldoc comments
      mm: improve kerneldoc comments for __alloc_pages_bulk
      fault-inject: make enum fault_flags available unconditionally
      usercopy: Remove folio references from check_heap_object()
      slab: Remove folio references from kfree_nolock()
      slab: Remove folio references from kfree_rcu_sheaf()
      slab: Remove folio references from build_detached_freelist()
      ...