linux-kernel - [GIT PULL] slab updates for 6.15

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Message-ID: <2f7985a8-0460-42de-9af0-4f966b937695@suse.cz>
Date: Thu, 20 Mar 2025 14:06:42 +0100
From: Vlastimil Babka <vbabka@...e.cz>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: David Rientjes <rientjes@...gle.com>, Christoph Lameter <cl@...ux.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 "linux-mm@...ck.org" <linux-mm@...ck.org>,
 LKML <linux-kernel@...r.kernel.org>,
 Roman Gushchin <roman.gushchin@...ux.dev>,
 Hyeonggon Yoo <42.hyeyoo@...il.com>,
 "Uladzislau Rezki (Sony)" <urezki@...il.com>, RCU <rcu@...r.kernel.org>
Subject: [GIT PULL] slab updates for 6.15

Hi Linus,

please pull the latest slab updates from:

  git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git tags/slab-for-6.15

There's a small conflict with the rcu tree:
https://lore.kernel.org/all/20250212150941.5e4fa1c9@canb.auug.org.au/

Thanks,
Vlastimil

======================================

* Move the TINY_RCU kvfree_rcu() implementation from RCU to SLAB
  subsystem and cleanup its integration (Vlastimil Babka)

  Following the move of the TREE_RCU batching kvfree_rcu() implementation in
  6.14, move also the simpler TINY_RCU variant. Refactor the #ifdef guards
  so that the simple implementation is also used with SLUB_TINY. Remove the
  need for RCU to recognize fake callback function pointers
  (__is_kvfree_rcu_offset()) when handling call_rcu() by implementing a
  callback that calculates the object's address from the embedded rcu_head
  address without knowing its offset.

* Improve kmalloc cache randomization in kvmalloc (GONG Ruiqi)

  Due to an extra layer of function call, all kvmalloc() allocations used the
  same set of random caches. Thanks to moving the kvmalloc() implementation to
  slub.c, this is improved and randomization now works for kvmalloc.

* Various improvements to debugging, testing and other cleanups (Hyesoo Yu,
  Lilith Gkini, Uladzislau Rezki, Matthew Wilcox, Kevin Brodsky, Ye Bin)

----------------------------------------------------------------
GONG Ruiqi (2):
      slab: Adjust placement of __kvmalloc_node_noprof
      slab: Achieve better kmalloc caches randomization in kvmalloc

Hyesoo Yu (2):
      mm: slub: Print the broken data before restoring them
      mm: slub: call WARN() when detecting a slab corruption

Kevin Brodsky (1):
      mm/slab: simplify SLAB_* flag handling

Lilith Gkini (1):
      slub: Handle freelist cycle in on_freelist()

Matthew Wilcox (Oracle) (1):
      slab: Mark large folios for debugging purposes

Uladzislau Rezki (Sony) (1):
      kunit, slub: Add test_kfree_rcu_wq_destroy use case

Vlastimil Babka (6):
      slab, rcu: move TINY_RCU variant of kvfree_rcu() to SLAB
      rcu: remove trace_rcu_kvfree_callback
      rcu, slab: use a regular callback function for kvfree_rcu
      slab: don't batch kvfree_rcu() with SLUB_TINY
      mm, slab: cleanup slab_bug() parameters
      Merge branch 'slab/for-6.15/kfree_rcu_tiny' into slab/for-next

Ye Bin (1):
      mm/slab: call kmalloc_noprof() unconditionally in kmalloc_array_noprof()

 include/linux/page-flags.h |  18 +--
 include/linux/rcupdate.h   |  33 +++--
 include/linux/rcutiny.h    |  36 -----
 include/linux/rcutree.h    |   3 -
 include/linux/slab.h       |  16 ++-
 include/trace/events/rcu.h |  34 -----
 kernel/rcu/tiny.c          |  25 ----
 kernel/rcu/tree.c          |   9 +-
 lib/slub_kunit.c           |  59 ++++++++
 mm/Kconfig                 |   4 +
 mm/slab.h                  |  34 +----
 mm/slab_common.c           |  44 ++++--
 mm/slub.c                  | 336 ++++++++++++++++++++++++++++++++++++++-------
 mm/util.c                  | 162 ----------------------
 14 files changed, 430 insertions(+), 383 deletions(-)