Re: [PATCH v5 0/8] mm/slab: introduce kfree_rcu_nolock() and improve slub_kunit coverage

[Vlastimil Babka (SUSE)]

On 7/29/26 10:20, Harry Yoo (Oracle) wrote:

...

> 8:  8e69c83a1e52 ! 8:  aeaf2ab60046 slub_kunit: extend the test for kfree_rcu_nolock()
>     @@ lib/tests/slub_kunit.c: struct test_nolock_context {
>      -			gfp_t gfp = (i % 2) ? GFP_KERNEL : GFP_KERNEL_ACCOUNT;
>      +			gfp_t gfp = (i & 1) ? GFP_KERNEL : GFP_KERNEL_ACCOUNT;
>       
>     - 			objects[j] = kmalloc_obj(*objects[j], gfp);
>     +-			objects[j] = kmalloc(64, gfp);
>     ++			objects[j] = kmalloc_obj(*objects[j], gfp);
>       			if (!objects[j]) {
>     + 				j--;
>     + 				while (j >= 0)
>      @@ lib/tests/slub_kunit.c: static void test_kmalloc_kfree(void)
>       			}
>       		}
> 
> Link: https://lore.kernel.org/linux-mm/20260427-nolock-api-fix-v2-0-a6b83a92d9a4@xxxxxxxxxx [1]
> Link: https://lore.kernel.org/linux-mm/6edebc2b-5f5a-4b9c-9a4c-564310acee1b@xxxxxxxxxx  [2]
> Acked-by: Vlastimil Babka (SUSE) <vbabka@xxxxxxxxxx>
> Signed-off-by: Harry Yoo (Oracle) <harry@xxxxxxxxxx>
> Link: https://lore.kernel.org/linux-mm/872bd673-3d45-4111-8a41-31185db3ece5@xxxxxxxxxx
> Signed-off-by: Harry Yoo (Oracle) <harry@xxxxxxxxxx>
> Link: https://lore.kernel.org/linux-mm/6811cc17-8ee4-48c8-8cbf-6bf4d9f98162@xxxxxxxxxx [1]
> Link: https://lore.kernel.org/linux-mm/40591888-3a87-433e-b3d2-cda1cab543be@xxxxxxxxxx [2]
> Suggested-by: Vlastimil Babka (SUSE) <vbabka@xxxxxxxxxx>
> Signed-off-by: Harry Yoo (Oracle) <harry@xxxxxxxxxx>
> Signed-off-by: Harry Yoo (Oracle) <harry@xxxxxxxxxx>
> Signed-off-by: Harry Yoo (Oracle) <harry@xxxxxxxxxx>

Wonder what produced this weird block of assorted trailers? "b4 prep
--compare-to vX" never did that for me?

> ---
> Harry Yoo (Oracle) (8):
>       mm/slab, slub_kunit: register kprobe to trigger _nolock APIs
>       mm/slab: handle the !allow_spin case in kfree_rcu_sheaf()
>       mm/slab: use call_rcu() in unknown context if irqs are enabled
>       mm/slab: extend deferred free mechanism to handle rcu sheaves
>       mm/slab: allow kfree_rcu_sheaf() on PREEMPT_RT
>       mm/slab: introduce struct kvfree_rcu_head for kvfree_rcu batching
>       mm/slab: introduce kfree_rcu_nolock()
>       slub_kunit: extend the test for kfree_rcu_nolock()
> 
>  include/linux/rcupdate.h   |  32 ++++++-
>  include/linux/slab.h       |  16 +---
>  include/linux/types.h      |   8 ++
>  include/trace/events/rcu.h |   2 +-
>  lib/tests/slub_kunit.c     | 190 ++++++++++++++++++++++++++++-----------
>  mm/slab.h                  |  52 ++++++++++-
>  mm/slab_common.c           |  81 +++++++++++++----
>  mm/slub.c                  | 220 ++++++++++++++++++++++++++++-----------------
>  8 files changed, 433 insertions(+), 168 deletions(-)

Applied to slab/for-7.3/kfree_rcu_nolock and merged go slab/for-next, thanks!
Used slab/for-next-fixes as a base for a better topic branch indepdencence.

> ---
> base-commit: ffc64805cebac330b2a60b2f1f144fcc35b8ab46
> change-id: 20260615-kfree_rcu_nolock-e5502555992f
> 
> Best regards,