Re: [PATCH 0/5] fix validation races and cleanup locking

[Vlastimil Babka <vbabka@suse.cz>]

On 8/12/22 11:14, Vlastimil Babka wrote:
> This series builds on the validation races fix posted previously [1]
> that became patch 2 here and contains all the details in its
> description.
> 
> Thanks to Hyeonggon Yoo's observation, patch 3 removes more slab_lock()
> usage that became unnecessary after patch 2.
> 
> This made it possible to further simplify locking code in patches 4 and
> 5. Since those are related to PREEMPT_RT, I'm CCing relevant people on
> this series.

Forgot the link to the git version of this:
https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/linux.git/log/?h=slub-validate-fix-v2r1

> [1] https://lore.kernel.org/all/20220809140043.9903-1-vbabka@suse.cz/
> 
> Vlastimil Babka (5):
>   mm/slub: move free_debug_processing() further
>   mm/slub: restrict sysfs validation to debug caches and make it safe
>   mm/slub: remove slab_lock() usage for debug operations
>   mm/slub: convert object_map_lock to non-raw spinlock
>   mm/slub: simplify __cmpxchg_double_slab() and slab_[un]lock()
> 
>  mm/slub.c | 417 +++++++++++++++++++++++++++++++++---------------------
>  1 file changed, 252 insertions(+), 165 deletions(-)
>