Re: [PATCH 2/2] mm: slub: use DEFINE_RAW_SPINLOCK init object_map_lock

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On Tue, 25 May 2021 12:46:35 +0200 Vlastimil Babka <vbabka@xxxxxxx> wrote:

> On 5/25/21 12:23 PM, Yejune Deng wrote:
> > Use DEFINE_RAW_SPINLOCK instead of DEFINE_SPINLOCK object_map_lock
> > that won't be preempted on mainline and PREEMPT_RT kernels.
> > 
> > Signed-off-by: Yejune Deng <yejunedeng@xxxxxxxxx>
> 
> RT tree also has such patch, with IMHO more thorough description:

Yes please, a more thorough decription is needed.  The description
provided with this patch could be applied to every spinlock in the
kernel!





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