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From: Wonhyuk Yang <vvghjk1234@gmail.com>
To: Christoph Lameter <cl@gentwo.org>
Cc: linux-mm@kvack.org, Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [Question] The necessity of transaction ID in SLUB.
Date: Wed, 24 Nov 2021 08:59:20 +0900	[thread overview]
Message-ID: <CAEcHRTo8wKgLLzjxgH+-fva87k7mhQFpzVQae9z5n+9orok38w@mail.gmail.com> (raw)
In-Reply-To: <CAEcHRTrTc-DzeyU4fetfyU3pQCS6A0pPexGe5c5yB94Z88ueHg@mail.gmail.com>

Now I know what I missed!

I missed that the freepointer may no more be valid because any other
preemptions. Also, It is possible that cpu_slab->freelist is unchanged
but it's freepointer may be changed. This is why we guarantee that
there is no update before, right?

Thanks to the answer, I was able to solve my question.


      parent reply	other threads:[~2021-11-24  0:08 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-21 14:11 Wonhyuk Yang
2021-11-22  9:25 ` Christoph Lameter
2021-11-23  3:32   ` Wonhyuk Yang
2021-11-23  9:38     ` Christoph Lameter
2021-11-23 12:18       ` Wonhyuk Yang
2021-11-23 12:30         ` Wonhyuk Yang
2021-11-23 13:54         ` Christoph Lameter
2021-11-23 23:59         ` Wonhyuk Yang [this message]

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