linux-kernel - Re: [PATCH 01/12] Revert "mm: pgtable: make ptlock be freed by RCU"

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Message-Id: <20241215221015.a567dbf38c9a98d672aecd3e@linux-foundation.org>
Date: Sun, 15 Dec 2024 22:10:15 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Qi Zheng <zhengqi.arch@...edance.com>
Cc: Yu Zhao <yuzhao@...gle.com>, peterz@...radead.org, tglx@...utronix.de,
 david@...hat.com, jannh@...gle.com, hughd@...gle.com, willy@...radead.org,
 muchun.song@...ux.dev, vbabka@...nel.org, lorenzo.stoakes@...cle.com,
 rientjes@...gle.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/12] Revert "mm: pgtable: make ptlock be freed by RCU"

On Sun, 15 Dec 2024 14:29:38 +0800 Qi Zheng <zhengqi.arch@...edance.com> wrote:

> > 
> > Acked-by: Yu Zhao <yuzhao@...gle.com>
> 
> Thanks! Once the review of this patch series is completed, we can simply
> drop "mm: pgtable: make ptlock be freed by RCU" from mm tree.

Can we drop it now and does the remainder of the series "synchronously
scan and reclaim empty user PTE pages v4" remain valid and useful?