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Date: Fri, 15 May 2026 17:10:21 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Byungchul Park <byungchul@sk.com>
Cc: akpm@linux-foundation.org, kernel_team@skhynix.com, ast@kernel.org,
 daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org,
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 linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] Revert "mm: introduce a new page type for page pool in
 page type"
Message-ID: <20260515171021.24a741d0@kernel.org>
In-Reply-To: <20260515034701.17027-1-byungchul@sk.com>
References: <20260515034701.17027-1-byungchul@sk.com>
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On Fri, 15 May 2026 12:47:01 +0900 Byungchul Park wrote:
> This reverts commit db359fccf212e7fa3136e6edbed6228475646fd7.
> 
> Netpp page_type'ed pages might be used in mapping so as to use
> @_mapcount.  However, since @page_type and @_mapcount are union'ed in
> struct page, these two can't be used at the same time.  Revert the
> commit introducing page_type for Netpp for now.
> 
> The patch will be retried once @page_type and @_mapcount get allowed to
> be used at the same time.
> 
> The revert also includes removal of @page_type initialization part
> introduced by commit 735a309b4bfb9e ("net: add net_iov_init() and use it
> to initialize ->page_type"), which will be restored on the retry.

Acked-by: Jakub Kicinski <kuba@kernel.org>