linux-kernel - Re: [PATCH net-next 2/6] page_frag: unify gfp bit for order 3 page allocation

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Message-ID: <20231206191539.06d955f3@kernel.org>
Date:   Wed, 6 Dec 2023 19:15:39 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Yunsheng Lin <linyunsheng@...wei.com>
Cc:     <davem@...emloft.net>, <pabeni@...hat.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Alexander Duyck <alexander.duyck@...il.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Eric Dumazet <edumazet@...gle.com>, <kvm@...r.kernel.org>,
        <virtualization@...ts.linux.dev>, <linux-mm@...ck.org>
Subject: Re: [PATCH net-next 2/6] page_frag: unify gfp bit for order 3 page
 allocation

On Tue, 5 Dec 2023 19:34:40 +0800 Yunsheng Lin wrote:
> __GFP_DIRECT_RECLAIM is xor'd to avoid
> direct reclaim in skb_page_frag_refill(), but it is not
> xor'd in __page_frag_cache_refill().

xor is not the same thing as masking a bit off.
The patch itself LGTM.