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Date: Sat, 1 Jun 2024 15:34:30 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Ofir Gal <ofir.gal@volumez.com>
Cc: davem@davemloft.net, linux-block@vger.kernel.org,
 linux-nvme@lists.infradead.org, netdev@vger.kernel.org,
 ceph-devel@vger.kernel.org, dhowells@redhat.com, edumazet@google.com,
 pabeni@redhat.com, kbusch@kernel.org, axboe@kernel.dk, hch@lst.de,
 sagi@grimberg.me, philipp.reisner@linbit.com, lars.ellenberg@linbit.com,
 christoph.boehmwalder@linbit.com, idryomov@gmail.com, xiubli@redhat.com
Subject: Re: [PATCH v2 0/4] bugfix: Introduce sendpages_ok() to check
 sendpage_ok() on contiguous pages
Message-ID: <20240601153430.19416989@kernel.org>
In-Reply-To: <20240530142417.146696-1-ofir.gal@volumez.com>
References: <20240530142417.146696-1-ofir.gal@volumez.com>
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On Thu, 30 May 2024 17:24:10 +0300 Ofir Gal wrote:
> skbuff: before sendpage_ok - i: 0. page: 0x654eccd7 (pfn: 120755)
> skbuff: before sendpage_ok - i: 1. page: 0x1666a4da (pfn: 120756)
> skbuff: before sendpage_ok - i: 2. page: 0x54f9f140 (pfn: 120757)

noob question, how do you get 3 contiguous pages, the third of which 
is slab? is_slab doesn't mean what I think it does, or we got extremely
lucky with kmalloc?