linux-kernel - Re: [PATCH v3] brd: use page reference to protect page lifetime

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Message-Id: <175673746364.13707.6940913855936222519.b4-ty@kernel.dk>
Date: Mon, 01 Sep 2025 08:37:43 -0600
From: Jens Axboe <axboe@...nel.dk>
To: hch@....de, houtao1@...wei.com, Yu Kuai <yukuai1@...weicloud.com>
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, 
 yukuai3@...wei.com, yi.zhang@...wei.com, yangerkun@...wei.com, 
 johnny.chenyi@...wei.com
Subject: Re: [PATCH v3] brd: use page reference to protect page lifetime


On Mon, 11 Aug 2025 14:56:28 +0800, Yu Kuai wrote:
> As discussed [1], hold rcu for copying data from/to page is too heavy,
> it's better to protect page with rcu around for page lookup and then
> grab a reference to prevent page to be freed by discard.
> 
> [1] https://lore.kernel.org/all/eb41cab3-5946-4fe3-a1be-843dd6fca159@kernel.dk/
> 
> 
> [...]

Applied, thanks!

[1/1] brd: use page reference to protect page lifetime
      commit: 2a0614522885b136e9e650791c794dd49abb5b31

Best regards,
-- 
Jens Axboe