From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E5D9518F; Tue, 28 Nov 2023 05:00:03 -0800 (PST) Received: by verein.lst.de (Postfix, from userid 2407) id 52971227A87; Tue, 28 Nov 2023 14:00:01 +0100 (CET) Date: Tue, 28 Nov 2023 14:00:00 +0100 From: Christoph Hellwig To: Yu Kuai Cc: hch@lst.de, ming.lei@redhat.com, axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai3@huawei.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: Re: [PATCH v4 2/2] block: warn once for each partition in bio_check_ro() Message-ID: <20231128130000.GB7984@lst.de> References: <20231128123027.971610-1-yukuai1@huaweicloud.com> <20231128123027.971610-3-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231128123027.971610-3-yukuai1@huaweicloud.com> User-Agent: Mutt/1.5.17 (2007-11-01) On Tue, Nov 28, 2023 at 08:30:27PM +0800, Yu Kuai wrote: > From: Yu Kuai > > Commit 1b0a151c10a6 ("blk-core: use pr_warn_ratelimited() in > bio_check_ro()") fix message storm by limit the rate, however, there > will still be lots of message in the long term. Fix it better by warn > once for each partition. The new field is in the same dword alignment as bd_make_it_fail and could in theory corrupt it, at least on alpha. I guess we're fine, because if you enable CONFIG_FAIL_MAKE_REQUEST on alpha you're asking for this. I still hope we can clean up these non-atomic bools and replace them with bitops soon. Signed-off-by: Christoph Hellwig