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Message-ID: <20210925204842.GD116968@dhcp-10-100-145-180.wdc.com> Date: Sat, 25 Sep 2021 13:48:42 -0700 From: Keith Busch <kbusch@...nel.org> To: Sagi Grimberg <sagi@...mberg.me> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Aditya Garg <gargaditya08@...e.com>, "axboe@...com" <axboe@...com>, "hch@....de" <hch@....de>, "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>, "james.smart@...adcom.com" <james.smart@...adcom.com>, "chaitanya.kulkarni@....com" <chaitanya.kulkarni@....com>, "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "trivial@...nel.org" <trivial@...nel.org> Subject: Re: [PATCH] Urgent bug fix causing Apple SSDs to not work. On Sat, Sep 25, 2021 at 11:34:31PM +0300, Sagi Grimberg wrote: > Exactly the patch that I was going to propose. The only downside > is that we need to access the controller in the hot-path... I initially had the same concern but noticed we already access 'ctrl' in nvme_setup_rw() in this path, so I don't think we will be able to measure the cost of the added check.
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