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Date: Tue, 15 Feb 2022 17:34:12 -0800 From: Dan Williams <dan.j.williams@...el.com> To: Shiyang Ruan <ruansy.fnst@...itsu.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-xfs <linux-xfs@...r.kernel.org>, Linux NVDIMM <nvdimm@...ts.linux.dev>, Linux MM <linux-mm@...ck.org>, linux-fsdevel <linux-fsdevel@...r.kernel.org>, "Darrick J. Wong" <djwong@...nel.org>, david <david@...morbit.com>, Christoph Hellwig <hch@...radead.org>, Jane Chu <jane.chu@...cle.com>, Christoph Hellwig <hch@....de> Subject: Re: [PATCH v10 5/9] fsdax: Introduce dax_load_page() On Thu, Jan 27, 2022 at 4:41 AM Shiyang Ruan <ruansy.fnst@...itsu.com> wrote: > > The current dax_lock_page() locks dax entry by obtaining mapping and > index in page. To support 1-to-N RMAP in NVDIMM, we need a new function > to lock a specific dax entry I do not see a call to dax_lock_entry() in this function, what keeps this lookup valid after xas_unlock_irq()?
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