linux-kernel - Re: [PATCH v2] scsi: st: convert convert get_user_pages() --> pin_user

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Date:   Tue,  9 Jun 2020 22:02:46 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     LKML <linux-kernel@...r.kernel.org>,
        John Hubbard <jhubbard@...dia.com>
Cc:     "Martin K . Petersen" <martin.petersen@...cle.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        Kai Mäkisara <kai.makisara@...umbus.fi>,
        Souptick Joarder <jrdr.linux@...il.com>,
        Bart Van Assche <bvanassche@....org>,
        linux-scsi@...r.kernel.org
Subject: Re: [PATCH v2] scsi: st: convert convert get_user_pages() --> pin_user_pages()

On Tue, 26 May 2020 11:27:09 -0700, John Hubbard wrote:

> This code was using get_user_pages*(), in a "Case 1" scenario
> (Direct IO), using the categorization from [1]. That means that it's
> time to convert the get_user_pages*() + put_page() calls to
> pin_user_pages*() + unpin_user_pages() calls.
> 
> There is some helpful background in [2]: basically, this is a small
> part of fixing a long-standing disconnect between pinning pages, and
> file systems' use of those pages.
> 
> [...]

Applied to 5.8/scsi-queue, thanks!

[1/1] scsi: st: Convert convert get_user_pages() --> pin_user_pages()
      https://git.kernel.org/mkp/scsi/c/08e9cbe75fac

-- 
Martin K. Petersen	Oracle Linux Engineering