From: Jason Gunthorpe <jgg@nvidia.com>
To: David Howells <dhowells@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Christoph Hellwig <hch@infradead.org>,
Matthew Wilcox <willy@infradead.org>,
Jens Axboe <axboe@kernel.dk>, Jan Kara <jack@suse.cz>,
Jeff Layton <jlayton@kernel.org>,
Logan Gunthorpe <logang@deltatee.com>,
linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
linux-mm@kvack.org
Subject: Re: [PATCH v8 10/10] mm: Renumber FOLL_PIN and FOLL_GET down
Date: Tue, 24 Jan 2023 10:31:35 -0400 [thread overview]
Message-ID: <Y8/rx6PQ4z9Tk8qQ@nvidia.com> (raw)
In-Reply-To: <864109.1674570473@warthog.procyon.org.uk>
On Tue, Jan 24, 2023 at 02:27:53PM +0000, David Howells wrote:
> Jason Gunthorpe <jgg@nvidia.com> wrote:
>
> > My point was to change that to take a 'bool unpin' because FOLL_PIN is
> > not to be used outside gup.c
>
> I need a 3-state wrapper. But if I can't do it in gup.c, then I'll have to do
> it elsewhere. As Christoph says, most of the places will only be pinned or
> not-pinned. The whole point was to avoid generating new constants when
> existing constants would do.
What is the 3rd state?
Jason
next prev parent reply other threads:[~2023-01-24 14:31 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-23 17:29 [PATCH v8 00/10] iov_iter: Improve page extraction (pin or just list) David Howells
2023-01-23 17:29 ` [PATCH v8 01/10] iov_iter: Define flags to qualify page extraction David Howells
2023-01-23 18:20 ` Christoph Hellwig
2023-01-24 2:12 ` John Hubbard
2023-01-23 17:29 ` [PATCH v8 02/10] iov_iter: Add a function to extract a page list from an iterator David Howells
2023-01-23 18:21 ` Christoph Hellwig
2023-01-24 14:27 ` David Hildenbrand
2023-01-24 14:35 ` David Howells
2023-01-24 14:37 ` David Hildenbrand
2023-01-24 14:45 ` David Howells
2023-01-24 14:52 ` David Hildenbrand
2023-01-23 17:30 ` [PATCH v8 03/10] mm: Provide a helper to drop a pin/ref on a page David Howells
2023-01-23 18:21 ` Christoph Hellwig
2023-01-24 3:03 ` John Hubbard
2023-01-24 14:28 ` David Hildenbrand
2023-01-24 14:41 ` David Howells
2023-01-24 14:52 ` Christoph Hellwig
2023-01-24 14:53 ` David Hildenbrand
2023-01-24 15:04 ` David Howells
2023-01-23 17:30 ` [PATCH v8 04/10] iomap: don't get an reference on ZERO_PAGE for direct I/O block zeroing David Howells
2023-01-23 18:22 ` Christoph Hellwig
2023-01-24 2:42 ` John Hubbard
2023-01-24 5:59 ` Christoph Hellwig
2023-01-24 7:03 ` John Hubbard
2023-01-24 14:29 ` David Hildenbrand
2023-01-23 17:30 ` [PATCH v8 05/10] block: Fix bio_flagged() so that gcc can better optimise it David Howells
2023-01-23 17:30 ` [PATCH v8 06/10] block: Rename BIO_NO_PAGE_REF to BIO_PAGE_REFFED and invert the meaning David Howells
2023-01-23 18:23 ` Christoph Hellwig
2023-01-23 17:30 ` [PATCH v8 07/10] block: Switch to pinning pages David Howells
2023-01-23 18:23 ` Christoph Hellwig
2023-01-24 14:32 ` David Hildenbrand
2023-01-24 14:47 ` David Howells
2023-01-24 14:53 ` Christoph Hellwig
2023-01-24 15:03 ` David Howells
2023-01-24 16:44 ` Christoph Hellwig
2023-01-24 16:46 ` David Hildenbrand
2023-01-24 18:38 ` David Howells
2023-01-24 16:59 ` Christoph Hellwig
2023-01-24 18:37 ` David Howells
2023-01-24 18:55 ` Christoph Hellwig
2023-01-23 17:30 ` [PATCH v8 08/10] block: Convert bio_iov_iter_get_pages to use iov_iter_extract_pages David Howells
2023-01-23 18:23 ` Christoph Hellwig
2023-01-23 17:30 ` [PATCH v8 09/10] block: convert bio_map_user_iov " David Howells
2023-01-23 18:24 ` Christoph Hellwig
2023-01-23 17:30 ` [PATCH v8 10/10] mm: Renumber FOLL_PIN and FOLL_GET down David Howells
2023-01-23 18:25 ` Christoph Hellwig
2023-01-24 3:08 ` John Hubbard
2023-01-24 3:11 ` John Hubbard
2023-01-24 13:13 ` Jason Gunthorpe
2023-01-24 13:18 ` Christoph Hellwig
2023-01-24 13:43 ` Jason Gunthorpe
2023-01-24 13:40 ` David Howells
2023-01-24 13:46 ` David Howells
2023-01-24 13:47 ` Jason Gunthorpe
2023-01-24 13:57 ` David Howells
2023-01-24 14:00 ` Jason Gunthorpe
2023-01-24 14:11 ` David Howells
2023-01-24 14:14 ` Jason Gunthorpe
2023-01-24 14:27 ` David Howells
2023-01-24 14:31 ` Jason Gunthorpe [this message]
2023-01-24 14:59 ` David Howells
2023-01-24 15:06 ` Jason Gunthorpe
2023-01-24 15:12 ` David Howells
2023-01-24 14:02 ` Christoph Hellwig
2023-01-24 14:12 ` David Howells
2023-01-24 14:13 ` Christoph Hellwig
2023-01-24 14:25 ` David Howells
2023-01-24 7:05 ` David Howells
2023-01-24 2:02 ` [PATCH v8 00/10] iov_iter: Improve page extraction (pin or just list) John Hubbard
2023-01-24 12:44 ` David Hildenbrand
2023-01-24 13:16 ` Christoph Hellwig
2023-01-24 13:22 ` David Hildenbrand
2023-01-24 13:32 ` Christoph Hellwig
2023-01-24 13:35 ` David Hildenbrand
2023-01-24 13:44 ` David Howells
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