From: Jason Gunthorpe <jgg@nvidia.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: John Hubbard <jhubbard@nvidia.com>,
David Howells <dhowells@redhat.com>,
Al Viro <viro@zeniv.linux.org.uk>,
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 09:43:27 -0400 [thread overview]
Message-ID: <Y8/gfyonV18PVkKU@nvidia.com> (raw)
In-Reply-To: <Y8/ajxH0PF8PaiA9@infradead.org>
On Tue, Jan 24, 2023 at 05:18:07AM -0800, Christoph Hellwig wrote:
> On Tue, Jan 24, 2023 at 09:13:30AM -0400, Jason Gunthorpe wrote:
> > Yeah, I already wrote a similar patch, using the 1<< notation,
> > splitting the internal/external, and rebasing on the move to
> > mm_types.. I can certainly drop that patch if we'd rather do this.
>
> Given that you are doing more work in that area it might be best
> to drop this patch from this series.
>
> > Though, I'm not so keen on using FOLL_ internal flags inside the block
> > layer.. Can you stick with the BIO versions of these?
>
> The block layer doesn't really use it - the new helper in iov_iter.c
> returns it, and the block layer instantly turns it into an internal
> flag. But maybe it should just return a bool pinned (by reference)
> now?
Yes, a bool flag to the new mm helper instead of a FOLL_* seems good
to me
Thanks,
Jason
next prev parent reply other threads:[~2023-01-24 13:43 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230123173007.325544-1-dhowells@redhat.com>
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 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 [this message]
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 14:02 ` Christoph Hellwig
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
2023-01-24 14:59 ` David Howells
2023-01-24 15:06 ` Jason Gunthorpe
2023-01-24 15:12 ` David Howells
2023-01-24 14:12 ` David Howells
2023-01-24 14:13 ` Christoph Hellwig
2023-01-24 14:25 ` David Howells
2023-01-24 7:05 ` David Howells
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