From: Christoph Hellwig <hch@infradead.org>
To: David Howells <dhowells@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
David Hildenbrand <david@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>
Subject: Re: [PATCH v8 07/10] block: Switch to pinning pages.
Date: Tue, 24 Jan 2023 08:44:43 -0800 [thread overview]
Message-ID: <Y9AK+yW7mZ2SNMcj@infradead.org> (raw)
In-Reply-To: <875433.1674572633@warthog.procyon.org.uk>
On Tue, Jan 24, 2023 at 03:03:53PM +0000, David Howells wrote:
> Christoph Hellwig <hch@infradead.org> wrote:
>
> > It can't. Per your latest branch:
>
> Yes it can. Patch 6:
This never involves the cleanup mode as input. And as I pointed out
in the other mail, there is no need for the FOLL_ flags on the
cleanup side. You can just check the bio flag in bio_release_apges
and call either put_page or unpin_user_page on that. The direct
callers of bio_release_page never mix them pin and get cases anyway.
Let me find some time to code this up if it's easier to understand
that way.
next prev parent reply other threads:[~2023-01-24 16:45 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 [this message]
2023-01-24 16:46 ` David Hildenbrand
2023-01-24 16:59 ` Christoph Hellwig
2023-01-24 18:37 ` David Howells
2023-01-24 18:55 ` Christoph Hellwig
2023-01-24 18:38 ` David Howells
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 14:02 ` 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
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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