From: Jens Axboe <axboe@kernel.dk>
To: Al Viro <viro@zeniv.linux.org.uk>,
Christoph Hellwig <hch@infradead.org>,
David Howells <dhowells@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>, Jan Kara <jack@suse.cz>,
Jeff Layton <jlayton@kernel.org>,
David Hildenbrand <david@redhat.com>,
Logan Gunthorpe <logang@deltatee.com>,
Hillf Danton <hdanton@sina.com>,
Christian Brauner <brauner@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Jason Gunthorpe <jgg@ziepe.ca>
Subject: Re: [PATCH v21 0/6] block: Use page pinning
Date: Tue, 23 May 2023 15:38:31 -0600 [thread overview]
Message-ID: <168487791137.449781.3170440352656135902.b4-ty@kernel.dk> (raw)
In-Reply-To: <20230522205744.2825689-1-dhowells@redhat.com>
On Mon, 22 May 2023 21:57:38 +0100, David Howells wrote:
> This patchset rolls page-pinning out to the bio struct and the block layer,
> using iov_iter_extract_pages() to get pages and noting with BIO_PAGE_PINNED
> if the data pages attached to a bio are pinned. If the data pages come
> from a non-user-backed iterator, then the pages are left unpinned and
> unref'd, relying on whoever set up the I/O to do the retaining.
>
> This requires the splice-read patchset to have been applied first,
> otherwise reversion of the ITER_PAGE iterator can race with truncate and
> return pages to the allocator whilst they're still undergoing DMA[2].
>
> [...]
Applied, thanks!
[1/6] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing
commit: 9e73bb36b189ec73c7062ec974e0ff287c1aa152
[2/6] block: Fix bio_flagged() so that gcc can better optimise it
commit: b9cc607a7f722c374540b2a7c973382592196549
[3/6] block: Replace BIO_NO_PAGE_REF with BIO_PAGE_REFFED with inverted logic
commit: 100ae68dac60a0688082dcaf3e436606ec0fd51f
[4/6] block: Add BIO_PAGE_PINNED and associated infrastructure
commit: 84d9fe8b7ea6a53fd93506583ff33a408f95ac60
[5/6] block: Convert bio_iov_iter_get_pages to use iov_iter_extract_pages
commit: b7c96963925fe08d4ef175b7d438c0017155807c
[6/6] block: convert bio_map_user_iov to use iov_iter_extract_pages
commit: 36b61bb07963b13de4cc03a945aa25b9ffc7d003
Best regards,
--
Jens Axboe
next prev parent reply other threads:[~2023-05-23 21:38 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-22 20:57 [PATCH v21 0/6] block: Use page pinning David Howells
2023-05-22 20:57 ` [PATCH v21 1/6] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing David Howells
2023-05-23 8:07 ` Jan Kara
2023-05-23 12:35 ` Christian Brauner
2023-05-22 20:57 ` [PATCH v21 2/6] block: Fix bio_flagged() so that gcc can better optimise it David Howells
2023-05-23 8:07 ` Jan Kara
2023-05-23 12:37 ` Christian Brauner
2023-05-22 20:57 ` [PATCH v21 3/6] block: Replace BIO_NO_PAGE_REF with BIO_PAGE_REFFED with inverted logic David Howells
2023-05-23 8:07 ` Jan Kara
2023-05-22 20:57 ` [PATCH v21 4/6] block: Add BIO_PAGE_PINNED and associated infrastructure David Howells
2023-05-23 8:08 ` Jan Kara
2023-05-22 20:57 ` [PATCH v21 5/6] block: Convert bio_iov_iter_get_pages to use iov_iter_extract_pages David Howells
2023-05-23 8:15 ` Jan Kara
2023-05-22 20:57 ` [PATCH v21 6/6] block: convert bio_map_user_iov " David Howells
2023-05-23 8:14 ` Jan Kara
2023-05-23 6:39 ` [PATCH v21 0/6] block: Use page pinning Christoph Hellwig
2023-05-23 20:16 ` Extending page pinning into fs/direct-io.c David Howells
2023-05-24 5:55 ` Christoph Hellwig
2023-05-24 7:06 ` David Hildenbrand
2023-05-24 8:47 ` David Howells
2023-05-25 9:51 ` Christoph Hellwig
2023-05-25 16:31 ` Linus Torvalds
2023-05-25 16:45 ` David Hildenbrand
2023-05-25 17:04 ` Linus Torvalds
2023-05-25 17:15 ` David Howells
2023-05-25 17:25 ` Linus Torvalds
2023-05-25 17:07 ` David Howells
2023-05-25 17:17 ` Linus Torvalds
2023-05-25 17:00 ` David Howells
2023-05-25 17:13 ` Linus Torvalds
2023-05-23 21:38 ` Jens Axboe [this message]
2023-05-24 5:52 ` [PATCH v21 0/6] block: Use page pinning Christoph Hellwig
2023-05-24 14:43 ` Jens Axboe
2023-05-24 7:35 ` David Howells
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