Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator

[PATCH v11 0/8] iov_iter: Improve page extraction (pin or just list) · David Howells <dhowells@redhat.com> · 2023-01-26
[PATCH v11 1/8] iov_iter: Define flags to qualify page extraction. · David Howells <dhowells@redhat.com> · 2023-01-26
Re: [PATCH v11 1/8] iov_iter: Define flags to qualify page extraction. · Al Viro <viro@zeniv.linux.org.uk> · 2023-01-26
Re: [PATCH v11 1/8] iov_iter: Define flags to qualify page extraction. · David Hildenbrand <hidden> · 2023-01-26
[PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · David Howells <dhowells@redhat.com> · 2023-01-26
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · Al Viro <viro@zeniv.linux.org.uk> · 2023-01-26
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · Al Viro <viro@zeniv.linux.org.uk> · 2023-01-26
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · John Hubbard <jhubbard@nvidia.com> · 2023-01-26
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · David Hildenbrand <hidden> · 2023-01-26
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · David Howells <dhowells@redhat.com> · 2023-01-26
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · David Hildenbrand <hidden> · 2023-01-27
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · Al Viro <viro@zeniv.linux.org.uk> · 2023-01-27
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · Al Viro <viro@zeniv.linux.org.uk> · 2023-01-27
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · Jan Kara <jack@suse.cz> · 2023-01-27
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · Al Viro <viro@zeniv.linux.org.uk> · 2023-01-27
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · Jan Kara <jack@suse.cz> · 2023-01-27
Re: [PATCH v11 2/8] iov_iter: Add a function to extract a page list from an iterator · David Hildenbrand <hidden> · 2023-01-27
[PATCH v11 3/8] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing · David Howells <dhowells@redhat.com> · 2023-01-26
Re: [PATCH v11 3/8] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing · Christoph Hellwig <hch@infradead.org> · 2023-01-26
[PATCH v11 5/8] block: Replace BIO_NO_PAGE_REF with BIO_PAGE_REFFED with inverted logic · David Howells <dhowells@redhat.com> · 2023-01-26
[PATCH v11 4/8] block: Fix bio_flagged() so that gcc can better optimise it · David Howells <dhowells@redhat.com> · 2023-01-26
[PATCH v11 6/8] block: Add BIO_PAGE_PINNED and associated infrastructure · David Howells <dhowells@redhat.com> · 2023-01-26
[PATCH v11 8/8] block: convert bio_map_user_iov to use iov_iter_extract_pages · David Howells <dhowells@redhat.com> · 2023-01-26
[PATCH v11 7/8] block: Convert bio_iov_iter_get_pages to use iov_iter_extract_pages · David Howells <dhowells@redhat.com> · 2023-01-26
[PATCH v11 0/8] iov_iter: Improve page extraction (pin or just list) · Naresh Kamboju <hidden> · 2023-01-30

From: David Howells <dhowells@redhat.com>
Date: 2023-01-26 23:59:19
Also in: linux-fsdevel, linux-mm, lkml

Al says that pinning a page (ie. FOLL_PIN) could cause a deadlock if a page is
vmspliced into a pipe with the pipe holding a pin on it because pinned pages
are removed from all page tables.  Is this actually the case?  I can't see
offhand where in mm/gup.c it does this.

David

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