From: David Howells <dhowells@redhat.com>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>,
Paolo Abeni <pabeni@redhat.com>,
John Hubbard <jhubbard@nvidia.com>,
Christoph Hellwig <hch@lst.de>, Paulo Alcantara <pc@cjr.nz>,
linux-scsi@vger.kernel.org, Steve French <sfrench@samba.org>,
Stefan Metzmacher <metze@samba.org>,
Miklos Szeredi <miklos@szeredi.hu>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Logan Gunthorpe <logang@deltatee.com>,
Jeff Layton <jlayton@kernel.org>,
Jakub Kicinski <kuba@kernel.org>,
netdev@vger.kernel.org,
Rohith Surabattula <rohiths.msft@gmail.com>,
Eric Dumazet <edumazet@google.com>,
Matthew Wilcox <willy@infradead.org>,
Anna Schumaker <anna@kernel.org>, Jens Axboe <axboe@kernel.dk>,
Shyam Prasad N <nspmangalore@gmail.com>,
Tom Talpey <tom@talpey.com>,
linux-rdma@vger.kernel.org,
Trond Myklebust <trond.myklebust@hammerspace.com>,
Christian Schoenebeck <linux_oss@crudebyte.com>,
linux-mm@kvack.org, linux-crypto@vger.kernel.org,
linux-nfs@vger.kernel.org, v9fs-developer@lists.sourceforge.net,
Latchesar Ionkov <lucho@ionkov.net>,
linux-fsdevel@vger.kernel.org,
Eric Van Hensbergen <ericvh@gmail.com>,
Long Li <longli@microsoft.com>, Jan Kara <jack@suse.cz>,
linux-cachefs@redhat.com, linux-block@vger.kernel.org,
Dominique Martinet <asmadeus@codewreck.org>,
Namjae Jeon <linkinjeon@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
linux-cifs@vger.kernel.org, Steve French <smfrench@gmail.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
dhowells@redhat.com, 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
Subject: [PATCH v6 00/34] iov_iter: Improve page extraction (ref, pin or just list)
Date: Mon, 16 Jan 2023 23:07:57 +0000 [thread overview]
Message-ID: <167391047703.2311931.8115712773222260073.stgit@warthog.procyon.org.uk> (raw)
Hi Al, Christoph,
Here are patches clean up some use of READ/WRITE and ITER_SOURCE/DEST,
patches to provide support for extracting pages from an iov_iter and a
patch to use the primary extraction function in the block layer bio code.
I've also added a bunch of other conversions and had a tentative stab at
the networking code.
The patches make the following changes:
(1) Deal with switching from using the iterator data_source to indicate
the I/O direction to deriving this from other information, eg.:
IOCB_WRITE, IOMAP_WRITE and the REQ_OP_* number. This allows
iov_iter_rw() to be removed eventually.
(2) Define FOLL_SOURCE_BUF and FOLL_DEST_BUF and pass these into
iov_iter_get_pages*() to indicate the I/O direction with regards to
how the buffer described by the iterator is to be used. This is
included in the gup_flags passed in with Logan's patches.
Calls to iov_iter_get_pages*2() are replaced with calls to
iov_iter_get_pages*() and the former is removed.
(3) Add a function, iov_iter_extract_pages() to replace
iov_iter_get_pages*() that gets refs, pins or just lists the pages as
appropriate to the iterator type and the I/O direction.
Add a function, iov_iter_extract_mode() that will indicate from the
iterator type and the I/O direction how the cleanup is to be
performed, returning FOLL_GET, FOLL_PIN or 0.
Add a function, folio_put_unpin(), and a wrapper, page_put_unpin(),
that take a page and the return from iov_iter_extract_mode() and do
the right thing to clean up the page.
(4) Make the bio struct carry a pair of flags to indicate the cleanup
mode. BIO_NO_PAGE_REF is replaced with BIO_PAGE_REFFED (equivalent to
FOLL_GET) and BIO_PAGE_PINNED (equivalent to BIO_PAGE_PINNED) is
added. These are forced to have the same value as the FOLL_* flags so
they can be passed to the previously mentioned cleanup function.
(5) Make the iter-to-bio code use iov_iter_extract_pages() to
appropriately retain the pages and clean them up later.
(6) Fix bio_flagged() so that it doesn't prevent a gcc optimisation.
(7) Add a function in netfslib, netfs_extract_user_iter(), to extract a
UBUF- or IOVEC-type iterator to a page list in a BVEC-type iterator,
with all the pages suitably ref'd or pinned.
(8) Add a function in netfslib, netfs_extract_iter_to_sg(), to extract a
UBUF-, IOVEC-, BVEC-, XARRAY- or KVEC-type iterator to a scatterlist.
The first two types appropriately ref or pin pages; the latter three
don't perform any retention, leaving that to the caller.
Note that I can make use of this in the SCSI and AF_ALG code and
possibly the networking code, so this might merit being moved to core
code.
(9) Make AF_ALG use iov_iter_extract_pages() and possibly go further and
make it use netfs_extract_iter_to_sg() instead.
(10) Make SCSI vhost use netfs_extract_iter_to_sg().
(11) Make fs/direct-io.c use iov_iter_extract_pages().
(13) Make splice-to-pipe use iov_iter_extract_pages(), but limit the usage
to a cleanup mode of FOLL_GET.
(13) Make the 9P, FUSE and NFS filesystems use iov_iter_extract_pages().
(14) Make the CIFS filesystem use iterators from the top all the way down
to the socket on the simple path. Make it use
netfs_extract_user_iter() to use an XARRAY-type iterator or to build a
BVEC-type iterator in the top layers from a UBUF- or IOVEC-type
iterator and attach the iterator to the operation descriptors.
netfs_extract_iter_to_sg() is used to build scatterlists for doing
transport crypto and a function, smb_extract_iter_to_rdma(), is
provided to build an RDMA SGE list directly from an iterator without
going via a page list and then a scatter list.
(15) A couple of work-in-progress patches to try and make sk_buff fragments
record the information needed to clean them up in the lowest two bits
of the page pointer in the fragment struct.
This leaves:
(*) Four calls to iov_iter_get_pages() in CEPH. That will be helped by
patches to pass an iterator down to the transport layer instead of
converting to a page list high up and passing that down, but the
transport layer could do with some massaging so that it doesn't covert
the iterator to a page list and then the pages individually back to
iterators to pass to the socket.
(*) One call to iov_iter_get_pages() each in the networking core, RDS and
TLS, all related to zero-copy. TLS seems to do zerocopy-read (or
maybe decrypt-offload) and should be doing FOLL_PIN, not FOLL_GET for
user-provided buffers.
Changes:
========
ver #6)
- Fix write() syscall and co. not setting IOCB_WRITE.
- Added iocb_is_read() and iocb_is_write() to check IOCB_WRITE.
- Use op_is_write() in bio_copy_user_iov().
- Drop the iterator direction checks from smbd_recv().
- Define FOLL_SOURCE_BUF and FOLL_DEST_BUF and pass them in as part of
gup_flags to iov_iter_get/extract_pages*().
- Replace iov_iter_get_pages*2() with iov_iter_get_pages*() and remove.
- Add back the function to indicate the cleanup mode.
- Drop the cleanup_mode return arg to iov_iter_extract_pages().
- Provide a helper to clean up a page.
- Renumbered FOLL_GET and FOLL_PIN and made BIO_PAGE_REFFED/PINNED have
the same numerical values, enforced with an assertion.
- Converted AF_ALG, SCSI vhost, generic DIO, FUSE, splice to pipe, 9P and
NFS.
- Added in the patches to make CIFS do top-to-bottom iterators and use
various of the added extraction functions.
- Added a pair of work-in-progess patches to make sk_buff fragments store
FOLL_GET and FOLL_PIN.
ver #5)
- Replace BIO_NO_PAGE_REF with BIO_PAGE_REFFED and split into own patch.
- Transcribe FOLL_GET/PIN into BIO_PAGE_REFFED/PINNED flags.
- Add patch to allow bio_flagged() to be combined by gcc.
ver #4)
- Drop the patch to move the FOLL_* flags to linux/mm_types.h as they're
no longer referenced by linux/uio.h.
- Add ITER_SOURCE/DEST cleanup patches.
- Make iov_iter/netfslib iter extraction patches use ITER_SOURCE/DEST.
- Allow additional gup_flags to be passed into iov_iter_extract_pages().
- Add struct bio patch.
ver #3)
- Switch to using EXPORT_SYMBOL_GPL to prevent indirect 3rd-party access
to get/pin_user_pages_fast()[1].
ver #2)
- Rolled the extraction cleanup mode query function into the extraction
function, returning the indication through the argument list.
- Fixed patch 4 (extract to scatterlist) to actually use the new
extraction API.
I've pushed the patches (excluding the two WIP networking patches) here
also:
https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=iov-extract
David
Link: https://lore.kernel.org/r/Y3zFzdWnWlEJ8X8/@infradead.org/ [1]
Link: https://lore.kernel.org/r/166697254399.61150.1256557652599252121.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/166722777223.2555743.162508599131141451.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/166732024173.3186319.18204305072070871546.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/166869687556.3723671.10061142538708346995.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/166920902005.1461876.2786264600108839814.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/166997419665.9475.15014699817597102032.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/167305160937.1521586.133299343565358971.stgit@warthog.procyon.org.uk/ # v4
Link: https://lore.kernel.org/r/167344725490.2425628.13771289553670112965.stgit@warthog.procyon.org.uk/ # v5
Previous versions of the CIFS patch sets can be found here:
Link: https://lore.kernel.org/r/164311902471.2806745.10187041199819525677.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/164928615045.457102.10607899252434268982.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/165211416682.3154751.17287804906832979514.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/165348876794.2106726.9240233279581920208.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/165364823513.3334034.11209090728654641458.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/166126392703.708021.14465850073772688008.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/166697254399.61150.1256557652599252121.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/166732024173.3186319.18204305072070871546.stgit@warthog.procyon.org.uk/ # rfc
---
David Howells (34):
vfs: Unconditionally set IOCB_WRITE in call_write_iter()
iov_iter: Use IOCB/IOMAP_WRITE/op_is_write rather than iterator direction
iov_iter: Pass I/O direction into iov_iter_get_pages*()
iov_iter: Remove iov_iter_get_pages2/pages_alloc2()
iov_iter: Change the direction macros into an enum
iov_iter: Use the direction in the iterator functions
iov_iter: Add a function to extract a page list from an iterator
mm: Provide a helper to drop a pin/ref on a page
bio: Rename BIO_NO_PAGE_REF to BIO_PAGE_REFFED and invert the meaning
mm, block: Make BIO_PAGE_REFFED/PINNED the same as FOLL_GET/PIN numerically
iov_iter, block: Make bio structs pin pages rather than ref'ing if appropriate
bio: Fix bio_flagged() so that gcc can better optimise it
netfs: Add a function to extract a UBUF or IOVEC into a BVEC iterator
netfs: Add a function to extract an iterator into a scatterlist
af_alg: Pin pages rather than ref'ing if appropriate
af_alg: [RFC] Use netfs_extract_iter_to_sg() to create scatterlists
scsi: [RFC] Use netfs_extract_iter_to_sg()
dio: Pin pages rather than ref'ing if appropriate
fuse: Pin pages rather than ref'ing if appropriate
vfs: Make splice use iov_iter_extract_pages()
9p: Pin pages rather than ref'ing if appropriate
nfs: Pin pages rather than ref'ing if appropriate
cifs: Implement splice_read to pass down ITER_BVEC not ITER_PIPE
cifs: Add a function to build an RDMA SGE list from an iterator
cifs: Add a function to Hash the contents of an iterator
cifs: Add some helper functions
cifs: Add a function to read into an iter from a socket
cifs: Change the I/O paths to use an iterator rather than a page list
cifs: Build the RDMA SGE list directly from an iterator
cifs: Remove unused code
cifs: Fix problem with encrypted RDMA data read
cifs: DIO to/from KVEC-type iterators should now work
net: [RFC][WIP] Mark each skb_frags as to how they should be cleaned up
net: [RFC][WIP] Make __zerocopy_sg_from_iter() correctly pin or leave pages unref'd
block/bio.c | 48 +-
block/blk-map.c | 26 +-
block/blk.h | 25 +
block/fops.c | 8 +-
crypto/af_alg.c | 57 +-
crypto/algif_hash.c | 20 +-
drivers/net/tun.c | 2 +-
drivers/vhost/scsi.c | 75 +-
fs/9p/vfs_addr.c | 2 +-
fs/affs/file.c | 4 +-
fs/ceph/addr.c | 2 +-
fs/ceph/file.c | 16 +-
fs/cifs/Kconfig | 1 +
fs/cifs/cifsencrypt.c | 172 +++-
fs/cifs/cifsfs.c | 12 +-
fs/cifs/cifsfs.h | 6 +
fs/cifs/cifsglob.h | 66 +-
fs/cifs/cifsproto.h | 11 +-
fs/cifs/cifssmb.c | 13 +-
fs/cifs/connect.c | 16 +
fs/cifs/file.c | 1851 +++++++++++++++++--------------------
fs/cifs/fscache.c | 22 +-
fs/cifs/fscache.h | 10 +-
fs/cifs/misc.c | 132 +--
fs/cifs/smb2ops.c | 374 ++++----
fs/cifs/smb2pdu.c | 45 +-
fs/cifs/smbdirect.c | 511 ++++++----
fs/cifs/smbdirect.h | 4 +-
fs/cifs/transport.c | 57 +-
fs/dax.c | 6 +-
fs/direct-io.c | 77 +-
fs/exfat/inode.c | 6 +-
fs/ext2/inode.c | 2 +-
fs/f2fs/file.c | 10 +-
fs/fat/inode.c | 4 +-
fs/fuse/dax.c | 2 +-
fs/fuse/dev.c | 24 +-
fs/fuse/file.c | 34 +-
fs/fuse/fuse_i.h | 1 +
fs/hfs/inode.c | 2 +-
fs/hfsplus/inode.c | 2 +-
fs/iomap/direct-io.c | 6 +-
fs/jfs/inode.c | 2 +-
fs/netfs/Makefile | 1 +
fs/netfs/iterator.c | 371 ++++++++
fs/nfs/direct.c | 32 +-
fs/nilfs2/inode.c | 2 +-
fs/ntfs3/inode.c | 2 +-
fs/ocfs2/aops.c | 2 +-
fs/orangefs/inode.c | 2 +-
fs/reiserfs/inode.c | 2 +-
fs/splice.c | 10 +-
fs/udf/inode.c | 2 +-
include/crypto/if_alg.h | 7 +-
include/linux/bio.h | 23 +-
include/linux/blk_types.h | 3 +-
include/linux/fs.h | 11 +
include/linux/mm.h | 32 +-
include/linux/netfs.h | 6 +
include/linux/skbuff.h | 124 ++-
include/linux/uio.h | 83 +-
io_uring/net.c | 2 +-
lib/iov_iter.c | 428 ++++++++-
mm/gup.c | 47 +
mm/vmalloc.c | 1 +
net/9p/trans_common.c | 6 +-
net/9p/trans_common.h | 3 +-
net/9p/trans_virtio.c | 91 +-
net/bpf/test_run.c | 2 +-
net/core/datagram.c | 23 +-
net/core/gro.c | 2 +-
net/core/skbuff.c | 16 +-
net/core/skmsg.c | 4 +-
net/ipv4/ip_output.c | 2 +-
net/ipv4/tcp.c | 4 +-
net/ipv6/esp6.c | 5 +-
net/ipv6/ip6_output.c | 2 +-
net/packet/af_packet.c | 2 +-
net/rds/message.c | 4 +-
net/tls/tls_sw.c | 5 +-
net/xfrm/xfrm_ipcomp.c | 2 +-
81 files changed, 3006 insertions(+), 2126 deletions(-)
create mode 100644 fs/netfs/iterator.c
next reply other threads:[~2023-01-16 23:09 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-16 23:07 David Howells [this message]
2023-01-16 23:08 ` [PATCH v6 01/34] vfs: Unconditionally set IOCB_WRITE in call_write_iter() David Howells
2023-01-17 7:52 ` Christoph Hellwig
2023-01-18 22:11 ` Al Viro
2023-01-19 5:44 ` Christoph Hellwig
2023-01-19 11:34 ` David Howells
2023-01-19 16:48 ` Christoph Hellwig
2023-01-19 21:14 ` David Howells
2023-01-17 8:28 ` David Howells
2023-01-17 8:44 ` Christoph Hellwig
2023-01-17 11:11 ` David Howells
2023-01-17 11:11 ` Christoph Hellwig
2023-01-18 22:05 ` Al Viro
2023-01-19 5:41 ` Christoph Hellwig
2023-01-19 10:01 ` David Howells
2023-01-19 16:46 ` Christoph Hellwig
2023-01-19 11:06 ` David Howells
2023-01-16 23:08 ` [PATCH v6 02/34] iov_iter: Use IOCB/IOMAP_WRITE/op_is_write rather than iterator direction David Howells
2023-01-17 7:55 ` Christoph Hellwig
2023-01-18 22:18 ` Al Viro
2023-01-16 23:08 ` [PATCH v6 03/34] iov_iter: Pass I/O direction into iov_iter_get_pages*() David Howells
2023-01-17 7:57 ` Christoph Hellwig
2023-01-17 8:07 ` David Hildenbrand
2023-01-17 8:09 ` Christoph Hellwig
2023-01-18 23:03 ` Al Viro
2023-01-19 0:15 ` Al Viro
2023-01-19 2:11 ` Al Viro
2023-01-19 5:47 ` Christoph Hellwig
2023-01-19 5:47 ` Christoph Hellwig
2023-01-17 8:44 ` David Howells
2023-01-17 8:46 ` Christoph Hellwig
2023-01-17 8:47 ` David Hildenbrand
2023-01-16 23:08 ` [PATCH v6 04/34] iov_iter: Remove iov_iter_get_pages2/pages_alloc2() David Howells
2023-01-16 23:08 ` [PATCH v6 05/34] iov_iter: Change the direction macros into an enum David Howells
2023-01-18 23:14 ` Al Viro
2023-01-18 23:17 ` David Howells
2023-01-18 23:19 ` Al Viro
2023-01-18 23:24 ` David Howells
2023-01-16 23:08 ` [PATCH v6 06/34] iov_iter: Use the direction in the iterator functions David Howells
2023-01-17 7:58 ` Christoph Hellwig
2023-01-18 22:28 ` Al Viro
2023-01-19 5:45 ` Christoph Hellwig
2023-01-18 23:15 ` Al Viro
2023-01-16 23:08 ` [PATCH v6 07/34] iov_iter: Add a function to extract a page list from an iterator David Howells
2023-01-17 8:01 ` Christoph Hellwig
2023-01-17 8:19 ` David Howells
2023-01-16 23:08 ` [PATCH v6 08/34] mm: Provide a helper to drop a pin/ref on a page David Howells
2023-01-17 8:02 ` Christoph Hellwig
2023-01-17 8:21 ` David Howells
2023-01-16 23:09 ` [PATCH v6 09/34] bio: Rename BIO_NO_PAGE_REF to BIO_PAGE_REFFED and invert the meaning David Howells
2023-01-17 8:02 ` Christoph Hellwig
2023-01-16 23:09 ` [PATCH v6 10/34] mm, block: Make BIO_PAGE_REFFED/PINNED the same as FOLL_GET/PIN numerically David Howells
2023-01-17 8:03 ` Christoph Hellwig
2023-01-16 23:09 ` [PATCH v6 11/34] iov_iter, block: Make bio structs pin pages rather than ref'ing if appropriate David Howells
2023-01-17 8:07 ` Christoph Hellwig
2023-01-17 8:26 ` David Howells
2023-01-17 8:44 ` Christoph Hellwig
2023-01-16 23:09 ` [PATCH v6 12/34] bio: Fix bio_flagged() so that gcc can better optimise it David Howells
2023-01-17 8:07 ` Christoph Hellwig
2023-01-16 23:09 ` [PATCH v6 13/34] netfs: Add a function to extract a UBUF or IOVEC into a BVEC iterator David Howells
2023-01-16 23:09 ` [PATCH v6 14/34] netfs: Add a function to extract an iterator into a scatterlist David Howells
2023-01-16 23:09 ` [PATCH v6 15/34] af_alg: Pin pages rather than ref'ing if appropriate David Howells
2023-01-16 23:09 ` [PATCH v6 16/34] af_alg: [RFC] Use netfs_extract_iter_to_sg() to create scatterlists David Howells
2023-01-16 23:10 ` [PATCH v6 17/34] scsi: [RFC] Use netfs_extract_iter_to_sg() David Howells
2023-01-16 23:10 ` [PATCH v6 18/34] dio: Pin pages rather than ref'ing if appropriate David Howells
2023-01-19 5:04 ` Al Viro
2023-01-19 5:51 ` Christoph Hellwig
2023-01-16 23:10 ` [PATCH v6 19/34] fuse: " David Howells
2023-01-16 23:10 ` [PATCH v6 20/34] vfs: Make splice use iov_iter_extract_pages() David Howells
2023-01-19 2:31 ` Al Viro
2023-01-16 23:10 ` [PATCH v6 21/34] 9p: Pin pages rather than ref'ing if appropriate David Howells
2023-01-19 2:52 ` Al Viro
2023-01-19 16:44 ` David Howells
2023-01-19 16:51 ` Christoph Hellwig
2023-01-16 23:10 ` [PATCH v6 22/34] nfs: " David Howells
2023-01-16 23:10 ` [PATCH v6 23/34] cifs: Implement splice_read to pass down ITER_BVEC not ITER_PIPE David Howells
2023-01-16 23:10 ` [PATCH v6 24/34] cifs: Add a function to build an RDMA SGE list from an iterator David Howells
2023-01-16 23:11 ` [PATCH v6 25/34] cifs: Add a function to Hash the contents of " David Howells
2023-01-16 23:11 ` [PATCH v6 26/34] cifs: Add some helper functions David Howells
2023-01-16 23:11 ` [PATCH v6 27/34] cifs: Add a function to read into an iter from a socket David Howells
2023-01-16 23:11 ` [PATCH v6 28/34] cifs: Change the I/O paths to use an iterator rather than a page list David Howells
2023-01-16 23:11 ` [PATCH v6 29/34] cifs: Build the RDMA SGE list directly from an iterator David Howells
2023-01-16 23:11 ` [PATCH v6 30/34] cifs: Remove unused code David Howells
2023-01-16 23:11 ` [PATCH v6 31/34] cifs: Fix problem with encrypted RDMA data read David Howells
2023-01-19 16:25 ` Stefan Metzmacher
2023-01-16 23:11 ` [PATCH v6 32/34] cifs: DIO to/from KVEC-type iterators should now work David Howells
2023-01-16 23:12 ` [PATCH v6 33/34] net: [RFC][WIP] Mark each skb_frags as to how they should be cleaned up David Howells
2023-01-16 23:12 ` [PATCH v6 34/34] net: [RFC][WIP] Make __zerocopy_sg_from_iter() correctly pin or leave pages unref'd David Howells
2023-01-17 7:46 ` [PATCH v6 00/34] iov_iter: Improve page extraction (ref, pin or just list) Christoph Hellwig
2023-01-18 14:00 ` [PATCH v6 09/34] bio: Rename BIO_NO_PAGE_REF to BIO_PAGE_REFFED and invert the meaning David Howells
2023-01-18 14:09 ` Christoph Hellwig
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=167391047703.2311931.8115712773222260073.stgit@warthog.procyon.org.uk \
--to=dhowells@redhat.com \
--cc=anna@kernel.org \
--cc=asmadeus@codewreck.org \
--cc=axboe@kernel.dk \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=ericvh@gmail.com \
--cc=hch@infradead.org \
--cc=hch@lst.de \
--cc=herbert@gondor.apana.org.au \
--cc=jack@suse.cz \
--cc=jejb@linux.ibm.com \
--cc=jhubbard@nvidia.com \
--cc=jlayton@kernel.org \
--cc=kuba@kernel.org \
--cc=linkinjeon@kernel.org \
--cc=linux-block@vger.kernel.org \
--cc=linux-cachefs@redhat.com \
--cc=linux-cifs@vger.kernel.org \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-nfs@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=linux_oss@crudebyte.com \
--cc=logang@deltatee.com \
--cc=longli@microsoft.com \
--cc=lucho@ionkov.net \
--cc=martin.petersen@oracle.com \
--cc=metze@samba.org \
--cc=miklos@szeredi.hu \
--cc=netdev@vger.kernel.org \
--cc=nspmangalore@gmail.com \
--cc=pabeni@redhat.com \
--cc=pc@cjr.nz \
--cc=rohiths.msft@gmail.com \
--cc=sfrench@samba.org \
--cc=smfrench@gmail.com \
--cc=tom@talpey.com \
--cc=trond.myklebust@hammerspace.com \
--cc=v9fs-developer@lists.sourceforge.net \
--cc=viro@zeniv.linux.org.uk \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.