linux-kernel - [PATCH 0/7] cifs: Use iov_iters down to the network transport

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Message-ID: <165348876794.2106726.9240233279581920208.stgit@warthog.procyon.org.uk>
Date:   Wed, 25 May 2022 15:26:08 +0100
From:   David Howells <dhowells@...hat.com>
To:     Steve French <smfrench@...il.com>
Cc:     linux-cifs@...r.kernel.org,
        Rohith Surabattula <rohiths.msft@...il.com>,
        Shyam Prasad N <nspmangalore@...il.com>,
        Steve French <sfrench@...ba.org>, dhowells@...hat.com,
        Shyam Prasad N <nspmangalore@...il.com>,
        Rohith Surabattula <rohiths.msft@...il.com>,
        Jeff Layton <jlayton@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>, linux-cifs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/7] cifs: Use iov_iters down to the network transport


Hi Steve,

Here's a second version of a subset of my cifs-experimental branch.  It alters
the cifs driver to pass iov_iters down to the lowest layers where they can be
passed to the network transport.

I've fixed the RDMA code to work, fixed a few more bugs and addressed most of
checkpatch moans.  Note that there's a bunch of stuff #if'd out in patch 5
that get removed in patch 6 - otherwise diff produces an awful mess.

There's also a couple of changes in patch 7 from Namjae Jeon to make
soft-iWarp work.  Feel free to discard that patch if you get a better version
from him.

I've pushed the patches here also:

	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=cifs-for-sfrench

David
---
David Howells (6):
      iov_iter: Add a function to extract an iter's buffers to a bvec iter
      iov_iter: Add a general purpose iteration function
      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: Remove unused code

Namjae Jeon (1):
      cifs, ksmbd: Fix MAX_SGE count for softiwarp


 fs/cifs/cifsencrypt.c     |   40 +-
 fs/cifs/cifsfs.h          |    3 +
 fs/cifs/cifsglob.h        |   29 +-
 fs/cifs/cifsproto.h       |   11 +-
 fs/cifs/cifssmb.c         |  253 +++++---
 fs/cifs/connect.c         |   16 +
 fs/cifs/file.c            | 1269 ++++++++++++-------------------------
 fs/cifs/fscache.c         |   22 +-
 fs/cifs/fscache.h         |   10 +-
 fs/cifs/misc.c            |  109 ----
 fs/cifs/smb2ops.c         |  367 ++++++-----
 fs/cifs/smb2pdu.c         |   35 +-
 fs/cifs/smbdirect.c       |  317 ++++-----
 fs/cifs/smbdirect.h       |    6 +-
 fs/cifs/transport.c       |   37 +-
 fs/ksmbd/transport_rdma.c |    2 +-
 include/linux/uio.h       |    8 +
 lib/iov_iter.c            |  133 ++++
 18 files changed, 1124 insertions(+), 1543 deletions(-)