From: Long Li <longli@linuxonhyperv.com>
To: Steve French <sfrench@samba.org>,
linux-cifs@vger.kernel.org, samba-technical@lists.samba.org,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org
Cc: Long Li <longli@microsoft.com>
Subject: [Patch v2 00/15] CIFS: Add direct I/O support
Date: Wed, 30 May 2018 12:47:52 -0700 [thread overview]
Message-ID: <20180530194807.31657-1-longli@linuxonhyperv.com> (raw)
From: Long Li <longli@microsoft.com>
This patch set implements direct I/O.
In normal code path (even with cache=none), CIFS copies I/O data from
user-space to kernel-space for security reasons of possible protocol
required signing and encryption on user data.
With this patch set, CIFS passes the I/O data directly from user-space
buffer to the transport layer, when file system is mounted with
"cache-none".
Patch v2 addressed comments from Christoph Hellwig <hch@lst.de> and
Tom Talpey <ttalpey@microsoft.com> to implement direct I/O for both
socket and RDMA.
Long Li (15):
CIFS: Introduce offset for the 1st page in data transfer structures
CIFS: Add support for direct pages in rdata
CIFS: Use offset when reading pages
CIFS: Add support for direct pages in wdata
CIFS: Calculate the correct request length based on page offset and
tail size
CIFS: Introduce helper function to get page offset and length in
smb_rqst
CIFS: When sending data on socket, pass the correct page offset
CIFS: SMBD: Support page offset in RDMA send
CIFS: SMBD: Support page offset in RDMA recv
CIFS: SMBD: Support page offset in memory registration
CIFS: Pass page offset for calculating signature
CIFS: Pass page offset for encrypting
CIFS: Add support for direct I/O read
CIFS: Add support for direct I/O write
CIFS: Add direct I/O functions to file_operations
fs/cifs/cifsencrypt.c | 9 +-
fs/cifs/cifsfs.c | 5 +-
fs/cifs/cifsfs.h | 2 +
fs/cifs/cifsglob.h | 7 +-
fs/cifs/cifsproto.h | 9 +-
fs/cifs/cifssmb.c | 17 ++-
fs/cifs/connect.c | 5 +-
fs/cifs/file.c | 389 +++++++++++++++++++++++++++++++++++++++++++++++---
fs/cifs/misc.c | 17 +++
fs/cifs/smb2ops.c | 22 +--
fs/cifs/smb2pdu.c | 20 ++-
fs/cifs/smbdirect.c | 121 ++++++++++------
fs/cifs/smbdirect.h | 2 +-
fs/cifs/transport.c | 34 +++--
14 files changed, 554 insertions(+), 105 deletions(-)
--
2.7.4
next reply other threads:[~2018-05-30 19:47 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-30 19:47 Long Li [this message]
2018-05-30 19:47 ` [Patch v2 01/15] CIFS: Introduce offset for the 1st page in data transfer structures Long Li
2018-05-30 19:47 ` [Patch v2 02/15] CIFS: Add support for direct pages in rdata Long Li
2018-05-30 20:27 ` Ruhl, Michael J
2018-05-30 20:57 ` Long Li
2018-06-24 1:50 ` Tom Talpey
2018-06-25 20:25 ` Long Li
2018-06-25 21:01 ` Jason Gunthorpe
2018-06-26 15:13 ` Tom Talpey
2018-06-27 3:21 ` Long Li
2018-05-30 19:47 ` [Patch v2 03/15] CIFS: Use offset when reading pages Long Li
2018-06-24 1:58 ` Tom Talpey
2018-06-25 20:27 ` Long Li
2018-05-30 19:47 ` [Patch v2 04/15] CIFS: Add support for direct pages in wdata Long Li
2018-06-24 2:01 ` Tom Talpey
2018-06-25 20:34 ` Long Li
2018-05-30 19:47 ` [Patch v2 05/15] CIFS: Calculate the correct request length based on page offset and tail size Long Li
2018-06-24 2:07 ` Tom Talpey
2018-06-25 21:07 ` Long Li
2018-05-30 19:47 ` [Patch v2 06/15] CIFS: Introduce helper function to get page offset and length in smb_rqst Long Li
2018-06-24 2:09 ` Tom Talpey
2018-06-25 21:14 ` Long Li
2018-06-26 13:16 ` Tom Talpey
2018-06-27 3:24 ` Long Li
2018-05-30 19:47 ` [Patch v2 07/15] CIFS: When sending data on socket, pass the correct page offset Long Li
2018-05-30 19:48 ` [Patch v2 08/15] CIFS: SMBD: Support page offset in RDMA send Long Li
2018-06-24 2:11 ` Tom Talpey
2018-06-25 21:23 ` Long Li
2018-05-30 19:48 ` [Patch v2 09/15] CIFS: SMBD: Support page offset in RDMA recv Long Li
2018-06-24 2:16 ` Tom Talpey
2018-06-25 21:29 ` Long Li
2018-05-30 19:48 ` [Patch v2 10/15] CIFS: SMBD: Support page offset in memory registration Long Li
2018-06-24 2:24 ` Tom Talpey
2018-05-30 19:48 ` [Patch v2 11/15] CIFS: Pass page offset for calculating signature Long Li
2018-06-24 2:27 ` Tom Talpey
2018-06-26 4:15 ` Long Li
2018-05-30 19:48 ` [Patch v2 12/15] CIFS: Pass page offset for encrypting Long Li
2018-06-24 2:28 ` Tom Talpey
2018-05-30 19:48 ` [Patch v2 13/15] CIFS: Add support for direct I/O read Long Li
2018-06-02 5:51 ` kbuild test robot
2018-06-02 7:15 ` kbuild test robot
2018-06-24 2:39 ` Tom Talpey
2018-06-26 4:34 ` Long Li
2018-05-30 19:48 ` [Patch v2 14/15] CIFS: Add support for direct I/O write Long Li
2018-06-24 2:48 ` Tom Talpey
2018-06-26 4:39 ` Long Li
2018-06-26 13:29 ` Tom Talpey
2018-06-27 3:44 ` Long Li
2018-05-30 19:48 ` [Patch v2 15/15] CIFS: Add direct I/O functions to file_operations Long Li
2018-06-07 11:17 ` Pavel Shilovsky
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