> From: Steve French
> Sent: Saturday, September 15, 2018 2:28 AM
> To: Long Li
> Cc: Steve French ; CIFS ;
> samba-technical ; LKML ker...@vger.kernel.org>; linux-r...@vger.kernel.org
> Subject: Re: [Patch v3 00/16] CIFS: add support for direct I/O
>
> could you rebase these, patch 1 was merged quite a while ago, and patch 2
> etc. doesn't apply cleanly
Sorry, I will rebase and resend.
On Fri, Sep 7, 2018 at 9:18 PM Long Li
> wrote:
> >
> > From: Long Li
> >
> > 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 and
> > Tom Talpey to implement direct I/O for both
> > socket and RDMA.
> >
> > Patch v3 added support for kernel AIO.
> >
> >
> > Long Li (16):
> > CIFS: Add support for direct pages in rdata
> > CIFS: Use offset when reading pages
> > CIFS: Add support for direct pages in wdata
> > CIFS: pass page offset when issuing SMB write
> > 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: Do not call ib_dereg_mr on invalidated memory registration
> > 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 | 10 +-
> > fs/cifs/cifsfs.h | 2 +
> > fs/cifs/cifsglob.h| 11 +-
> > fs/cifs/cifsproto.h | 9 +-
> > fs/cifs/cifssmb.c | 19 +-
> > fs/cifs/connect.c | 5 +-
> > fs/cifs/file.c| 477
> ++
> > fs/cifs/misc.c| 17 ++
> > fs/cifs/smb2ops.c | 22 ++-
> > fs/cifs/smb2pdu.c | 20 ++-
> > fs/cifs/smbdirect.c | 156 ++---
> > fs/cifs/smbdirect.h | 2 +-
> > fs/cifs/transport.c | 34 ++--
> > 14 files changed, 606 insertions(+), 187 deletions(-)
> >
> > --
> > 2.7.4
> >
>
>
> --
> Thanks,
>
> Steve
