RE: [Patch v3 00/16] CIFS: add support for direct I/O
> 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
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 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
[Patch v3 00/16] CIFS: add support for direct I/O
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
