On 6/23/23 6:44 AM, David Howells wrote:

Use sendmsg() with MSG_SPLICE_PAGES rather than sendpage.  This allows
multiple pages and multipage folios to be passed through.

TODO: iscsit_fe_sendpage_sg() should perhaps set up a bio_vec array for the
entire set of pages it's going to transfer plus two for the header and
trailer and page fragments to hold the header and trailer - and then call
sendmsg once for the entire message.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Lee Duncan <lduncan@suse.com>
cc: Chris Leech <cleech@redhat.com>
cc: Mike Christie <michael.christie@oracle.com>
cc: Maurizio Lombardi <redacted>
cc: "James E.J. Bottomley" <redacted>
cc: "Martin K. Petersen" <martin.petersen@oracle.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: Al Viro <viro@zeniv.linux.org.uk>
cc: open-iscsi@googlegroups.com
cc: linux-scsi@vger.kernel.org
cc: target-devel@vger.kernel.org
cc: netdev@vger.kernel.org
---

Notes:
    ver #2)
     - Wrap lines at 80.

 drivers/scsi/iscsi_tcp.c                 | 26 +++++++++---------------
 drivers/scsi/iscsi_tcp.h                 |  2 --
 drivers/target/iscsi/iscsi_target_util.c | 15 ++++++++------

When you send this again can you split it into 2 patches?

drivers/scsi/iscsi_tcp.* is one driver. It's similar to a NFS client and
it has a set of maintainers that you saw in the MAINTAINER file.

drivers/target/iscsi/iscsi_target_util.c is another driver which is similar
to a NFS server. Martin is the overall maintainer but it's a group effort
to review patches.

I've tested and reviewed the iscsi_tcp parts. You can add my:

Reviewed-by: Mike Christie <michael.christie@oracle.com>

For the iscsi_target_util.c part, I'm reviewing it now and hoping Maurizio
and/or Dimitry might review as well.

One question on the target part I had is about the TODO above. Is that
something you were going to do, or is it something you are asking the target
people to do?