This patch series follows up on the RFC and subsequent review comments at https://patchwork.ozlabs.org/cover/862248/
Review comments addressed are - drop MSG_PEEK change for sk_error_queue - (patch4) batch of SO_EE_ORIGIN_MAX_ZCOOKIES (#defined to 8) is sent up as part of the data in the error notification. The ancillary data in with this notification specifies the number of cookies in ee_data, with the ee_origin is set to SO_EE_ORIGIN_ZCOOKIE - (patch4, patch5) allocate the skb to be used for error notification up-front (in rds_sendmsg()) so that we never have to fail due to skb allocation failure in the callback routine. - other minor review fixes around refactoring code for the setsockopt of ZEROCOPY, use iov_iter_npages() etc. This patch series also updates the selftests/net/msg_zerocopy.c to support PF_RDS sockets (both with and without zerocopy) Thanks to Willem de Bruijn and Eric Dumazet for review comments. Sowmini Varadhan (7): skbuff: export mm_[un]account_pinned_pages for other modules rds: hold a sock ref from rds_message to the rds_sock sock: permit SO_ZEROCOPY on PF_RDS socket rds: support for zcopy completion notification rds: zerocopy Tx support. selftests/net: add support for PF_RDS sockets selftests/net: add zerocopy support for PF_RDS test case include/linux/skbuff.h | 3 + include/uapi/linux/errqueue.h | 2 + include/uapi/linux/rds.h | 1 + net/core/skbuff.c | 6 +- net/core/sock.c | 25 ++-- net/rds/af_rds.c | 7 + net/rds/message.c | 148 ++++++++++++++++++++++- net/rds/rds.h | 23 ++++- net/rds/recv.c | 2 + net/rds/send.c | 51 ++++++-- tools/testing/selftests/net/msg_zerocopy.c | 182 +++++++++++++++++++++++----- 11 files changed, 390 insertions(+), 60 deletions(-)
