Sowmini Varadhan 401910db4c rds: deliver zerocopy completion notification with data ... This commit is an optimization over commit 01883eda72 ("rds: support for zcopy completion notification") for PF_RDS sockets. RDS applications are predominantly request-response transactions, so it is more efficient to reduce the number of system calls and have zerocopy completion notification delivered as ancillary data on the POLLIN channel. Cookies are passed up as ancillary data (at level SOL_RDS) in a struct rds_zcopy_cookies when the returned value of recvmsg() is greater than, or equal to, 0. A max of RDS_MAX_ZCOOKIES may be passed with each message. This commit removes support for zerocopy completion notification on MSG_ERRQUEUE for PF_RDS sockets. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Acked-by: Willem de Bruijn <willemb@google.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-02-27 14:19:11 -05:00
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asm-generic	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
drm	drm/tegra: Changes for v4.16-rc1	2018-01-12 11:46:19 +10:00
linux	rds: deliver zerocopy completion notification with data	2018-02-27 14:19:11 -05:00
misc	ocxl: Add AFU interrupt support	2018-01-24 11:42:58 +11:00
mtd	License cleanup: add SPDX license identifier to uapi header files with a license	2017-11-02 11:20:11 +01:00
rdma	IB/uverbs: Use __aligned_u64 for uapi headers	2018-02-15 14:59:45 -07:00
scsi	License cleanup: add SPDX license identifier to uapi header files with a license	2017-11-02 11:20:11 +01:00
sound	Merge remote-tracking branches 'asoc/topic/fsl', 'asoc/topic/fsl-ssi', 'asoc/topic/fsl_asrc' and 'asoc/topic/hdac_hdmi' into asoc-next	2018-01-18 11:55:56 +00:00
video	License cleanup: add SPDX license identifier to uapi header files with a license	2017-11-02 11:20:11 +01:00
xen	License cleanup: add SPDX license identifier to uapi header files with a license	2017-11-02 11:20:11 +01:00