| Message ID | 1556239470-26908-3-git-send-email-santosh.shilimkar@oracle.com |
|---|---|
| State | Changes Requested |
| Delegated to: | David Miller |
| Headers | show |
| Series | rds: handle unsupported rdma request to fs dax memory | expand |
On 2019/4/26 8:44, Santosh Shilimkar wrote: > RDS doesn't support RDMA on memory apertures that require On Demand > Paging (ODP), such as FS DAX memory. A sysctl is added to indicate > whether RDMA requiring ODP is supported. > > Reviewed-by: Håkon Bugge <haakon.bugge@oracle.com> > Reviewed-tested-by: Zhu Yanjun <yanjun.zhu@oracle.com> Thanks, Santosh Zhu Yanjun > Signed-off-by: Hans Westgaard Ry <hans.westgaard.ry@oracle.com> > Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> > --- > net/rds/ib.h | 1 + > net/rds/ib_sysctl.c | 8 ++++++++ > 2 files changed, 9 insertions(+) > > diff --git a/net/rds/ib.h b/net/rds/ib.h > index 67a715b..80e11ef 100644 > --- a/net/rds/ib.h > +++ b/net/rds/ib.h > @@ -457,5 +457,6 @@ unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter, > extern unsigned long rds_ib_sysctl_max_unsig_bytes; > extern unsigned long rds_ib_sysctl_max_recv_allocation; > extern unsigned int rds_ib_sysctl_flow_control; > +extern unsigned int rds_ib_sysctl_odp_support; > > #endif > diff --git a/net/rds/ib_sysctl.c b/net/rds/ib_sysctl.c > index e4e41b3..7cc02cd 100644 > --- a/net/rds/ib_sysctl.c > +++ b/net/rds/ib_sysctl.c > @@ -60,6 +60,7 @@ > * will cause credits to be added before protocol negotiation. > */ > unsigned int rds_ib_sysctl_flow_control = 0; > +unsigned int rds_ib_sysctl_odp_support; > > static struct ctl_table rds_ib_sysctl_table[] = { > { > @@ -103,6 +104,13 @@ > .mode = 0644, > .proc_handler = proc_dointvec, > }, > + { > + .procname = "odp_support", > + .data = &rds_ib_sysctl_odp_support, > + .maxlen = sizeof(rds_ib_sysctl_odp_support), > + .mode = 0444, > + .proc_handler = proc_dointvec, > + }, > { } > }; >
diff --git a/net/rds/ib.h b/net/rds/ib.h index 67a715b..80e11ef 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -457,5 +457,6 @@ unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter, extern unsigned long rds_ib_sysctl_max_unsig_bytes; extern unsigned long rds_ib_sysctl_max_recv_allocation; extern unsigned int rds_ib_sysctl_flow_control; +extern unsigned int rds_ib_sysctl_odp_support; #endif diff --git a/net/rds/ib_sysctl.c b/net/rds/ib_sysctl.c index e4e41b3..7cc02cd 100644 --- a/net/rds/ib_sysctl.c +++ b/net/rds/ib_sysctl.c @@ -60,6 +60,7 @@ * will cause credits to be added before protocol negotiation. */ unsigned int rds_ib_sysctl_flow_control = 0; +unsigned int rds_ib_sysctl_odp_support; static struct ctl_table rds_ib_sysctl_table[] = { { @@ -103,6 +104,13 @@ .mode = 0644, .proc_handler = proc_dointvec, }, + { + .procname = "odp_support", + .data = &rds_ib_sysctl_odp_support, + .maxlen = sizeof(rds_ib_sysctl_odp_support), + .mode = 0444, + .proc_handler = proc_dointvec, + }, { } };