Chuck Lever 8cc0e63ba8 Revert "SUNRPC: Use RMW bitops in single-threaded hot paths" ...

commit 7827c81f0248e3c2f40d438b020f3d222f002171 upstream.

The premise that "Once an svc thread is scheduled and executing an
RPC, no other processes will touch svc_rqst::rq_flags" is false.
svc_xprt_enqueue() examines the RQ_BUSY flag in scheduled nfsd
threads when determining which thread to wake up next.

Found via KCSAN.

Fixes: 28df0988815f ("SUNRPC: Use RMW bitops in single-threaded hot paths")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2023-01-14 10:33:42 +01:00

..

backchannel.c

xprtrdma: Clean up synopsis of rpcrdma_req_create()

2022-10-05 15:47:16 -04:00

frwr_ops.c

xprtrdma: Fix uninitialized variable

2022-10-05 15:47:17 -04:00

Makefile

svcrdma: Add a "parsed chunk list" data structure

2020-11-30 13:00:22 -05:00

module.c

SUNRPC: xprt_load_transport() needs to support the netid "rdma6"

2020-12-02 14:05:52 -05:00

rpc_rdma.c

xprtrdma: treat all calls not a bcall when bc_serv is NULL

2022-05-31 17:09:30 -04:00

svc_rdma_backchannel.c

svcrdma: Clean up RPCRDMA_DEF_GFP

2022-10-05 15:47:16 -04:00

svc_rdma_pcl.c

svcrdma: Add a "parsed chunk list" data structure

2020-11-30 13:00:22 -05:00

svc_rdma_recvfrom.c

SUNRPC: Remove svc_rqst::rq_xprt_hlen

2022-05-19 12:25:39 -04:00

svc_rdma_rw.c

SUNRPC: Trap RDMA segment overflows

2022-06-02 13:05:58 -04:00

svc_rdma_sendto.c

svcrdma: Split the svcrdma_wc_send() tracepoint

2021-10-04 15:40:15 -04:00

svc_rdma_transport.c

Revert "SUNRPC: Use RMW bitops in single-threaded hot paths"

2023-01-14 10:33:42 +01:00

svc_rdma.c

svcrdma: Deprecate stat variables that are no longer used

2021-01-25 09:36:28 -05:00

transport.c

SUNRPC: Replace the use of the xprtiod WQ in rpcrdma

2022-10-05 15:47:16 -04:00

verbs.c

xprtrdma: Fix regbuf data not freed in rpcrdma_req_create()

2022-12-31 13:32:23 +01:00

xprt_rdma.h

xprtrdma: MR-related memory allocation should be allowed to fail

2022-10-05 15:47:16 -04:00