diff options
| author | Olga Kornievskaia <okorniev@redhat.com> | 2025-11-04 17:29:26 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2025-11-23 15:30:12 -0500 |
| commit | 6f8b26c90a4d645fd5c944c41a6f0fd61ec27c50 (patch) | |
| tree | 88e522211066d63240fd0f670a739c6d0138da04 | |
| parent | 441244d4273a8037b265fd254dfdaca5fa736ee2 (diff) | |
SUNRPC: new helper function for stopping backchannel server
Create a new backchannel function to stop the backchannel server
and clear the bc_serv in transport protected under the bc_pa_lock.
Signed-off-by: Olga Kornievskaia <okorniev@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
| -rw-r--r-- | include/linux/sunrpc/bc_xprt.h | 6 | ||||
| -rw-r--r-- | net/sunrpc/backchannel_rqst.c | 16 |
2 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h index 178f34ad8db6..98939cb664cf 100644 --- a/include/linux/sunrpc/bc_xprt.h +++ b/include/linux/sunrpc/bc_xprt.h @@ -32,6 +32,7 @@ int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs); void xprt_destroy_bc(struct rpc_xprt *xprt, unsigned int max_reqs); void xprt_free_bc_rqst(struct rpc_rqst *req); unsigned int xprt_bc_max_slots(struct rpc_xprt *xprt); +void xprt_svc_destroy_nullify_bc(struct rpc_xprt *xprt, struct svc_serv **serv); /* * Determine if a shared backchannel is in use @@ -69,5 +70,10 @@ static inline void set_bc_enabled(struct svc_serv *serv) static inline void xprt_free_bc_request(struct rpc_rqst *req) { } + +static inline void xprt_svc_destroy_nullify_bc(struct rpc_xprt *xprt, struct svc_serv **serv) +{ + svc_destroy(serv); +} #endif /* CONFIG_SUNRPC_BACKCHANNEL */ #endif /* _LINUX_SUNRPC_BC_XPRT_H */ diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c index efddea0f4b8b..68b1fcdea8f0 100644 --- a/net/sunrpc/backchannel_rqst.c +++ b/net/sunrpc/backchannel_rqst.c @@ -25,6 +25,22 @@ unsigned int xprt_bc_max_slots(struct rpc_xprt *xprt) } /* + * Helper function to nullify backchannel server pointer in transport. + * We need to synchronize setting the pointer to NULL (done so after + * the backchannel server is shutdown) with the usage of that pointer + * by the backchannel request processing routines + * xprt_complete_bc_request() and rpcrdma_bc_receive_call(). + */ +void xprt_svc_destroy_nullify_bc(struct rpc_xprt *xprt, struct svc_serv **serv) +{ + spin_lock(&xprt->bc_pa_lock); + svc_destroy(serv); + xprt->bc_serv = NULL; + spin_unlock(&xprt->bc_pa_lock); +} +EXPORT_SYMBOL_GPL(xprt_svc_destroy_nullify_bc); + +/* * Helper routines that track the number of preallocation elements * on the transport. */ |