From b9e13cdfac70e38ade17b53810a36968c5842339 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 8 Jun 2015 12:06:51 -0700 Subject: [PATCH] nfsd/sunrpc: turn enqueueing a svc_xprt into a svc_serv operation For now, all services use svc_xprt_do_enqueue, but once we add workqueue-based service support, we'll need to do something different. Signed-off-by: Shirley Ma Acked-by: Jeff Layton Tested-by: Shirley Ma Signed-off-by: J. Bruce Fields --- fs/lockd/svc.c | 3 ++- fs/nfs/callback.c | 1 + fs/nfsd/nfssvc.c | 11 ++++++----- include/linux/sunrpc/svc.h | 3 +++ include/linux/sunrpc/svc_xprt.h | 1 + net/sunrpc/svc_xprt.c | 10 +++++----- 6 files changed, 18 insertions(+), 11 deletions(-) diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 4182b2f925cd..530914b5c455 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -323,7 +323,8 @@ out_rqst: } static struct svc_serv_ops lockd_sv_ops = { - .svo_shutdown = svc_rpcb_cleanup, + .svo_shutdown = svc_rpcb_cleanup, + .svo_enqueue_xprt = svc_xprt_do_enqueue, }; static struct svc_serv *lockd_create_svc(void) diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 182792d115fc..2c4a0b565d28 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -309,6 +309,7 @@ err_bind: } static struct svc_serv_ops nfs_cb_sv_ops = { + .svo_enqueue_xprt = svc_xprt_do_enqueue, }; static struct svc_serv *nfs_callback_create_svc(int minorversion) diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index 17ceaad5f80a..d8b9b4cd37c6 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -391,10 +391,11 @@ static int nfsd_get_default_max_blksize(void) return ret; } -static struct svc_serv_ops nfsd_sv_ops = { - .svo_shutdown = nfsd_last_thread, - .svo_function = nfsd, - .svo_module = THIS_MODULE, +static struct svc_serv_ops nfsd_thread_sv_ops = { + .svo_shutdown = nfsd_last_thread, + .svo_function = nfsd, + .svo_enqueue_xprt = svc_xprt_do_enqueue, + .svo_module = THIS_MODULE, }; int nfsd_create_serv(struct net *net) @@ -411,7 +412,7 @@ int nfsd_create_serv(struct net *net) nfsd_max_blksize = nfsd_get_default_max_blksize(); nfsd_reset_versions(); nn->nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize, - &nfsd_sv_ops); + &nfsd_thread_sv_ops); if (nn->nfsd_serv == NULL) return -ENOMEM; diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 0150003d584b..97609d0f68f6 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -58,6 +58,9 @@ struct svc_serv_ops { /* function for service threads to run */ int (*svo_function)(void *); + /* queue up a transport for servicing */ + void (*svo_enqueue_xprt)(struct svc_xprt *); + /* optional module to count when adding threads (pooled svcs only) */ struct module *svo_module; }; diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index 79f6f8f3dc0a..78512cfe1fe6 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -116,6 +116,7 @@ void svc_xprt_init(struct net *, struct svc_xprt_class *, struct svc_xprt *, struct svc_serv *); int svc_create_xprt(struct svc_serv *, const char *, struct net *, const int, const unsigned short, int); +void svc_xprt_do_enqueue(struct svc_xprt *xprt); void svc_xprt_enqueue(struct svc_xprt *xprt); void svc_xprt_put(struct svc_xprt *xprt); void svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt); diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index 163ac45c3639..a6cbb2104667 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -24,7 +24,6 @@ static int svc_deferred_recv(struct svc_rqst *rqstp); static struct cache_deferred_req *svc_defer(struct cache_req *req); static void svc_age_temp_xprts(unsigned long closure); static void svc_delete_xprt(struct svc_xprt *xprt); -static void svc_xprt_do_enqueue(struct svc_xprt *xprt); /* apparently the "standard" is that clients close * idle connections after 5 minutes, servers after @@ -225,12 +224,12 @@ static void svc_xprt_received(struct svc_xprt *xprt) } /* As soon as we clear busy, the xprt could be closed and - * 'put', so we need a reference to call svc_xprt_do_enqueue with: + * 'put', so we need a reference to call svc_enqueue_xprt with: */ svc_xprt_get(xprt); smp_mb__before_atomic(); clear_bit(XPT_BUSY, &xprt->xpt_flags); - svc_xprt_do_enqueue(xprt); + xprt->xpt_server->sv_ops->svo_enqueue_xprt(xprt); svc_xprt_put(xprt); } @@ -320,7 +319,7 @@ static bool svc_xprt_has_something_to_do(struct svc_xprt *xprt) return false; } -static void svc_xprt_do_enqueue(struct svc_xprt *xprt) +void svc_xprt_do_enqueue(struct svc_xprt *xprt) { struct svc_pool *pool; struct svc_rqst *rqstp = NULL; @@ -402,6 +401,7 @@ redo_search: out: trace_svc_xprt_do_enqueue(xprt, rqstp); } +EXPORT_SYMBOL_GPL(svc_xprt_do_enqueue); /* * Queue up a transport with data pending. If there are idle nfsd @@ -412,7 +412,7 @@ void svc_xprt_enqueue(struct svc_xprt *xprt) { if (test_bit(XPT_BUSY, &xprt->xpt_flags)) return; - svc_xprt_do_enqueue(xprt); + xprt->xpt_server->sv_ops->svo_enqueue_xprt(xprt); } EXPORT_SYMBOL_GPL(svc_xprt_enqueue); -- 2.20.1