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Date: Wed, 10 Dec 2014 14:07:48 -0500
From: Jeff Layton <jlayton@...marydata.com>
To: bfields@...ldses.org
Cc: linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org,
Tejun Heo <tj@...nel.org>, Al Viro <viro@...iv.linux.org.uk>,
NeilBrown <neilb@...e.de>
Subject: [PATCH v2 04/16] 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: Jeff Layton <jlayton@...marydata.com>
---
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 d93a8d0a04bb..b6bdba25d4fb 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -327,7 +327,8 @@ 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 ace6c70f807b..1800a918f244 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -307,6 +307,7 @@ 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 94e7e173aa10..5904c06cfd32 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -390,10 +390,11 @@ 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)
@@ -410,7 +411,7 @@ 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 377be73b736f..7429cdcb48b5 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 c69358b3cf7f..4954339315b7 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
@@ -226,12 +225,12 @@ 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);
}
@@ -321,7 +320,7 @@ 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;
@@ -403,6 +402,7 @@ 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
@@ -413,7 +413,7 @@ 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);
--
2.1.0
--
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