diff options
| author | Jeff Layton <jlayton@primarydata.com> | 2015-06-08 12:11:10 -0700 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2015-08-10 16:05:44 -0400 |
| commit | 1b6dc1dffbb142de60eb65f6155276ac31ff5474 (patch) | |
| tree | 8bb76e3d6a7b1d1e8de1459c042a1a0734d15798 /net/sunrpc/svc.c | |
| parent | d70bc0c67c7aaf0d00084b2f91b44fe1a8ae4e15 (diff) | |
| download | linux-1b6dc1dffbb142de60eb65f6155276ac31ff5474.tar.bz2 | |
nfsd/sunrpc: factor svc_rqst allocation and freeing from sv_nrthreads refcounting
In later patches, we'll want to be able to allocate and free svc_rqst
structures without monkeying with the serv->sv_nrthreads refcount.
Factor those pieces out of their respective functions.
Signed-off-by: Shirley Ma <shirley.ma@oracle.com>
Acked-by: Jeff Layton <jlayton@primarydata.com>
Tested-by: Shirley Ma <shirley.ma@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc/svc.c')
| -rw-r--r-- | net/sunrpc/svc.c | 54 |
1 files changed, 36 insertions, 18 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index 486c14bf4e49..a8f579df14d8 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -583,40 +583,52 @@ svc_release_buffer(struct svc_rqst *rqstp) } struct svc_rqst * -svc_prepare_thread(struct svc_serv *serv, struct svc_pool *pool, int node) +svc_rqst_alloc(struct svc_serv *serv, struct svc_pool *pool, int node) { struct svc_rqst *rqstp; rqstp = kzalloc_node(sizeof(*rqstp), GFP_KERNEL, node); if (!rqstp) - goto out_enomem; + return rqstp; - serv->sv_nrthreads++; __set_bit(RQ_BUSY, &rqstp->rq_flags); spin_lock_init(&rqstp->rq_lock); rqstp->rq_server = serv; rqstp->rq_pool = pool; - spin_lock_bh(&pool->sp_lock); - pool->sp_nrthreads++; - list_add_rcu(&rqstp->rq_all, &pool->sp_all_threads); - spin_unlock_bh(&pool->sp_lock); rqstp->rq_argp = kmalloc_node(serv->sv_xdrsize, GFP_KERNEL, node); if (!rqstp->rq_argp) - goto out_thread; + goto out_enomem; rqstp->rq_resp = kmalloc_node(serv->sv_xdrsize, GFP_KERNEL, node); if (!rqstp->rq_resp) - goto out_thread; + goto out_enomem; if (!svc_init_buffer(rqstp, serv->sv_max_mesg, node)) - goto out_thread; + goto out_enomem; return rqstp; -out_thread: - svc_exit_thread(rqstp); out_enomem: - return ERR_PTR(-ENOMEM); + svc_rqst_free(rqstp); + return NULL; +} +EXPORT_SYMBOL_GPL(svc_rqst_alloc); + +struct svc_rqst * +svc_prepare_thread(struct svc_serv *serv, struct svc_pool *pool, int node) +{ + struct svc_rqst *rqstp; + + rqstp = svc_rqst_alloc(serv, pool, node); + if (!rqstp) + return ERR_PTR(-ENOMEM); + + serv->sv_nrthreads++; + spin_lock_bh(&pool->sp_lock); + pool->sp_nrthreads++; + list_add_rcu(&rqstp->rq_all, &pool->sp_all_threads); + spin_unlock_bh(&pool->sp_lock); + return rqstp; } EXPORT_SYMBOL_GPL(svc_prepare_thread); @@ -751,15 +763,21 @@ EXPORT_SYMBOL_GPL(svc_set_num_threads); * mutex" for the service. */ void -svc_exit_thread(struct svc_rqst *rqstp) +svc_rqst_free(struct svc_rqst *rqstp) { - struct svc_serv *serv = rqstp->rq_server; - struct svc_pool *pool = rqstp->rq_pool; - svc_release_buffer(rqstp); kfree(rqstp->rq_resp); kfree(rqstp->rq_argp); kfree(rqstp->rq_auth_data); + kfree_rcu(rqstp, rq_rcu_head); +} +EXPORT_SYMBOL_GPL(svc_rqst_free); + +void +svc_exit_thread(struct svc_rqst *rqstp) +{ + struct svc_serv *serv = rqstp->rq_server; + struct svc_pool *pool = rqstp->rq_pool; spin_lock_bh(&pool->sp_lock); pool->sp_nrthreads--; @@ -767,7 +785,7 @@ svc_exit_thread(struct svc_rqst *rqstp) list_del_rcu(&rqstp->rq_all); spin_unlock_bh(&pool->sp_lock); - kfree_rcu(rqstp, rq_rcu_head); + svc_rqst_free(rqstp); /* Release the server */ if (serv) |