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authorTrond Myklebust <trond.myklebust@primarydata.com>2016-08-30 03:03:52 +0300
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2016-09-19 20:08:36 +0300
commit5405fc44c3377358205ab4095fe9c44716aa0900 (patch)
tree0cc85d03b5503ee017f84318c9c32a86fd6e6fc1 /fs/nfs/callback.c
parentbb6aeba736ba9fd4d9569eec4bc3f7aecb42162a (diff)
downloadlinux-5405fc44c3377358205ab4095fe9c44716aa0900.tar.xz
NFSv4.x: Add kernel parameter to control the callback server
Add support for the kernel parameter nfs.callback_nr_threads to set the number of threads that will be assigned to the callback channel. Add support for the kernel parameter nfs.nfs.max_session_cb_slots to set the maximum size of the callback channel slot table. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/callback.c')
-rw-r--r--fs/nfs/callback.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index b91c49f4670b..532d8e242d4d 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -148,11 +148,14 @@ static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt,
static int nfs_callback_start_svc(int minorversion, struct rpc_xprt *xprt,
struct svc_serv *serv)
{
- const int nrservs = NFS4_NR_CALLBACK_THREADS;
+ int nrservs = nfs_callback_nr_threads;
int ret;
nfs_callback_bc_serv(minorversion, xprt, serv);
+ if (nrservs < NFS4_MIN_NR_CALLBACK_THREADS)
+ nrservs = NFS4_MIN_NR_CALLBACK_THREADS;
+
if (serv->sv_nrthreads-1 == nrservs)
return 0;