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authorTrond Myklebust <trond.myklebust@primarydata.com>2017-04-26 23:30:48 -0400
committerTrond Myklebust <trond.myklebust@hammerspace.com>2019-07-06 14:54:50 -0400
commit28cc5cd8c68f1cd2146d88c7a54cc3234ed4dabe (patch)
tree056f9ce9d7290351f02aed7b5a2ebcae3a89ff7b /fs/nfs
parent612b41f808a98a124b23d72229693c3181733291 (diff)
downloadlinux-stericsson-28cc5cd8c68f1cd2146d88c7a54cc3234ed4dabe.tar.gz
NFS: Add a mount option to specify number of TCP connections to use
Allow the user to specify that the client should use multiple connections to the server. For the moment, this functionality will be limited to TCP and to NFSv4.x (x>0). Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/internal.h1
-rw-r--r--fs/nfs/super.c10
2 files changed, 11 insertions, 0 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 498fab72f70b..bba09dace5d6 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -123,6 +123,7 @@ struct nfs_parsed_mount_data {
char *export_path;
int port;
unsigned short protocol;
+ unsigned short nconnect;
} nfs_server;
void *lsm_opts;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index f88ddac2dcdf..68ad0b8bcabd 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -77,6 +77,8 @@
#define NFS_DEFAULT_VERSION 2
#endif
+#define NFS_MAX_CONNECTIONS 16
+
enum {
/* Mount options that take no arguments */
Opt_soft, Opt_softerr, Opt_hard,
@@ -108,6 +110,7 @@ enum {
Opt_nfsvers,
Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
Opt_addr, Opt_mountaddr, Opt_clientaddr,
+ Opt_nconnect,
Opt_lookupcache,
Opt_fscache_uniq,
Opt_local_lock,
@@ -181,6 +184,8 @@ static const match_table_t nfs_mount_option_tokens = {
{ Opt_mounthost, "mounthost=%s" },
{ Opt_mountaddr, "mountaddr=%s" },
+ { Opt_nconnect, "nconnect=%s" },
+
{ Opt_lookupcache, "lookupcache=%s" },
{ Opt_fscache_uniq, "fsc=%s" },
{ Opt_local_lock, "local_lock=%s" },
@@ -1549,6 +1554,11 @@ static int nfs_parse_mount_options(char *raw,
if (mnt->mount_server.addrlen == 0)
goto out_invalid_address;
break;
+ case Opt_nconnect:
+ if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS))
+ goto out_invalid_value;
+ mnt->nfs_server.nconnect = option;
+ break;
case Opt_lookupcache:
string = match_strdup(args);
if (string == NULL)