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NFS: Add a mount option to specify number of TCP connections to use

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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>
This commit is contained in:
Trond Myklebust 2017-04-26 23:30:48 -04:00 committed by Trond Myklebust
parent 612b41f808
commit 28cc5cd8c6
2 changed files with 11 additions and 0 deletions
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1
fs/nfs/internal.h
View file

@ -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;

10
fs/nfs/super.c
View file

@ -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)