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-rw-r--r--fs/nfs/super.c57
1 files changed, 40 insertions, 17 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index f88ddac2dcdf..3683d2b1cc8e 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" },
@@ -582,7 +587,7 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
}
default:
if (showdefaults)
- seq_printf(m, ",mountaddr=unspecified");
+ seq_puts(m, ",mountaddr=unspecified");
}
if (nfss->mountd_version || showdefaults)
@@ -673,6 +678,8 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
seq_printf(m, ",proto=%s",
rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID));
rcu_read_unlock();
+ if (clp->cl_nconnect > 0)
+ seq_printf(m, ",nconnect=%u", clp->cl_nconnect);
if (version == 4) {
if (nfss->port != NFS_PORT)
seq_printf(m, ",port=%u", nfss->port);
@@ -690,29 +697,29 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
nfs_show_nfsv4_options(m, nfss, showdefaults);
if (nfss->options & NFS_OPTION_FSCACHE)
- seq_printf(m, ",fsc");
+ seq_puts(m, ",fsc");
if (nfss->options & NFS_OPTION_MIGRATION)
- seq_printf(m, ",migration");
+ seq_puts(m, ",migration");
if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG) {
if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONE)
- seq_printf(m, ",lookupcache=none");
+ seq_puts(m, ",lookupcache=none");
else
- seq_printf(m, ",lookupcache=pos");
+ seq_puts(m, ",lookupcache=pos");
}
local_flock = nfss->flags & NFS_MOUNT_LOCAL_FLOCK;
local_fcntl = nfss->flags & NFS_MOUNT_LOCAL_FCNTL;
if (!local_flock && !local_fcntl)
- seq_printf(m, ",local_lock=none");
+ seq_puts(m, ",local_lock=none");
else if (local_flock && local_fcntl)
- seq_printf(m, ",local_lock=all");
+ seq_puts(m, ",local_lock=all");
else if (local_flock)
- seq_printf(m, ",local_lock=flock");
+ seq_puts(m, ",local_lock=flock");
else
- seq_printf(m, ",local_lock=posix");
+ seq_puts(m, ",local_lock=posix");
}
/*
@@ -735,11 +742,21 @@ int nfs_show_options(struct seq_file *m, struct dentry *root)
EXPORT_SYMBOL_GPL(nfs_show_options);
#if IS_ENABLED(CONFIG_NFS_V4)
+static void show_lease(struct seq_file *m, struct nfs_server *server)
+{
+ struct nfs_client *clp = server->nfs_client;
+ unsigned long expire;
+
+ seq_printf(m, ",lease_time=%ld", clp->cl_lease_time / HZ);
+ expire = clp->cl_last_renewal + clp->cl_lease_time;
+ seq_printf(m, ",lease_expired=%ld",
+ time_after(expire, jiffies) ? 0 : (jiffies - expire) / HZ);
+}
#ifdef CONFIG_NFS_V4_1
static void show_sessions(struct seq_file *m, struct nfs_server *server)
{
if (nfs4_has_session(server->nfs_client))
- seq_printf(m, ",sessions");
+ seq_puts(m, ",sessions");
}
#else
static void show_sessions(struct seq_file *m, struct nfs_server *server) {}
@@ -816,7 +833,7 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
/*
* Display all mount option settings
*/
- seq_printf(m, "\n\topts:\t");
+ seq_puts(m, "\n\topts:\t");
seq_puts(m, sb_rdonly(root->d_sb) ? "ro" : "rw");
seq_puts(m, root->d_sb->s_flags & SB_SYNCHRONOUS ? ",sync" : "");
seq_puts(m, root->d_sb->s_flags & SB_NOATIME ? ",noatime" : "");
@@ -827,7 +844,7 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
show_implementation_id(m, nfss);
- seq_printf(m, "\n\tcaps:\t");
+ seq_puts(m, "\n\tcaps:\t");
seq_printf(m, "caps=0x%x", nfss->caps);
seq_printf(m, ",wtmult=%u", nfss->wtmult);
seq_printf(m, ",dtsize=%u", nfss->dtsize);
@@ -836,13 +853,14 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
#if IS_ENABLED(CONFIG_NFS_V4)
if (nfss->nfs_client->rpc_ops->version == 4) {
- seq_printf(m, "\n\tnfsv4:\t");
+ seq_puts(m, "\n\tnfsv4:\t");
seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]);
seq_printf(m, ",bm1=0x%x", nfss->attr_bitmask[1]);
seq_printf(m, ",bm2=0x%x", nfss->attr_bitmask[2]);
seq_printf(m, ",acl=0x%x", nfss->acl_bitmask);
show_sessions(m, nfss);
show_pnfs(m, nfss);
+ show_lease(m, nfss);
}
#endif
@@ -874,20 +892,20 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
preempt_enable();
}
- seq_printf(m, "\n\tevents:\t");
+ seq_puts(m, "\n\tevents:\t");
for (i = 0; i < __NFSIOS_COUNTSMAX; i++)
seq_printf(m, "%lu ", totals.events[i]);
- seq_printf(m, "\n\tbytes:\t");
+ seq_puts(m, "\n\tbytes:\t");
for (i = 0; i < __NFSIOS_BYTESMAX; i++)
seq_printf(m, "%Lu ", totals.bytes[i]);
#ifdef CONFIG_NFS_FSCACHE
if (nfss->options & NFS_OPTION_FSCACHE) {
- seq_printf(m, "\n\tfsc:\t");
+ seq_puts(m, "\n\tfsc:\t");
for (i = 0; i < __NFSIOS_FSCACHEMAX; i++)
seq_printf(m, "%Lu ", totals.fscache[i]);
}
#endif
- seq_printf(m, "\n");
+ seq_putc(m, '\n');
rpc_clnt_show_stats(m, nfss->client);
@@ -1549,6 +1567,11 @@ 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)
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