NFS: Replace various occurrences of kstrndup() with kmemdup_nul()

When we already know the string length, it is more efficient to
use kmemdup_nul().

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
[Anna - Changes to super.c were already made during fscontext conversion]
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c
index aec769a..89bd558 100644 (file)
--- a/fs/nfs/dns_resolve.c
+++ b/fs/nfs/dns_resolve.c
@@ -93,7 +93,7 @@ static void nfs_dns_ent_init(struct cache_head *cnew,
        key = container_of(ckey, struct nfs_dns_ent, h);
 
        kfree(new->hostname);
-       new->hostname = kstrndup(key->hostname, key->namelen, GFP_KERNEL);
+       new->hostname = kmemdup_nul(key->hostname, key->namelen, GFP_KERNEL);
        if (new->hostname) {
                new->namelen = key->namelen;
                nfs_dns_ent_update(cnew, ckey);

diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 3ea1c10..84026e7 100644 (file)
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -501,7 +501,7 @@ static int nfs4_try_replacing_one_location(struct nfs_server *server,
                rpc_set_port(sap, NFS_PORT);
 
                error = -ENOMEM;
-               hostname = kstrndup(buf->data, buf->len, GFP_KERNEL);
+               hostname = kmemdup_nul(buf->data, buf->len, GFP_KERNEL);
                if (hostname == NULL)
                        break;