NFS: Use cached page as buffer for NFS symlink requests

Now that we have a copy of the symlink path in the page cache, we can pass
a struct page down to the XDR routines instead of a string buffer.

Test plan:
Connectathon, all NFS versions.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 7 insertions, 7 deletions

diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 0b507bf0f330..630e50647bbb 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -425,8 +425,8 @@ nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 }
 
 static int
-nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct qstr *path,
-                 struct iattr *sattr)
+nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
+                 unsigned int len, struct iattr *sattr)
 {
         struct nfs_fh fhandle;
         struct nfs_fattr fattr;
@@ -434,8 +434,8 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct qstr *path,
                 .fromfh         = NFS_FH(dir),
                 .fromname       = dentry->d_name.name,
                 .fromlen        = dentry->d_name.len,
-                .topath         = path->name,
-                .tolen          = path->len,
+                .pages          = &page,
+                .pathlen        = len,
                 .sattr          = sattr
         };
         struct rpc_message msg = {
@@ -444,11 +444,11 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct qstr *path,
         };
         int                     status;
 
-        if (path->len > NFS2_MAXPATHLEN)
+        if (len > NFS2_MAXPATHLEN)
                 return -ENAMETOOLONG;
 
-        dprintk("NFS call  symlink %s -> %s\n", dentry->d_name.name,
-                        path->name);
+        dprintk("NFS call  symlink %s\n", dentry->d_name.name);
+
         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
         nfs_mark_for_revalidate(dir);