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>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 2d18eac..7f60beb 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2085,7 +2085,7 @@
}
static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
- struct qstr *path, struct iattr *sattr)
+ struct page *page, unsigned int len, struct iattr *sattr)
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_fh fhandle;
@@ -2111,10 +2111,11 @@
};
int status;
- if (path->len > NFS4_MAXPATHLEN)
+ if (len > NFS4_MAXPATHLEN)
return -ENAMETOOLONG;
- arg.u.symlink = path;
+ arg.u.symlink.pages = &page;
+ arg.u.symlink.len = len;
nfs_fattr_init(&fattr);
nfs_fattr_init(&dir_fattr);
@@ -2128,13 +2129,14 @@
}
static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
- struct qstr *path, struct iattr *sattr)
+ struct page *page, unsigned int len, struct iattr *sattr)
{
struct nfs4_exception exception = { };
int err;
do {
err = nfs4_handle_exception(NFS_SERVER(dir),
- _nfs4_proc_symlink(dir, dentry, path, sattr),
+ _nfs4_proc_symlink(dir, dentry, page,
+ len, sattr),
&exception);
} while (exception.retry);
return err;