[PATCH] VFS: Permit filesystem to override root dentry on mount

[mirror_ubuntu-zesty-kernel.git] / fs / nfsd / nfsctl.c

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index a0871b3efeb7e35f1c80608ec3dd871d9e663d3f..a1810e6a93e562fe9f5bbf3ed44086bddbf151c4 100644 (file)
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -105,7 +105,7 @@ static ssize_t nfsctl_transaction_write(struct file *file, const char __user *bu
        char *data;
        ssize_t rv;
 
-       if (ino >= sizeof(write_op)/sizeof(write_op[0]) || !write_op[ino])
+       if (ino >= ARRAY_SIZE(write_op) || !write_op[ino])
                return -EINVAL;
 
        data = simple_transaction_get(file, buf, size);
@@ -134,7 +134,7 @@ static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size
        return simple_transaction_read(file, buf, size, pos);
 }
 
-static struct file_operations transaction_ops = {
+static const struct file_operations transaction_ops = {
        .write          = nfsctl_transaction_write,
        .read           = nfsctl_transaction_read,
        .release        = simple_transaction_release,
@@ -146,7 +146,7 @@ static int exports_open(struct inode *inode, struct file *file)
        return seq_open(file, &nfs_exports_op);
 }
 
-static struct file_operations exports_operations = {
+static const struct file_operations exports_operations = {
        .open           = exports_open,
        .read           = seq_read,
        .llseek         = seq_lseek,
@@ -494,10 +494,10 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
        return simple_fill_super(sb, 0x6e667364, nfsd_files);
 }
 
-static struct super_block *nfsd_get_sb(struct file_system_type *fs_type,
-       int flags, const char *dev_name, void *data)
+static int nfsd_get_sb(struct file_system_type *fs_type,
+       int flags, const char *dev_name, void *data, struct vfsmount *mnt)
 {
-       return get_sb_single(fs_type, flags, data, nfsd_fill_super);
+       return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt);
 }
 
 static struct file_system_type nfsd_fs_type = {