Add the setlease file_operation to erofs_file_fops and erofs_dir_fops,
pointing to generic_setlease.  A future patch will change the default
behavior to reject lease attempts with -EINVAL when there is no
setlease file operation defined. Add generic_setlease to retain the
ability to set leases on this filesystem.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/erofs/data.c | 2 ++
 fs/erofs/dir.c  | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/fs/erofs/data.c b/fs/erofs/data.c
index bb13c4cb845563492a616fc000910112b92df555..e2941b4715616528ddede2dbb9c0744db5d11be5 100644
--- a/fs/erofs/data.c
+++ b/fs/erofs/data.c
@@ -5,6 +5,7 @@
  * Copyright (C) 2021, Alibaba Cloud
  */
 #include "internal.h"
+#include <linux/filelock.h>
 #include <linux/sched/mm.h>
 #include <trace/events/erofs.h>
 
@@ -483,4 +484,5 @@ const struct file_operations erofs_file_fops = {
 	.mmap_prepare	= erofs_file_mmap_prepare,
 	.get_unmapped_area = thp_get_unmapped_area,
 	.splice_read	= filemap_splice_read,
+	.setlease	= generic_setlease,
 };
diff --git a/fs/erofs/dir.c b/fs/erofs/dir.c
index 32b4f5aa60c986dc2acf209960ff6df4077c7aa1..e5132575b9d3ef958a8acbe80bd0d2ddbd865135 100644
--- a/fs/erofs/dir.c
+++ b/fs/erofs/dir.c
@@ -5,6 +5,7 @@
  * Copyright (C) 2022, Alibaba Cloud
  */
 #include "internal.h"
+#include <linux/filelock.h>
 
 static int erofs_fill_dentries(struct inode *dir, struct dir_context *ctx,
 			       void *dentry_blk, struct erofs_dirent *de,
@@ -127,4 +128,5 @@ const struct file_operations erofs_dir_fops = {
 #ifdef CONFIG_COMPAT
 	.compat_ioctl   = erofs_compat_ioctl,
 #endif
+	.setlease	= generic_setlease,
 };

-- 
2.52.0