linux-ext4 - [PATCH 17/24] overlayfs: add setlease file operation

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Message-Id: <20260108-setlease-6-20-v1-17-ea4dec9b67fa@kernel.org>
Date: Thu, 08 Jan 2026 12:13:12 -0500
From: Jeff Layton <jlayton@...nel.org>
To: Luis de Bethencourt <luisbg@...nel.org>, 
 Salah Triki <salah.triki@...il.com>, Nicolas Pitre <nico@...xnic.net>, 
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Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
 linux-btrfs@...r.kernel.org, linux-erofs@...ts.ozlabs.org, 
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 Jeff Layton <jlayton@...nel.org>
Subject: [PATCH 17/24] overlayfs: add setlease file operation

Add the setlease file_operation to ovl_file_operations and
ovl_dir_operations, 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@...nel.org>
---
 fs/overlayfs/file.c    | 2 ++
 fs/overlayfs/readdir.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index cbae894572348acb3ba6c2b6e7f84558379110c2..8269431ba3c66d49d2eea24c4ca63a3d2879580a 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -5,6 +5,7 @@
 
 #include <linux/cred.h>
 #include <linux/file.h>
+#include <linux/filelock.h>
 #include <linux/mount.h>
 #include <linux/xattr.h>
 #include <linux/uio.h>
@@ -647,4 +648,5 @@ const struct file_operations ovl_file_operations = {
 
 	.copy_file_range	= ovl_copy_file_range,
 	.remap_file_range	= ovl_remap_file_range,
+	.setlease		= generic_setlease,
 };
diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
index 160960bb0ad0b0cd219cb2d8e82d8bda08885af0..7fd415d7471ed58849710da9f8a414b2b7aca1b4 100644
--- a/fs/overlayfs/readdir.c
+++ b/fs/overlayfs/readdir.c
@@ -8,6 +8,7 @@
 #include <linux/slab.h>
 #include <linux/namei.h>
 #include <linux/file.h>
+#include <linux/filelock.h>
 #include <linux/xattr.h>
 #include <linux/rbtree.h>
 #include <linux/security.h>
@@ -1070,6 +1071,7 @@ const struct file_operations ovl_dir_operations = {
 	.llseek		= ovl_dir_llseek,
 	.fsync		= ovl_dir_fsync,
 	.release	= ovl_dir_release,
+	.setlease	= generic_setlease,
 };
 
 int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list)

-- 
2.52.0