linux-kernel - [PATCH 18/24] squashfs: add setlease file operation

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Message-Id: <20260108-setlease-6-20-v1-18-ea4dec9b67fa@kernel.org>
Date: Thu, 08 Jan 2026 12:13:13 -0500
From: Jeff Layton <jlayton@...nel.org>
To: Luis de Bethencourt <luisbg@...nel.org>, 
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Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
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 Jeff Layton <jlayton@...nel.org>
Subject: [PATCH 18/24] squashfs: add setlease file operation

Add the setlease file_operation pointing to generic_setlease to the
squashfs file_operations structures. 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/squashfs/dir.c  | 2 ++
 fs/squashfs/file.c | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/squashfs/dir.c b/fs/squashfs/dir.c
index a2ade63eccdf38cd7829a1e79efbb6cb607fa54f..cd3598bd034f01c74eb2e840187e14cb05b640f3 100644
--- a/fs/squashfs/dir.c
+++ b/fs/squashfs/dir.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/fs.h>
+#include <linux/filelock.h>
 #include <linux/vfs.h>
 #include <linux/slab.h>
 
@@ -220,4 +221,5 @@ const struct file_operations squashfs_dir_ops = {
 	.read = generic_read_dir,
 	.iterate_shared = squashfs_readdir,
 	.llseek = generic_file_llseek,
+	.setlease = generic_setlease,
 };
diff --git a/fs/squashfs/file.c b/fs/squashfs/file.c
index 1582e0637a7ec87c02afee845dce052259e6af1b..4be92206e755dc6b385bc9de456449c5ed4385b7 100644
--- a/fs/squashfs/file.c
+++ b/fs/squashfs/file.c
@@ -28,6 +28,7 @@
  */
 
 #include <linux/fs.h>
+#include <linux/filelock.h>
 #include <linux/vfs.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
@@ -775,5 +776,6 @@ const struct file_operations squashfs_file_operations = {
 	.llseek		= squashfs_llseek,
 	.read_iter	= generic_file_read_iter,
 	.mmap_prepare	= generic_file_readonly_mmap_prepare,
-	.splice_read	= filemap_splice_read
+	.splice_read	= filemap_splice_read,
+	.setlease	= generic_setlease,
 };

-- 
2.52.0