This is a note to let you know that I've just added the patch titled
9p: explicitly deny setlease attempts
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
9p-explicitly-deny-setlease-attempts.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b81c24dc3f3d9288c5e5a7dd99f81b146d723a1b
Author: Jeff Layton <jlayton@xxxxxxxxxx>
Date: Tue Mar 19 12:34:45 2024 -0400
9p: explicitly deny setlease attempts
[ Upstream commit 7a84602297d36617dbdadeba55a2567031e5165b ]
9p is a remote network protocol, and it doesn't support asynchronous
notifications from the server. Ensure that we don't hand out any leases
since we can't guarantee they'll be broken when a file's contents
change.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Eric Van Hensbergen <ericvh@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 61e0c552083fe..5bb565856a8f8 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -691,6 +691,7 @@ const struct file_operations v9fs_file_operations = {
.lock = v9fs_file_lock,
.mmap = generic_file_readonly_mmap,
.fsync = v9fs_file_fsync,
+ .setlease = simple_nosetlease,
};
const struct file_operations v9fs_file_operations_dotl = {
@@ -726,4 +727,5 @@ const struct file_operations v9fs_mmap_file_operations_dotl = {
.flock = v9fs_file_flock_dotl,
.mmap = v9fs_mmap_file_mmap,
.fsync = v9fs_file_fsync_dotl,
+ .setlease = simple_nosetlease,
};
