From: Jeff Layton Date: Tue, 19 Mar 2024 16:34:45 +0000 (-0400) Subject: 9p: explicitly deny setlease attempts X-Git-Tag: v6.8.10~160 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba590cf52d199d9c9c9b5e40c0b9a7022369de5d;p=thirdparty%2Fkernel%2Fstable.git 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 Signed-off-by: Eric Van Hensbergen Signed-off-by: Sasha Levin --- diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index bae330c2f0cf0..a504240c818c8 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -520,6 +520,7 @@ const struct file_operations v9fs_file_operations = { .splice_read = v9fs_file_splice_read, .splice_write = iter_file_splice_write, .fsync = v9fs_file_fsync, + .setlease = simple_nosetlease, }; const struct file_operations v9fs_file_operations_dotl = { @@ -534,4 +535,5 @@ const struct file_operations v9fs_file_operations_dotl = { .splice_read = v9fs_file_splice_read, .splice_write = iter_file_splice_write, .fsync = v9fs_file_fsync_dotl, + .setlease = simple_nosetlease, };