4.19-stable review patch. If anyone has any objections, please let me know.
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From: Jeff Layton jlayton@kernel.org
[ 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@kernel.org Signed-off-by: Eric Van Hensbergen ericvh@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/9p/vfs_file.c | 2 ++ 1 file changed, 2 insertions(+)
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, };