locks: Fix procfs output for file leases

Since commit 778fc546f749c588aa2f ("locks: fix tracking of inprogress
lease breaks"), leases break don't change @fl_type but modifies
@fl_flags. However, procfs's part haven't been updated.

Previously, for a breaking lease the target type was printed (see
target_leasetype()), as returns fcntl(F_GETLEASE). But now it's always
"READ", as F_UNLCK no longer means "breaking". Unlike the previous
one, this behaviour don't provide a complete description of the lease.

There are /proc/pid/fdinfo/ outputs for a lease (the same for READ and
WRITE) breaked by O_WRONLY.
-- before:
lock:   1: LEASE  BREAKING  READ  2558 08:03:815793 0 EOF
-- after:
lock:   1: LEASE  BREAKING  UNLCK  2558 08:03:815793 0 EOF

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>

diff --git a/fs/locks.c b/fs/locks.c
index 686eae2..24d1db6 100644 (file)
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -2784,10 +2784,10 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
                               ? (fl->fl_type & LOCK_WRITE) ? "RW   " : "READ "
                               : (fl->fl_type & LOCK_WRITE) ? "WRITE" : "NONE ");
        } else {
-               seq_printf(f, "%s ",
-                              (lease_breaking(fl))
-                              ? (fl->fl_type == F_UNLCK) ? "UNLCK" : "READ "
-                              : (fl->fl_type == F_WRLCK) ? "WRITE" : "READ ");
+               int type = IS_LEASE(fl) ? target_leasetype(fl) : fl->fl_type;
+
+               seq_printf(f, "%s ", (type == F_WRLCK) ? "WRITE" :
+                                    (type == F_RDLCK) ? "READ" : "UNLCK");
        }
        if (inode) {
                /* userspace relies on this representation of dev_t */