From 43e4cb942e88e756b41ea4d30249a47973880508 Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Wed, 24 Jul 2019 20:16:31 +0300
Subject: [PATCH] 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>
---
fs/locks.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index 686eae21daf6..24d1db632f6c 100644
--- 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 */