[PATCH v2 03/28] filelock: add a tracepoint to start of break_lease()

Jeff Layton
2026-04-16T17:35:40Z

...mostly to show the LEASE_BREAK_* flags.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
fs/locks.c | 2 ++
include/trace/events/filelock.h | 33 +++++++++++++++++++++++++++++++++
2 files changed, 35 insertions(+)

diff --git a/fs/locks.c b/fs/locks.c
index 8b5958f34b61..792c3920b33a 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1651,6 +1651,8 @@ int __break_lease(struct inode *inode, unsigned int flags)
bool want_write = !(flags & LEASE_BREAK_OPEN_RDONLY);
int error = 0;

+ trace_break_lease(inode, flags);
+
type = break_lease_flags_to_type(flags);
if (!type)
return -EINVAL;
diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h
index ef4bb0afb86a..fff0ee2d452d 100644
--- a/include/trace/events/filelock.h
+++ b/include/trace/events/filelock.h
@@ -120,6 +120,39 @@ DEFINE_EVENT(filelock_lock, flock_lock_inode,
TP_PROTO(struct inode *inode, struct file_lock *fl, int ret),
TP_ARGS(inode, fl, ret));

+#define show_lease_break_flags(val) \
+ __print_flags(val, "|", \
+ { LEASE_BREAK_LEASE, "LEASE" }, \
+ { LEASE_BREAK_DELEG, "DELEG" }, \
+ { LEASE_BREAK_LAYOUT, "LAYOUT" }, \
+ { LEASE_BREAK_NONBLOCK, "NONBLOCK" }, \
+ { LEASE_BREAK_OPEN_RDONLY, "OPEN_RDONLY" }, \
+ { LEASE_BREAK_DIR_CREATE, "DIR_CREATE" }, \
+ { LEASE_BREAK_DIR_DELETE, "DIR_DELETE" }, \
+ { LEASE_BREAK_DIR_RENAME, "DIR_RENAME" })
+
+TRACE_EVENT(break_lease,
+ TP_PROTO(struct inode *inode, unsigned int flags),
+
+ TP_ARGS(inode, flags),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, i_ino)
+ __field(dev_t, s_dev)
+ __field(unsigned int, flags)
+ ),
+
+ TP_fast_assign(
+ __entry->s_dev = inode->i_sb->s_dev;
+ __entry->i_ino = inode->i_ino;
+ __entry->flags = flags;
+ ),
+
+ TP_printk("dev=0x%x:0x%x ino=0x%lx flags=%s",
+ MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
+ __entry->i_ino, show_lease_break_flags(__entry->flags))
+);
+
DECLARE_EVENT_CLASS(filelock_lease,
TP_PROTO(struct inode *inode, struct file_lease *fl),

--
2.53.0