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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/include/trace/events/filelock.h
..
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@@ -68,7 +68,7 @@
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 		__field(struct file_lock *, fl)
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 		__field(unsigned long, i_ino)
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 		__field(dev_t, s_dev)
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-		__field(struct file_lock *, fl_next)
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+		__field(struct file_lock *, fl_blocker)
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 		__field(fl_owner_t, fl_owner)
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 		__field(unsigned int, fl_pid)
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 		__field(unsigned int, fl_flags)
..
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@@ -82,7 +82,7 @@
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 		__entry->fl = fl ? fl : NULL;
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 		__entry->s_dev = inode->i_sb->s_dev;
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 		__entry->i_ino = inode->i_ino;
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-		__entry->fl_next = fl ? fl->fl_next : NULL;
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+		__entry->fl_blocker = fl ? fl->fl_blocker : NULL;
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 		__entry->fl_owner = fl ? fl->fl_owner : NULL;
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 		__entry->fl_pid = fl ? fl->fl_pid : 0;
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 		__entry->fl_flags = fl ? fl->fl_flags : 0;
..
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@@ -92,9 +92,9 @@
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 		__entry->ret = ret;
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 	),
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-	TP_printk("fl=0x%p dev=0x%x:0x%x ino=0x%lx fl_next=0x%p fl_owner=0x%p fl_pid=%u fl_flags=%s fl_type=%s fl_start=%lld fl_end=%lld ret=%d",
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+	TP_printk("fl=%p dev=0x%x:0x%x ino=0x%lx fl_blocker=%p fl_owner=%p fl_pid=%u fl_flags=%s fl_type=%s fl_start=%lld fl_end=%lld ret=%d",
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 		__entry->fl, MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
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-		__entry->i_ino, __entry->fl_next, __entry->fl_owner,
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+		__entry->i_ino, __entry->fl_blocker, __entry->fl_owner,
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 		__entry->fl_pid, show_fl_flags(__entry->fl_flags),
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 		show_fl_type(__entry->fl_type),
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 		__entry->fl_start, __entry->fl_end, __entry->ret)
..
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@@ -125,7 +125,7 @@
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 		__field(struct file_lock *, fl)
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 		__field(unsigned long, i_ino)
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 		__field(dev_t, s_dev)
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-		__field(struct file_lock *, fl_next)
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+		__field(struct file_lock *, fl_blocker)
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 		__field(fl_owner_t, fl_owner)
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 		__field(unsigned int, fl_flags)
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 		__field(unsigned char, fl_type)
..
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@@ -137,7 +137,7 @@
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 		__entry->fl = fl ? fl : NULL;
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 		__entry->s_dev = inode->i_sb->s_dev;
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 		__entry->i_ino = inode->i_ino;
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-		__entry->fl_next = fl ? fl->fl_next : NULL;
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+		__entry->fl_blocker = fl ? fl->fl_blocker : NULL;
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 		__entry->fl_owner = fl ? fl->fl_owner : NULL;
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 		__entry->fl_flags = fl ? fl->fl_flags : 0;
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 		__entry->fl_type = fl ? fl->fl_type : 0;
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@@ -145,9 +145,9 @@
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 		__entry->fl_downgrade_time = fl ? fl->fl_downgrade_time : 0;
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 	),
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-	TP_printk("fl=0x%p dev=0x%x:0x%x ino=0x%lx fl_next=0x%p fl_owner=0x%p fl_flags=%s fl_type=%s fl_break_time=%lu fl_downgrade_time=%lu",
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+	TP_printk("fl=%p dev=0x%x:0x%x ino=0x%lx fl_blocker=%p fl_owner=%p fl_flags=%s fl_type=%s fl_break_time=%lu fl_downgrade_time=%lu",
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 		__entry->fl, MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
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-		__entry->i_ino, __entry->fl_next, __entry->fl_owner,
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+		__entry->i_ino, __entry->fl_blocker, __entry->fl_owner,
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 		show_fl_flags(__entry->fl_flags),
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 		show_fl_type(__entry->fl_type),
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 		__entry->fl_break_time, __entry->fl_downgrade_time)
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@@ -176,7 +176,7 @@
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 	TP_STRUCT__entry(
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 		__field(unsigned long, i_ino)
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 		__field(int, wcount)
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-		__field(int, dcount)
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+		__field(int, rcount)
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 		__field(int, icount)
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 		__field(dev_t, s_dev)
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 		__field(fl_owner_t, fl_owner)
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@@ -188,21 +188,56 @@
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 		__entry->s_dev = inode->i_sb->s_dev;
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 		__entry->i_ino = inode->i_ino;
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 		__entry->wcount = atomic_read(&inode->i_writecount);
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-		__entry->dcount = d_count(fl->fl_file->f_path.dentry);
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+		__entry->rcount = atomic_read(&inode->i_readcount);
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 		__entry->icount = atomic_read(&inode->i_count);
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-		__entry->fl_owner = fl ? fl->fl_owner : NULL;
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-		__entry->fl_flags = fl ? fl->fl_flags : 0;
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-		__entry->fl_type = fl ? fl->fl_type : 0;
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+		__entry->fl_owner = fl->fl_owner;
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+		__entry->fl_flags = fl->fl_flags;
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+		__entry->fl_type = fl->fl_type;
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 	),
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-	TP_printk("dev=0x%x:0x%x ino=0x%lx wcount=%d dcount=%d icount=%d fl_owner=0x%p fl_flags=%s fl_type=%s",
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+	TP_printk("dev=0x%x:0x%x ino=0x%lx wcount=%d rcount=%d icount=%d fl_owner=%p fl_flags=%s fl_type=%s",
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 		MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
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-		__entry->i_ino, __entry->wcount, __entry->dcount,
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+		__entry->i_ino, __entry->wcount, __entry->rcount,
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 		__entry->icount, __entry->fl_owner,
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 		show_fl_flags(__entry->fl_flags),
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 		show_fl_type(__entry->fl_type))
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 );
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+TRACE_EVENT(leases_conflict,
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+	TP_PROTO(bool conflict, struct file_lock *lease, struct file_lock *breaker),
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+
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+	TP_ARGS(conflict, lease, breaker),
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+
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+	TP_STRUCT__entry(
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+		__field(void *, lease)
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+		__field(void *, breaker)
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+		__field(unsigned int, l_fl_flags)
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+		__field(unsigned int, b_fl_flags)
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+		__field(unsigned char, l_fl_type)
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+		__field(unsigned char, b_fl_type)
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+		__field(bool, conflict)
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+	),
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+
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+	TP_fast_assign(
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+		__entry->lease = lease;
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+		__entry->l_fl_flags = lease->fl_flags;
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+		__entry->l_fl_type = lease->fl_type;
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+		__entry->breaker = breaker;
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+		__entry->b_fl_flags = breaker->fl_flags;
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+		__entry->b_fl_type = breaker->fl_type;
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+		__entry->conflict = conflict;
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+	),
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+
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+	TP_printk("conflict %d: lease=%p fl_flags=%s fl_type=%s; breaker=%p fl_flags=%s fl_type=%s",
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+		__entry->conflict,
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+		__entry->lease,
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+		show_fl_flags(__entry->l_fl_flags),
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+		show_fl_type(__entry->l_fl_type),
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+		__entry->breaker,
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+		show_fl_flags(__entry->b_fl_flags),
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+		show_fl_type(__entry->b_fl_type))
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+);
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+
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 #endif /* _TRACE_FILELOCK_H */
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 /* This part must be outside protection */