[PATCH] locks: revise generic_add_lease tracepoint

[PATCH] locks: revise generic_add_lease tracepoint

[Jeff Layton]

Now that check_conflicting_open uses inode->i_readcount instead of
the dentry->d_count to detect opens for read, revise the tracepoint
to display that value instead.

Also, fl is never NULL, so no need to check for that in the fast
assign section.

Cc: Amir Goldstein <amir73il@gmail.com>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 include/trace/events/filelock.h | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h
index 4b735923f2ff..c705e4944a50 100644
--- a/include/trace/events/filelock.h
+++ b/include/trace/events/filelock.h
@@ -176,7 +176,7 @@ TRACE_EVENT(generic_add_lease,
 	TP_STRUCT__entry(
 		__field(unsigned long, i_ino)
 		__field(int, wcount)
-		__field(int, dcount)
+		__field(int, rcount)
 		__field(int, icount)
 		__field(dev_t, s_dev)
 		__field(fl_owner_t, fl_owner)
@@ -188,16 +188,16 @@ TRACE_EVENT(generic_add_lease,
 		__entry->s_dev = inode->i_sb->s_dev;
 		__entry->i_ino = inode->i_ino;
 		__entry->wcount = atomic_read(&inode->i_writecount);
-		__entry->dcount = d_count(fl->fl_file->f_path.dentry);
+		__entry->rcount = atomic_read(&inode->i_readcount);
 		__entry->icount = atomic_read(&inode->i_count);
-		__entry->fl_owner = fl ? fl->fl_owner : NULL;
-		__entry->fl_flags = fl ? fl->fl_flags : 0;
-		__entry->fl_type = fl ? fl->fl_type : 0;
+		__entry->fl_owner = fl->fl_owner;
+		__entry->fl_flags = fl->fl_flags;
+		__entry->fl_type = fl->fl_type;
 	),
 
-	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",
+	TP_printk("dev=0x%x:0x%x ino=0x%lx wcount=%d rcount=%d icount=%d fl_owner=0x%p fl_flags=%s fl_type=%s",
 		MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
-		__entry->i_ino, __entry->wcount, __entry->dcount,
+		__entry->i_ino, __entry->wcount, __entry->rcount,
 		__entry->icount, __entry->fl_owner,
 		show_fl_flags(__entry->fl_flags),
 		show_fl_type(__entry->fl_type))
-- 
2.21.0