xfs_buflock: ignore if buffer already locked

If the trace data says we ran trylock but we were already locked, don't
record another lock.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/tools/xfsbuflock.py b/tools/xfsbuflock.py
index 82b6e01f5d24ceed245cae519516accec01e6210..cc15f582c4efb87e01ae82b010beeea6e2ba2021 100755 (executable)
--- a/tools/xfsbuflock.py
+++ b/tools/xfsbuflock.py
@@ -87,7 +87,8 @@ class Buffer:
                self.waiters = set()
 
        def trylock(self, process, time):
-               self.lockdone(process, time)
+               if not self.locked:
+                       self.lockdone(process, time)
 
        def lockdone(self, process, time):
                if self.locked: