Can I change the signal used for terminating processes of accessing the filesystem in the stop operation of Filesystem resource in the Pacemaker cluster?

Issue

When a Filesystem resource is stopping, the processes using the filesystem are terminated via SIGTERM or SIGKILL.
Can I change these signals to other signals?

Sep 15 17:00:59  Filesystem(fs1)[272114]:    ERROR: Couldn't unmount /mnt/fs1; trying cleanup with TERM
Sep 15 17:00:59  Filesystem(fs1)[272114]:    INFO: No processes on /mnt/fs1 were signalled. force_unmount is set to 'true'
...
Sep 15 17:01:02  Filesystem(fs1)[272114]:    ERROR: Couldn't unmount /mnt/fs1; trying cleanup with KILL
Sep 15 17:01:02  Filesystem(fs1)[272114]:    INFO: No processes on /mnt/fs1 were signalled. force_unmount is set to 'true'
...