int (*lm_grant)(struct file_lock *, struct file_lock *, int);
void (*lm_break)(struct file_lock *); /* break_lease callback */
int (*lm_change)(struct file_lock **, int);
+ bool (*lm_breaker_owns_lease)(struct file_lock *);
locking rules:
lm_grant: no no no
lm_break: yes no no
lm_change yes no no
+lm_breaker_owns_lease: no no no
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