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-rw-r--r--sys/vm/vm_page.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h
index 7e0fff8..b2ddeb4 100644
--- a/sys/vm/vm_page.h
+++ b/sys/vm/vm_page.h
@@ -133,6 +133,7 @@ struct vm_page {
u_short valid; /* map of valid DEV_BSIZE chunks */
u_short dirty; /* map of dirty DEV_BSIZE chunks */
#endif
+ u_int cow; /* page cow mapping count */
};
/*
@@ -363,5 +364,9 @@ int vm_page_bits (int, int);
void vm_page_zero_invalid(vm_page_t m, boolean_t setvalid);
void vm_page_free_toq(vm_page_t m);
void vm_page_zero_idle_wakeup(void);
+void vm_page_cowfault (vm_page_t);
+void vm_page_cowsetup (vm_page_t);
+void vm_page_cowclear (vm_page_t);
+
#endif /* _KERNEL */
#endif /* !_VM_PAGE_ */
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