criu: pagemap: make punch_hole static

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/include/pagemap.h

@@ -90,5 +90,4 @@ extern void pagemap2iovec(PagemapEntry *pe, struct iovec *iov);
 extern void iovec2pagemap(struct iovec *iov, PagemapEntry *pe);
 
 extern int dedup_one_iovec(struct page_read *pr, struct iovec *iov);
-extern int punch_hole(struct page_read *pr, unsigned long off, unsigned long len, bool cleanup);
 #endif /* __CR_PAGE_READ_H__ */

criu/pagemap.c

@@ -38,8 +38,8 @@ static inline bool can_extend_batch(struct iovec *bunch,
 		(bunch->iov_len == 0 || bunch->iov_len + len < MAX_BUNCH_SIZE * PAGE_SIZE);
 }
 
-int punch_hole(struct page_read *pr, unsigned long off, unsigned long len,
-	       bool cleanup)
+static int punch_hole(struct page_read *pr, unsigned long off,
+		      unsigned long len, bool cleanup)
 {
 	int ret;
 	struct iovec * bunch = &pr->bunch;