diff -rub systemd-191-orig/src/journal/mmap-cache.h systemd-191/src/journal/mmap-cache.h
--- systemd-191-orig/src/journal/mmap-cache.h	2012-09-24 11:32:49.191136934 +0200
+++ systemd-191/src/journal/mmap-cache.h	2012-09-24 11:33:31.468947955 +0200
@@ -31,6 +31,6 @@
 MMapCache* mmap_cache_ref(MMapCache *m);
 MMapCache* mmap_cache_unref(MMapCache *m);
 
-int mmap_cache_get(MMapCache *m, int fd, int prot, unsigned context, bool keep_always, uint64_t offset, uint64_t size, struct stat *st, void **ret);
+int mmap_cache_get(MMapCache *m, int fd, int prot, unsigned context, bool keep_always, uint64_t offset, size_t size, struct stat *st, void **ret);
 void mmap_cache_close_fd(MMapCache *m, int fd);
 void mmap_cache_close_context(MMapCache *m, unsigned context);