1 files changed, 2 insertions, 0 deletions
diff --git a/src/pcache.h b/src/pcache.h
index b9135fd..f4d4ad7 100644
--- a/src/pcache.h
+++ b/src/pcache.h
@@ -53,6 +53,8 @@ struct PgHdr {
 #define PGHDR_REUSE_UNLIKELY    0x010  /* A hint that reuse is unlikely */
 #define PGHDR_DONT_WRITE        0x020  /* Do not write content to disk */
 
+#define PGHDR_MMAP              0x040  /* This is an mmap page object */
+
 /* Initialize and shutdown the page cache subsystem */
 int sqlite3PcacheInitialize(void);
 void sqlite3PcacheShutdown(void);