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-rw-r--r--include/exec/ramblock.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/exec/ramblock.h b/include/exec/ramblock.h
index 848915ea5b..0babd105c0 100644
--- a/include/exec/ramblock.h
+++ b/include/exec/ramblock.h
@@ -41,6 +41,7 @@ struct RAMBlock {
     QLIST_HEAD(, RAMBlockNotifier) ramblock_notifiers;
     int fd;
     uint64_t fd_offset;
+    int guest_memfd;
     size_t page_size;
     /* dirty bitmap used during migration */
     unsigned long *bmap;
@@ -57,7 +58,7 @@ struct RAMBlock {
     off_t bitmap_offset;
     uint64_t pages_offset;
 
-    /* bitmap of already received pages in postcopy */
+    /* Bitmap of already received pages.  Only used on destination side. */
     unsigned long *receivedmap;
 
     /*