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-rw-r--r--manual/memory.texi2
1 files changed, 1 insertions, 1 deletions
diff --git a/manual/memory.texi b/manual/memory.texi
index 700555ed46..3d99147592 100644
--- a/manual/memory.texi
+++ b/manual/memory.texi
@@ -1520,7 +1520,7 @@ This is the total number of chunks allocated with @code{mmap}.
 This is the total size of memory allocated with @code{mmap}, in bytes.
 
 @item int usmblks
-This field is unused.
+This field is unused and always 0.
 
 @item int fsmblks
 This field is unused.