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-rw-r--r--bits/mman-linux.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/bits/mman-linux.h b/bits/mman-linux.h
index dbb994bf4d..29986d3cd2 100644
--- a/bits/mman-linux.h
+++ b/bits/mman-linux.h
@@ -81,6 +81,7 @@
# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */
# define MADV_WILLNEED 3 /* Will need these pages. */
# define MADV_DONTNEED 4 /* Don't need these pages. */
+# define MADV_FREE 8 /* Free pages only if memory pressure. */
# define MADV_REMOVE 9 /* Remove these pages and resources. */
# define MADV_DONTFORK 10 /* Do not inherit across fork. */
# define MADV_DOFORK 11 /* Do inherit across fork. */