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-rw-r--r--include/sys/mman.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sys/mman.h b/include/sys/mman.h
index 0184f642..aa2c4817 100644
--- a/include/sys/mman.h
+++ b/include/sys/mman.h
@@ -98,6 +98,7 @@ extern "C" {
#define MADV_POPULATE_READ 22
#define MADV_POPULATE_WRITE 23
#define MADV_DONTNEED_LOCKED 24
+#define MADV_COLLAPSE 25
#define MADV_HWPOISON 100
#define MADV_SOFT_OFFLINE 101
#endif