diff --git a/manual/llio.texi b/manual/llio.texi
index a035c3e20f..05ab44c6e7 100644
--- a/manual/llio.texi
+++ b/manual/llio.texi
@@ -1762,6 +1762,15 @@ write dirty metadata out whenever dirty data is written out.  Unlike
 most other flags, this one will fail unless @code{MAP_SHARED_VALIDATE}
 is also given.
 
+@item MAP_DROPPABLE
+Request the page to be never written out to swap, it will be zeroed
+under memory pressure (so kernel can just drop the page), it is inherited
+by fork, it is not counted against @code{mlock} budget, and if there is
+not enough memory to service a page fault there is no fatal error (so no
+signal is sent).
+
+The @code{MAP_DROPPABLE} flag is specific to Linux.
+
 @end vtable
 
 @code{mmap} returns the address of the new mapping, or
diff --git a/sysdeps/unix/sysv/linux/bits/mman-linux.h b/sysdeps/unix/sysv/linux/bits/mman-linux.h
index 522333c50a..161a885096 100644
--- a/sysdeps/unix/sysv/linux/bits/mman-linux.h
+++ b/sysdeps/unix/sysv/linux/bits/mman-linux.h
@@ -43,6 +43,7 @@
 #define MAP_PRIVATE	0x02		/* Changes are private.  */
 #define MAP_SHARED_VALIDATE	0x03	/* Share changes and validate
 					   extension flags.  */
+#define MAP_DROPPABLE	0x08		/* Zero memory under memory pressure.  */
 #define MAP_TYPE	0x0f		/* Mask for type of mapping.  */
 
 /* Other flags.  */
diff --git a/sysdeps/unix/sysv/linux/tst-mman-consts.py b/sysdeps/unix/sysv/linux/tst-mman-consts.py
index a1137eb1d5..2191bea36f 100644
--- a/sysdeps/unix/sysv/linux/tst-mman-consts.py
+++ b/sysdeps/unix/sysv/linux/tst-mman-consts.py
@@ -33,7 +33,7 @@ def main():
                         help='C compiler (including options) to use')
     args = parser.parse_args()
     linux_version_headers = glibcsyscalls.linux_kernel_version(args.cc)
-    linux_version_glibc = (6, 10)
+    linux_version_glibc = (6, 11)
     sys.exit(glibcextract.compare_macro_consts(
         '#define _GNU_SOURCE 1\n'
         '#include <sys/mman.h>\n',