From: Joseph Myers <joseph@codesourcery.com>
Date: Thu, 22 Dec 2022 15:12:52 +0000 (+0000)
Subject: Define MADV_COLLAPSE from Linux 6.1
X-Git-Tag: glibc-2.37~63
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=81a94a2ae34bac9c3d907bbe0468ba56914accb0;p=thirdparty%2Fglibc.git

Define MADV_COLLAPSE from Linux 6.1

Add the MADV_COLLAPSE constant from Linux 6.1 to bits/mman-linux.h and
the hppa bits/mman.h.

Tested for x86_64.
---

diff --git a/sysdeps/unix/sysv/linux/bits/mman-linux.h b/sysdeps/unix/sysv/linux/bits/mman-linux.h
index 1fb7f888aa5..c3818ce356f 100644
--- a/sysdeps/unix/sysv/linux/bits/mman-linux.h
+++ b/sysdeps/unix/sysv/linux/bits/mman-linux.h
@@ -91,6 +91,7 @@
 				   writable.  */
 # define MADV_DONTNEED_LOCKED 24 /* Like MADV_DONTNEED, but drop
 				    locked pages too.  */
+# define MADV_COLLAPSE    25	/* Synchronous hugepage collapse.  */
 # define MADV_HWPOISON	  100	/* Poison a page for testing.  */
 #endif
 
diff --git a/sysdeps/unix/sysv/linux/hppa/bits/mman.h b/sysdeps/unix/sysv/linux/hppa/bits/mman.h
index acaa1cc3e79..1d895a52344 100644
--- a/sysdeps/unix/sysv/linux/hppa/bits/mman.h
+++ b/sysdeps/unix/sysv/linux/hppa/bits/mman.h
@@ -79,4 +79,6 @@
 # define MADV_WIPEONFORK 71	/* Zero memory on fork, child only.  */
 # undef MADV_KEEPONFORK
 # define MADV_KEEPONFORK 72	/* Undo MADV_WIPEONFORK.  */
+# undef MADV_COLLAPSE
+# define MADV_COLLAPSE   73	/* Synchronous hugepage collapse.  */
 #endif