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authorJoseph Myers <joseph@codesourcery.com>2021-09-14 14:19:24 +0000
committerJoseph Myers <joseph@codesourcery.com>2021-09-14 14:19:24 +0000
commit3561106278cddd2f007bd27fd4c3e90caaf14b43 (patch)
treef1d1fbae172491746824da02b991d9f7050c5399 /sysdeps/unix/sysv/linux
parent4b39e3498324d1aea802fea8d4b8764f5ddb4fd1 (diff)
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Add MADV_POPULATE_READ and MADV_POPULATE_WRITE from Linux 5.14 to bits/mman-linux.h
Linux 5.14 adds constants MADV_POPULATE_READ and MADV_POPULATE_WRITE
(with the same values on all architectures).  Add these to glibc's
bits/mman-linux.h.

Tested for x86_64.
Diffstat (limited to 'sysdeps/unix/sysv/linux')
-rw-r--r--sysdeps/unix/sysv/linux/bits/mman-linux.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/mman-linux.h b/sysdeps/unix/sysv/linux/bits/mman-linux.h
index 3b1ae418e0..31451c28d9 100644
--- a/sysdeps/unix/sysv/linux/bits/mman-linux.h
+++ b/sysdeps/unix/sysv/linux/bits/mman-linux.h
@@ -89,6 +89,10 @@
 # define MADV_KEEPONFORK  19	/* Undo MADV_WIPEONFORK.  */
 # define MADV_COLD        20	/* Deactivate these pages.  */
 # define MADV_PAGEOUT     21	/* Reclaim these pages.  */
+# define MADV_POPULATE_READ 22	/* Populate (prefault) page tables
+				   readable.  */
+# define MADV_POPULATE_WRITE 23	/* Populate (prefault) page tables
+				   writable.  */
 # define MADV_HWPOISON	  100	/* Poison a page for testing.  */
 #endif