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30 lines
1.2 KiB
30 lines
1.2 KiB
3 years ago
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commit 4ed990e5b97a61f29f929bdeb36c5b2abb547a64
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Author: Joseph Myers <joseph@codesourcery.com>
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Date: Tue Sep 14 14:19:24 2021 +0000
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Add MADV_POPULATE_READ and MADV_POPULATE_WRITE from Linux 5.14 to bits/mman-linux.h
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Linux 5.14 adds constants MADV_POPULATE_READ and MADV_POPULATE_WRITE
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(with the same values on all architectures). Add these to glibc's
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bits/mman-linux.h.
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Tested for x86_64.
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(cherry picked from commit 3561106278cddd2f007bd27fd4c3e90caaf14b43)
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diff --git a/sysdeps/unix/sysv/linux/bits/mman-linux.h b/sysdeps/unix/sysv/linux/bits/mman-linux.h
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index 3b1ae418e073c122..31451c28d93f9f72 100644
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--- a/sysdeps/unix/sysv/linux/bits/mman-linux.h
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+++ b/sysdeps/unix/sysv/linux/bits/mman-linux.h
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@@ -89,6 +89,10 @@
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# define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK. */
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# define MADV_COLD 20 /* Deactivate these pages. */
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# define MADV_PAGEOUT 21 /* Reclaim these pages. */
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+# define MADV_POPULATE_READ 22 /* Populate (prefault) page tables
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+ readable. */
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+# define MADV_POPULATE_WRITE 23 /* Populate (prefault) page tables
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+ writable. */
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# define MADV_HWPOISON 100 /* Poison a page for testing. */
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#endif
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