Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef _UAPI_LINUX_MEMFD_H
2#define _UAPI_LINUX_MEMFD_H
3
4#include <asm-generic/hugetlb_encode.h>
5
6/* flags for memfd_create(2) (unsigned int) */
7#define MFD_CLOEXEC 0x0001U
8#define MFD_ALLOW_SEALING 0x0002U
9#define MFD_HUGETLB 0x0004U
10
11/*
12 * Huge page size encoding when MFD_HUGETLB is specified, and a huge page
13 * size other than the default is desired. See hugetlb_encode.h.
14 * All known huge page size encodings are provided here. It is the
15 * responsibility of the application to know which sizes are supported on
16 * the running system. See mmap(2) man page for details.
17 */
18#define MFD_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT
19#define MFD_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK
20
21#define MFD_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB
22#define MFD_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB
23#define MFD_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB
24#define MFD_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
25#define MFD_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
26#define MFD_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
27#define MFD_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
28#define MFD_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
29#define MFD_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
30#define MFD_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
31
32#endif /* _UAPI_LINUX_MEMFD_H */