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-rw-r--r--sysdeps/unix/sysv/linux/bits/mman-shared.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/mman-shared.h b/sysdeps/unix/sysv/linux/bits/mman-shared.h
index 5bbcbbc..bee99c2 100644
--- a/sysdeps/unix/sysv/linux/bits/mman-shared.h
+++ b/sysdeps/unix/sysv/linux/bits/mman-shared.h
@@ -28,12 +28,21 @@
# define MFD_HUGETLB 4U
# endif
+/* Flags for mlock2. */
+# ifndef MLOCK_ONFAULT
+# define MLOCK_ONFAULT 1U
+# endif
+
__BEGIN_DECLS
/* Create a new memory file descriptor. NAME is a name for debugging.
FLAGS is a combination of the MFD_* constants. */
int memfd_create (const char *__name, unsigned int __flags) __THROW;
+/* Lock pages from ADDR (inclusive) to ADDR + LENGTH (exclusive) into
+ memory. FLAGS is a combination of the MLOCK_* flags above. */
+int mlock2 (const void *__addr, size_t __length, unsigned int __flags) __THROW;
+
__END_DECLS
#endif /* __USE_GNU */