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-rw-r--r--libc/sysdeps/linux/common/bits/kernel-features.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h
index 4d1e0cbc3..6184c2b9d 100644
--- a/libc/sysdeps/linux/common/bits/kernel-features.h
+++ b/libc/sysdeps/linux/common/bits/kernel-features.h
@@ -495,6 +495,14 @@
# define __ASSUME_PRIVATE_FUTEX 1
#endif
+/* Support for fallocate was added in 2.6.23,
+ on s390 only after 2.6.23-rc1, on alpha only after 2.6.33-rc1. */
+#if __LINUX_KERNEL_VERSION >= 0x020617 \
+ && (!defined __s390__ || __LINUX_KERNEL_VERSION >= 0x020618) \
+ && (!defined __alpha__ || __LINUX_KERNEL_VERSION >= 0x020621)
+# define __ASSUME_FALLOCATE 1
+#endif
+
/* getcpu is a syscall for x86-64 since 3.1. */
#if defined __x86_64__ && __LINUX_KERNEL_VERSION >= 0x030100
# define __ASSUME_GETCPU_SYSCALL 1