X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=os%2Fos-linux.h;h=e7d600dd58cbb3f6ffd1e43f5516fdd6fc0bd18a;hp=8c1e93be067c9e0cd702ed23b4e8baba5a7f5ef7;hb=2c3e17be4c7c9a737317ada414b98929652fec15;hpb=5283741f7be708fbbb3feb2cd5ca5187f3a964d1

diff --git a/os/os-linux.h b/os/os-linux.h
index 8c1e93be..e7d600dd 100644
--- a/os/os-linux.h
+++ b/os/os-linux.h
@@ -392,4 +392,22 @@ static inline int shm_attach_to_open_removed(void)
 	return 1;
 }
 
+#ifdef CONFIG_LINUX_FALLOCATE
+#define FIO_HAVE_NATIVE_FALLOCATE
+static inline bool fio_fallocate(struct fio_file *f, uint64_t offset,
+				 uint64_t len)
+{
+	int ret;
+	ret = fallocate(f->fd, 0, 0, len);
+	if (ret == 0)
+		return true;
+
+	/* Work around buggy old glibc versions... */
+	if (ret > 0)
+		errno = ret;
+
+	return false;
+}
+#endif
+
 #endif