From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 8 Sep 2012 04:40:37 +0000 (-0400)
Subject: add linux readahead syscall
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=90f770523f54b2e63a6ad46cba0149c9dc01ddd4

add linux readahead syscall
---

diff --git a/include/fcntl.h b/include/fcntl.h
index 68baf7a2..b8d8702e 100644
--- a/include/fcntl.h
+++ b/include/fcntl.h
@@ -123,6 +123,7 @@ struct f_owner_ex {
 #define SPLICE_F_MORE 4
 #define SPLICE_F_GIFT 8
 int fallocate(int, int, off_t, off_t);
+ssize_t readahead(int, off_t, size_t);
 ssize_t vmsplice(int, const struct iovec *, size_t, unsigned);
 ssize_t splice(int, off_t *, int, off_t *, size_t, unsigned);
 #define loff_t off_t
diff --git a/src/linux/readahead.c b/src/linux/readahead.c
new file mode 100644
index 00000000..5c70bfd6
--- /dev/null
+++ b/src/linux/readahead.c
@@ -0,0 +1,8 @@
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include "syscall.h"
+
+ssize_t readahead(int fd, off_t pos, size_t len)
+{
+	return syscall(SYS_readahead, fd, __SYSCALL_LL_O(pos), len);
+}