[MIPS] Fix some system calls with long long arguments

* O32 fadvise64() pass long long arguments by register pairs.  Add
  sys32 version for 64 bit kernel.
* N32 readahead() can pass a long long argument by one register.  No
  need to use sys32_readahead.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 37849edd0645..06e04da211d5 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -556,6 +556,16 @@ asmlinkage long sys32_sync_file_range(int fd, int __pad,
                         flags);
 }
 
+asmlinkage long sys32_fadvise64_64(int fd, int __pad,
+        unsigned long a2, unsigned long a3,
+        unsigned long a4, unsigned long a5,
+        int flags)
+{
+        return sys_fadvise64_64(fd,
+                        merge_64(a2, a3), merge_64(a4, a5),
+                        flags);
+}
+
 save_static_function(sys32_clone);
 __attribute_used__ noinline static int
 _sys32_clone(nabi_no_regargs struct pt_regs regs)