[2.6.18-rc5 PATCH]: aio cleanup

[Yi Yang <yang.y.yi@gmail.com>]

As Zach Brown said, a cleanup patch is reasonable. Here it is.

This patch extracts the common part from aio_fsync and aio_fdsync
 and define a new inlined function aio_xsync, then aio_fsync and 
aio_fdsync just call aio_xsunc in the almost same way except second
 argument is different, one is 1 and another 0.

--- a/fs/aio.c.orig	2006-08-30 22:00:00.000000000 +0800
+++ b/fs/aio.c	2006-08-30 22:08:35.000000000 +0800
@@ -1363,24 +1363,24 @@ static ssize_t aio_pwrite(struct kiocb *
 	return ret;
 }
 
-static ssize_t aio_fdsync(struct kiocb *iocb)
+static inline ssize_t aio_xsync(struct kiocb *iocb, int flags)
 {
 	struct file *file = iocb->ki_filp;
 	ssize_t ret = -EINVAL;
 
 	if (file->f_op->aio_fsync)
-		ret = file->f_op->aio_fsync(iocb, 1);
+		ret = file->f_op->aio_fsync(iocb, flags);
 	return ret;
 }
 
-static ssize_t aio_fsync(struct kiocb *iocb)
+static ssize_t aio_fdsync(struct kiocb *iocb)
 {
-	struct file *file = iocb->ki_filp;
-	ssize_t ret = -EINVAL;
+	return aio_xsync(iocb, 1);
+}
 
-	if (file->f_op->aio_fsync)
-		ret = file->f_op->aio_fsync(iocb, 0);
-	return ret;
+static ssize_t aio_fsync(struct kiocb *iocb)
+{
+	return aio_xsync(iocb, 0);
 }
 
 /*