[PATCH] xfs: stop calling filemap_fdatawait inside ->fsync

[Christoph Hellwig]

Now that the VFS actually waits for the data I/O to complete before
calling into ->fsync we can stop doing it ourselves.

Signed-off-by: Christoph Hellwig <hch at lst.de>

Index: linux-2.6/fs/xfs/linux-2.6/xfs_file.c
===================================================================
--- linux-2.6.orig/fs/xfs/linux-2.6/xfs_file.c	2009-09-26 14:09:24.933003650 -0300
+++ linux-2.6/fs/xfs/linux-2.6/xfs_file.c	2009-09-26 14:09:46.804256831 -0300
@@ -176,14 +176,7 @@ xfs_file_fsync(
 	struct dentry		*dentry,
 	int			datasync)
 {
-	struct inode		*inode = dentry->d_inode;
 	struct xfs_inode	*ip = XFS_I(inode);
-	int			error;
-
-	/* capture size updates in I/O completion before writing the inode. */
-	error = filemap_fdatawait(inode->i_mapping);
-	if (error)
-		return error;
 
 	xfs_iflags_clear(ip, XFS_ITRUNCATED);
 	return -xfs_fsync(ip);