diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index e65357bb3dc6..d02201df855b 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -37,7 +37,6 @@ xfs-y				+= xfs_aops.o \
 				   xfs_file.o \
 				   xfs_filestream.o \
 				   xfs_fsops.o \
-				   xfs_fs_subr.o \
 				   xfs_globals.o \
 				   xfs_icache.o \
 				   xfs_ioctl.o \
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index b2c63a28afa7..d0e9c74d3d96 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -246,12 +246,10 @@ xfs_swap_extents(
 		goto out_unlock;
 	}
 
-	if (VN_CACHED(VFS_I(tip)) != 0) {
-		error = xfs_flushinval_pages(tip, 0, -1,
-				FI_REMAPF_LOCKED);
-		if (error)
-			goto out_unlock;
-	}
+	error = -filemap_write_and_wait(VFS_I(ip)->i_mapping);
+	if (error)
+		goto out_unlock;
+	truncate_pagecache_range(VFS_I(ip), 0, -1);
 
 	/* Verify O_DIRECT for ftmp */
 	if (VN_CACHED(VFS_I(tip)) != 0) {
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index daf4066c24b2..c42f99e71f14 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -255,15 +255,14 @@ xfs_file_aio_read(
 		xfs_buftarg_t	*target =
 			XFS_IS_REALTIME_INODE(ip) ?
 				mp->m_rtdev_targp : mp->m_ddev_targp;
-		if ((iocb->ki_pos & target->bt_smask) ||
-		    (size & target->bt_smask)) {
-			if (iocb->ki_pos == i_size_read(inode))
+		if ((pos & target->bt_smask) || (size & target->bt_smask)) {
+			if (pos == i_size_read(inode))
 				return 0;
 			return -XFS_ERROR(EINVAL);
 		}
 	}
 
-	n = mp->m_super->s_maxbytes - iocb->ki_pos;
+	n = mp->m_super->s_maxbytes - pos;
 	if (n <= 0 || size == 0)
 		return 0;
 
@@ -289,20 +288,21 @@ xfs_file_aio_read(
 		xfs_rw_ilock(ip, XFS_IOLOCK_EXCL);
 
 		if (inode->i_mapping->nrpages) {
-			ret = -xfs_flushinval_pages(ip,
-					(iocb->ki_pos & PAGE_CACHE_MASK),
-					-1, FI_REMAPF_LOCKED);
+			ret = -filemap_write_and_wait_range(
+							VFS_I(ip)->i_mapping,
+							pos, -1);
 			if (ret) {
 				xfs_rw_iunlock(ip, XFS_IOLOCK_EXCL);
 				return ret;
 			}
+			truncate_pagecache_range(VFS_I(ip), pos, -1);
 		}
 		xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL);
 	}
 
-	trace_xfs_file_read(ip, size, iocb->ki_pos, ioflags);
+	trace_xfs_file_read(ip, size, pos, ioflags);
 
-	ret = generic_file_aio_read(iocb, iovp, nr_segs, iocb->ki_pos);
+	ret = generic_file_aio_read(iocb, iovp, nr_segs, pos);
 	if (ret > 0)
 		XFS_STATS_ADD(xs_read_bytes, ret);
 
@@ -670,10 +670,11 @@ xfs_file_dio_aio_write(
 		goto out;
 
 	if (mapping->nrpages) {
-		ret = -xfs_flushinval_pages(ip, (pos & PAGE_CACHE_MASK), -1,
-							FI_REMAPF_LOCKED);
+		ret = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
+						    pos, -1);
 		if (ret)
 			goto out;
+		truncate_pagecache_range(VFS_I(ip), pos, -1);
 	}
 
 	/*
diff --git a/fs/xfs/xfs_fs_subr.c b/fs/xfs/xfs_fs_subr.c
deleted file mode 100644
index b5380893728e..000000000000
--- a/fs/xfs/xfs_fs_subr.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (c) 2000-2002,2005-2006 Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write the Free Software Foundation,
- * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-#include "xfs.h"
-#include "xfs_vnodeops.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_inode.h"
-#include "xfs_trace.h"
-
-/*
- * note: all filemap functions return negative error codes. These
- * need to be inverted before returning to the xfs core functions.
- */
-int
-xfs_flushinval_pages(
-	xfs_inode_t	*ip,
-	xfs_off_t	first,
-	xfs_off_t	last,
-	int		fiopt)
-{
-	struct address_space *mapping = VFS_I(ip)->i_mapping;
-	int		ret = 0;
-
-	trace_xfs_pagecache_inval(ip, first, last);
-
-	xfs_iflags_clear(ip, XFS_ITRUNCATED);
-	ret = filemap_write_and_wait_range(mapping, first,
-				last == -1 ? LLONG_MAX : last);
-	if (!ret)
-		truncate_inode_pages_range(mapping, first, last);
-	return -ret;
-}
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index c00326afa7bf..81c61fd17890 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -1958,12 +1958,11 @@ xfs_free_file_space(
 
 	rounding = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE);
 	ioffset = offset & ~(rounding - 1);
-
-	if (VN_CACHED(VFS_I(ip)) != 0) {
-		error = xfs_flushinval_pages(ip, ioffset, -1, FI_REMAPF_LOCKED);
-		if (error)
-			goto out_unlock_iolock;
-	}
+	error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
+					      ioffset, -1);
+	if (error)
+		goto out_unlock_iolock;
+	truncate_pagecache_range(VFS_I(ip), ioffset, -1);
 
 	/*
 	 * Need to zero the stuff we're not freeing, on disk.
diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h
index 73cb3cb15f75..91a03fa3814f 100644
--- a/fs/xfs/xfs_vnodeops.h
+++ b/fs/xfs/xfs_vnodeops.h
@@ -48,8 +48,6 @@ int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
 int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
 int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
 		int flags, struct attrlist_cursor_kern *cursor);
-int xfs_flushinval_pages(struct xfs_inode *ip, xfs_off_t first,
-		xfs_off_t last, int fiopt);
 
 int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t);
 int xfs_free_eofblocks(struct xfs_mount *, struct xfs_inode *, bool);