1 files changed, 15 insertions, 16 deletions

diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/linux-2.6/xfs_fs_subr.c
index 1f279b012f94..ed88ed16811c 100644
--- a/fs/xfs/linux-2.6/xfs_fs_subr.c
+++ b/fs/xfs/linux-2.6/xfs_fs_subr.c
@@ -32,10 +32,9 @@ xfs_tosspages(
         xfs_off_t       last,
         int             fiopt)
 {
-        struct address_space *mapping = VFS_I(ip)->i_mapping;
-
-        if (mapping->nrpages)
-                truncate_inode_pages(mapping, first);
+        /* can't toss partial tail pages, so mask them out */
+        last &= ~(PAGE_SIZE - 1);
+        truncate_inode_pages_range(VFS_I(ip)->i_mapping, first, last - 1);
 }
 
 int
@@ -50,12 +49,11 @@ xfs_flushinval_pages(
 
         trace_xfs_pagecache_inval(ip, first, last);
 
-        if (mapping->nrpages) {
-                xfs_iflags_clear(ip, XFS_ITRUNCATED);
-                ret = filemap_write_and_wait(mapping);
-                if (!ret)
-                        truncate_inode_pages(mapping, first);
-        }
+        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;
 }
 
@@ -71,10 +69,9 @@ xfs_flush_pages(
         int             ret = 0;
         int             ret2;
 
-        if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
-                xfs_iflags_clear(ip, XFS_ITRUNCATED);
-                ret = -filemap_fdatawrite(mapping);
-        }
+        xfs_iflags_clear(ip, XFS_ITRUNCATED);
+        ret = -filemap_fdatawrite_range(mapping, first,
+                                last == -1 ? LLONG_MAX : last);
         if (flags & XBF_ASYNC)
                 return ret;
         ret2 = xfs_wait_on_pages(ip, first, last);
@@ -91,7 +88,9 @@ xfs_wait_on_pages(
 {
         struct address_space *mapping = VFS_I(ip)->i_mapping;
 
-        if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK))
-                return -filemap_fdatawait(mapping);
+        if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK)) {
+                return -filemap_fdatawait_range(mapping, first,
+                                        last == -1 ? ip->i_size - 1 : last);
+        }
         return 0;
 }