ocfs2: Use do_sync_mapping_range() in ocfs2_zero_tail_for_truncate()

Do this instead of filemap_fdatawrite() - this way we sync only the
range between i_size and the cluster boundary.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 98694a1add43..027cf5d05ffb 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -3517,6 +3517,7 @@ int ocfs2_zero_tail_for_truncate(struct inode *inode, handle_t *handle,
                                  u64 new_i_size)
 {
         int ret, numpages;
+        loff_t endbyte;
         struct page **pages = NULL;
         u64 phys;
 
@@ -3555,7 +3556,9 @@ int ocfs2_zero_tail_for_truncate(struct inode *inode, handle_t *handle,
          * wait on them - the truncate_inode_pages() call later will
          * do that for us.
          */
-        ret = filemap_fdatawrite(inode->i_mapping);
+        endbyte = ocfs2_align_bytes_to_clusters(inode->i_sb, new_i_size);
+        ret = do_sync_mapping_range(inode->i_mapping, new_i_size,
+                                    endbyte - 1, SYNC_FILE_RANGE_WRITE);
         if (ret)
                 mlog_errno(ret);