ocfs2: clean up unused variable in ocfs2_duplicate_clusters_by_page()

readahead_pages in ocfs2_duplicate_clusters_by_page is defined but not
used, so clean it up.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index e5d57cd..2521198 100644 (file)
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -2920,16 +2920,13 @@ int ocfs2_duplicate_clusters_by_page(handle_t *handle,
        u64 new_block = ocfs2_clusters_to_blocks(sb, new_cluster);
        struct page *page;
        pgoff_t page_index;
-       unsigned int from, to, readahead_pages;
+       unsigned int from, to;
        loff_t offset, end, map_end;
        struct address_space *mapping = inode->i_mapping;
 
        trace_ocfs2_duplicate_clusters_by_page(cpos, old_cluster,
                                               new_cluster, new_len);
 
-       readahead_pages =
-               (ocfs2_cow_contig_clusters(sb) <<
-                OCFS2_SB(sb)->s_clustersize_bits) >> PAGE_CACHE_SHIFT;
        offset = ((loff_t)cpos) << OCFS2_SB(sb)->s_clustersize_bits;
        end = offset + (new_len << OCFS2_SB(sb)->s_clustersize_bits);
        /*