pagevec: Use xa_mark_t

Removes sparse warnings.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 31e8270..8afbb35 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -366,7 +366,7 @@ static int gfs2_write_cache_jdata(struct address_space *mapping,
 	pgoff_t done_index;
 	int cycled;
 	int range_whole = 0;
-	int tag;
+	xa_mark_t tag;
 
 	pagevec_init(&pvec);
 	if (wbc->range_cyclic) {