Plug memory leak in writeseg_end_io

Signed-off-by: Joern Engel <joern@logfs.org>
diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c
index f99f5dc..a5d0c56 100644
--- a/fs/logfs/dev_bdev.c
+++ b/fs/logfs/dev_bdev.c
@@ -80,6 +80,7 @@
 			prefetchw(&bvec->bv_page->flags);
 
 		end_page_writeback(page);
+		page_cache_release(page);
 	} while (bvec >= bio->bi_io_vec);
 	bio_put(bio);
 	if (atomic_dec_and_test(&super->s_pending_writes))