page_buffers
struct dm_buffer **page_buffers;
"sparse index volume pages", &chapter->page_buffers);
if (chapter->page_buffers == NULL)
if (chapter->page_buffers[i] != NULL)
dm_bufio_release(vdo_forget(chapter->page_buffers[i]));
vdo_free(cache->chapters[i].page_buffers);
chapter->page_buffers,
struct buffer_head *bh = page_buffers(page);
bh = page_buffers(page);