bcache: Set ra_pages based on backing device's ra_pages

Signed-off-by: Kent Overstreet <koverstreet@google.com>
git-mirror · Apr 21, 2013 · 4f0fd95 · 4f0fd95
1 parent 2903381
commit 4f0fd95
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
@@ -1067,6 +1067,10 @@ static const char *register_bdev(struct cache_sb *sb, struct page *sb_page,
 
 	set_capacity(g, dc->bdev->bd_part->nr_sects - dc->sb.data_offset);
 
+	g->queue->backing_dev_info.ra_pages =
+		max(g->queue->backing_dev_info.ra_pages,
+		    bdev->bd_queue->backing_dev_info.ra_pages);
+
 	bch_cached_dev_request_init(dc);
 
 	err = "error creating kobject";