block: add one-hit cache for disk partition lookup

[linux-2.6-omap-h63xx.git] / include / linux / genhd.h

diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 3df7742ce2469e4bdc3673ec904b77e9e4eab6f7..16948eaecae3c3d4969cbbeb23d8106b0aeeb5da 100644 (file)
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -126,6 +126,7 @@ struct blk_scsi_cmd_filter {
 struct disk_part_tbl {
        struct rcu_head rcu_head;
        int len;
+       struct hd_struct *last_lookup;
        struct hd_struct *part[];
 };