Merge bk://linuxusb.bkbits.net/gregkh-2.6

into home.osdl.org:/home/torvalds/v2.5/linux

2 files changed, 15 insertions, 1 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index dcd5911223d0..35e0f0004e87 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -82,6 +82,8 @@ struct request_list {
 	wait_queue_head_t wait[2];
 };
 
+#define BLK_MAX_CDB	16
+
 /*
  * try to put the fields that are referenced together in the same cacheline
  */
@@ -147,7 +149,7 @@ struct request {
 	 * when request is used as a packet command carrier
 	 */
 	unsigned int cmd_len;
-	unsigned char cmd[16];
+	unsigned char cmd[BLK_MAX_CDB];
 
 	unsigned int data_len;
 	void *data;
diff --git a/include/linux/list.h b/include/linux/list.h
index b7d383e6a312..0835011b0ffb 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -208,6 +208,18 @@ static inline int list_empty(const struct list_head *head)
 	return head->next == head;
 }
 
+/**
+ * list_empty_careful - tests whether a list is
+ * empty _and_ checks that no other CPU might be
+ * in the process of still modifying either member
+ * @head: the list to test.
+ */
+static inline int list_empty_careful(const struct list_head *head)
+{
+	struct list_head *next = head->next;
+	return (next == head) && (next == head->prev);
+}
+
 static inline void __list_splice(struct list_head *list,
 				 struct list_head *head)
 {