While iterating a list, a particular request may need to be removed for
special handling. Provide an iterator that can safely handle that.
Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx>
---
include/linux/blkdev.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 22746b2d6825..c4597ccdaf26 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1365,6 +1365,10 @@ struct io_comp_batch {
#define rq_list_for_each(listptr, pos) \
for (pos = rq_list_peek((listptr)); pos; pos = rq_list_next(pos))
+#define rq_list_for_each_safe(listptr, pos, nxt) \
+ for (pos = rq_list_peek((listptr)), nxt = rq_list_next(pos); \
+ pos; pos = nxt, nxt = pos ? rq_list_next(pos) : NULL)
+
#define rq_list_next(rq) (rq)->rq_next
#define rq_list_empty(list) ((list) == (struct request *) NULL)
--
2.25.4
