[PATCH 08/11] block/reqlist: add reqlist_wait_all()

[Vladimir Sementsov-Ogievskiy]

To be used in the next commit.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 include/block/reqlist.h | 2 ++
 block/reqlist.c         | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/include/block/reqlist.h b/include/block/reqlist.h
index 2de86be300..59d5c24cda 100644
--- a/include/block/reqlist.h
+++ b/include/block/reqlist.h
@@ -39,6 +39,8 @@ BlockReq *reqlist_find_conflict(BlockReqList *reqs, int64_t 
offset,
                                 int64_t bytes);
 bool coroutine_fn reqlist_wait_one(BlockReqList *reqs, int64_t offset,
                                    int64_t bytes, CoMutex *lock);
+void coroutine_fn reqlist_wait_all(BlockReqList *reqs, int64_t offset,
+                                   int64_t bytes, CoMutex *lock);
 void coroutine_fn reqlist_shrink_req(BlockReq *req, int64_t new_bytes);
 void coroutine_fn reqlist_remove_req(BlockReq *req);
 
diff --git a/block/reqlist.c b/block/reqlist.c
index c41415c16a..939437621d 100644
--- a/block/reqlist.c
+++ b/block/reqlist.c
@@ -68,6 +68,12 @@ bool coroutine_fn reqlist_wait_one(BlockReqList *reqs, 
int64_t offset,
     return true;
 }
 
+void coroutine_fn reqlist_wait_all(BlockReqList *reqs, int64_t offset,
+                                   int64_t bytes, CoMutex *lock)
+{
+    while (reqlist_wait_one(reqs, offset, bytes, lock)) { }
+}
+
 /*
  * Shrink request and wake all waiting coroutines (may be some of them are not
  * intersecting with shrunk request).
-- 
2.29.2