On 22.12.21 18:40, Vladimir Sementsov-Ogievskiy wrote:
Add function to wait for all intersecting requests.
To be used in the further commit.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
include/block/reqlist.h | 8 ++++++++
block/reqlist.c | 8 ++++++++
2 files changed, 16 insertions(+)
diff --git a/include/block/reqlist.h b/include/block/reqlist.h
index b904d80216..4695623bb3 100644
--- a/include/block/reqlist.h
+++ b/include/block/reqlist.h
@@ -53,6 +53,14 @@ BlockReq *reqlist_find_conflict(BlockReqList *reqs, int64_t
offset,
bool coroutine_fn reqlist_wait_one(BlockReqList *reqs, int64_t offset,
int64_t bytes, CoMutex *lock);
+/*
+ * Wait for all intersecting requests. It just calls reqlist_wait_one() in a
+ * loops, caller is responsible to stop producing new requests in this region
s/loops/loop/
Reviewed-by: Hanna Reitz <hre...@redhat.com>
+ * in parallel, otherwise reqlist_wait_all() may never return.
+ */
+void coroutine_fn reqlist_wait_all(BlockReqList *reqs, int64_t offset,
+ int64_t bytes, CoMutex *lock);
+
/*
* Shrink request and wake all waiting coroutines (may be some of them are not
* intersecting with shrunk request).
