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[Qemu-devel] [PATCH] block:avoid deadlock in sheepdog.c
From: |
Dong Xu Wang |
Subject: |
[Qemu-devel] [PATCH] block:avoid deadlock in sheepdog.c |
Date: |
Tue, 22 Nov 2011 10:56:58 +0800 |
From: Dong Xu Wang <address@hidden>
s->lock should be unlocked before leaving add_aio_request.
Signed-off-by: Dong Xu Wang <address@hidden>
---
block/sheepdog.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/block/sheepdog.c b/block/sheepdog.c
index 9f80609..62f1f3a 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -1116,6 +1116,7 @@ static int coroutine_fn add_aio_request(BDRVSheepdogState
*s, AIOReq *aio_req,
/* send a header */
ret = do_write(s->fd, &hdr, sizeof(hdr));
if (ret) {
+ qemu_co_mutex_unlock(&s->lock);
error_report("failed to send a req, %s", strerror(errno));
return -EIO;
}
@@ -1123,6 +1124,7 @@ static int coroutine_fn add_aio_request(BDRVSheepdogState
*s, AIOReq *aio_req,
if (wlen) {
ret = do_writev(s->fd, iov, wlen, aio_req->iov_offset);
if (ret) {
+ qemu_co_mutex_unlock(&s->lock);
error_report("failed to send a data, %s", strerror(errno));
return -EIO;
}
--
1.7.5.4
- [Qemu-devel] [PATCH] block:avoid deadlock in sheepdog.c,
Dong Xu Wang <=