The commit is pushed to "branch-rh7-3.10.0-693.17.1.vz7.45.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-693.17.1.vz7.43.7
------>
commit ad0ba9881818baae707c42471c8a13ce9449fefd
Author: Dmitry Monakhov <dmonak...@openvz.org>
Date: Mon Feb 19 14:06:59 2018 +0300
fuse: fix ->end() vs ->waitq ordering
Currently waiter notified about request completion before ->eio()
which result in race betweel synchronious waiter and ->eio() callback.
Luckily there are no synchronous requests which define such callback.
So this patch should not affect existing callers.
https://jira.sw.ru/browse/PSBM-80680
Signed-off-by: Dmitry Monakhov <dmonak...@openvz.org>
---
fs/fuse/dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 9e77e198de60..a4ea60370586 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -394,9 +394,9 @@ static void request_end(struct fuse_conn *fc, struct
fuse_req *req)
flush_bg_queue(fc, fiq);
spin_unlock(&fc->lock);
}
- wake_up(&req->waitq);
if (req->end)
req->end(fc, req);
+ wake_up(&req->waitq);
fuse_put_request(fc, req);
}
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