From: Yanhu Cao <gmayyyha@gmail.com>
Date: Thu, 14 Jan 2021 14:55:24 +0000 (+0800)
Subject: blk/kernel: fix io_uring got (4) Interrupted system call
X-Git-Tag: v16.2.0~117^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=ddef0048e5b783bfc24a0da57216913bb52d5d34;p=ceph.git

blk/kernel: fix io_uring got (4) Interrupted system call

Fixes: https://tracker.ceph.com/issues/48872
Signed-off-by: Yanhu Cao <gmayyyha@gmail.com>
(cherry picked from commit f4ce8571b43010d95b8f0e23d2701c38ae29a3d1)
---

diff --git a/src/blk/kernel/io_uring.cc b/src/blk/kernel/io_uring.cc
index 3eb7a2d831d7..17bd35bb4c02 100644
--- a/src/blk/kernel/io_uring.cc
+++ b/src/blk/kernel/io_uring.cc
@@ -195,7 +195,7 @@ get_cqe:
 
   if (events == 0) {
     struct epoll_event ev;
-    int ret = epoll_wait(d->epoll_fd, &ev, 1, timeout_ms);
+    int ret = TEMP_FAILURE_RETRY(epoll_wait(d->epoll_fd, &ev, 1, timeout_ms));
     if (ret < 0)
       events = -errno;
     else if (ret > 0)