From e543e472c3ed1a02257bf33a434e45dc6ca7cc07 Mon Sep 17 00:00:00 2001
From: Chen Jie <chenj@lemote.com>
Date: Thu, 12 Sep 2013 09:21:41 +0800
Subject: [PATCH] util.c: ignore pollfd.revent for loop_read/loop_write

Let read()/write() report any error/EOF.
---
 src/shared/util.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/shared/util.c b/src/shared/util.c
index eb9b0f7e92..1b35c54c75 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -2193,8 +2193,10 @@ ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll) {
                                         return n > 0 ? n : -errno;
                                 }
 
-                                if (pollfd.revents != POLLIN)
-                                        return n > 0 ? n : -EIO;
+                                /* We knowingly ignore the revents value here,
+                                 * and expect that any error/EOF is reported
+                                 * via read()/write()
+                                 */
 
                                 continue;
                         }
@@ -2241,8 +2243,10 @@ ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll) {
                                         return n > 0 ? n : -errno;
                                 }
 
-                                if (pollfd.revents != POLLOUT)
-                                        return n > 0 ? n : -EIO;
+                                /* We knowingly ignore the revents value here,
+                                 * and expect that any error/EOF is reported
+                                 * via read()/write()
+                                 */
 
                                 continue;
                         }