(Fwrite_region): Ignore EINVAL error from fsync.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/fileio.c b/src/fileio.c
index b76d243346e..29d12a0b0c3 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -5359,8 +5359,10 @@ This does code conversion according to the value of
      it, and that means the fsync here is not crucial for autosave files.  */
   if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0)
     {
-      /* If fsync fails with EINTR, don't treat that as serious.  */
-      if (errno != EINTR)
+      /* If fsync fails with EINTR, don't treat that as serious.  Also
+         ignore EINVAL which happens when fsync is not supported on this
+         file.  */
+      if (errno != EINTR && errno != EINVAL)
         failure = 1, save_errno = errno;
     }
 #endif