[PATCH] fsync.2: ERRORS: add EIO and ENOSPC

milan.opensource
2020-08-29T07:13:33Z

From: Milan Shah <milan.opensource@gmail.com>

This Fix addresses Bug 194757.
Ref: https://bugzilla.kernel.org/show_bug.cgi?id=194757
---
man2/fsync.2 | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/man2/fsync.2 b/man2/fsync.2
index 96401cd..f38b3e4 100644
--- a/man2/fsync.2
+++ b/man2/fsync.2
@@ -186,6 +186,19 @@ In these cases disk caches need to be disabled using
or
.BR sdparm (8)
to guarantee safe operation.
+
+When
+.BR fsync ()
+or
+.BR fdatasync ()
+returns
+.B EIO
+or
+.B ENOSPC
+any error flags on pages in the file mapping are cleared, so subsequent synchronisation attempts
+will return without error. It is
+.I not
+safe to retry synchronisation and assume that a non-error return means prior writes are now on disk.
.SH SEE ALSO
.BR sync (1),
.BR bdflush (2),
--
2.7.4