mount.2: EACCES: note some reasons why a filesystem may be read-only

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man2/mount.2 b/man2/mount.2
index 1e46247437e18d7931f122ac57b24294690e984c..4438a2bc6ce696c1a0f105385f15d748df0abd3f 100644 (file)
--- a/man2/mount.2
+++ b/man2/mount.2
@@ -632,6 +632,15 @@ A component of a path was not searchable.
 Mounting a read-only filesystem was attempted without giving the
 .B MS_RDONLY
 flag.
+.IP
+The file system may be read-only for various reasons, including:
+it resides on a read-only optical disk;
+it is resides on a device with a physical switch that has been set to
+mark the device read-only;
+the filesystem implementation was compiled with read-only support;
+or errors were detected when initially mounting the filesystem,
+so that it was marked read-only
+and can't be remounted as read-write (until the errors are fixed).
 .TP
 .B EACCES
 The block device