From 495a1a8988e3971499d61e85d46239267e457eca Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Mon, 20 Aug 2018 13:19:02 +0200 Subject: [PATCH] mount.2: srcfix: add FIXME Signed-off-by: Michael Kerrisk --- man2/mount.2 | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/man2/mount.2 b/man2/mount.2 index 089996b0e..a8f104776 100644 --- a/man2/mount.2 +++ b/man2/mount.2 @@ -334,6 +334,15 @@ The following .I mountflags can be changed: .BR MS_LAZYTIME , +.\" FIXME +.\" MS_LAZYTIME seems to be available only on a few filesystems, +.\" and on ext4, it seems (from experiment that this flag +.\" can only be enabled (but not disabled) on a remount. +.\" The following code in ext4_remount() (kernel 4.17) seems to +.\" confirm this: +.\" +.\" if (*flags & SB_LAZYTIME) +.\" sb->s_flags |= SB_LAZYTIME; .BR MS_MANDLOCK , .BR MS_NOATIME , .BR MS_NODEV ,