Since linux 2.6.30, filesystems are mounted with "relatime" by default. In this discussion, Ingo Molnar says he has added the
CONFIG_DEFAULT_RELATIME kernel option, which:
makes 'norelatime' the default for all mounts without an extra kernel boot option.
I don't really get it, I wonder if that means that without
.config, a kernel will not use relatime as a default mount option?
How can one enable or disable
make menuconfig? (I don't find anything related to relatime.)
And finally, I can't even find
CONFIG_DEFAULT_RELATIME in the kernel sources.
Can someone enlighten me?