Re: [PATCH] Syscalls: reboot: Add options to the reboot syscall toremount filesystems ro

[Linus Torvalds]

On Wed, Mar 2, 2011 at 11:31 PM, Ken Sumrall <ksumrall@xxxxxxxxxxx> wrote:
>
> Add 4 new commands to the reboot system call, that do the same thing as the
> RESTART, HALT, POWER_OFF, and RESTART2 commands, but also remount writable
> filesystems as read-only just before doing what the command normally does.

This makes no sense.

If you can change whatever user-land process that does the reboot
system call (and clearly you can, since you're adding new commands and
using those), then why the heck don't you just do the remount-ro from
that same user land?

How many mounted filesystems do you have that it's so hard to keep track of?

                      Linus
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