Followup to: <20000313104008.N19404@morpheus.linuxpower.org>
By author: Jeremy Katz <katzj@linuxpower.org>
In newsgroup: linux.dev.kernel
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> [ Monday, March 13 2000 ] had Petr Vandrovec saying:
>
> > is there any reason why SHM must be mounted on /var/shm? If I have
> > mounted it in /shmfs, it does following (with xawtv):
> [snip strace, etc]
> > When I mounted it in /var/shm, it works. Could not shm code start
> > walking tree in shmfs root instead of in real root on path /var/shm?
> > Have I different SHM namespace if I mount shm in chrooted environment?
> > Unfortunately, I do not have address of author of shm changes, so
> > I'm asking here.
>
> Allow me to quote from Documentation/Changes:
> "To use System V shared memory, you have to mount the shm filesystem
> somewhere and put the mountpoint into /proc/sys/kernel/shmpath.
> Default is /var/shm."
>
> Also, use in chroot'd environments is being worked on -- see Alan's
> latest post on the subject.
>
This is a good question, though. Since the kernel knows where shmfs
is mounted, why not just use that knowledge rather than having to
worry about yet another sysctl?
-hpa
-- <hpa@transmeta.com> at work, <hpa@zytor.com> in private! "Unix gives you enough rope to shoot yourself in the foot."- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
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